Merge pull request #414 from unidoc-build/prep-rc-v3.12.1

Prepare release of UniPDF v3.12.1

common/common.go

@@ -10,93 +10,93 @@
 // terms that can be accessed at https://unidoc.io/eula/
 
 // Package common contains common properties used by the subpackages.
-package common ;import (_f "fmt";_ag "io";_cc "os";_c "path/filepath";_a "runtime";_e "time";);const _fcf =22;
-
-// Warning does nothing for dummy logger.
-func (DummyLogger )Warning (format string ,args ...interface{}){};
-
-// Trace does nothing for dummy logger.
-func (DummyLogger )Trace (format string ,args ...interface{}){};
-
-// Trace logs trace message.
-func (_aea WriterLogger )Trace (format string ,args ...interface{}){if _aea .LogLevel >=LogLevelTrace {_fbg :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_aea .logToWriter (_aea .Output ,_fbg ,format ,args ...);};};const _fce =20;func (_cd ConsoleLogger )output (_fc _ag .Writer ,_gbc string ,_efa string ,_ea ...interface{}){_cb (_fc ,_gbc ,_efa ,_ea ...);};
-
-// SetLogger sets 'logger' to be used by the unidoc unipdf library.
-func SetLogger (logger Logger ){Log =logger };
+package common ;import (_e "fmt";_ec "io";_gb "os";_g "path/filepath";_ab "runtime";_a "time";);
 
 // DummyLogger does nothing.
 type DummyLogger struct{};
 
-// LogLevel is the verbosity level for logging.
-type LogLevel int ;func UtcTimeFormat (t _e .Time )string {return t .Format (_fgc )+"\u0020\u0055\u0054\u0043"};const _fgc ="\u0032\u0020\u004aan\u0075\u0061\u0072\u0079\u0020\u0032\u0030\u0030\u0036\u0020\u0061\u0074\u0020\u0031\u0035\u003a\u0030\u0034";
-
-// Debug logs debug message.
-func (_agd WriterLogger )Debug (format string ,args ...interface{}){if _agd .LogLevel >=LogLevelDebug {_ee :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_agd .logToWriter (_agd .Output ,_ee ,format ,args ...);};};
-
-// Trace logs trace message.
-func (_gf ConsoleLogger )Trace (format string ,args ...interface{}){if _gf .LogLevel >=LogLevelTrace {_agf :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_gf .output (_cc .Stdout ,_agf ,format ,args ...);};};
-
-// Logger is the interface used for logging in the unipdf package.
-type Logger interface{Error (_fa string ,_ed ...interface{});Warning (_ef string ,_g ...interface{});Notice (_cg string ,_bc ...interface{});Info (_ba string ,_be ...interface{});Debug (_gc string ,_gb ...interface{});Trace (_beg string ,_fae ...interface{});IsLogLevel (_d LogLevel )bool ;};
-
 // IsLogLevel returns true if log level is greater or equal than `level`.
 // Can be used to avoid resource intensive calls to loggers.
-func (_fg ConsoleLogger )IsLogLevel (level LogLevel )bool {return _fg .LogLevel >=level };const _cac =2020;
+func (_dg ConsoleLogger )IsLogLevel (level LogLevel )bool {return _dg .LogLevel >=level };func UtcTimeFormat (t _a .Time )string {return t .Format (_ccc )+"\u0020\u0055\u0054\u0043"};const _beg =9;const Version ="\u0033\u002e\u0031\u0032\u002e\u0031";
 
-// NewWriterLogger creates new 'writer' logger.
-func NewWriterLogger (logLevel LogLevel ,writer _ag .Writer )*WriterLogger {_gcc :=WriterLogger {Output :writer ,LogLevel :logLevel };return &_gcc ;};var Log Logger =DummyLogger {};
-
-// Error does nothing for dummy logger.
-func (DummyLogger )Error (format string ,args ...interface{}){};
-
-// IsLogLevel returns true from dummy logger.
-func (DummyLogger )IsLogLevel (level LogLevel )bool {return true };
-
-// Info does nothing for dummy logger.
-func (DummyLogger )Info (format string ,args ...interface{}){};
-
-// WriterLogger is the logger that writes data to the Output writer
-type WriterLogger struct{LogLevel LogLevel ;Output _ag .Writer ;};const (LogLevelTrace LogLevel =5;LogLevelDebug LogLevel =4;LogLevelInfo LogLevel =3;LogLevelNotice LogLevel =2;LogLevelWarning LogLevel =1;LogLevelError LogLevel =0;);
-
-// Info logs info message.
-func (_fbb WriterLogger )Info (format string ,args ...interface{}){if _fbb .LogLevel >=LogLevelInfo {_fade :="\u005bI\u004e\u0046\u004f\u005d\u0020";_fbb .logToWriter (_fbb .Output ,_fade ,format ,args ...);};};
-
-// IsLogLevel returns true if log level is greater or equal than `level`.
-// Can be used to avoid resource intensive calls to loggers.
-func (_ff WriterLogger )IsLogLevel (level LogLevel )bool {return _ff .LogLevel >=level };func _cb (_egf _ag .Writer ,_edd string ,_eee string ,_bag ...interface{}){_ ,_bec ,_gg ,_cbd :=_a .Caller (3);if !_cbd {_bec ="\u003f\u003f\u003f";_gg =0;}else {_bec =_c .Base (_bec );};_ge :=_f .Sprintf ("\u0025s\u0020\u0025\u0073\u003a\u0025\u0064 ",_edd ,_bec ,_gg )+_eee +"\u000a";_f .Fprintf (_egf ,_ge ,_bag ...);};
-
-// Debug does nothing for dummy logger.
-func (DummyLogger )Debug (format string ,args ...interface{}){};
+// Error logs error message.
+func (_fb ConsoleLogger )Error (format string ,args ...interface{}){if _fb .LogLevel >=LogLevelError {_ag :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_fb .output (_gb .Stdout ,_ag ,format ,args ...);};};
 
 // NewConsoleLogger creates new console logger.
-func NewConsoleLogger (logLevel LogLevel )*ConsoleLogger {return &ConsoleLogger {LogLevel :logLevel }};func (_bf WriterLogger )logToWriter (_dd _ag .Writer ,_af string ,_age string ,_agfg ...interface{}){_cb (_dd ,_af ,_age ,_agfg );};const Version ="\u0033\u002e\u0031\u0032\u002e\u0030";const _bac =9;var ReleasedAt =_e .Date (_cac ,_bac ,_fce ,_fcf ,_gde ,0,0,_e .UTC );
+func NewConsoleLogger (logLevel LogLevel )*ConsoleLogger {return &ConsoleLogger {LogLevel :logLevel }};
 
-// Warning logs warning message.
-func (_agb ConsoleLogger )Warning (format string ,args ...interface{}){if _agb .LogLevel >=LogLevelWarning {_bg :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_agb .output (_cc .Stdout ,_bg ,format ,args ...);};};
+// Warning does nothing for dummy logger.
+func (DummyLogger )Warning (format string ,args ...interface{}){};
 
-// Warning logs warning message.
-func (_aa WriterLogger )Warning (format string ,args ...interface{}){if _aa .LogLevel >=LogLevelWarning {_bb :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_aa .logToWriter (_aa .Output ,_bb ,format ,args ...);};};
+// Info logs info message.
+func (_ca ConsoleLogger )Info (format string ,args ...interface{}){if _ca .LogLevel >=LogLevelInfo {_abfg :="\u005bI\u004e\u0046\u004f\u005d\u0020";_ca .output (_gb .Stdout ,_abfg ,format ,args ...);};};var ReleasedAt =_a .Date (_abc ,_beg ,_eeef ,_ce ,_eb ,0,0,_a .UTC );
 
 // ConsoleLogger is a logger that writes logs to the 'os.Stdout'
 type ConsoleLogger struct{LogLevel LogLevel ;};
 
-// Debug logs debug message.
-func (_ca ConsoleLogger )Debug (format string ,args ...interface{}){if _ca .LogLevel >=LogLevelDebug {_de :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_ca .output (_cc .Stdout ,_de ,format ,args ...);};};
+// IsLogLevel returns true if log level is greater or equal than `level`.
+// Can be used to avoid resource intensive calls to loggers.
+func (_bb WriterLogger )IsLogLevel (level LogLevel )bool {return _bb .LogLevel >=level };func (_aa ConsoleLogger )output (_bd _ec .Writer ,_fa string ,_eee string ,_bga ...interface{}){_eed (_bd ,_fa ,_eee ,_bga ...);};
 
-// Notice logs notice message.
-func (_dc ConsoleLogger )Notice (format string ,args ...interface{}){if _dc .LogLevel >=LogLevelNotice {_fb :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_dc .output (_cc .Stdout ,_fb ,format ,args ...);};};
-
-// Error logs error message.
-func (_gd ConsoleLogger )Error (format string ,args ...interface{}){if _gd .LogLevel >=LogLevelError {_ce :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_gd .output (_cc .Stdout ,_ce ,format ,args ...);};};
+// LogLevel is the verbosity level for logging.
+type LogLevel int ;var Log Logger =DummyLogger {};func _eed (_cc _ec .Writer ,_dbg string ,_dcd string ,_dca ...interface{}){_ ,_be ,_bef ,_dce :=_ab .Caller (3);if !_dce {_be ="\u003f\u003f\u003f";_bef =0;}else {_be =_g .Base (_be );};_gdf :=_e .Sprintf ("\u0025s\u0020\u0025\u0073\u003a\u0025\u0064 ",_dbg ,_be ,_bef )+_dcd +"\u000a";_e .Fprintf (_cc ,_gdf ,_dca ...);};
 
 // Notice does nothing for dummy logger.
-func (DummyLogger )Notice (format string ,args ...interface{}){};const _gde =10;
-
-// Info logs info message.
-func (_fad ConsoleLogger )Info (format string ,args ...interface{}){if _fad .LogLevel >=LogLevelInfo {_bcc :="\u005bI\u004e\u0046\u004f\u005d\u0020";_fad .output (_cc .Stdout ,_bcc ,format ,args ...);};};
-
-// Notice logs notice message.
-func (_cf WriterLogger )Notice (format string ,args ...interface{}){if _cf .LogLevel >=LogLevelNotice {_eg :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_cf .logToWriter (_cf .Output ,_eg ,format ,args ...);};};
+func (DummyLogger )Notice (format string ,args ...interface{}){};
 
 // Error logs error message.
-func (_cee WriterLogger )Error (format string ,args ...interface{}){if _cee .LogLevel >=LogLevelError {_ae :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_cee .logToWriter (_cee .Output ,_ae ,format ,args ...);};};
+func (_bcg WriterLogger )Error (format string ,args ...interface{}){if _bcg .LogLevel >=LogLevelError {_fce :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_bcg .logToWriter (_bcg .Output ,_fce ,format ,args ...);};};
+
+// Warning logs warning message.
+func (_ac ConsoleLogger )Warning (format string ,args ...interface{}){if _ac .LogLevel >=LogLevelWarning {_ba :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_ac .output (_gb .Stdout ,_ba ,format ,args ...);};};
+
+// Notice logs notice message.
+func (_bab WriterLogger )Notice (format string ,args ...interface{}){if _bab .LogLevel >=LogLevelNotice {_eca :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_bab .logToWriter (_bab .Output ,_eca ,format ,args ...);};};
+
+// Warning logs warning message.
+func (_ecg WriterLogger )Warning (format string ,args ...interface{}){if _ecg .LogLevel >=LogLevelWarning {_caa :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_ecg .logToWriter (_ecg .Output ,_caa ,format ,args ...);};};const _eeef =28;
+
+// Logger is the interface used for logging in the unipdf package.
+type Logger interface{Error (_ed string ,_ad ...interface{});Warning (_ee string ,_ef ...interface{});Notice (_gg string ,_c ...interface{});Info (_abf string ,_b ...interface{});Debug (_cd string ,_d ...interface{});Trace (_bc string ,_fc ...interface{});IsLogLevel (_edf LogLevel )bool ;};
+
+// Trace logs trace message.
+func (_geg WriterLogger )Trace (format string ,args ...interface{}){if _geg .LogLevel >=LogLevelTrace {_gf :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_geg .logToWriter (_geg .Output ,_gf ,format ,args ...);};};
+
+// IsLogLevel returns true from dummy logger.
+func (DummyLogger )IsLogLevel (level LogLevel )bool {return true };
+
+// Notice logs notice message.
+func (_da ConsoleLogger )Notice (format string ,args ...interface{}){if _da .LogLevel >=LogLevelNotice {_gc :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_da .output (_gb .Stdout ,_gc ,format ,args ...);};};const _abc =2020;
+
+// Info logs info message.
+func (_dc WriterLogger )Info (format string ,args ...interface{}){if _dc .LogLevel >=LogLevelInfo {_bdc :="\u005bI\u004e\u0046\u004f\u005d\u0020";_dc .logToWriter (_dc .Output ,_bdc ,format ,args ...);};};const _ccc ="\u0032\u0020\u004aan\u0075\u0061\u0072\u0079\u0020\u0032\u0030\u0030\u0036\u0020\u0061\u0074\u0020\u0031\u0035\u003a\u0030\u0034";
+
+// Debug logs debug message.
+func (_fe ConsoleLogger )Debug (format string ,args ...interface{}){if _fe .LogLevel >=LogLevelDebug {_bg :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_fe .output (_gb .Stdout ,_bg ,format ,args ...);};};
+
+// Debug does nothing for dummy logger.
+func (DummyLogger )Debug (format string ,args ...interface{}){};const _ce =21;
+
+// Debug logs debug message.
+func (_ge WriterLogger )Debug (format string ,args ...interface{}){if _ge .LogLevel >=LogLevelDebug {_dgg :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_ge .logToWriter (_ge .Output ,_dgg ,format ,args ...);};};
+
+// Trace logs trace message.
+func (_gd ConsoleLogger )Trace (format string ,args ...interface{}){if _gd .LogLevel >=LogLevelTrace {_af :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_gd .output (_gb .Stdout ,_af ,format ,args ...);};};func (_gdb WriterLogger )logToWriter (_fg _ec .Writer ,_dcf string ,_db string ,_cae ...interface{}){_eed (_fg ,_dcf ,_db ,_cae );};
+
+// Trace does nothing for dummy logger.
+func (DummyLogger )Trace (format string ,args ...interface{}){};
+
+// Info does nothing for dummy logger.
+func (DummyLogger )Info (format string ,args ...interface{}){};
+
+// NewWriterLogger creates new 'writer' logger.
+func NewWriterLogger (logLevel LogLevel ,writer _ec .Writer )*WriterLogger {_aba :=WriterLogger {Output :writer ,LogLevel :logLevel };return &_aba ;};
+
+// SetLogger sets 'logger' to be used by the unidoc unipdf library.
+func SetLogger (logger Logger ){Log =logger };const _eb =50;
+
+// WriterLogger is the logger that writes data to the Output writer
+type WriterLogger struct{LogLevel LogLevel ;Output _ec .Writer ;};
+
+// Error does nothing for dummy logger.
+func (DummyLogger )Error (format string ,args ...interface{}){};const (LogLevelTrace LogLevel =5;LogLevelDebug LogLevel =4;LogLevelInfo LogLevel =3;LogLevelNotice LogLevel =2;LogLevelWarning LogLevel =1;LogLevelError LogLevel =0;);

contentstream/draw/draw.go

@@ -14,204 +14,204 @@
 // page content streams and XObject forms and thus also in annotation appearance streams.
 //
 // Also defines utility functions for drawing common shapes such as rectangles, lines and circles (ovals).
-package draw ;import (_e "fmt";_gg "github.com/unidoc/unipdf/v3/contentstream";_cb "github.com/unidoc/unipdf/v3/core";_gd "github.com/unidoc/unipdf/v3/internal/transform";_c "github.com/unidoc/unipdf/v3/model";_a "math";);
+package draw ;import (_g "fmt";_c "github.com/unidoc/unipdf/v3/contentstream";_f "github.com/unidoc/unipdf/v3/core";_e "github.com/unidoc/unipdf/v3/internal/transform";_bg "github.com/unidoc/unipdf/v3/model";_b "math";);
 
-// Line defines a line shape between point 1 (X1,Y1) and point 2 (X2,Y2).  The line ending styles can be none (regular line),
-// or arrows at either end.  The line also has a specified width, color and opacity.
-type Line struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_c .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineEndingStyle1 LineEndingStyle ;LineEndingStyle2 LineEndingStyle ;LineStyle LineStyle ;};
+// ToPdfRectangle returns the bounding box as a PDF rectangle.
+func (_ggd BoundingBox )ToPdfRectangle ()*_bg .PdfRectangle {return &_bg .PdfRectangle {Llx :_ggd .X ,Lly :_ggd .Y ,Urx :_ggd .X +_ggd .Width ,Ury :_ggd .Y +_ggd .Height };};
 
-// Draw draws the circle. Can specify a graphics state (gsName) for setting opacity etc.  Otherwise leave empty ("").
-// Returns the content stream as a byte array, the bounding box and an error on failure.
-func (_eb Circle )Draw (gsName string )([]byte ,*_c .PdfRectangle ,error ){_gcd :=_eb .Width /2;_ge :=_eb .Height /2;if _eb .BorderEnabled {_gcd -=_eb .BorderWidth /2;_ge -=_eb .BorderWidth /2;};_cg :=0.551784;_caf :=_gcd *_cg ;_gff :=_ge *_cg ;_ceb :=NewCubicBezierPath ();_ceb =_ceb .AppendCurve (NewCubicBezierCurve (-_gcd ,0,-_gcd ,_gff ,-_caf ,_ge ,0,_ge ));_ceb =_ceb .AppendCurve (NewCubicBezierCurve (0,_ge ,_caf ,_ge ,_gcd ,_gff ,_gcd ,0));_ceb =_ceb .AppendCurve (NewCubicBezierCurve (_gcd ,0,_gcd ,-_gff ,_caf ,-_ge ,0,-_ge ));_ceb =_ceb .AppendCurve (NewCubicBezierCurve (0,-_ge ,-_caf ,-_ge ,-_gcd ,-_gff ,-_gcd ,0));_ceb =_ceb .Offset (_gcd ,_ge );if _eb .BorderEnabled {_ceb =_ceb .Offset (_eb .BorderWidth /2,_eb .BorderWidth /2);};if _eb .X !=0||_eb .Y !=0{_ceb =_ceb .Offset (_eb .X ,_eb .Y );};_gaf :=_gg .NewContentCreator ();_gaf .Add_q ();if _eb .FillEnabled {_gaf .Add_rg (_eb .FillColor .R (),_eb .FillColor .G (),_eb .FillColor .B ());};if _eb .BorderEnabled {_gaf .Add_RG (_eb .BorderColor .R (),_eb .BorderColor .G (),_eb .BorderColor .B ());_gaf .Add_w (_eb .BorderWidth );};if len (gsName )> 1{_gaf .Add_gs (_cb .PdfObjectName (gsName ));};DrawBezierPathWithCreator (_ceb ,_gaf );_gaf .Add_h ();if _eb .FillEnabled &&_eb .BorderEnabled {_gaf .Add_B ();}else if _eb .FillEnabled {_gaf .Add_f ();}else if _eb .BorderEnabled {_gaf .Add_S ();};_gaf .Add_Q ();_gdg :=_ceb .GetBoundingBox ();if _eb .BorderEnabled {_gdg .Height +=_eb .BorderWidth ;_gdg .Width +=_eb .BorderWidth ;_gdg .X -=_eb .BorderWidth /2;_gdg .Y -=_eb .BorderWidth /2;};return _gaf .Bytes (),_gdg .ToPdfRectangle (),nil ;};
-
-// Copy returns a clone of the Bezier path.
-func (_cac CubicBezierPath )Copy ()CubicBezierPath {_b :=CubicBezierPath {};_b .Curves =[]CubicBezierCurve {};for _ ,_bf :=range _cac .Curves {_b .Curves =append (_b .Curves ,_bf );};return _b ;};
-
-// Vector represents a two-dimensional vector.
-type Vector struct{Dx float64 ;Dy float64 ;};
-
-// Scale scales the vector by the specified factor.
-func (_cbd Vector )Scale (factor float64 )Vector {_efd :=_cbd .Magnitude ();_bfbd :=_cbd .GetPolarAngle ();_cbd .Dx =factor *_efd *_a .Cos (_bfbd );_cbd .Dy =factor *_efd *_a .Sin (_bfbd );return _cbd ;};
-
-// AppendCurve appends the specified Bezier curve to the path.
-func (_ca CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_ca .Curves =append (_ca .Curves ,curve );return _ca ;};
-
-// Rotate rotates the vector by the specified angle.
-func (_bfd Vector )Rotate (phi float64 )Vector {_ecc :=_bfd .Magnitude ();_aea :=_bfd .GetPolarAngle ();return NewVectorPolar (_ecc ,_aea +phi );};
-
-// Point represents a two-dimensional point.
-type Point struct{X float64 ;Y float64 ;};
-
-// Magnitude returns the magnitude of the vector.
-func (_bgd Vector )Magnitude ()float64 {return _a .Sqrt (_a .Pow (_bgd .Dx ,2.0)+_a .Pow (_bgd .Dy ,2.0))};
+// RemovePoint removes the point at the index specified by number from the
+// path. The index is 1-based.
+func (_gd Path )RemovePoint (number int )Path {if number < 1||number > len (_gd .Points ){return _gd ;};_cbe :=number -1;_gd .Points =append (_gd .Points [:_cbe ],_gd .Points [_cbe +1:]...);return _gd ;};
 
 // Draw draws the basic line to PDF. Generates the content stream which can be used in page contents or appearance
 // stream of annotation. Returns the stream content, XForm bounding box (local), bounding box and an error if
 // one occurred.
-func (_gfd BasicLine )Draw (gsName string )([]byte ,*_c .PdfRectangle ,error ){_dbc :=_gfd .LineWidth ;_bb :=NewPath ();_bb =_bb .AppendPoint (NewPoint (_gfd .X1 ,_gfd .Y1 ));_bb =_bb .AppendPoint (NewPoint (_gfd .X2 ,_gfd .Y2 ));_accc :=_gg .NewContentCreator ();_aad :=_bb .GetBoundingBox ();DrawPathWithCreator (_bb ,_accc );if _gfd .LineStyle ==LineStyleDashed {_accc .Add_d ([]int64 {1,1},0);};_accc .Add_RG (_gfd .LineColor .R (),_gfd .LineColor .G (),_gfd .LineColor .B ()).Add_w (_dbc ).Add_S ().Add_Q ();return _accc .Bytes (),_aad .ToPdfRectangle (),nil ;};
+func (_aef BasicLine )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_cfbe :=_aef .LineWidth ;_abbg :=NewPath ();_abbg =_abbg .AppendPoint (NewPoint (_aef .X1 ,_aef .Y1 ));_abbg =_abbg .AppendPoint (NewPoint (_aef .X2 ,_aef .Y2 ));_acd :=_c .NewContentCreator ();_dcg :=_abbg .GetBoundingBox ();DrawPathWithCreator (_abbg ,_acd );if _aef .LineStyle ==LineStyleDashed {_acd .Add_d ([]int64 {1,1},0);};_acd .Add_RG (_aef .LineColor .R (),_aef .LineColor .G (),_aef .LineColor .B ()).Add_w (_cfbe ).Add_S ().Add_Q ();return _acd .Bytes (),_dcg .ToPdfRectangle (),nil ;};
 
-// GetPolarAngle returns the angle the magnitude of the vector forms with the
-// positive X-axis going counterclockwise.
-func (_egf Vector )GetPolarAngle ()float64 {return _a .Atan2 (_egf .Dy ,_egf .Dx )};
+// Path consists of straight line connections between each point defined in an array of points.
+type Path struct{Points []Point ;};
+
+// NewPoint returns a new point with the coordinates x, y.
+func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};
+
+// ToPdfRectangle returns the rectangle as a PDF rectangle.
+func (_cda Rectangle )ToPdfRectangle ()*_bg .PdfRectangle {return &_bg .PdfRectangle {Llx :_cda .X ,Lly :_cda .Y ,Urx :_cda .X +_cda .Width ,Ury :_cda .Y +_cda .Height };};const (LineStyleSolid LineStyle =0;LineStyleDashed LineStyle =1;);
 
 // CubicBezierCurve is defined by:
 // R(t) = P0*(1-t)^3 + P1*3*t*(1-t)^2 + P2*3*t^2*(1-t) + P3*t^3
 // where P0 is the current point, P1, P2 control points and P3 the final point.
 type CubicBezierCurve struct{P0 Point ;P1 Point ;P2 Point ;P3 Point ;};
 
-// GetBoundingBox returns the bounding box of the Bezier path.
-func (_ag CubicBezierPath )GetBoundingBox ()Rectangle {_ec :=Rectangle {};_af :=0.0;_ggb :=0.0;_ecb :=0.0;_ce :=0.0;for _fb ,_da :=range _ag .Curves {_gaa :=_da .GetBounds ();if _fb ==0{_af =_gaa .Llx ;_ggb =_gaa .Urx ;_ecb =_gaa .Lly ;_ce =_gaa .Ury ;continue ;};if _gaa .Llx < _af {_af =_gaa .Llx ;};if _gaa .Urx > _ggb {_ggb =_gaa .Urx ;};if _gaa .Lly < _ecb {_ecb =_gaa .Lly ;};if _gaa .Ury > _ce {_ce =_gaa .Ury ;};};_ec .X =_af ;_ec .Y =_ecb ;_ec .Width =_ggb -_af ;_ec .Height =_ce -_ecb ;return _ec ;};
-
-// NewPath returns a new empty path.
-func NewPath ()Path {return Path {}};
-
-// Draw draws the polygon. A graphics state name can be specified for
-// setting the polygon properties (e.g. setting the opacity). Otherwise leave
-// empty (""). Returns the content stream as a byte array and the polygon
-// bounding box.
-func (_bae Polygon )Draw (gsName string )([]byte ,*_c .PdfRectangle ,error ){_cff :=_gg .NewContentCreator ();_cff .Add_q ();_bae .FillEnabled =_bae .FillEnabled &&_bae .FillColor !=nil ;if _bae .FillEnabled {_cff .Add_rg (_bae .FillColor .R (),_bae .FillColor .G (),_bae .FillColor .B ());};_bae .BorderEnabled =_bae .BorderEnabled &&_bae .BorderColor !=nil ;if _bae .BorderEnabled {_cff .Add_RG (_bae .BorderColor .R (),_bae .BorderColor .G (),_bae .BorderColor .B ());_cff .Add_w (_bae .BorderWidth );};if len (gsName )> 1{_cff .Add_gs (_cb .PdfObjectName (gsName ));};_fcf :=NewPath ();for _ ,_cgg :=range _bae .Points {for _bab ,_dd :=range _cgg {_fcf =_fcf .AppendPoint (_dd );if _bab ==0{_cff .Add_m (_dd .X ,_dd .Y );}else {_cff .Add_l (_dd .X ,_dd .Y );};};_cff .Add_h ();};if _bae .FillEnabled &&_bae .BorderEnabled {_cff .Add_B ();}else if _bae .FillEnabled {_cff .Add_f ();}else if _bae .BorderEnabled {_cff .Add_S ();};_cff .Add_Q ();return _cff .Bytes (),_fcf .GetBoundingBox ().ToPdfRectangle (),nil ;};
-
-// BasicLine defines a line between point 1 (X1,Y1) and point 2 (X2,Y2). The line has a specified width, color and opacity.
-type BasicLine struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_c .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineStyle LineStyle ;};
-
-// Draw draws the rectangle. Can specify a graphics state (gsName) for setting opacity etc.
-// Otherwise leave empty (""). Returns the content stream as a byte array, bounding box and an error on failure.
-func (_ccb Rectangle )Draw (gsName string )([]byte ,*_c .PdfRectangle ,error ){_ee :=NewPath ();_ee =_ee .AppendPoint (NewPoint (0,0));_ee =_ee .AppendPoint (NewPoint (0,_ccb .Height ));_ee =_ee .AppendPoint (NewPoint (_ccb .Width ,_ccb .Height ));_ee =_ee .AppendPoint (NewPoint (_ccb .Width ,0));_ee =_ee .AppendPoint (NewPoint (0,0));if _ccb .X !=0||_ccb .Y !=0{_ee =_ee .Offset (_ccb .X ,_ccb .Y );};_dca :=_gg .NewContentCreator ();_dca .Add_q ();if _ccb .FillEnabled {_dca .Add_rg (_ccb .FillColor .R (),_ccb .FillColor .G (),_ccb .FillColor .B ());};if _ccb .BorderEnabled {_dca .Add_RG (_ccb .BorderColor .R (),_ccb .BorderColor .G (),_ccb .BorderColor .B ());_dca .Add_w (_ccb .BorderWidth );};if len (gsName )> 1{_dca .Add_gs (_cb .PdfObjectName (gsName ));};DrawPathWithCreator (_ee ,_dca );_dca .Add_h ();if _ccb .FillEnabled &&_ccb .BorderEnabled {_dca .Add_B ();}else if _ccb .FillEnabled {_dca .Add_f ();}else if _ccb .BorderEnabled {_dca .Add_S ();};_dca .Add_Q ();return _dca .Bytes (),_ee .GetBoundingBox ().ToPdfRectangle (),nil ;};
-
-// GetPointNumber returns the path point at the index specified by number.
-// The index is 1-based.
-func (_bc Path )GetPointNumber (number int )Point {if number < 1||number > len (_bc .Points ){return Point {};};return _bc .Points [number -1];};
-
-// Polygon is a multi-point shape that can be drawn to a PDF content stream.
-type Polygon struct{Points [][]Point ;FillEnabled bool ;FillColor *_c .PdfColorDeviceRGB ;BorderEnabled bool ;BorderColor *_c .PdfColorDeviceRGB ;BorderWidth float64 ;};
-
-// NewVectorPolar returns a new vector calculated from the specified
-// magnitude and angle.
-func NewVectorPolar (length float64 ,theta float64 )Vector {_fcbe :=Vector {};_fcbe .Dx =length *_a .Cos (theta );_fcbe .Dy =length *_a .Sin (theta );return _fcbe ;};
-
-// NewPoint returns a new point with the coordinates x, y.
-func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};
-
-// Rotate returns a new Point at `p` rotated by `theta` degrees.
-func (_eae Point )Rotate (theta float64 )Point {_ecg :=_gd .NewPoint (_eae .X ,_eae .Y ).Rotate (theta );return NewPoint (_ecg .X ,_ecg .Y );};
-
-// ToPdfRectangle returns the rectangle as a PDF rectangle.
-func (_ccfa Rectangle )ToPdfRectangle ()*_c .PdfRectangle {return &_c .PdfRectangle {Llx :_ccfa .X ,Lly :_ccfa .Y ,Urx :_ccfa .X +_ccfa .Width ,Ury :_ccfa .Y +_ccfa .Height };};
-
-// DrawBezierPathWithCreator makes the bezier path with the content creator.
-// Adds the PDF commands to draw the path to the creator instance.
-func DrawBezierPathWithCreator (bpath CubicBezierPath ,creator *_gg .ContentCreator ){for _cffg ,_ece :=range bpath .Curves {if _cffg ==0{creator .Add_m (_ece .P0 .X ,_ece .P0 .Y );};creator .Add_c (_ece .P1 .X ,_ece .P1 .Y ,_ece .P2 .X ,_ece .P2 .Y ,_ece .P3 .X ,_ece .P3 .Y );};};
-
-// CubicBezierPath represents a collection of cubic Bezier curves.
-type CubicBezierPath struct{Curves []CubicBezierCurve ;};
-
-// GetBounds returns the bounding box of the Bezier curve.
-func (_dcg CubicBezierCurve )GetBounds ()_c .PdfRectangle {_ad :=_dcg .P0 .X ;_aa :=_dcg .P0 .X ;_f :=_dcg .P0 .Y ;_fa :=_dcg .P0 .Y ;for _ga :=0.0;_ga <=1.0;_ga +=0.001{Rx :=_dcg .P0 .X *_a .Pow (1-_ga ,3)+_dcg .P1 .X *3*_ga *_a .Pow (1-_ga ,2)+_dcg .P2 .X *3*_a .Pow (_ga ,2)*(1-_ga )+_dcg .P3 .X *_a .Pow (_ga ,3);Ry :=_dcg .P0 .Y *_a .Pow (1-_ga ,3)+_dcg .P1 .Y *3*_ga *_a .Pow (1-_ga ,2)+_dcg .P2 .Y *3*_a .Pow (_ga ,2)*(1-_ga )+_dcg .P3 .Y *_a .Pow (_ga ,3);if Rx < _ad {_ad =Rx ;};if Rx > _aa {_aa =Rx ;};if Ry < _f {_f =Ry ;};if Ry > _fa {_fa =Ry ;};};_gdd :=_c .PdfRectangle {};_gdd .Llx =_ad ;_gdd .Lly =_f ;_gdd .Urx =_aa ;_gdd .Ury =_fa ;return _gdd ;};
-
-// Circle represents a circle shape with fill and border properties that can be drawn to a PDF content stream.
-type Circle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_c .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_c .PdfColorDeviceRGB ;Opacity float64 ;};
-
-// Flip changes the sign of the vector: -vector.
-func (_bbc Vector )Flip ()Vector {_gddf :=_bbc .Magnitude ();_ecge :=_bbc .GetPolarAngle ();_bbc .Dx =_gddf *_a .Cos (_ecge +_a .Pi );_bbc .Dy =_gddf *_a .Sin (_ecge +_a .Pi );return _bbc ;};
-
-// Polyline defines a slice of points that are connected as straight lines.
-type Polyline struct{Points []Point ;LineColor *_c .PdfColorDeviceRGB ;LineWidth float64 ;};
-
-// Add adds the specified vector to the current one and returns the result.
-func (_dcc Vector )Add (other Vector )Vector {_dcc .Dx +=other .Dx ;_dcc .Dy +=other .Dy ;return _dcc };
-
-// GetBoundingBox returns the bounding box of the path.
-func (_dfb Path )GetBoundingBox ()BoundingBox {_gc :=BoundingBox {};_aee :=0.0;_cf :=0.0;_cad :=0.0;_afg :=0.0;for _bd ,_ba :=range _dfb .Points {if _bd ==0{_aee =_ba .X ;_cf =_ba .X ;_cad =_ba .Y ;_afg =_ba .Y ;continue ;};if _ba .X < _aee {_aee =_ba .X ;};if _ba .X > _cf {_cf =_ba .X ;};if _ba .Y < _cad {_cad =_ba .Y ;};if _ba .Y > _afg {_afg =_ba .Y ;};};_gc .X =_aee ;_gc .Y =_cad ;_gc .Width =_cf -_aee ;_gc .Height =_afg -_cad ;return _gc ;};
-
-// DrawPathWithCreator makes the path with the content creator.
-// Adds the PDF commands to draw the path to the creator instance.
-func DrawPathWithCreator (path Path ,creator *_gg .ContentCreator ){for _ffa ,_de :=range path .Points {if _ffa ==0{creator .Add_m (_de .X ,_de .Y );}else {creator .Add_l (_de .X ,_de .Y );};};};
-
-// PolyBezierCurve represents a composite curve that is the result of
-// joining multiple cubic Bezier curves.
-type PolyBezierCurve struct{Curves []CubicBezierCurve ;BorderWidth float64 ;BorderColor *_c .PdfColorDeviceRGB ;FillEnabled bool ;FillColor *_c .PdfColorDeviceRGB ;};
-
-// RemovePoint removes the point at the index specified by number from the
-// path. The index is 1-based.
-func (_ggbb Path )RemovePoint (number int )Path {if number < 1||number > len (_ggbb .Points ){return _ggbb ;};_ac :=number -1;_ggbb .Points =append (_ggbb .Points [:_ac ],_ggbb .Points [_ac +1:]...);return _ggbb ;};
-
-// ToPdfRectangle returns the bounding box as a PDF rectangle.
-func (_fad BoundingBox )ToPdfRectangle ()*_c .PdfRectangle {return &_c .PdfRectangle {Llx :_fad .X ,Lly :_fad .Y ,Urx :_fad .X +_fad .Width ,Ury :_fad .Y +_fad .Height };};
-
-// Path consists of straight line connections between each point defined in an array of points.
-type Path struct{Points []Point ;};const (LineEndingStyleNone LineEndingStyle =0;LineEndingStyleArrow LineEndingStyle =1;LineEndingStyleButt LineEndingStyle =2;);
-
-// Length returns the number of points in the path.
-func (_cec Path )Length ()int {return len (_cec .Points )};
-
-// FlipX flips the sign of the Dx component of the vector.
-func (_acg Vector )FlipX ()Vector {_acg .Dx =-_acg .Dx ;return _acg };
-
-// LineStyle refers to how the line will be created.
-type LineStyle int ;
-
-// Draw draws the line to PDF contentstream. Generates the content stream which can be used in page contents or
-// appearance stream of annotation. Returns the stream content, XForm bounding box (local), bounding box and an error
-// if one occurred.
-func (_gde Line )Draw (gsName string )([]byte ,*_c .PdfRectangle ,error ){_aaf ,_fcb :=_gde .X1 ,_gde .X2 ;_adgg ,_acca :=_gde .Y1 ,_gde .Y2 ;_cba :=_acca -_adgg ;_ef :=_fcb -_aaf ;_dab :=_a .Atan2 (_cba ,_ef );L :=_a .Sqrt (_a .Pow (_ef ,2.0)+_a .Pow (_cba ,2.0));_efe :=_gde .LineWidth ;_ccbg :=_a .Pi ;_fdd :=1.0;if _ef < 0{_fdd *=-1.0;};if _cba < 0{_fdd *=-1.0;};VsX :=_fdd *(-_efe /2*_a .Cos (_dab +_ccbg /2));VsY :=_fdd *(-_efe /2*_a .Sin (_dab +_ccbg /2)+_efe *_a .Sin (_dab +_ccbg /2));V1X :=VsX +_efe /2*_a .Cos (_dab +_ccbg /2);V1Y :=VsY +_efe /2*_a .Sin (_dab +_ccbg /2);V2X :=VsX +_efe /2*_a .Cos (_dab +_ccbg /2)+L *_a .Cos (_dab );V2Y :=VsY +_efe /2*_a .Sin (_dab +_ccbg /2)+L *_a .Sin (_dab );V3X :=VsX +_efe /2*_a .Cos (_dab +_ccbg /2)+L *_a .Cos (_dab )+_efe *_a .Cos (_dab -_ccbg /2);V3Y :=VsY +_efe /2*_a .Sin (_dab +_ccbg /2)+L *_a .Sin (_dab )+_efe *_a .Sin (_dab -_ccbg /2);V4X :=VsX +_efe /2*_a .Cos (_dab -_ccbg /2);V4Y :=VsY +_efe /2*_a .Sin (_dab -_ccbg /2);_dda :=NewPath ();_dda =_dda .AppendPoint (NewPoint (V1X ,V1Y ));_dda =_dda .AppendPoint (NewPoint (V2X ,V2Y ));_dda =_dda .AppendPoint (NewPoint (V3X ,V3Y ));_dda =_dda .AppendPoint (NewPoint (V4X ,V4Y ));_ddf :=_gde .LineEndingStyle1 ;_aeg :=_gde .LineEndingStyle2 ;_cadc :=3*_efe ;_bcg :=3*_efe ;_badf :=(_bcg -_efe )/2;if _aeg ==LineEndingStyleArrow {_adf :=_dda .GetPointNumber (2);_bfe :=NewVectorPolar (_cadc ,_dab +_ccbg );_eag :=_adf .AddVector (_bfe );_cga :=NewVectorPolar (_bcg /2,_dab +_ccbg /2);_ccc :=NewVectorPolar (_cadc ,_dab );_fbc :=NewVectorPolar (_badf ,_dab +_ccbg /2);_bac :=_eag .AddVector (_fbc );_cgf :=_ccc .Add (_cga .Flip ());_eaa :=_bac .AddVector (_cgf );_cbe :=_cga .Scale (2).Flip ().Add (_cgf .Flip ());_fe :=_eaa .AddVector (_cbe );_gcdb :=_eag .AddVector (NewVectorPolar (_efe ,_dab -_ccbg /2));_aeb :=NewPath ();_aeb =_aeb .AppendPoint (_dda .GetPointNumber (1));_aeb =_aeb .AppendPoint (_eag );_aeb =_aeb .AppendPoint (_bac );_aeb =_aeb .AppendPoint (_eaa );_aeb =_aeb .AppendPoint (_fe );_aeb =_aeb .AppendPoint (_gcdb );_aeb =_aeb .AppendPoint (_dda .GetPointNumber (4));_dda =_aeb ;};if _ddf ==LineEndingStyleArrow {_gafe :=_dda .GetPointNumber (1);_cfg :=_dda .GetPointNumber (_dda .Length ());_bea :=NewVectorPolar (_efe /2,_dab +_ccbg +_ccbg /2);_bg :=_gafe .AddVector (_bea );_dad :=NewVectorPolar (_cadc ,_dab ).Add (NewVectorPolar (_bcg /2,_dab +_ccbg /2));_aeed :=_bg .AddVector (_dad );_add :=NewVectorPolar (_badf ,_dab -_ccbg /2);_fgd :=_aeed .AddVector (_add );_efc :=NewVectorPolar (_cadc ,_dab );_adfb :=_cfg .AddVector (_efc );_bfb :=NewVectorPolar (_badf ,_dab +_ccbg +_ccbg /2);_bce :=_adfb .AddVector (_bfb );_baed :=_bg ;_gda :=NewPath ();_gda =_gda .AppendPoint (_bg );_gda =_gda .AppendPoint (_aeed );_gda =_gda .AppendPoint (_fgd );for _ ,_baedg :=range _dda .Points [1:len (_dda .Points )-1]{_gda =_gda .AppendPoint (_baedg );};_gda =_gda .AppendPoint (_adfb );_gda =_gda .AppendPoint (_bce );_gda =_gda .AppendPoint (_baed );_dda =_gda ;};_faa :=_gg .NewContentCreator ();_faa .Add_q ().Add_rg (_gde .LineColor .R (),_gde .LineColor .G (),_gde .LineColor .B ());if len (gsName )> 1{_faa .Add_gs (_cb .PdfObjectName (gsName ));};_dda =_dda .Offset (_gde .X1 ,_gde .Y1 );_bed :=_dda .GetBoundingBox ();DrawPathWithCreator (_dda ,_faa );if _gde .LineStyle ==LineStyleDashed {_faa .Add_d ([]int64 {1,1},0).Add_S ().Add_f ().Add_Q ();}else {_faa .Add_f ().Add_Q ();};return _faa .Bytes (),_bed .ToPdfRectangle (),nil ;};
-
-// BoundingBox represents the smallest rectangular area that encapsulates an object.
-type BoundingBox struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;};
+// Add shifts the coordinates of the point with dx, dy and returns the result.
+func (_gda Point )Add (dx ,dy float64 )Point {_gda .X +=dx ;_gda .Y +=dy ;return _gda };
 
 // Draw draws the composite Bezier curve. A graphics state name can be
 // specified for setting the curve properties (e.g. setting the opacity).
 // Otherwise leave empty (""). Returns the content stream as a byte array and
 // the curve bounding box.
-func (_ab PolyBezierCurve )Draw (gsName string )([]byte ,*_c .PdfRectangle ,error ){if _ab .BorderColor ==nil {_ab .BorderColor =_c .NewPdfColorDeviceRGB (0,0,0);};_bad :=NewCubicBezierPath ();for _ ,_eg :=range _ab .Curves {_bad =_bad .AppendCurve (_eg );};_ccf :=_gg .NewContentCreator ();_ccf .Add_q ();_ab .FillEnabled =_ab .FillEnabled &&_ab .FillColor !=nil ;if _ab .FillEnabled {_ccf .Add_rg (_ab .FillColor .R (),_ab .FillColor .G (),_ab .FillColor .B ());};_ccf .Add_RG (_ab .BorderColor .R (),_ab .BorderColor .G (),_ab .BorderColor .B ());_ccf .Add_w (_ab .BorderWidth );if len (gsName )> 1{_ccf .Add_gs (_cb .PdfObjectName (gsName ));};for _ ,_be :=range _bad .Curves {_ccf .Add_m (_be .P0 .X ,_be .P0 .Y );_ccf .Add_c (_be .P1 .X ,_be .P1 .Y ,_be .P2 .X ,_be .P2 .Y ,_be .P3 .X ,_be .P3 .Y );};if _ab .FillEnabled {_ccf .Add_h ();_ccf .Add_B ();}else {_ccf .Add_S ();};_ccf .Add_Q ();return _ccf .Bytes (),_bad .GetBoundingBox ().ToPdfRectangle (),nil ;};
+func (_gdaf PolyBezierCurve )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){if _gdaf .BorderColor ==nil {_gdaf .BorderColor =_bg .NewPdfColorDeviceRGB (0,0,0);};_fbd :=NewCubicBezierPath ();for _ ,_ag :=range _gdaf .Curves {_fbd =_fbd .AppendCurve (_ag );};_ga :=_c .NewContentCreator ();_ga .Add_q ();_gdaf .FillEnabled =_gdaf .FillEnabled &&_gdaf .FillColor !=nil ;if _gdaf .FillEnabled {_ga .Add_rg (_gdaf .FillColor .R (),_gdaf .FillColor .G (),_gdaf .FillColor .B ());};_ga .Add_RG (_gdaf .BorderColor .R (),_gdaf .BorderColor .G (),_gdaf .BorderColor .B ());_ga .Add_w (_gdaf .BorderWidth );if len (gsName )> 1{_ga .Add_gs (_f .PdfObjectName (gsName ));};for _ ,_cdd :=range _fbd .Curves {_ga .Add_m (_cdd .P0 .X ,_cdd .P0 .Y );_ga .Add_c (_cdd .P1 .X ,_cdd .P1 .Y ,_cdd .P2 .X ,_cdd .P2 .Y ,_cdd .P3 .X ,_cdd .P3 .Y );};if _gdaf .FillEnabled {_ga .Add_h ();_ga .Add_B ();}else {_ga .Add_S ();};_ga .Add_Q ();return _ga .Bytes (),_fbd .GetBoundingBox ().ToPdfRectangle (),nil ;};
 
-// AddVector adds vector to a point.
-func (_acc Point )AddVector (v Vector )Point {_acc .X +=v .Dx ;_acc .Y +=v .Dy ;return _acc };
+// NewVector returns a new vector with the direction specified by dx and dy.
+func NewVector (dx ,dy float64 )Vector {_cgg :=Vector {};_cgg .Dx =dx ;_cgg .Dy =dy ;return _cgg };
+
+// Copy returns a clone of the path.
+func (_be Path )Copy ()Path {_de :=Path {};_de .Points =[]Point {};for _ ,_dge :=range _be .Points {_de .Points =append (_de .Points ,_dge );};return _de ;};
+
+// Rotate returns a new Point at `p` rotated by `theta` degrees.
+func (_eed Point )Rotate (theta float64 )Point {_aeb :=_e .NewPoint (_eed .X ,_eed .Y ).Rotate (theta );return NewPoint (_aeb .X ,_aeb .Y );};
+
+// NewPath returns a new empty path.
+func NewPath ()Path {return Path {}};
+
+// Copy returns a clone of the Bezier path.
+func (_ee CubicBezierPath )Copy ()CubicBezierPath {_dg :=CubicBezierPath {};_dg .Curves =[]CubicBezierCurve {};for _ ,_abb :=range _ee .Curves {_dg .Curves =append (_dg .Curves ,_abb );};return _dg ;};
+
+// NewCubicBezierCurve returns a new cubic Bezier curve.
+func NewCubicBezierCurve (x0 ,y0 ,x1 ,y1 ,x2 ,y2 ,x3 ,y3 float64 )CubicBezierCurve {_fa :=CubicBezierCurve {};_fa .P0 =NewPoint (x0 ,y0 );_fa .P1 =NewPoint (x1 ,y1 );_fa .P2 =NewPoint (x2 ,y2 );_fa .P3 =NewPoint (x3 ,y3 );return _fa ;};
+
+// PolyBezierCurve represents a composite curve that is the result of
+// joining multiple cubic Bezier curves.
+type PolyBezierCurve struct{Curves []CubicBezierCurve ;BorderWidth float64 ;BorderColor *_bg .PdfColorDeviceRGB ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;};
+
+// Circle represents a circle shape with fill and border properties that can be drawn to a PDF content stream.
+type Circle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;};
 
 // NewVectorBetween returns a new vector with the direction specified by
 // the subtraction of point a from point b (b-a).
-func NewVectorBetween (a Point ,b Point )Vector {_feb :=Vector {};_feb .Dx =b .X -a .X ;_feb .Dy =b .Y -a .Y ;return _feb ;};
+func NewVectorBetween (a Point ,b Point )Vector {_gdeg :=Vector {};_gdeg .Dx =b .X -a .X ;_gdeg .Dy =b .Y -a .Y ;return _gdeg ;};
 
-// NewCubicBezierCurve returns a new cubic Bezier curve.
-func NewCubicBezierCurve (x0 ,y0 ,x1 ,y1 ,x2 ,y2 ,x3 ,y3 float64 )CubicBezierCurve {_d :=CubicBezierCurve {};_d .P0 =NewPoint (x0 ,y0 );_d .P1 =NewPoint (x1 ,y1 );_d .P2 =NewPoint (x2 ,y2 );_d .P3 =NewPoint (x3 ,y3 );return _d ;};
+// AppendPoint adds the specified point to the path.
+func (_cd Path )AppendPoint (point Point )Path {_cd .Points =append (_cd .Points ,point );return _cd };
 
-// Offset shifts the Bezier path with the specified offsets.
-func (_gf CubicBezierPath )Offset (offX ,offY float64 )CubicBezierPath {for _df ,_ff :=range _gf .Curves {_gf .Curves [_df ]=_ff .AddOffsetXY (offX ,offY );};return _gf ;};
+// FlipX flips the sign of the Dx component of the vector.
+func (_cdae Vector )FlipX ()Vector {_cdae .Dx =-_cdae .Dx ;return _cdae };
 
-// Rectangle is a shape with a specified Width and Height and a lower left corner at (X,Y) that can be
-// drawn to a PDF content stream.  The rectangle can optionally have a border and a filling color.
-// The Width/Height includes the border (if any specified), i.e. is positioned inside.
-type Rectangle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_c .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_c .PdfColorDeviceRGB ;Opacity float64 ;};
+// Scale scales the vector by the specified factor.
+func (_fe Vector )Scale (factor float64 )Vector {_ggde :=_fe .Magnitude ();_eda :=_fe .GetPolarAngle ();_fe .Dx =factor *_ggde *_b .Cos (_eda );_fe .Dy =factor *_ggde *_b .Sin (_eda );return _fe ;};
 
-// Copy returns a clone of the path.
-func (_fc Path )Copy ()Path {_dcgg :=Path {};_dcgg .Points =[]Point {};for _ ,_fd :=range _fc .Points {_dcgg .Points =append (_dcgg .Points ,_fd );};return _dcgg ;};
+// AddVector adds vector to a point.
+func (_eeg Point )AddVector (v Vector )Point {_eeg .X +=v .Dx ;_eeg .Y +=v .Dy ;return _eeg };
+
+// Draw draws the polygon. A graphics state name can be specified for
+// setting the polygon properties (e.g. setting the opacity). Otherwise leave
+// empty (""). Returns the content stream as a byte array and the polygon
+// bounding box.
+func (_gbc Polygon )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_beb :=_c .NewContentCreator ();_beb .Add_q ();_gbc .FillEnabled =_gbc .FillEnabled &&_gbc .FillColor !=nil ;if _gbc .FillEnabled {_beb .Add_rg (_gbc .FillColor .R (),_gbc .FillColor .G (),_gbc .FillColor .B ());};_gbc .BorderEnabled =_gbc .BorderEnabled &&_gbc .BorderColor !=nil ;if _gbc .BorderEnabled {_beb .Add_RG (_gbc .BorderColor .R (),_gbc .BorderColor .G (),_gbc .BorderColor .B ());_beb .Add_w (_gbc .BorderWidth );};if len (gsName )> 1{_beb .Add_gs (_f .PdfObjectName (gsName ));};_fgd :=NewPath ();for _ ,_bcb :=range _gbc .Points {for _gag ,_edb :=range _bcb {_fgd =_fgd .AppendPoint (_edb );if _gag ==0{_beb .Add_m (_edb .X ,_edb .Y );}else {_beb .Add_l (_edb .X ,_edb .Y );};};_beb .Add_h ();};if _gbc .FillEnabled &&_gbc .BorderEnabled {_beb .Add_B ();}else if _gbc .FillEnabled {_beb .Add_f ();}else if _gbc .BorderEnabled {_beb .Add_S ();};_beb .Add_Q ();return _beb .Bytes (),_fgd .GetBoundingBox ().ToPdfRectangle (),nil ;};
+
+// Draw draws the line to PDF contentstream. Generates the content stream which can be used in page contents or
+// appearance stream of annotation. Returns the stream content, XForm bounding box (local), bounding box and an error
+// if one occurred.
+func (_gdac Line )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_aga ,_dfa :=_gdac .X1 ,_gdac .X2 ;_gaa ,_cf :=_gdac .Y1 ,_gdac .Y2 ;_gff :=_cf -_gaa ;_bga :=_dfa -_aga ;_dba :=_b .Atan2 (_gff ,_bga );L :=_b .Sqrt (_b .Pow (_bga ,2.0)+_b .Pow (_gff ,2.0));_edg :=_gdac .LineWidth ;_aa :=_b .Pi ;_ef :=1.0;if _bga < 0{_ef *=-1.0;};if _gff < 0{_ef *=-1.0;};VsX :=_ef *(-_edg /2*_b .Cos (_dba +_aa /2));VsY :=_ef *(-_edg /2*_b .Sin (_dba +_aa /2)+_edg *_b .Sin (_dba +_aa /2));V1X :=VsX +_edg /2*_b .Cos (_dba +_aa /2);V1Y :=VsY +_edg /2*_b .Sin (_dba +_aa /2);V2X :=VsX +_edg /2*_b .Cos (_dba +_aa /2)+L *_b .Cos (_dba );V2Y :=VsY +_edg /2*_b .Sin (_dba +_aa /2)+L *_b .Sin (_dba );V3X :=VsX +_edg /2*_b .Cos (_dba +_aa /2)+L *_b .Cos (_dba )+_edg *_b .Cos (_dba -_aa /2);V3Y :=VsY +_edg /2*_b .Sin (_dba +_aa /2)+L *_b .Sin (_dba )+_edg *_b .Sin (_dba -_aa /2);V4X :=VsX +_edg /2*_b .Cos (_dba -_aa /2);V4Y :=VsY +_edg /2*_b .Sin (_dba -_aa /2);_fba :=NewPath ();_fba =_fba .AppendPoint (NewPoint (V1X ,V1Y ));_fba =_fba .AppendPoint (NewPoint (V2X ,V2Y ));_fba =_fba .AppendPoint (NewPoint (V3X ,V3Y ));_fba =_fba .AppendPoint (NewPoint (V4X ,V4Y ));_ba :=_gdac .LineEndingStyle1 ;_cfb :=_gdac .LineEndingStyle2 ;_bea :=3*_edg ;_gc :=3*_edg ;_gba :=(_gc -_edg )/2;if _cfb ==LineEndingStyleArrow {_gea :=_fba .GetPointNumber (2);_bf :=NewVectorPolar (_bea ,_dba +_aa );_ffa :=_gea .AddVector (_bf );_cg :=NewVectorPolar (_gc /2,_dba +_aa /2);_fge :=NewVectorPolar (_bea ,_dba );_dbd :=NewVectorPolar (_gba ,_dba +_aa /2);_fac :=_ffa .AddVector (_dbd );_bgdd :=_fge .Add (_cg .Flip ());_afg :=_fac .AddVector (_bgdd );_gffa :=_cg .Scale (2).Flip ().Add (_bgdd .Flip ());_bfg :=_afg .AddVector (_gffa );_geb :=_ffa .AddVector (NewVectorPolar (_edg ,_dba -_aa /2));_gde :=NewPath ();_gde =_gde .AppendPoint (_fba .GetPointNumber (1));_gde =_gde .AppendPoint (_ffa );_gde =_gde .AppendPoint (_fac );_gde =_gde .AppendPoint (_afg );_gde =_gde .AppendPoint (_bfg );_gde =_gde .AppendPoint (_geb );_gde =_gde .AppendPoint (_fba .GetPointNumber (4));_fba =_gde ;};if _ba ==LineEndingStyleArrow {_cga :=_fba .GetPointNumber (1);_cba :=_fba .GetPointNumber (_fba .Length ());_bca :=NewVectorPolar (_edg /2,_dba +_aa +_aa /2);_abg :=_cga .AddVector (_bca );_beae :=NewVectorPolar (_bea ,_dba ).Add (NewVectorPolar (_gc /2,_dba +_aa /2));_bed :=_abg .AddVector (_beae );_caf :=NewVectorPolar (_gba ,_dba -_aa /2);_gaaa :=_bed .AddVector (_caf );_bgb :=NewVectorPolar (_bea ,_dba );_fd :=_cba .AddVector (_bgb );_ccb :=NewVectorPolar (_gba ,_dba +_aa +_aa /2);_dda :=_fd .AddVector (_ccb );_egde :=_abg ;_gaf :=NewPath ();_gaf =_gaf .AppendPoint (_abg );_gaf =_gaf .AppendPoint (_bed );_gaf =_gaf .AppendPoint (_gaaa );for _ ,_ffad :=range _fba .Points [1:len (_fba .Points )-1]{_gaf =_gaf .AppendPoint (_ffad );};_gaf =_gaf .AppendPoint (_fd );_gaf =_gaf .AppendPoint (_dda );_gaf =_gaf .AppendPoint (_egde );_fba =_gaf ;};_bgg :=_c .NewContentCreator ();_bgg .Add_q ().Add_rg (_gdac .LineColor .R (),_gdac .LineColor .G (),_gdac .LineColor .B ());if len (gsName )> 1{_bgg .Add_gs (_f .PdfObjectName (gsName ));};_fba =_fba .Offset (_gdac .X1 ,_gdac .Y1 );_fgc :=_fba .GetBoundingBox ();DrawPathWithCreator (_fba ,_bgg );if _gdac .LineStyle ==LineStyleDashed {_bgg .Add_d ([]int64 {1,1},0).Add_S ().Add_f ().Add_Q ();}else {_bgg .Add_f ().Add_Q ();};return _bgg .Bytes (),_fgc .ToPdfRectangle (),nil ;};
+
+// GetBoundingBox returns the bounding box of the path.
+func (_acg Path )GetBoundingBox ()BoundingBox {_gbg :=BoundingBox {};_adf :=0.0;_fg :=0.0;_egd :=0.0;_deg :=0.0;for _ff ,_eac :=range _acg .Points {if _ff ==0{_adf =_eac .X ;_fg =_eac .X ;_egd =_eac .Y ;_deg =_eac .Y ;continue ;};if _eac .X < _adf {_adf =_eac .X ;};if _eac .X > _fg {_fg =_eac .X ;};if _eac .Y < _egd {_egd =_eac .Y ;};if _eac .Y > _deg {_deg =_eac .Y ;};};_gbg .X =_adf ;_gbg .Y =_egd ;_gbg .Width =_fg -_adf ;_gbg .Height =_deg -_egd ;return _gbg ;};
+
+// Polygon is a multi-point shape that can be drawn to a PDF content stream.
+type Polygon struct{Points [][]Point ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;BorderEnabled bool ;BorderColor *_bg .PdfColorDeviceRGB ;BorderWidth float64 ;};
+
+// NewCubicBezierPath returns a new empty cubic Bezier path.
+func NewCubicBezierPath ()CubicBezierPath {_ed :=CubicBezierPath {};_ed .Curves =[]CubicBezierCurve {};return _ed ;};
+
+// Point represents a two-dimensional point.
+type Point struct{X float64 ;Y float64 ;};
 
 // LineEndingStyle defines the line ending style for lines.
 // The currently supported line ending styles are None, Arrow (ClosedArrow) and Butt.
 type LineEndingStyle int ;
 
-// Add shifts the coordinates of the point with dx, dy and returns the result.
-func (_db Point )Add (dx ,dy float64 )Point {_db .X +=dx ;_db .Y +=dy ;return _db };
+// BasicLine defines a line between point 1 (X1,Y1) and point 2 (X2,Y2). The line has a specified width, color and opacity.
+type BasicLine struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineStyle LineStyle ;};
 
-// AddOffsetXY adds X,Y offset to all points on a curve.
-func (_dc CubicBezierCurve )AddOffsetXY (offX ,offY float64 )CubicBezierCurve {_dc .P0 .X +=offX ;_dc .P1 .X +=offX ;_dc .P2 .X +=offX ;_dc .P3 .X +=offX ;_dc .P0 .Y +=offY ;_dc .P1 .Y +=offY ;_dc .P2 .Y +=offY ;_dc .P3 .Y +=offY ;return _dc ;};func (_gb Point )String ()string {return _e .Sprintf ("(\u0025\u002e\u0031\u0066\u002c\u0025\u002e\u0031\u0066\u0029",_gb .X ,_gb .Y );};
+// Draw draws the circle. Can specify a graphics state (gsName) for setting opacity etc.  Otherwise leave empty ("").
+// Returns the content stream as a byte array, the bounding box and an error on failure.
+func (_cc Circle )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_da :=_cc .Width /2;_ge :=_cc .Height /2;if _cc .BorderEnabled {_da -=_cc .BorderWidth /2;_ge -=_cc .BorderWidth /2;};_fce :=0.551784;_faa :=_da *_fce ;_ggfg :=_ge *_fce ;_acgd :=NewCubicBezierPath ();_acgd =_acgd .AppendCurve (NewCubicBezierCurve (-_da ,0,-_da ,_ggfg ,-_faa ,_ge ,0,_ge ));_acgd =_acgd .AppendCurve (NewCubicBezierCurve (0,_ge ,_faa ,_ge ,_da ,_ggfg ,_da ,0));_acgd =_acgd .AppendCurve (NewCubicBezierCurve (_da ,0,_da ,-_ggfg ,_faa ,-_ge ,0,-_ge ));_acgd =_acgd .AppendCurve (NewCubicBezierCurve (0,-_ge ,-_faa ,-_ge ,-_da ,-_ggfg ,-_da ,0));_acgd =_acgd .Offset (_da ,_ge );if _cc .BorderEnabled {_acgd =_acgd .Offset (_cc .BorderWidth /2,_cc .BorderWidth /2);};if _cc .X !=0||_cc .Y !=0{_acgd =_acgd .Offset (_cc .X ,_cc .Y );};_dce :=_c .NewContentCreator ();_dce .Add_q ();if _cc .FillEnabled {_dce .Add_rg (_cc .FillColor .R (),_cc .FillColor .G (),_cc .FillColor .B ());};if _cc .BorderEnabled {_dce .Add_RG (_cc .BorderColor .R (),_cc .BorderColor .G (),_cc .BorderColor .B ());_dce .Add_w (_cc .BorderWidth );};if len (gsName )> 1{_dce .Add_gs (_f .PdfObjectName (gsName ));};DrawBezierPathWithCreator (_acgd ,_dce );_dce .Add_h ();if _cc .FillEnabled &&_cc .BorderEnabled {_dce .Add_B ();}else if _cc .FillEnabled {_dce .Add_f ();}else if _cc .BorderEnabled {_dce .Add_S ();};_dce .Add_Q ();_ffc :=_acgd .GetBoundingBox ();if _cc .BorderEnabled {_ffc .Height +=_cc .BorderWidth ;_ffc .Width +=_cc .BorderWidth ;_ffc .X -=_cc .BorderWidth /2;_ffc .Y -=_cc .BorderWidth /2;};return _dce .Bytes (),_ffc .ToPdfRectangle (),nil ;};
 
 // FlipY flips the sign of the Dy component of the vector.
-func (_fab Vector )FlipY ()Vector {_fab .Dy =-_fab .Dy ;return _fab };const (LineStyleSolid LineStyle =0;LineStyleDashed LineStyle =1;);
+func (_fbb Vector )FlipY ()Vector {_fbb .Dy =-_fbb .Dy ;return _fbb };
+
+// BoundingBox represents the smallest rectangular area that encapsulates an object.
+type BoundingBox struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;};
+
+// DrawPathWithCreator makes the path with the content creator.
+// Adds the PDF commands to draw the path to the creator instance.
+func DrawPathWithCreator (path Path ,creator *_c .ContentCreator ){for _acdd ,_ec :=range path .Points {if _acdd ==0{creator .Add_m (_ec .X ,_ec .Y );}else {creator .Add_l (_ec .X ,_ec .Y );};};};
+
+// Offset shifts the path with the specified offsets.
+func (_ce Path )Offset (offX ,offY float64 )Path {for _eg ,_db :=range _ce .Points {_ce .Points [_eg ]=_db .Add (offX ,offY );};return _ce ;};
+
+// Line defines a line shape between point 1 (X1,Y1) and point 2 (X2,Y2).  The line ending styles can be none (regular line),
+// or arrows at either end.  The line also has a specified width, color and opacity.
+type Line struct{X1 float64 ;Y1 float64 ;X2 float64 ;Y2 float64 ;LineColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineEndingStyle1 LineEndingStyle ;LineEndingStyle2 LineEndingStyle ;LineStyle LineStyle ;};
+
+// GetPointNumber returns the path point at the index specified by number.
+// The index is 1-based.
+func (_ac Path )GetPointNumber (number int )Point {if number < 1||number > len (_ac .Points ){return Point {};};return _ac .Points [number -1];};
 
 // Draw draws the polyline. A graphics state name can be specified for
 // setting the polyline properties (e.g. setting the opacity). Otherwise leave
 // empty (""). Returns the content stream as a byte array and the polyline
 // bounding box.
-func (_fcc Polyline )Draw (gsName string )([]byte ,*_c .PdfRectangle ,error ){if _fcc .LineColor ==nil {_fcc .LineColor =_c .NewPdfColorDeviceRGB (0,0,0);};_eff :=NewPath ();for _ ,_addg :=range _fcc .Points {_eff =_eff .AppendPoint (_addg );};_fca :=_gg .NewContentCreator ();_fca .Add_q ();_fca .Add_RG (_fcc .LineColor .R (),_fcc .LineColor .G (),_fcc .LineColor .B ());_fca .Add_w (_fcc .LineWidth );if len (gsName )> 1{_fca .Add_gs (_cb .PdfObjectName (gsName ));};DrawPathWithCreator (_eff ,_fca );_fca .Add_S ();_fca .Add_Q ();return _fca .Bytes (),_eff .GetBoundingBox ().ToPdfRectangle (),nil ;};
+func (_dbab Polyline )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){if _dbab .LineColor ==nil {_dbab .LineColor =_bg .NewPdfColorDeviceRGB (0,0,0);};_eagd :=NewPath ();for _ ,_fdd :=range _dbab .Points {_eagd =_eagd .AppendPoint (_fdd );};_cdc :=_c .NewContentCreator ();_cdc .Add_q ();_cdc .Add_RG (_dbab .LineColor .R (),_dbab .LineColor .G (),_dbab .LineColor .B ());_cdc .Add_w (_dbab .LineWidth );if len (gsName )> 1{_cdc .Add_gs (_f .PdfObjectName (gsName ));};DrawPathWithCreator (_eagd ,_cdc );_cdc .Add_S ();_cdc .Add_Q ();return _cdc .Bytes (),_eagd .GetBoundingBox ().ToPdfRectangle (),nil ;};
 
-// AppendPoint adds the specified point to the path.
-func (_fg Path )AppendPoint (point Point )Path {_fg .Points =append (_fg .Points ,point );return _fg };
+// Magnitude returns the magnitude of the vector.
+func (_aebe Vector )Magnitude ()float64 {return _b .Sqrt (_b .Pow (_aebe .Dx ,2.0)+_b .Pow (_aebe .Dy ,2.0));};
 
-// NewVector returns a new vector with the direction specified by dx and dy.
-func NewVector (dx ,dy float64 )Vector {_fdb :=Vector {};_fdb .Dx =dx ;_fdb .Dy =dy ;return _fdb };
+// Flip changes the sign of the vector: -vector.
+func (_ffae Vector )Flip ()Vector {_gdg :=_ffae .Magnitude ();_eaf :=_ffae .GetPolarAngle ();_ffae .Dx =_gdg *_b .Cos (_eaf +_b .Pi );_ffae .Dy =_gdg *_b .Sin (_eaf +_b .Pi );return _ffae ;};
 
-// NewCubicBezierPath returns a new empty cubic Bezier path.
-func NewCubicBezierPath ()CubicBezierPath {_cc :=CubicBezierPath {};_cc .Curves =[]CubicBezierCurve {};return _cc ;};
+// GetBounds returns the bounding box of the Bezier curve.
+func (_bc CubicBezierCurve )GetBounds ()_bg .PdfRectangle {_cb :=_bc .P0 .X ;_dd :=_bc .P0 .X ;_ea :=_bc .P0 .Y ;_ca :=_bc .P0 .Y ;for _ae :=0.0;_ae <=1.0;_ae +=0.001{Rx :=_bc .P0 .X *_b .Pow (1-_ae ,3)+_bc .P1 .X *3*_ae *_b .Pow (1-_ae ,2)+_bc .P2 .X *3*_b .Pow (_ae ,2)*(1-_ae )+_bc .P3 .X *_b .Pow (_ae ,3);Ry :=_bc .P0 .Y *_b .Pow (1-_ae ,3)+_bc .P1 .Y *3*_ae *_b .Pow (1-_ae ,2)+_bc .P2 .Y *3*_b .Pow (_ae ,2)*(1-_ae )+_bc .P3 .Y *_b .Pow (_ae ,3);if Rx < _cb {_cb =Rx ;};if Rx > _dd {_dd =Rx ;};if Ry < _ea {_ea =Ry ;};if Ry > _ca {_ca =Ry ;};};_ab :=_bg .PdfRectangle {};_ab .Llx =_cb ;_ab .Lly =_ea ;_ab .Urx =_dd ;_ab .Ury =_ca ;return _ab ;};
 
-// Offset shifts the path with the specified offsets.
-func (_afe Path )Offset (offX ,offY float64 )Path {for _fdg ,_fgc :=range _afe .Points {_afe .Points [_fdg ]=_fgc .Add (offX ,offY );};return _afe ;};
+// DrawBezierPathWithCreator makes the bezier path with the content creator.
+// Adds the PDF commands to draw the path to the creator instance.
+func DrawBezierPathWithCreator (bpath CubicBezierPath ,creator *_c .ContentCreator ){for _efg ,_cag :=range bpath .Curves {if _efg ==0{creator .Add_m (_cag .P0 .X ,_cag .P0 .Y );};creator .Add_c (_cag .P1 .X ,_cag .P1 .Y ,_cag .P2 .X ,_cag .P2 .Y ,_cag .P3 .X ,_cag .P3 .Y );};};
+
+// AppendCurve appends the specified Bezier curve to the path.
+func (_eae CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_eae .Curves =append (_eae .Curves ,curve );return _eae ;};
+
+// LineStyle refers to how the line will be created.
+type LineStyle int ;
+
+// Rotate rotates the vector by the specified angle.
+func (_dfd Vector )Rotate (phi float64 )Vector {_gdegb :=_dfd .Magnitude ();_ace :=_dfd .GetPolarAngle ();return NewVectorPolar (_gdegb ,_ace +phi );};
+
+// AddOffsetXY adds X,Y offset to all points on a curve.
+func (_d CubicBezierCurve )AddOffsetXY (offX ,offY float64 )CubicBezierCurve {_d .P0 .X +=offX ;_d .P1 .X +=offX ;_d .P2 .X +=offX ;_d .P3 .X +=offX ;_d .P0 .Y +=offY ;_d .P1 .Y +=offY ;_d .P2 .Y +=offY ;_d .P3 .Y +=offY ;return _d ;};
+
+// Length returns the number of points in the path.
+func (_ade Path )Length ()int {return len (_ade .Points )};
+
+// CubicBezierPath represents a collection of cubic Bezier curves.
+type CubicBezierPath struct{Curves []CubicBezierCurve ;};
+
+// Offset shifts the Bezier path with the specified offsets.
+func (_af CubicBezierPath )Offset (offX ,offY float64 )CubicBezierPath {for _gb ,_dc :=range _af .Curves {_af .Curves [_gb ]=_dc .AddOffsetXY (offX ,offY );};return _af ;};
+
+// GetBoundingBox returns the bounding box of the Bezier path.
+func (_fb CubicBezierPath )GetBoundingBox ()Rectangle {_fc :=Rectangle {};_eb :=0.0;_eag :=0.0;_gge :=0.0;_gf :=0.0;for _ggf ,_ad :=range _fb .Curves {_df :=_ad .GetBounds ();if _ggf ==0{_eb =_df .Llx ;_eag =_df .Urx ;_gge =_df .Lly ;_gf =_df .Ury ;continue ;};if _df .Llx < _eb {_eb =_df .Llx ;};if _df .Urx > _eag {_eag =_df .Urx ;};if _df .Lly < _gge {_gge =_df .Lly ;};if _df .Ury > _gf {_gf =_df .Ury ;};};_fc .X =_eb ;_fc .Y =_gge ;_fc .Width =_eag -_eb ;_fc .Height =_gf -_gge ;return _fc ;};
+
+// Polyline defines a slice of points that are connected as straight lines.
+type Polyline struct{Points []Point ;LineColor *_bg .PdfColorDeviceRGB ;LineWidth float64 ;};
+
+// Add adds the specified vector to the current one and returns the result.
+func (_gbe Vector )Add (other Vector )Vector {_gbe .Dx +=other .Dx ;_gbe .Dy +=other .Dy ;return _gbe };
+
+// Vector represents a two-dimensional vector.
+type Vector struct{Dx float64 ;Dy float64 ;};func (_gbf Point )String ()string {return _g .Sprintf ("(\u0025\u002e\u0031\u0066\u002c\u0025\u002e\u0031\u0066\u0029",_gbf .X ,_gbf .Y );};
+
+// GetPolarAngle returns the angle the magnitude of the vector forms with the
+// positive X-axis going counterclockwise.
+func (_abc Vector )GetPolarAngle ()float64 {return _b .Atan2 (_abc .Dy ,_abc .Dx )};const (LineEndingStyleNone LineEndingStyle =0;LineEndingStyleArrow LineEndingStyle =1;LineEndingStyleButt LineEndingStyle =2;);
+
+// Rectangle is a shape with a specified Width and Height and a lower left corner at (X,Y) that can be
+// drawn to a PDF content stream.  The rectangle can optionally have a border and a filling color.
+// The Width/Height includes the border (if any specified), i.e. is positioned inside.
+type Rectangle struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;FillEnabled bool ;FillColor *_bg .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_bg .PdfColorDeviceRGB ;Opacity float64 ;};
+
+// Draw draws the rectangle. Can specify a graphics state (gsName) for setting opacity etc.
+// Otherwise leave empty (""). Returns the content stream as a byte array, bounding box and an error on failure.
+func (_def Rectangle )Draw (gsName string )([]byte ,*_bg .PdfRectangle ,error ){_age :=NewPath ();_age =_age .AppendPoint (NewPoint (0,0));_age =_age .AppendPoint (NewPoint (0,_def .Height ));_age =_age .AppendPoint (NewPoint (_def .Width ,_def .Height ));_age =_age .AppendPoint (NewPoint (_def .Width ,0));_age =_age .AppendPoint (NewPoint (0,0));if _def .X !=0||_def .Y !=0{_age =_age .Offset (_def .X ,_def .Y );};_bgd :=_c .NewContentCreator ();_bgd .Add_q ();if _def .FillEnabled {_bgd .Add_rg (_def .FillColor .R (),_def .FillColor .G (),_def .FillColor .B ());};if _def .BorderEnabled {_bgd .Add_RG (_def .BorderColor .R (),_def .BorderColor .G (),_def .BorderColor .B ());_bgd .Add_w (_def .BorderWidth );};if len (gsName )> 1{_bgd .Add_gs (_f .PdfObjectName (gsName ));};DrawPathWithCreator (_age ,_bgd );_bgd .Add_h ();if _def .FillEnabled &&_def .BorderEnabled {_bgd .Add_B ();}else if _def .FillEnabled {_bgd .Add_f ();}else if _def .BorderEnabled {_bgd .Add_S ();};_bgd .Add_Q ();return _bgd .Bytes (),_age .GetBoundingBox ().ToPdfRectangle (),nil ;};
+
+// NewVectorPolar returns a new vector calculated from the specified
+// magnitude and angle.
+func NewVectorPolar (length float64 ,theta float64 )Vector {_bcd :=Vector {};_bcd .Dx =length *_b .Cos (theta );_bcd .Dy =length *_b .Sin (theta );return _bcd ;};

core/security/crypt/crypt.go

@@ -9,34 +9,40 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package crypt ;import (_fe "crypto/aes";_g "crypto/cipher";_d "crypto/md5";_dc "crypto/rand";_c "crypto/rc4";_e "fmt";_b "github.com/unidoc/unipdf/v3/common";_ef "github.com/unidoc/unipdf/v3/core/security";_f "io";);func init (){_acg ("\u0041\u0045\u0053V\u0032",_eca )};func _ge (_ba ,_ecc uint32 ,_aga []byte ,_ga bool )([]byte ,error ){_bf :=make ([]byte ,len (_aga )+5);for _gf :=0;_gf < len (_aga );_gf ++{_bf [_gf ]=_aga [_gf ];};for _aa :=0;_aa < 3;_aa ++{_bfe :=byte ((_ba >>uint32 (8*_aa ))&0xff);_bf [_aa +len (_aga )]=_bfe ;};for _dag :=0;_dag < 2;_dag ++{_ccf :=byte ((_ecc >>uint32 (8*_dag ))&0xff);_bf [_dag +len (_aga )+3]=_ccf ;};if _ga {_bf =append (_bf ,0x73);_bf =append (_bf ,0x41);_bf =append (_bf ,0x6C);_bf =append (_bf ,0x54);};_gag :=_d .New ();_gag .Write (_bf );_fegb :=_gag .Sum (nil );if len (_aga )+5< 16{return _fegb [0:len (_aga )+5],nil ;};return _fegb ,nil ;};
-
-// Name implements Filter interface.
-func (filterAESV2 )Name ()string {return "\u0041\u0045\u0053V\u0032"};func (filterIdentity )EncryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func _acg (_dec string ,_gfd filterFunc ){if _ ,_dfg :=_dd [_dec ];_dfg {panic ("\u0061l\u0072e\u0061\u0064\u0079\u0020\u0072e\u0067\u0069s\u0074\u0065\u0072\u0065\u0064");};_dd [_dec ]=_gfd ;};func _ag (_ae FilterDict )(Filter ,error ){if _ae .Length ==256{_b .Log .Debug ("\u0041\u0045S\u0056\u0033\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_ae .Length );_ae .Length /=8;};if _ae .Length !=0&&_ae .Length !=32{return nil ,_e .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0033\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_ae .Length );};return filterAESV3 {},nil ;};
-
-// PDFVersion implements Filter interface.
-func (_bbef filterV2 )PDFVersion ()[2]int {return [2]int {}};
+package crypt ;import (_fe "crypto/aes";_g "crypto/cipher";_fd "crypto/md5";_c "crypto/rand";_ec "crypto/rc4";_a "fmt";_ff "github.com/unidoc/unipdf/v3/common";_ab "github.com/unidoc/unipdf/v3/core/security";_e "io";);func init (){_gfg ("\u0041\u0045\u0053V\u0032",_abf )};func _abf (_ac FilterDict )(Filter ,error ){if _ac .Length ==128{_ff .Log .Debug ("\u0041\u0045S\u0056\u0032\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_ac .Length );_ac .Length /=8;};if _ac .Length !=0&&_ac .Length !=16{return nil ,_a .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0032\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_ac .Length );};return filterAESV2 {},nil ;};type filterIdentity struct{};
 
 // KeyLength implements Filter interface.
-func (_gff filterV2 )KeyLength ()int {return _gff ._ggf };
+func (filterAESV3 )KeyLength ()int {return 256/8};
+
+// NewFilter creates CryptFilter from a corresponding dictionary.
+func NewFilter (d FilterDict )(Filter ,error ){_fbe ,_fbf :=_bae (d .CFM );if _fbf !=nil {return nil ,_fbf ;};_ca ,_fbf :=_fbe (d );if _fbf !=nil {return nil ,_fbf ;};return _ca ,nil ;};
+
+// KeyLength implements Filter interface.
+func (_bbe filterV2 )KeyLength ()int {return _bbe ._ade };
+
+// NewFilterAESV3 creates an AES-based filter with a 256 bit key (AESV3).
+func NewFilterAESV3 ()Filter {_fa ,_ce :=_dg (FilterDict {});if _ce !=nil {_ff .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0033\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_ce );return filterAESV3 {};};return _fa ;};
+
+// FilterDict represents information from a CryptFilter dictionary.
+type FilterDict struct{CFM string ;AuthEvent _ab .AuthEvent ;Length int ;};
 
 // Name implements Filter interface.
-func (filterV2 )Name ()string {return "\u0056\u0032"};
+func (filterAESV2 )Name ()string {return "\u0041\u0045\u0053V\u0032"};var _ Filter =filterAESV2 {};func init (){_gfg ("\u0041\u0045\u0053V\u0033",_dg )};type filterV2 struct{_ade int };
 
-// PDFVersion implements Filter interface.
-func (filterAESV2 )PDFVersion ()[2]int {return [2]int {1,5}};func init (){_acg ("\u0041\u0045\u0053V\u0033",_ag )};func (filterIdentity )PDFVersion ()[2]int {return [2]int {}};
+// MakeKey implements Filter interface.
+func (_ge filterV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ffb (objNum ,genNum ,ekey ,false );};
+
+// NewFilterV2 creates a RC4-based filter with a specified key length (in bytes).
+func NewFilterV2 (length int )Filter {_gc ,_ef :=_cd (FilterDict {Length :length });if _ef !=nil {_ff .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020R\u0043\u0034\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_ef );return filterV2 {_ade :length };};return _gc ;};
+
+// MakeKey implements Filter interface.
+func (filterAESV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ffb (objNum ,genNum ,ekey ,true );};func (filterAES )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_gg ,_bb :=_fe .NewCipher (okey );if _bb !=nil {return nil ,_bb ;};if len (buf )< 16{_ff .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020\u0041\u0045\u0053\u0020\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0062\u0075\u0066\u0020\u0025\u0073",buf );return buf ,_a .Errorf ("\u0041\u0045\u0053\u003a B\u0075\u0066\u0020\u006c\u0065\u006e\u0020\u003c\u0020\u0031\u0036\u0020\u0028\u0025d\u0029",len (buf ));};_ga :=buf [:16];buf =buf [16:];if len (buf )%16!=0{_ff .Log .Debug ("\u0020\u0069\u0076\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (_ga ),_ga );_ff .Log .Debug ("\u0062\u0075\u0066\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,_a .Errorf ("\u0041\u0045\u0053\u0020\u0062\u0075\u0066\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069p\u006c\u0065\u0020\u006f\u0066 \u0031\u0036 \u0028\u0025\u0064\u0029",len (buf ));};_ecf :=_g .NewCBCDecrypter (_gg ,_ga );_ff .Log .Trace ("A\u0045\u0053\u0020\u0044ec\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );_ff .Log .Trace ("\u0063\u0068\u006f\u0070\u0020\u0041\u0045\u0053\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u0020\u0028\u0025\u0064\u0029\u003a \u0025\u0020\u0078",len (buf ),buf );_ecf .CryptBlocks (buf ,buf );_ff .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );if len (buf )==0{_ff .Log .Trace ("\u0045\u006d\u0070\u0074\u0079\u0020b\u0075\u0066\u002c\u0020\u0072\u0065\u0074\u0075\u0072\u006e\u0069\u006e\u0067 \u0065\u006d\u0070\u0074\u0079\u0020\u0073t\u0072\u0069\u006e\u0067");return buf ,nil ;};_agd :=int (buf [len (buf )-1]);if _agd > len (buf ){_ff .Log .Debug ("\u0049\u006c\u006c\u0065g\u0061\u006c\u0020\u0070\u0061\u0064\u0020\u006c\u0065\u006eg\u0074h\u0020\u0028\u0025\u0064\u0020\u003e\u0020%\u0064\u0029",_agd ,len (buf ));return buf ,_a .Errorf ("\u0069n\u0076a\u006c\u0069\u0064\u0020\u0070a\u0064\u0020l\u0065\u006e\u0067\u0074\u0068");};buf =buf [:len (buf )-_agd ];return buf ,nil ;};type filterAESV2 struct{filterAES };type filterFunc func (_cca FilterDict )(Filter ,error );
 
 // KeyLength implements Filter interface.
 func (filterAESV2 )KeyLength ()int {return 128/8};
 
 // Name implements Filter interface.
-func (filterAESV3 )Name ()string {return "\u0041\u0045\u0053V\u0033"};func (filterAES )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_ca ,_gd :=_fe .NewCipher (okey );if _gd !=nil {return nil ,_gd ;};_b .Log .Trace ("A\u0045\u0053\u0020\u0045nc\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );const _fc =_fe .BlockSize ;_efc :=_fc -len (buf )%_fc ;for _gda :=0;_gda < _efc ;_gda ++{buf =append (buf ,byte (_efc ));};_b .Log .Trace ("\u0050a\u0064d\u0065\u0064\u0020\u0074\u006f \u0025\u0064 \u0062\u0079\u0074\u0065\u0073",len (buf ));_fa :=make ([]byte ,_fc +len (buf ));_ac :=_fa [:_fc ];if _ ,_da :=_f .ReadFull (_dc .Reader ,_ac );_da !=nil {return nil ,_da ;};_eg :=_g .NewCBCEncrypter (_ca ,_ac );_eg .CryptBlocks (_fa [_fc :],buf );buf =_fa ;_b .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,nil ;};
-
-// HandlerVersion implements Filter interface.
-func (filterAESV3 )HandlerVersion ()(V ,R int ){V ,R =5,6;return ;};func _eca (_eff FilterDict )(Filter ,error ){if _eff .Length ==128{_b .Log .Debug ("\u0041\u0045S\u0056\u0032\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_eff .Length );_eff .Length /=8;};if _eff .Length !=0&&_eff .Length !=16{return nil ,_e .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0032\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_eff .Length );};return filterAESV2 {},nil ;};func (filterAES )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_cee ,_acb :=_fe .NewCipher (okey );if _acb !=nil {return nil ,_acb ;};if len (buf )< 16{_b .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020\u0041\u0045\u0053\u0020\u0069\u006e\u0076a\u006c\u0069\u0064\u0020\u0062\u0075\u0066\u0020\u0025\u0073",buf );return buf ,_e .Errorf ("\u0041\u0045\u0053\u003a B\u0075\u0066\u0020\u006c\u0065\u006e\u0020\u003c\u0020\u0031\u0036\u0020\u0028\u0025d\u0029",len (buf ));};_de :=buf [:16];buf =buf [16:];if len (buf )%16!=0{_b .Log .Debug ("\u0020\u0069\u0076\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (_de ),_de );_b .Log .Debug ("\u0062\u0075\u0066\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,_e .Errorf ("\u0041\u0045\u0053\u0020\u0062\u0075\u0066\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069p\u006c\u0065\u0020\u006f\u0066 \u0031\u0036 \u0028\u0025\u0064\u0029",len (buf ));};_ecg :=_g .NewCBCDecrypter (_cee ,_de );_b .Log .Trace ("A\u0045\u0053\u0020\u0044ec\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );_b .Log .Trace ("\u0063\u0068\u006f\u0070\u0020\u0041\u0045\u0053\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u0020\u0028\u0025\u0064\u0029\u003a \u0025\u0020\u0078",len (buf ),buf );_ecg .CryptBlocks (buf ,buf );_b .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );if len (buf )==0{_b .Log .Trace ("\u0045\u006d\u0070\u0074\u0079\u0020b\u0075\u0066\u002c\u0020\u0072\u0065\u0074\u0075\u0072\u006e\u0069\u006e\u0067 \u0065\u006d\u0070\u0074\u0079\u0020\u0073t\u0072\u0069\u006e\u0067");return buf ,nil ;};_fb :=int (buf [len (buf )-1]);if _fb > len (buf ){_b .Log .Debug ("\u0049\u006c\u006c\u0065g\u0061\u006c\u0020\u0070\u0061\u0064\u0020\u006c\u0065\u006eg\u0074h\u0020\u0028\u0025\u0064\u0020\u003e\u0020%\u0064\u0029",_fb ,len (buf ));return buf ,_e .Errorf ("\u0069n\u0076a\u006c\u0069\u0064\u0020\u0070a\u0064\u0020l\u0065\u006e\u0067\u0074\u0068");};buf =buf [:len (buf )-_fb ];return buf ,nil ;};
-
-// HandlerVersion implements Filter interface.
-func (_ea filterV2 )HandlerVersion ()(V ,R int ){V ,R =2,3;return ;};func (filterIdentity )DecryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };type filterFunc func (_cb FilterDict )(Filter ,error );
+func (filterAESV3 )Name ()string {return "\u0041\u0045\u0053V\u0033"};
 
 // Filter is a common interface for crypt filter methods.
 type Filter interface{
@@ -55,54 +61,48 @@ HandlerVersion ()(V ,R int );
 
 // MakeKey generates a object encryption key based on file encryption key and object numbers.
 // Used only for legacy filters - AESV3 doesn't change the key for each object.
-MakeKey (_ace ,_aea uint32 ,_cf []byte )([]byte ,error );
+MakeKey (_db ,_gdg uint32 ,_cff []byte )([]byte ,error );
 
 // EncryptBytes encrypts a buffer using object encryption key, as returned by MakeKey.
 // Implementation may reuse a buffer and encrypt data in-place.
-EncryptBytes (_agac []byte ,_ff []byte )([]byte ,error );
+EncryptBytes (_deg []byte ,_ead []byte )([]byte ,error );
 
 // DecryptBytes decrypts a buffer using object encryption key, as returned by MakeKey.
 // Implementation may reuse a buffer and decrypt data in-place.
-DecryptBytes (_ee []byte ,_bc []byte )([]byte ,error );};
+DecryptBytes (_bg []byte ,_efa []byte )([]byte ,error );};func (filterAES )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_eb ,_dc :=_fe .NewCipher (okey );if _dc !=nil {return nil ,_dc ;};_ff .Log .Trace ("A\u0045\u0053\u0020\u0045nc\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );const _fdg =_fe .BlockSize ;_af :=_fdg -len (buf )%_fdg ;for _ag :=0;_ag < _af ;_ag ++{buf =append (buf ,byte (_af ));};_ff .Log .Trace ("\u0050a\u0064d\u0065\u0064\u0020\u0074\u006f \u0025\u0064 \u0062\u0079\u0074\u0065\u0073",len (buf ));_cf :=make ([]byte ,_fdg +len (buf ));_da :=_cf [:_fdg ];if _ ,_b :=_e .ReadFull (_c .Reader ,_da );_b !=nil {return nil ,_b ;};_fc :=_g .NewCBCEncrypter (_eb ,_da );_fc .CryptBlocks (_cf [_fdg :],buf );buf =_cf ;_ff .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,nil ;};
 
-// PDFVersion implements Filter interface.
-func (filterAESV3 )PDFVersion ()[2]int {return [2]int {2,0}};func init (){_acg ("\u0056\u0032",_ad )};func (filterIdentity )Name ()string {return "\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079"};
+// Name implements Filter interface.
+func (filterV2 )Name ()string {return "\u0056\u0032"};func init (){_gfg ("\u0056\u0032",_cd )};
 
-// NewFilterAESV3 creates an AES-based filter with a 256 bit key (AESV3).
-func NewFilterAESV3 ()Filter {_dce ,_feg :=_ag (FilterDict {});if _feg !=nil {_b .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0033\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_feg );return filterAESV3 {};};return _dce ;};var (_dd =make (map[string ]filterFunc ););type filterAESV2 struct{filterAES };
-
-// FilterDict represents information from a CryptFilter dictionary.
-type FilterDict struct{CFM string ;AuthEvent _ef .AuthEvent ;Length int ;};type filterAES struct{};var _ Filter =filterAESV3 {};var _ Filter =filterAESV2 {};
+// NewFilterAESV2 creates an AES-based filter with a 128 bit key (AESV2).
+func NewFilterAESV2 ()Filter {_cc ,_cb :=_abf (FilterDict {});if _cb !=nil {_ff .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_cb );return filterAESV2 {};};return _cc ;};func (filterIdentity )HandlerVersion ()(V ,R int ){return ;};
 
 // MakeKey implements Filter interface.
-func (filterAESV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ge (objNum ,genNum ,ekey ,true );};
-
-// MakeKey implements Filter interface.
-func (_ed filterV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ge (objNum ,genNum ,ekey ,false );};func (filterIdentity )KeyLength ()int {return 0};func (filterIdentity )MakeKey (objNum ,genNum uint32 ,fkey []byte )([]byte ,error ){return fkey ,nil };
-
-// NewFilterV2 creates a RC4-based filter with a specified key length (in bytes).
-func NewFilterV2 (length int )Filter {_dga ,_bba :=_ad (FilterDict {Length :length });if _bba !=nil {_b .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020R\u0043\u0034\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_bba );return filterV2 {_ggf :length };};return _dga ;};type filterIdentity struct{};
-
-// EncryptBytes implements Filter interface.
-func (filterV2 )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_ebd ,_df :=_c .NewCipher (okey );if _df !=nil {return nil ,_df ;};_b .Log .Trace ("\u0052\u00434\u0020\u0045\u006ec\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_ebd .XORKeyStream (buf ,buf );_b .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};
-
-// NewFilter creates CryptFilter from a corresponding dictionary.
-func NewFilter (d FilterDict )(Filter ,error ){_dea ,_bbg :=_acga (d .CFM );if _bbg !=nil {return nil ,_bbg ;};_daa ,_bbg :=_dea (d );if _bbg !=nil {return nil ,_bbg ;};return _daa ,nil ;};func _ad (_bbe FilterDict )(Filter ,error ){if _bbe .Length %8!=0{return nil ,_e .Errorf ("\u0063\u0072\u0079p\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069\u0070\u006c\u0065\u0020o\u0066\u0020\u0038\u0020\u0028\u0025\u0064\u0029",_bbe .Length );};if _bbe .Length < 5||_bbe .Length > 16{if _bbe .Length ==40||_bbe .Length ==64||_bbe .Length ==128{_b .Log .Debug ("\u0053\u0054\u0041\u004e\u0044AR\u0044\u0020V\u0049\u004f\u004c\u0041\u0054\u0049\u004f\u004e\u003a\u0020\u0043\u0072\u0079\u0070\u0074\u0020\u004c\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072s\u0020\u0074\u006f \u0062\u0065\u0020\u0069\u006e\u0020\u0062\u0069\u0074\u0073\u0020\u0072\u0061t\u0068\u0065\u0072\u0020\u0074h\u0061\u006e\u0020\u0062\u0079\u0074\u0065\u0073\u0020-\u0020\u0061s\u0073u\u006d\u0069\u006e\u0067\u0020\u0062\u0069t\u0073\u0020\u0028\u0025\u0064\u0029",_bbe .Length );_bbe .Length /=8;}else {return nil ,_e .Errorf ("\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074h\u0020\u006e\u006f\u0074\u0020\u0069\u006e \u0072\u0061\u006e\u0067\u0065\u0020\u0034\u0030\u0020\u002d\u00201\u0032\u0038\u0020\u0062\u0069\u0074\u0020\u0028\u0025\u0064\u0029",_bbe .Length );};};return filterV2 {_ggf :_bbe .Length },nil ;};type filterAESV3 struct{filterAES };func (filterIdentity )HandlerVersion ()(V ,R int ){return ;};type filterV2 struct{_ggf int };
-
-// MakeKey implements Filter interface.
-func (filterAESV3 )MakeKey (_ ,_ uint32 ,ekey []byte )([]byte ,error ){return ekey ,nil };func _acga (_gdb string )(filterFunc ,error ){_fg :=_dd [string (_gdb )];if _fg ==nil {return nil ,_e .Errorf ("\u0075\u006e\u0073\u0075p\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0063\u0072\u0079p\u0074 \u0066\u0069\u006c\u0074\u0065\u0072\u003a \u0025\u0071",_gdb );};return _fg ,nil ;};
-
-// KeyLength implements Filter interface.
-func (filterAESV3 )KeyLength ()int {return 256/8};
+func (filterAESV3 )MakeKey (_ ,_ uint32 ,ekey []byte )([]byte ,error ){return ekey ,nil };
 
 // HandlerVersion implements Filter interface.
 func (filterAESV2 )HandlerVersion ()(V ,R int ){V ,R =4,4;return ;};
 
-// NewFilterAESV2 creates an AES-based filter with a 128 bit key (AESV2).
-func NewFilterAESV2 ()Filter {_gg ,_bb :=_eca (FilterDict {});if _bb !=nil {_b .Log .Error ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0063\u006f\u0075l\u0064\u0020\u006e\u006f\u0074\u0020\u0063re\u0061\u0074\u0065\u0020A\u0045\u0053\u0020\u0056\u0032\u0020\u0063\u0072\u0079pt\u0020\u0066i\u006c\u0074\u0065\u0072\u003a\u0020\u0025\u0076",_bb );return filterAESV2 {};};return _gg ;};
+// HandlerVersion implements Filter interface.
+func (filterAESV3 )HandlerVersion ()(V ,R int ){V ,R =5,6;return ;};
 
-// NewIdentity creates an identity filter that bypasses all data without changes.
-func NewIdentity ()Filter {return filterIdentity {}};var _ Filter =filterV2 {};
+// HandlerVersion implements Filter interface.
+func (_gag filterV2 )HandlerVersion ()(V ,R int ){V ,R =2,3;return ;};var _ Filter =filterV2 {};func (filterIdentity )PDFVersion ()[2]int {return [2]int {}};
+
+// PDFVersion implements Filter interface.
+func (filterAESV2 )PDFVersion ()[2]int {return [2]int {1,5}};
+
+// EncryptBytes implements Filter interface.
+func (filterV2 )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_df ,_afg :=_ec .NewCipher (okey );if _afg !=nil {return nil ,_afg ;};_ff .Log .Trace ("\u0052\u00434\u0020\u0045\u006ec\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_df .XORKeyStream (buf ,buf );_ff .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};func (filterIdentity )Name ()string {return "\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079"};var _ Filter =filterAESV3 {};func _cd (_de FilterDict )(Filter ,error ){if _de .Length %8!=0{return nil ,_a .Errorf ("\u0063\u0072\u0079p\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074\u0068\u0020\u006e\u006f\u0074\u0020\u006d\u0075\u006c\u0074\u0069\u0070\u006c\u0065\u0020o\u0066\u0020\u0038\u0020\u0028\u0025\u0064\u0029",_de .Length );};if _de .Length < 5||_de .Length > 16{if _de .Length ==40||_de .Length ==64||_de .Length ==128{_ff .Log .Debug ("\u0053\u0054\u0041\u004e\u0044AR\u0044\u0020V\u0049\u004f\u004c\u0041\u0054\u0049\u004f\u004e\u003a\u0020\u0043\u0072\u0079\u0070\u0074\u0020\u004c\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072s\u0020\u0074\u006f \u0062\u0065\u0020\u0069\u006e\u0020\u0062\u0069\u0074\u0073\u0020\u0072\u0061t\u0068\u0065\u0072\u0020\u0074h\u0061\u006e\u0020\u0062\u0079\u0074\u0065\u0073\u0020-\u0020\u0061s\u0073u\u006d\u0069\u006e\u0067\u0020\u0062\u0069t\u0073\u0020\u0028\u0025\u0064\u0029",_de .Length );_de .Length /=8;}else {return nil ,_a .Errorf ("\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074\u0065\u0072\u0020\u006c\u0065\u006e\u0067\u0074h\u0020\u006e\u006f\u0074\u0020\u0069\u006e \u0072\u0061\u006e\u0067\u0065\u0020\u0034\u0030\u0020\u002d\u00201\u0032\u0038\u0020\u0062\u0069\u0074\u0020\u0028\u0025\u0064\u0029",_de .Length );};};return filterV2 {_ade :_de .Length },nil ;};type filterAESV3 struct{filterAES };func (filterIdentity )KeyLength ()int {return 0};func _ffb (_fea ,_fb uint32 ,_feag []byte ,_gac bool )([]byte ,error ){_dcd :=make ([]byte ,len (_feag )+5);for _cbb :=0;_cbb < len (_feag );_cbb ++{_dcd [_cbb ]=_feag [_cbb ];};for _gd :=0;_gd < 3;_gd ++{_ae :=byte ((_fea >>uint32 (8*_gd ))&0xff);_dcd [_gd +len (_feag )]=_ae ;};for _def :=0;_def < 2;_def ++{_eg :=byte ((_fb >>uint32 (8*_def ))&0xff);_dcd [_def +len (_feag )+3]=_eg ;};if _gac {_dcd =append (_dcd ,0x73);_dcd =append (_dcd ,0x41);_dcd =append (_dcd ,0x6C);_dcd =append (_dcd ,0x54);};_ad :=_fd .New ();_ad .Write (_dcd );_ced :=_ad .Sum (nil );if len (_feag )+5< 16{return _ced [0:len (_feag )+5],nil ;};return _ced ,nil ;};func (filterIdentity )EncryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func (filterIdentity )DecryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func _dg (_ea FilterDict )(Filter ,error ){if _ea .Length ==256{_ff .Log .Debug ("\u0041\u0045S\u0056\u0033\u0020c\u0072\u0079\u0070\u0074\u0020f\u0069\u006c\u0074\u0065\u0072 l\u0065\u006e\u0067\u0074\u0068\u0020\u0061\u0070\u0070\u0065\u0061\u0072\u0073\u0020\u0074\u006f\u0020\u0062e\u0020i\u006e\u0020\u0062\u0069\u0074\u0073 ra\u0074\u0068\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u0062\u0079te\u0073 \u002d\u0020\u0061\u0073s\u0075m\u0069n\u0067\u0020b\u0069\u0074s \u0028\u0025\u0064\u0029",_ea .Length );_ea .Length /=8;};if _ea .Length !=0&&_ea .Length !=32{return nil ,_a .Errorf ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0041\u0045\u0053\u0056\u0033\u0020\u0063\u0072\u0079\u0070\u0074\u0020\u0066\u0069\u006c\u0074e\u0072\u0020\u006c\u0065\u006eg\u0074\u0068 \u0028\u0025\u0064\u0029",_ea .Length );};return filterAESV3 {},nil ;};func _bae (_egd string )(filterFunc ,error ){_cce :=_cba [string (_egd )];if _cce ==nil {return nil ,_a .Errorf ("\u0075\u006e\u0073\u0075p\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0063\u0072\u0079p\u0074 \u0066\u0069\u006c\u0074\u0065\u0072\u003a \u0025\u0071",_egd );};return _cce ,nil ;};
+
+// PDFVersion implements Filter interface.
+func (_aef filterV2 )PDFVersion ()[2]int {return [2]int {}};
+
+// PDFVersion implements Filter interface.
+func (filterAESV3 )PDFVersion ()[2]int {return [2]int {2,0}};
 
 // DecryptBytes implements Filter interface.
-func (filterV2 )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_gde ,_ega :=_c .NewCipher (okey );if _ega !=nil {return nil ,_ega ;};_b .Log .Trace ("\u0052\u00434\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_gde .XORKeyStream (buf ,buf );_b .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};
+func (filterV2 )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_cfa ,_eff :=_ec .NewCipher (okey );if _eff !=nil {return nil ,_eff ;};_ff .Log .Trace ("\u0052\u00434\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_cfa .XORKeyStream (buf ,buf );_ff .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};type filterAES struct{};func (filterIdentity )MakeKey (objNum ,genNum uint32 ,fkey []byte )([]byte ,error ){return fkey ,nil };func _gfg (_bgb string ,_ba filterFunc ){if _ ,_age :=_cba [_bgb ];_age {panic ("\u0061l\u0072e\u0061\u0064\u0079\u0020\u0072e\u0067\u0069s\u0074\u0065\u0072\u0065\u0064");};_cba [_bgb ]=_ba ;};var (_cba =make (map[string ]filterFunc ););
+
+// NewIdentity creates an identity filter that bypasses all data without changes.
+func NewIdentity ()Filter {return filterIdentity {}};

fjson/fjson.go

@@ -10,28 +10,28 @@
 // terms that can be accessed at https://unidoc.io/eula/
 
 // Package fjson provides support for loading PDF form field data from JSON data/files.
-package fjson ;import (_e "encoding/json";_db "github.com/unidoc/unipdf/v3/core";_bb "github.com/unidoc/unipdf/v3/model";_bg "io";_b "os";);
-
-// FieldData represents form field data loaded from JSON file.
-type FieldData struct{_g []fieldValue };
-
-// JSON returns the field data as a string in JSON format.
-func (_dgg FieldData )JSON ()(string ,error ){_fea ,_cgeb :=_e .MarshalIndent (_dgg ._g ,"","\u0020\u0020\u0020\u0020");return string (_fea ),_cgeb ;};
-
-// LoadFromPDF loads form field data from a PDF.
-func LoadFromPDF (rs _bg .ReadSeeker )(*FieldData ,error ){_ec ,_ga :=_bb .NewPdfReader (rs );if _ga !=nil {return nil ,_ga ;};if _ec .AcroForm ==nil {return nil ,nil ;};var _ggf []fieldValue ;_bga :=_ec .AcroForm .AllFields ();for _ ,_be :=range _bga {var _ca []string ;_eb :=make (map[string ]struct{});_gd ,_f :=_be .FullName ();if _f !=nil {return nil ,_f ;};if _eg ,_ce :=_be .V .(*_db .PdfObjectString );_ce {_ggf =append (_ggf ,fieldValue {Name :_gd ,Value :_eg .Decoded ()});continue ;};var _ea string ;for _ ,_daf :=range _be .Annotations {_gga ,_ee :=_db .GetName (_daf .AS );if _ee {_ea =_gga .String ();};_fe ,_gaa :=_db .GetDict (_daf .AP );if !_gaa {continue ;};_ef ,_ :=_db .GetDict (_fe .Get ("\u004e"));for _ ,_af :=range _ef .Keys (){_baa :=_af .String ();if _ ,_cg :=_eb [_baa ];!_cg {_ca =append (_ca ,_baa );_eb [_baa ]=struct{}{};};};_ceb ,_ :=_db .GetDict (_fe .Get ("\u0044"));for _ ,_eae :=range _ceb .Keys (){_bae :=_eae .String ();if _ ,_dg :=_eb [_bae ];!_dg {_ca =append (_ca ,_bae );_eb [_bae ]=struct{}{};};};};_cge :=fieldValue {Name :_gd ,Value :_ea ,Options :_ca };_ggf =append (_ggf ,_cge );};_dd :=FieldData {_g :_ggf };return &_dd ,nil ;};
-
-// LoadFromJSON loads JSON form data from `r`.
-func LoadFromJSON (r _bg .Reader )(*FieldData ,error ){var _ba FieldData ;_gg :=_e .NewDecoder (r ).Decode (&_ba ._g );if _gg !=nil {return nil ,_gg ;};return &_ba ,nil ;};
-
-// LoadFromPDFFile loads form field data from a PDF file.
-func LoadFromPDFFile (filePath string )(*FieldData ,error ){_fdc ,_afc :=_b .Open (filePath );if _afc !=nil {return nil ,_afc ;};defer _fdc .Close ();return LoadFromPDF (_fdc );};
-
-// FieldValues implements model.FieldValueProvider interface.
-func (_de *FieldData )FieldValues ()(map[string ]_db .PdfObject ,error ){_fb :=make (map[string ]_db .PdfObject );for _ ,_cc :=range _de ._g {if len (_cc .Value )> 0{_fb [_cc .Name ]=_db .MakeString (_cc .Value );};};return _fb ,nil ;};
-
-// LoadFromJSONFile loads form field data from a JSON file.
-func LoadFromJSONFile (filePath string )(*FieldData ,error ){_c ,_ge :=_b .Open (filePath );if _ge !=nil {return nil ,_ge ;};defer _c .Close ();return LoadFromJSON (_c );};type fieldValue struct{Name string `json:"name"`;Value string `json:"value"`;
+package fjson ;import (_g "encoding/json";_e "github.com/unidoc/unipdf/v3/core";_ea "github.com/unidoc/unipdf/v3/model";_fd "io";_f "os";);type fieldValue struct{Name string `json:"name"`;Value string `json:"value"`;
 
 // Options lists allowed values if present.
-Options []string `json:"options,omitempty"`;};
+Options []string `json:"options,omitempty"`;};
+
+// LoadFromPDF loads form field data from a PDF.
+func LoadFromPDF (rs _fd .ReadSeeker )(*FieldData ,error ){_c ,_cc :=_ea .NewPdfReader (rs );if _cc !=nil {return nil ,_cc ;};if _c .AcroForm ==nil {return nil ,nil ;};var _fda []fieldValue ;_gb :=_c .AcroForm .AllFields ();for _ ,_bd :=range _gb {var _ab []string ;_gae :=make (map[string ]struct{});_db ,_cg :=_bd .FullName ();if _cg !=nil {return nil ,_cg ;};if _bg ,_fg :=_bd .V .(*_e .PdfObjectString );_fg {_fda =append (_fda ,fieldValue {Name :_db ,Value :_bg .Decoded ()});continue ;};var _bb string ;for _ ,_ead :=range _bd .Annotations {_ad ,_dc :=_e .GetName (_ead .AS );if _dc {_bb =_ad .String ();};_cd ,_ee :=_e .GetDict (_ead .AP );if !_ee {continue ;};_ca ,_ :=_e .GetDict (_cd .Get ("\u004e"));for _ ,_ef :=range _ca .Keys (){_efg :=_ef .String ();if _ ,_dbg :=_gae [_efg ];!_dbg {_ab =append (_ab ,_efg );_gae [_efg ]=struct{}{};};};_ae ,_ :=_e .GetDict (_cd .Get ("\u0044"));for _ ,_efb :=range _ae .Keys (){_ba :=_efb .String ();if _ ,_bf :=_gae [_ba ];!_bf {_ab =append (_ab ,_ba );_gae [_ba ]=struct{}{};};};};_ge :=fieldValue {Name :_db ,Value :_bb ,Options :_ab };_fda =append (_fda ,_ge );};_eaf :=FieldData {_fb :_fda };return &_eaf ,nil ;};
+
+// LoadFromJSONFile loads form field data from a JSON file.
+func LoadFromJSONFile (filePath string )(*FieldData ,error ){_a ,_ga :=_f .Open (filePath );if _ga !=nil {return nil ,_ga ;};defer _a .Close ();return LoadFromJSON (_a );};
+
+// FieldValues implements model.FieldValueProvider interface.
+func (_bfd *FieldData )FieldValues ()(map[string ]_e .PdfObject ,error ){_gc :=make (map[string ]_e .PdfObject );for _ ,_af :=range _bfd ._fb {if len (_af .Value )> 0{_gc [_af .Name ]=_e .MakeString (_af .Value );};};return _gc ,nil ;};
+
+// JSON returns the field data as a string in JSON format.
+func (_bddc FieldData )JSON ()(string ,error ){_geb ,_bfe :=_g .MarshalIndent (_bddc ._fb ,"","\u0020\u0020\u0020\u0020");return string (_geb ),_bfe ;};
+
+// LoadFromJSON loads JSON form data from `r`.
+func LoadFromJSON (r _fd .Reader )(*FieldData ,error ){var _d FieldData ;_eg :=_g .NewDecoder (r ).Decode (&_d ._fb );if _eg !=nil {return nil ,_eg ;};return &_d ,nil ;};
+
+// LoadFromPDFFile loads form field data from a PDF file.
+func LoadFromPDFFile (filePath string )(*FieldData ,error ){_fc ,_bfb :=_f .Open (filePath );if _bfb !=nil {return nil ,_bfb ;};defer _fc .Close ();return LoadFromPDF (_fc );};
+
+// FieldData represents form field data loaded from JSON file.
+type FieldData struct{_fb []fieldValue };

internal/endian/endian.go

@@ -9,4 +9,4 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package endian ;import (_a "encoding/binary";_g "unsafe";);func IsLittle ()bool {return !_gc };func init (){const _e =int (_g .Sizeof (0));_c :=1;_d :=(*[_e ]byte )(_g .Pointer (&_c ));if _d [0]==0{_gc =true ;ByteOrder =_a .BigEndian ;}else {ByteOrder =_a .LittleEndian ;};};var (ByteOrder _a .ByteOrder ;_gc bool ;);func IsBig ()bool {return _gc };
+package endian ;import (_a "encoding/binary";_da "unsafe";);var (ByteOrder _a .ByteOrder ;_e bool ;);func init (){const _b =int (_da .Sizeof (0));_dg :=1;_bd :=(*[_b ]byte )(_da .Pointer (&_dg ));if _bd [0]==0{_e =true ;ByteOrder =_a .BigEndian ;}else {ByteOrder =_a .LittleEndian ;};};func IsLittle ()bool {return !_e };func IsBig ()bool {return _e };

internal/jbig2/basic/basic.go

@@ -9,4 +9,4 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package basic ;import _f "github.com/unidoc/unipdf/v3/internal/jbig2/errors";func Sign (v float32 )float32 {if v >=0.0{return 1.0;};return -1.0;};type NumSlice []float32 ;func Ceil (numerator ,denominator int )int {if numerator %denominator ==0{return numerator /denominator ;};return (numerator /denominator )+1;};func (_a IntsMap )Add (key uint64 ,value int ){_a [key ]=append (_a [key ],value )};func (_ag IntSlice )Size ()int {return len (_ag )};func (_cf *IntSlice )Add (v int )error {if _cf ==nil {return _f .Error ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0041\u0064\u0064","\u0073\u006c\u0069\u0063\u0065\u0020\u006e\u006f\u0074\u0020\u0064\u0065f\u0069\u006e\u0065\u0064");};*_cf =append (*_cf ,v );return nil ;};func (_ba *Stack )peek ()(interface{},bool ){_gab :=_ba .top ();if _gab ==-1{return nil ,false ;};return _ba .Data [_gab ],true ;};func (_gf *NumSlice )Add (v float32 ){*_gf =append (*_gf ,v )};func (_eb NumSlice )GetInt (i int )(int ,error ){const _gg ="\u0047\u0065\u0074\u0049\u006e\u0074";if i < 0||i > len (_eb )-1{return 0,_f .Errorf (_gg ,"\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};_db :=_eb [i ];return int (_db +Sign (_db )*0.5),nil ;};func Min (x ,y int )int {if x < y {return x ;};return y ;};type Stack struct{Data []interface{};Aux *Stack ;};type IntsMap map[uint64 ][]int ;func (_dd IntSlice )Get (index int )(int ,error ){if index > len (_dd )-1{return 0,_f .Errorf ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069\u006e\u0064\u0065x:\u0020\u0025\u0064\u0020\u006f\u0075\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006eg\u0065",index );};return _dd [index ],nil ;};func NewIntSlice (i int )*IntSlice {_c :=IntSlice (make ([]int ,i ));return &_c };func (_fd *Stack )top ()int {return len (_fd .Data )-1};func (_bb NumSlice )Get (i int )(float32 ,error ){if i < 0||i > len (_bb )-1{return 0,_f .Errorf ("\u004e\u0075\u006dS\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};return _bb [i ],nil ;};func (_be *Stack )Pop ()(_gcf interface{},_bbb bool ){_gcf ,_bbb =_be .peek ();if !_bbb {return nil ,_bbb ;};_be .Data =_be .Data [:_be .top ()];return _gcf ,true ;};func (_gc *Stack )Len ()int {return len (_gc .Data )};func (_afg *Stack )Push (v interface{}){_afg .Data =append (_afg .Data ,v )};func (_af *IntSlice )Copy ()*IntSlice {_dc :=IntSlice (make ([]int ,len (*_af )));copy (_dc ,*_af );return &_dc ;};func (_ecc *Stack )Peek ()(_ed interface{},_gb bool ){return _ecc .peek ()};func NewNumSlice (i int )*NumSlice {_ga :=NumSlice (make ([]float32 ,i ));return &_ga };type IntSlice []int ;func (_ff IntsMap )Delete (key uint64 ){delete (_ff ,key )};func (_ec NumSlice )GetIntSlice ()[]int {_cd :=make ([]int ,len (_ec ));for _de ,_bbg :=range _ec {_cd [_de ]=int (_bbg );};return _cd ;};func Abs (v int )int {if v > 0{return v ;};return -v ;};func (_ad IntsMap )GetSlice (key uint64 )([]int ,bool ){_d ,_aa :=_ad [key ];if !_aa {return nil ,false ;};return _d ,true ;};func (_fg IntsMap )Get (key uint64 )(int ,bool ){_e ,_b :=_fg [key ];if !_b {return 0,false ;};if len (_e )==0{return 0,false ;};return _e [0],true ;};func Max (x ,y int )int {if x > y {return x ;};return y ;};func (_ee *NumSlice )AddInt (v int ){*_ee =append (*_ee ,float32 (v ))};
+package basic ;import _g "github.com/unidoc/unipdf/v3/internal/jbig2/errors";func (_d IntsMap )Add (key uint64 ,value int ){_d [key ]=append (_d [key ],value )};func (_gf *NumSlice )Add (v float32 ){*_gf =append (*_gf ,v )};func (_ca IntsMap )GetSlice (key uint64 )([]int ,bool ){_gb ,_e :=_ca [key ];if !_e {return nil ,false ;};return _gb ,true ;};func NewIntSlice (i int )*IntSlice {_dc :=IntSlice (make ([]int ,i ));return &_dc };func (_fd IntsMap )Delete (key uint64 ){delete (_fd ,key )};func (_a *IntSlice )Add (v int )error {if _a ==nil {return _g .Error ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0041\u0064\u0064","\u0073\u006c\u0069\u0063\u0065\u0020\u006e\u006f\u0074\u0020\u0064\u0065f\u0069\u006e\u0065\u0064");};*_a =append (*_a ,v );return nil ;};type IntsMap map[uint64 ][]int ;func NewNumSlice (i int )*NumSlice {_ef :=NumSlice (make ([]float32 ,i ));return &_ef };func (_cb *Stack )Len ()int {return len (_cb .Data )};func (_fde NumSlice )Get (i int )(float32 ,error ){if i < 0||i > len (_fde )-1{return 0,_g .Errorf ("\u004e\u0075\u006dS\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};return _fde [i ],nil ;};func Ceil (numerator ,denominator int )int {if numerator %denominator ==0{return numerator /denominator ;};return (numerator /denominator )+1;};type NumSlice []float32 ;func (_ad *Stack )Peek ()(_gde interface{},_ee bool ){return _ad .peek ()};func (_ce IntSlice )Size ()int {return len (_ce )};func (_efb *Stack )top ()int {return len (_efb .Data )-1};type IntSlice []int ;func (_aa *IntSlice )Copy ()*IntSlice {_ab :=IntSlice (make ([]int ,len (*_aa )));copy (_ab ,*_aa );return &_ab ;};func Sign (v float32 )float32 {if v >=0.0{return 1.0;};return -1.0;};func Max (x ,y int )int {if x > y {return x ;};return y ;};func (_dg IntsMap )Get (key uint64 )(int ,bool ){_de ,_f :=_dg [key ];if !_f {return 0,false ;};if len (_de )==0{return 0,false ;};return _de [0],true ;};func (_dd IntSlice )Get (index int )(int ,error ){if index > len (_dd )-1{return 0,_g .Errorf ("\u0049\u006e\u0074S\u006c\u0069\u0063\u0065\u002e\u0047\u0065\u0074","\u0069\u006e\u0064\u0065x:\u0020\u0025\u0064\u0020\u006f\u0075\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006eg\u0065",index );};return _dd [index ],nil ;};func (_gcb *Stack )Push (v interface{}){_gcb .Data =append (_gcb .Data ,v )};func Abs (v int )int {if v > 0{return v ;};return -v ;};func (_efa *NumSlice )AddInt (v int ){*_efa =append (*_efa ,float32 (v ))};type Stack struct{Data []interface{};Aux *Stack ;};func Min (x ,y int )int {if x < y {return x ;};return y ;};func (_ae NumSlice )GetIntSlice ()[]int {_cc :=make ([]int ,len (_ae ));for _ge ,_gc :=range _ae {_cc [_ge ]=int (_gc );};return _cc ;};func (_gbf *Stack )Pop ()(_gcg interface{},_dge bool ){_gcg ,_dge =_gbf .peek ();if !_dge {return nil ,_dge ;};_gbf .Data =_gbf .Data [:_gbf .top ()];return _gcg ,true ;};func (_dcd NumSlice )GetInt (i int )(int ,error ){const _gd ="\u0047\u0065\u0074\u0049\u006e\u0074";if i < 0||i > len (_dcd )-1{return 0,_g .Errorf (_gd ,"\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};_fg :=_dcd [i ];return int (_fg +Sign (_fg )*0.5),nil ;};func (_fe *Stack )peek ()(interface{},bool ){_dda :=_fe .top ();if _dda ==-1{return nil ,false ;};return _fe .Data [_dda ],true ;};

internal/jbig2/decoder/decoder.go

@@ -9,4 +9,4 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package decoder ;import (_b "github.com/unidoc/unipdf/v3/internal/bitwise";_f "github.com/unidoc/unipdf/v3/internal/jbig2/bitmap";_e "github.com/unidoc/unipdf/v3/internal/jbig2/document";_af "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_a "image";);func (_d *Decoder )DecodePageImage (pageNumber int )(_a .Image ,error ){const _cb ="\u0064\u0065\u0063od\u0065\u0072\u002e\u0044\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";_eg ,_fd :=_d .decodePageImage (pageNumber );if _fd !=nil {return nil ,_af .Wrap (_fd ,_cb ,"");};return _eg ,nil ;};func (_bc *Decoder )decodePageImage (_cdb int )(_a .Image ,error ){const _ec ="\u0064e\u0063o\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";if _cdb < 0{return nil ,_af .Errorf (_ec ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_cdb );};if _cdb > int (_bc ._bg .NumberOfPages ){return nil ,_af .Errorf (_ec ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_cdb );};_agd ,_be :=_bc ._bg .GetPage (_cdb );if _be !=nil {return nil ,_af .Wrap (_be ,_ec ,"");};_fab ,_be :=_agd .GetBitmap ();if _be !=nil {return nil ,_af .Wrap (_be ,_ec ,"");};return _fab .ToImage (),nil ;};type Decoder struct{_c _b .StreamReader ;_bg *_e .Document ;_ag int ;_fe Parameters ;};type Parameters struct{UnpaddedData bool ;Color _f .Color ;};func (_cd *Decoder )PageNumber ()(int ,error ){const _ba ="\u0044e\u0063o\u0064\u0065\u0072\u002e\u0050a\u0067\u0065N\u0075\u006d\u0062\u0065\u0072";if _cd ._bg ==nil {return 0,_af .Error (_ba ,"d\u0065\u0063\u006f\u0064\u0065\u0072 \u006e\u006f\u0074\u0020\u0069\u006e\u0069\u0074\u0069a\u006c\u0069\u007ae\u0064 \u0079\u0065\u0074");};return int (_cd ._bg .NumberOfPages ),nil ;};func (_ce *Decoder )decodePage (_fa int )([]byte ,error ){const _cc ="\u0064\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065";if _fa < 0{return nil ,_af .Errorf (_cc ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_fa );};if _fa > int (_ce ._bg .NumberOfPages ){return nil ,_af .Errorf (_cc ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_fa );};_gb ,_cbe :=_ce ._bg .GetPage (_fa );if _cbe !=nil {return nil ,_af .Wrap (_cbe ,_cc ,"");};_ff ,_cbe :=_gb .GetBitmap ();if _cbe !=nil {return nil ,_af .Wrap (_cbe ,_cc ,"");};_ff .InverseData ();if !_ce ._fe .UnpaddedData {return _ff .Data ,nil ;};return _ff .GetUnpaddedData ();};func (_egf *Decoder )DecodeNextPage ()([]byte ,error ){_egf ._ag ++;_fb :=_egf ._ag ;return _egf .decodePage (_fb );};func Decode (input []byte ,parameters Parameters ,globals *_e .Globals )(*Decoder ,error ){_afg :=_b .NewReader (input );_bf ,_feb :=_e .DecodeDocument (_afg ,globals );if _feb !=nil {return nil ,_feb ;};return &Decoder {_c :_afg ,_bg :_bf ,_fe :parameters },nil ;};func (_eb *Decoder )DecodePage (pageNumber int )([]byte ,error ){return _eb .decodePage (pageNumber )};
+package decoder ;import (_a "github.com/unidoc/unipdf/v3/internal/bitwise";_ac "github.com/unidoc/unipdf/v3/internal/jbig2/bitmap";_f "github.com/unidoc/unipdf/v3/internal/jbig2/document";_c "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_g "image";);func (_bd *Decoder )DecodePageImage (pageNumber int )(_g .Image ,error ){const _de ="\u0064\u0065\u0063od\u0065\u0072\u002e\u0044\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";_bf ,_fg :=_bd .decodePageImage (pageNumber );if _fg !=nil {return nil ,_c .Wrap (_fg ,_de ,"");};return _bf ,nil ;};type Decoder struct{_b _a .StreamReader ;_gb *_f .Document ;_e int ;_ag Parameters ;};func (_aa *Decoder )DecodeNextPage ()([]byte ,error ){_aa ._e ++;_fb :=_aa ._e ;return _aa .decodePage (_fb );};type Parameters struct{UnpaddedData bool ;Color _ac .Color ;};func (_eg *Decoder )DecodePage (pageNumber int )([]byte ,error ){return _eg .decodePage (pageNumber )};func (_af *Decoder )decodePageImage (_abf int )(_g .Image ,error ){const _egb ="\u0064e\u0063o\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";if _abf < 0{return nil ,_c .Errorf (_egb ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_abf );};if _abf > int (_af ._gb .NumberOfPages ){return nil ,_c .Errorf (_egb ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_abf );};_ce ,_dg :=_af ._gb .GetPage (_abf );if _dg !=nil {return nil ,_c .Wrap (_dg ,_egb ,"");};_gbe ,_dg :=_ce .GetBitmap ();if _dg !=nil {return nil ,_c .Wrap (_dg ,_egb ,"");};return _gbe .ToImage (),nil ;};func (_bb *Decoder )decodePage (_bc int )([]byte ,error ){const _ec ="\u0064\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065";if _bc < 0{return nil ,_c .Errorf (_ec ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_bc );};if _bc > int (_bb ._gb .NumberOfPages ){return nil ,_c .Errorf (_ec ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_bc );};_bbg ,_fgc :=_bb ._gb .GetPage (_bc );if _fgc !=nil {return nil ,_c .Wrap (_fgc ,_ec ,"");};_abc ,_fgc :=_bbg .GetBitmap ();if _fgc !=nil {return nil ,_c .Wrap (_fgc ,_ec ,"");};_abc .InverseData ();if !_bb ._ag .UnpaddedData {return _abc .Data ,nil ;};return _abc .GetUnpaddedData ();};func Decode (input []byte ,parameters Parameters ,globals *_f .Globals )(*Decoder ,error ){_gd :=_a .NewReader (input );_ge ,_fe :=_f .DecodeDocument (_gd ,globals );if _fe !=nil {return nil ,_fe ;};return &Decoder {_b :_gd ,_gb :_ge ,_ag :parameters },nil ;};func (_ab *Decoder )PageNumber ()(int ,error ){const _fd ="\u0044e\u0063o\u0064\u0065\u0072\u002e\u0050a\u0067\u0065N\u0075\u006d\u0062\u0065\u0072";if _ab ._gb ==nil {return 0,_c .Error (_fd ,"d\u0065\u0063\u006f\u0064\u0065\u0072 \u006e\u006f\u0074\u0020\u0069\u006e\u0069\u0074\u0069a\u006c\u0069\u007ae\u0064 \u0079\u0065\u0074");};return int (_ab ._gb .NumberOfPages ),nil ;};

internal/jbig2/errors/errors.go

@@ -9,4 +9,4 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package errors ;import _c "fmt";func Errorf (processName ,message string ,arguments ...interface{})error {return _a (_c .Sprintf (message ,arguments ...),processName );};func Wrapf (err error ,processName ,message string ,arguments ...interface{})error {if _ea ,_eag :=err .(*processError );_eag {_ea ._b ="";};_fg :=_a (_c .Sprintf (message ,arguments ...),processName );_fg ._f =err ;return _fg ;};type processError struct{_b string ;_d string ;_cb string ;_f error ;};func Wrap (err error ,processName ,message string )error {if _ce ,_ba :=err .(*processError );_ba {_ce ._b ="";};_be :=_a (message ,processName );_be ._f =err ;return _be ;};func Error (processName ,message string )error {return _a (message ,processName )};func _a (_bg ,_eg string )*processError {return &processError {_b :"\u005b\u0055\u006e\u0069\u0050\u0044\u0046\u005d",_cb :_bg ,_d :_eg };};func (_fd *processError )Error ()string {var _bd string ;if _fd ._b !=""{_bd =_fd ._b ;};_bd +="\u0050r\u006f\u0063\u0065\u0073\u0073\u003a "+_fd ._d ;if _fd ._cb !=""{_bd +="\u0020\u004d\u0065\u0073\u0073\u0061\u0067\u0065\u003a\u0020"+_fd ._cb ;};if _fd ._f !=nil {_bd +="\u002e\u0020"+_fd ._f .Error ();};return _bd ;};
+package errors ;import _a "fmt";func Error (processName ,message string )error {return _cc (message ,processName )};func Wrapf (err error ,processName ,message string ,arguments ...interface{})error {if _cg ,_eb :=err .(*processError );_eb {_cg ._af ="";};_d :=_cc (_a .Sprintf (message ,arguments ...),processName );_d ._b =err ;return _d ;};type processError struct{_af string ;_c string ;_e string ;_b error ;};func Wrap (err error ,processName ,message string )error {if _ea ,_ef :=err .(*processError );_ef {_ea ._af ="";};_afc :=_cc (message ,processName );_afc ._b =err ;return _afc ;};func (_ae *processError )Error ()string {var _g string ;if _ae ._af !=""{_g =_ae ._af ;};_g +="\u0050r\u006f\u0063\u0065\u0073\u0073\u003a "+_ae ._c ;if _ae ._e !=""{_g +="\u0020\u004d\u0065\u0073\u0073\u0061\u0067\u0065\u003a\u0020"+_ae ._e ;};if _ae ._b !=nil {_g +="\u002e\u0020"+_ae ._b .Error ();};return _g ;};func Errorf (processName ,message string ,arguments ...interface{})error {return _cc (_a .Sprintf (message ,arguments ...),processName );};func _cc (_ff ,_cd string )*processError {return &processError {_af :"\u005b\u0055\u006e\u0069\u0050\u0044\u0046\u005d",_e :_ff ,_c :_cd };};

internal/jbig2/jbig2.go

@@ -9,4 +9,4 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package jbig2 ;import (_d "github.com/unidoc/unipdf/v3/internal/bitwise";_g "github.com/unidoc/unipdf/v3/internal/jbig2/decoder";_c "github.com/unidoc/unipdf/v3/internal/jbig2/document";_f "github.com/unidoc/unipdf/v3/internal/jbig2/document/segments";_ec "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_e "sort";);type Globals map[int ]*_f .Header ;func DecodeGlobals (encoded []byte )(Globals ,error ){const _ee ="\u0044\u0065\u0063\u006f\u0064\u0065\u0047\u006c\u006f\u0062\u0061\u006c\u0073";_cc :=_d .NewReader (encoded );_ga ,_eed :=_c .DecodeDocument (_cc ,nil );if _eed !=nil {return nil ,_ec .Wrap (_eed ,_ee ,"");};if _ga .GlobalSegments ==nil ||(_ga .GlobalSegments .Segments ==nil ){return nil ,_ec .Error (_ee ,"\u006eo\u0020\u0067\u006c\u006f\u0062\u0061\u006c\u0020\u0073\u0065\u0067m\u0065\u006e\u0074\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};_fc :=Globals {};for _ ,_eeb :=range _ga .GlobalSegments .Segments {_fc [int (_eeb .SegmentNumber )]=_eeb ;};return _fc ,nil ;};func (_cg Globals )ToDocumentGlobals ()*_c .Globals {if _cg ==nil {return nil ;};_ed :=[]*_f .Header {};for _ ,_fae :=range _cg {_ed =append (_ed ,_fae );};_e .Slice (_ed ,func (_gd ,_gab int )bool {return _ed [_gd ].SegmentNumber < _ed [_gab ].SegmentNumber });return &_c .Globals {Segments :_ed };};func DecodeBytes (encoded []byte ,parameters _g .Parameters ,globals ...Globals )([]byte ,error ){var _fe Globals ;if len (globals )> 0{_fe =globals [0];};_be ,_fec :=_g .Decode (encoded ,parameters ,_fe .ToDocumentGlobals ());if _fec !=nil {return nil ,_fec ;};return _be .DecodeNextPage ();};
+package jbig2 ;import (_c "github.com/unidoc/unipdf/v3/internal/bitwise";_g "github.com/unidoc/unipdf/v3/internal/jbig2/decoder";_f "github.com/unidoc/unipdf/v3/internal/jbig2/document";_d "github.com/unidoc/unipdf/v3/internal/jbig2/document/segments";_ca "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_ac "sort";);func DecodeBytes (encoded []byte ,parameters _g .Parameters ,globals ...Globals )([]byte ,error ){var _b Globals ;if len (globals )> 0{_b =globals [0];};_cad ,_bb :=_g .Decode (encoded ,parameters ,_b .ToDocumentGlobals ());if _bb !=nil {return nil ,_bb ;};return _cad .DecodeNextPage ();};type Globals map[int ]*_d .Header ;func (_gdc Globals )ToDocumentGlobals ()*_f .Globals {if _gdc ==nil {return nil ;};_cf :=[]*_d .Header {};for _ ,_gb :=range _gdc {_cf =append (_cf ,_gb );};_ac .Slice (_cf ,func (_cg ,_bbb int )bool {return _cf [_cg ].SegmentNumber < _cf [_bbb ].SegmentNumber });return &_f .Globals {Segments :_cf };};func DecodeGlobals (encoded []byte )(Globals ,error ){const _fa ="\u0044\u0065\u0063\u006f\u0064\u0065\u0047\u006c\u006f\u0062\u0061\u006c\u0073";_af :=_c .NewReader (encoded );_gg ,_gd :=_f .DecodeDocument (_af ,nil );if _gd !=nil {return nil ,_ca .Wrap (_gd ,_fa ,"");};if _gg .GlobalSegments ==nil ||(_gg .GlobalSegments .Segments ==nil ){return nil ,_ca .Error (_fa ,"\u006eo\u0020\u0067\u006c\u006f\u0062\u0061\u006c\u0020\u0073\u0065\u0067m\u0065\u006e\u0074\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};_ad :=Globals {};for _ ,_bc :=range _gg .GlobalSegments .Segments {_ad [int (_bc .SegmentNumber )]=_bc ;};return _ad ,nil ;};

internal/sampling/sampling.go

@@ -9,4 +9,4 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package sampling ;import (_c "github.com/unidoc/unipdf/v3/internal/bitwise";_g "github.com/unidoc/unipdf/v3/internal/imageutil";_b "io";);func ResampleUint32 (data []uint32 ,bitsPerInputSample int ,bitsPerOutputSample int )[]uint32 {var _cd []uint32 ;_be :=bitsPerOutputSample ;var _cda uint32 ;var _dfb uint32 ;_ff :=0;_cb :=0;_bc :=0;for _bc < len (data ){if _ff > 0{_eg :=_ff ;if _be < _eg {_eg =_be ;};_cda =(_cda <<uint (_eg ))|uint32 (_dfb >>uint (bitsPerInputSample -_eg ));_ff -=_eg ;if _ff > 0{_dfb =_dfb <<uint (_eg );}else {_dfb =0;};_be -=_eg ;if _be ==0{_cd =append (_cd ,_cda );_be =bitsPerOutputSample ;_cda =0;_cb ++;};}else {_ag :=data [_bc ];_bc ++;_dge :=bitsPerInputSample ;if _be < _dge {_dge =_be ;};_ff =bitsPerInputSample -_dge ;_cda =(_cda <<uint (_dge ))|uint32 (_ag >>uint (_ff ));if _dge < bitsPerInputSample {_dfb =_ag <<uint (_dge );};_be -=_dge ;if _be ==0{_cd =append (_cd ,_cda );_be =bitsPerOutputSample ;_cda =0;_cb ++;};};};for _ff >=bitsPerOutputSample {_fb :=_ff ;if _be < _fb {_fb =_be ;};_cda =(_cda <<uint (_fb ))|uint32 (_dfb >>uint (bitsPerInputSample -_fb ));_ff -=_fb ;if _ff > 0{_dfb =_dfb <<uint (_fb );}else {_dfb =0;};_be -=_fb ;if _be ==0{_cd =append (_cd ,_cda );_be =bitsPerOutputSample ;_cda =0;_cb ++;};};if _be > 0&&_be < bitsPerOutputSample {_cda <<=uint (_be );_cd =append (_cd ,_cda );};return _cd ;};func NewReader (img _g .ImageBase )*Reader {return &Reader {_cc :_c .NewReader (img .Data ),_d :img ,_ee :img .ColorComponents ,_bb :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};type Writer struct{_bed _g .ImageBase ;_af *_c .Writer ;_bedc ,_ec int ;_bf bool ;};func (_fg *Reader )ReadSamples (samples []uint32 )(_a error ){for _cf :=0;_cf < len (samples );_cf ++{samples [_cf ],_a =_fg .ReadSample ();if _a !=nil {return _a ;};};return nil ;};func (_gb *Reader )ReadSample ()(uint32 ,error ){if _gb ._fd ==_gb ._d .Height {return 0,_b .EOF ;};_ef ,_dg :=_gb ._cc .ReadBits (byte (_gb ._d .BitsPerComponent ));if _dg !=nil {return 0,_dg ;};_gb ._ee --;if _gb ._ee ==0{_gb ._ee =_gb ._d .ColorComponents ;_gb ._gc ++;};if _gb ._gc ==_gb ._d .Width {if _gb ._bb {_gb ._cc .ConsumeRemainingBits ();};_gb ._gc =0;_gb ._fd ++;};return uint32 (_ef ),nil ;};type Reader struct{_d _g .ImageBase ;_cc *_c .Reader ;_gc ,_fd ,_ee int ;_bb bool ;};type SampleWriter interface{WriteSample (_cee uint32 )error ;WriteSamples (_cdf []uint32 )error ;};func (_dfg *Writer )WriteSample (sample uint32 )error {if _ ,_dee :=_dfg ._af .WriteBits (uint64 (sample ),_dfg ._bed .BitsPerComponent );_dee !=nil {return _dee ;};_dfg ._ec --;if _dfg ._ec ==0{_dfg ._ec =_dfg ._bed .ColorComponents ;_dfg ._bedc ++;};if _dfg ._bedc ==_dfg ._bed .Width {if _dfg ._bf {_dfg ._af .FinishByte ();};_dfg ._bedc =0;};return nil ;};type SampleReader interface{ReadSample ()(uint32 ,error );ReadSamples (_f []uint32 )error ;};func (_dfd *Writer )WriteSamples (samples []uint32 )error {for _gbfb :=0;_gbfb < len (samples );_gbfb ++{if _bd :=_dfd .WriteSample (samples [_gbfb ]);_bd !=nil {return _bd ;};};return nil ;};func ResampleBytes (data []byte ,bitsPerSample int )[]uint32 {var _ab []uint32 ;_de :=bitsPerSample ;var _ed uint32 ;var _gbf byte ;_df :=0;_fc :=0;_da :=0;for _da < len (data ){if _df > 0{_gcg :=_df ;if _de < _gcg {_gcg =_de ;};_ed =(_ed <<uint (_gcg ))|uint32 (_gbf >>uint (8-_gcg ));_df -=_gcg ;if _df > 0{_gbf =_gbf <<uint (_gcg );}else {_gbf =0;};_de -=_gcg ;if _de ==0{_ab =append (_ab ,_ed );_de =bitsPerSample ;_ed =0;_fc ++;};}else {_ce :=data [_da ];_da ++;_ea :=8;if _de < _ea {_ea =_de ;};_df =8-_ea ;_ed =(_ed <<uint (_ea ))|uint32 (_ce >>uint (_df ));if _ea < 8{_gbf =_ce <<uint (_ea );};_de -=_ea ;if _de ==0{_ab =append (_ab ,_ed );_de =bitsPerSample ;_ed =0;_fc ++;};};};for _df >=bitsPerSample {_eag :=_df ;if _de < _eag {_eag =_de ;};_ed =(_ed <<uint (_eag ))|uint32 (_gbf >>uint (8-_eag ));_df -=_eag ;if _df > 0{_gbf =_gbf <<uint (_eag );}else {_gbf =0;};_de -=_eag ;if _de ==0{_ab =append (_ab ,_ed );_de =bitsPerSample ;_ed =0;_fc ++;};};return _ab ;};func NewWriter (img _g .ImageBase )*Writer {return &Writer {_af :_c .NewWriterMSB (img .Data ),_bed :img ,_ec :img .ColorComponents ,_bf :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};
+package sampling ;import (_a "github.com/unidoc/unipdf/v3/internal/bitwise";_g "github.com/unidoc/unipdf/v3/internal/imageutil";_e "io";);func (_eg *Reader )ReadSamples (samples []uint32 )(_fd error ){for _c :=0;_c < len (samples );_c ++{samples [_c ],_fd =_eg .ReadSample ();if _fd !=nil {return _fd ;};};return nil ;};func ResampleBytes (data []byte ,bitsPerSample int )[]uint32 {var _ff []uint32 ;_ab :=bitsPerSample ;var _ef uint32 ;var _ggd byte ;_bd :=0;_bf :=0;_ed :=0;for _ed < len (data ){if _bd > 0{_aff :=_bd ;if _ab < _aff {_aff =_ab ;};_ef =(_ef <<uint (_aff ))|uint32 (_ggd >>uint (8-_aff ));_bd -=_aff ;if _bd > 0{_ggd =_ggd <<uint (_aff );}else {_ggd =0;};_ab -=_aff ;if _ab ==0{_ff =append (_ff ,_ef );_ab =bitsPerSample ;_ef =0;_bf ++;};}else {_bb :=data [_ed ];_ed ++;_fef :=8;if _ab < _fef {_fef =_ab ;};_bd =8-_fef ;_ef =(_ef <<uint (_fef ))|uint32 (_bb >>uint (_bd ));if _fef < 8{_ggd =_bb <<uint (_fef );};_ab -=_fef ;if _ab ==0{_ff =append (_ff ,_ef );_ab =bitsPerSample ;_ef =0;_bf ++;};};};for _bd >=bitsPerSample {_ce :=_bd ;if _ab < _ce {_ce =_ab ;};_ef =(_ef <<uint (_ce ))|uint32 (_ggd >>uint (8-_ce ));_bd -=_ce ;if _bd > 0{_ggd =_ggd <<uint (_ce );}else {_ggd =0;};_ab -=_ce ;if _ab ==0{_ff =append (_ff ,_ef );_ab =bitsPerSample ;_ef =0;_bf ++;};};return _ff ;};type SampleReader interface{ReadSample ()(uint32 ,error );ReadSamples (_ea []uint32 )error ;};func ResampleUint32 (data []uint32 ,bitsPerInputSample int ,bitsPerOutputSample int )[]uint32 {var _dd []uint32 ;_efe :=bitsPerOutputSample ;var _gd uint32 ;var _ca uint32 ;_ag :=0;_ae :=0;_db :=0;for _db < len (data ){if _ag > 0{_ege :=_ag ;if _efe < _ege {_ege =_efe ;};_gd =(_gd <<uint (_ege ))|uint32 (_ca >>uint (bitsPerInputSample -_ege ));_ag -=_ege ;if _ag > 0{_ca =_ca <<uint (_ege );}else {_ca =0;};_efe -=_ege ;if _efe ==0{_dd =append (_dd ,_gd );_efe =bitsPerOutputSample ;_gd =0;_ae ++;};}else {_dg :=data [_db ];_db ++;_bbe :=bitsPerInputSample ;if _efe < _bbe {_bbe =_efe ;};_ag =bitsPerInputSample -_bbe ;_gd =(_gd <<uint (_bbe ))|uint32 (_dg >>uint (_ag ));if _bbe < bitsPerInputSample {_ca =_dg <<uint (_bbe );};_efe -=_bbe ;if _efe ==0{_dd =append (_dd ,_gd );_efe =bitsPerOutputSample ;_gd =0;_ae ++;};};};for _ag >=bitsPerOutputSample {_eac :=_ag ;if _efe < _eac {_eac =_efe ;};_gd =(_gd <<uint (_eac ))|uint32 (_ca >>uint (bitsPerInputSample -_eac ));_ag -=_eac ;if _ag > 0{_ca =_ca <<uint (_eac );}else {_ca =0;};_efe -=_eac ;if _efe ==0{_dd =append (_dd ,_gd );_efe =bitsPerOutputSample ;_gd =0;_ae ++;};};if _efe > 0&&_efe < bitsPerOutputSample {_gd <<=uint (_efe );_dd =append (_dd ,_gd );};return _dd ;};func (_bbb *Writer )WriteSample (sample uint32 )error {if _ ,_geg :=_bbb ._cc .WriteBits (uint64 (sample ),_bbb ._afb .BitsPerComponent );_geg !=nil {return _geg ;};_bbb ._ggf --;if _bbb ._ggf ==0{_bbb ._ggf =_bbb ._afb .ColorComponents ;_bbb ._cec ++;};if _bbb ._cec ==_bbb ._afb .Width {if _bbb ._fbd {_bbb ._cc .FinishByte ();};_bbb ._cec =0;};return nil ;};type SampleWriter interface{WriteSample (_gdf uint32 )error ;WriteSamples (_ge []uint32 )error ;};func (_aa *Writer )WriteSamples (samples []uint32 )error {for _fbc :=0;_fbc < len (samples );_fbc ++{if _fed :=_aa .WriteSample (samples [_fbc ]);_fed !=nil {return _fed ;};};return nil ;};func NewReader (img _g .ImageBase )*Reader {return &Reader {_fe :_a .NewReader (img .Data ),_f :img ,_ga :img .ColorComponents ,_dc :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};type Reader struct{_f _g .ImageBase ;_fe *_a .Reader ;_b ,_gg ,_ga int ;_dc bool ;};func (_fb *Reader )ReadSample ()(uint32 ,error ){if _fb ._gg ==_fb ._f .Height {return 0,_e .EOF ;};_fg ,_af :=_fb ._fe .ReadBits (byte (_fb ._f .BitsPerComponent ));if _af !=nil {return 0,_af ;};_fb ._ga --;if _fb ._ga ==0{_fb ._ga =_fb ._f .ColorComponents ;_fb ._b ++;};if _fb ._b ==_fb ._f .Width {if _fb ._dc {_fb ._fe .ConsumeRemainingBits ();};_fb ._b =0;_fb ._gg ++;};return uint32 (_fg ),nil ;};type Writer struct{_afb _g .ImageBase ;_cc *_a .Writer ;_cec ,_ggf int ;_fbd bool ;};func NewWriter (img _g .ImageBase )*Writer {return &Writer {_cc :_a .NewWriterMSB (img .Data ),_afb :img ,_ggf :img .ColorComponents ,_fbd :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};

internal/transform/transform.go

@@ -9,4 +9,4 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package transform ;import (_g "fmt";_a "github.com/unidoc/unipdf/v3/common";_e "math";);const _ece =1e9;func (_bfb *Point )transformByMatrix (_bba Matrix ){_bfb .X ,_bfb .Y =_bba .Transform (_bfb .X ,_bfb .Y )};func ScaleMatrix (x ,y float64 )Matrix {return NewMatrix (x ,0,0,y ,0,0)};func (_gaf Point )Rotate (theta float64 )Point {_fadd :=_e .Hypot (_gaf .X ,_gaf .Y );_dgb :=_e .Atan2 (_gaf .Y ,_gaf .X );_dbg ,_gca :=_e .Sincos (_dgb +theta /180.0*_e .Pi );return Point {_fadd *_gca ,_fadd *_dbg };};func TranslationMatrix (tx ,ty float64 )Matrix {return NewMatrix (1,0,0,1,tx ,ty )};func (_ac Matrix )String ()string {_f ,_gc ,_gf ,_b ,_bb ,_ge :=_ac [0],_ac [1],_ac [3],_ac [4],_ac [6],_ac [7];return _g .Sprintf ("\u005b\u00257\u002e\u0034\u0066\u002c%\u0037\u002e4\u0066\u002c\u0025\u0037\u002e\u0034\u0066\u002c%\u0037\u002e\u0034\u0066\u003a\u0025\u0037\u002e\u0034\u0066\u002c\u00257\u002e\u0034\u0066\u005d",_f ,_gc ,_gf ,_b ,_bb ,_ge );};func ShearMatrix (x ,y float64 )Matrix {return NewMatrix (1,y ,x ,1,0,0)};func IdentityMatrix ()Matrix {return NewMatrix (1,0,0,1,0,0)};func (_bf Matrix )Translation ()(float64 ,float64 ){return _bf [6],_bf [7]};func (_gfdc Point )String ()string {return _g .Sprintf ("(\u0025\u002e\u0032\u0066\u002c\u0025\u002e\u0032\u0066\u0029",_gfdc .X ,_gfdc .Y );};func (_gd Matrix )Mult (b Matrix )Matrix {_gd .Concat (b );return _gd };func (_gcd Point )Displace (delta Point )Point {return Point {_gcd .X +delta .X ,_gcd .Y +delta .Y }};func (_cgf *Matrix )clampRange (){for _fee ,_ecb :=range _cgf {if _ecb > _ece {_a .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_ecb ,_ece );_cgf [_fee ]=_ece ;}else if _ecb < -_ece {_a .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_ecb ,-_ece );_cgf [_fee ]=-_ece ;};};};type Point struct{X float64 ;Y float64 ;};func (_ad *Matrix )Clone ()Matrix {return NewMatrix (_ad [0],_ad [1],_ad [3],_ad [4],_ad [6],_ad [7])};func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};const _aag =1.0e-6;func (_cg Matrix )Scale (xScale ,yScale float64 )Matrix {return _cg .Mult (NewMatrix (xScale ,0,0,yScale ,0,0));};func (_bd Matrix )ScalingFactorY ()float64 {return _e .Hypot (_bd [3],_bd [4])};func (_bgd *Point )Set (x ,y float64 ){_bgd .X ,_bgd .Y =x ,y };func (_fc Matrix )ScalingFactorX ()float64 {return _e .Hypot (_fc [0],_fc [1])};type Matrix [9]float64 ;func (_eff Matrix )Unrealistic ()bool {_be ,_ga ,_dgg ,_fad :=_e .Abs (_eff [0]),_e .Abs (_eff [1]),_e .Abs (_eff [3]),_e .Abs (_eff [4]);_gfd :=_be > _ddf &&_fad > _ddf ;_bc :=_ga > _ddf &&_dgg > _ddf ;return !(_gfd ||_bc );};func NewMatrixFromTransforms (xScale ,yScale ,theta ,tx ,ty float64 )Matrix {return IdentityMatrix ().Scale (xScale ,yScale ).Rotate (theta ).Translate (tx ,ty );};func (_dgc Point )Distance (b Point )float64 {return _e .Hypot (_dgc .X -b .X ,_dgc .Y -b .Y )};func RotationMatrix (angle float64 )Matrix {_ab :=_e .Cos (angle );_dg :=_e .Sin (angle );return NewMatrix (_ab ,_dg ,-_dg ,_ab ,0,0);};func (_cd *Matrix )Concat (b Matrix ){*_cd =Matrix {b [0]*_cd [0]+b [1]*_cd [3],b [0]*_cd [1]+b [1]*_cd [4],0,b [3]*_cd [0]+b [4]*_cd [3],b [3]*_cd [1]+b [4]*_cd [4],0,b [6]*_cd [0]+b [7]*_cd [3]+_cd [6],b [6]*_cd [1]+b [7]*_cd [4]+_cd [7],1};_cd .clampRange ();};func (_fga Matrix )Angle ()float64 {_bg :=_e .Atan2 (-_fga [1],_fga [0]);if _bg < 0.0{_bg +=2*_e .Pi ;};return _bg /_e .Pi *180.0;};func (_dcb Matrix )Transform (x ,y float64 )(float64 ,float64 ){_df :=x *_dcb [0]+y *_dcb [3]+_dcb [6];_abe :=x *_dcb [1]+y *_dcb [4]+_dcb [7];return _df ,_abe ;};const _ddf =1e-6;func (_aa Matrix )Translate (tx ,ty float64 )Matrix {return NewMatrix (_aa [0],_aa [1],_aa [3],_aa [4],_aa [6]+tx ,_aa [7]+ty );};func (_dc Matrix )Rotate (theta float64 )Matrix {_fe ,_dgd :=_e .Sincos (theta /180.0*_e .Pi );return _dc .Mult (NewMatrix (_dgd ,-_fe ,_fe ,_dgd ,0,0));};func (_ea Matrix )Inverse ()(Matrix ,bool ){_dd ,_adg :=_ea [0],_ea [1];_cf ,_bdb :=_ea [3],_ea [4];_cb ,_fbe :=_ea [6],_ea [7];_cdc :=_dd *_bdb -_adg *_cf ;if _e .Abs (_cdc )< _aag {return Matrix {},false ;};_ec ,_fa :=_bdb /_cdc ,-_adg /_cdc ;_abed ,_de :=-_cf /_cdc ,_dd /_cdc ;_ef :=-(_ec *_cb +_abed *_fbe );_af :=-(_fa *_cb +_de *_fbe );return NewMatrix (_ec ,_fa ,_abed ,_de ,_ef ,_af ),true ;};func NewMatrix (a ,b ,c ,d ,tx ,ty float64 )Matrix {_c :=Matrix {a ,b ,0,c ,d ,0,tx ,ty ,1};_c .clampRange ();return _c ;};func (_db *Point )Transform (a ,b ,c ,d ,tx ,ty float64 ){_eg :=NewMatrix (a ,b ,c ,d ,tx ,ty );_db .transformByMatrix (_eg );};func (_dff Point )Interpolate (b Point ,t float64 )Point {return Point {X :(1-t )*_dff .X +t *b .X ,Y :(1-t )*_dff .Y +t *b .Y };};func (_fg *Matrix )Set (a ,b ,c ,d ,tx ,ty float64 ){_fg [0],_fg [1]=a ,b ;_fg [3],_fg [4]=c ,d ;_fg [6],_fg [7]=tx ,ty ;_fg .clampRange ();};func (_fb *Matrix )Shear (x ,y float64 ){_fb .Concat (ShearMatrix (x ,y ))};
+package transform ;import (_f "fmt";_fe "github.com/unidoc/unipdf/v3/common";_a "math";);func IdentityMatrix ()Matrix {return NewMatrix (1,0,0,1,0,0)};func (_fa Matrix )Mult (b Matrix )Matrix {_fa .Concat (b );return _fa };func (_af *Matrix )Shear (x ,y float64 ){_af .Concat (ShearMatrix (x ,y ))};func (_fbf Matrix )String ()string {_c ,_ab ,_dd ,_ac ,_eb ,_ca :=_fbf [0],_fbf [1],_fbf [3],_fbf [4],_fbf [6],_fbf [7];return _f .Sprintf ("\u005b\u00257\u002e\u0034\u0066\u002c%\u0037\u002e4\u0066\u002c\u0025\u0037\u002e\u0034\u0066\u002c%\u0037\u002e\u0034\u0066\u003a\u0025\u0037\u002e\u0034\u0066\u002c\u00257\u002e\u0034\u0066\u005d",_c ,_ab ,_dd ,_ac ,_eb ,_ca );};func NewMatrix (a ,b ,c ,d ,tx ,ty float64 )Matrix {_b :=Matrix {a ,b ,0,c ,d ,0,tx ,ty ,1};_b .clampRange ();return _b ;};func (_ea Matrix )ScalingFactorX ()float64 {return _a .Hypot (_ea [0],_ea [1])};func (_cec *Point )Set (x ,y float64 ){_cec .X ,_cec .Y =x ,y };type Matrix [9]float64 ;func (_bc Matrix )Angle ()float64 {_afa :=_a .Atan2 (-_bc [1],_bc [0]);if _afa < 0.0{_afa +=2*_a .Pi ;};return _afa /_a .Pi *180.0;};func (_aea *Matrix )clampRange (){for _ddd ,_cc :=range _aea {if _cc > _cg {_fe .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_cc ,_cg );_aea [_ddd ]=_cg ;}else if _cc < -_cg {_fe .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_cc ,-_cg );_aea [_ddd ]=-_cg ;};};};func (_eg *Matrix )Clone ()Matrix {return NewMatrix (_eg [0],_eg [1],_eg [3],_eg [4],_eg [6],_eg [7])};func (_ccg Point )Interpolate (b Point ,t float64 )Point {return Point {X :(1-t )*_ccg .X +t *b .X ,Y :(1-t )*_ccg .Y +t *b .Y };};func RotationMatrix (angle float64 )Matrix {_fb :=_a .Cos (angle );_e :=_a .Sin (angle );return NewMatrix (_fb ,_e ,-_e ,_fb ,0,0);};func (_dda Matrix )Translate (tx ,ty float64 )Matrix {return NewMatrix (_dda [0],_dda [1],_dda [3],_dda [4],_dda [6]+tx ,_dda [7]+ty );};func (_ef Matrix )Translation ()(float64 ,float64 ){return _ef [6],_ef [7]};func (_g *Matrix )Set (a ,b ,c ,d ,tx ,ty float64 ){_g [0],_g [1]=a ,b ;_g [3],_g [4]=c ,d ;_g [6],_g [7]=tx ,ty ;_g .clampRange ();};func (_bg Point )String ()string {return _f .Sprintf ("(\u0025\u002e\u0032\u0066\u002c\u0025\u002e\u0032\u0066\u0029",_bg .X ,_bg .Y );};func (_ae Matrix )Inverse ()(Matrix ,bool ){_bb ,_fbd :=_ae [0],_ae [1];_ed ,_gd :=_ae [3],_ae [4];_aa ,_bd :=_ae [6],_ae [7];_egf :=_bb *_gd -_fbd *_ed ;if _a .Abs (_egf )< _db {return Matrix {},false ;};_bcd ,_gb :=_gd /_egf ,-_fbd /_egf ;_abe ,_abea :=-_ed /_egf ,_bb /_egf ;_cb :=-(_bcd *_aa +_abe *_bd );_cf :=-(_gb *_aa +_abea *_bd );return NewMatrix (_bcd ,_gb ,_abe ,_abea ,_cb ,_cf ),true ;};const _gc =1e-6;func (_cgb Point )Rotate (theta float64 )Point {_cbg :=_a .Hypot (_cgb .X ,_cgb .Y );_gac :=_a .Atan2 (_cgb .Y ,_cgb .X );_caeg ,_cd :=_a .Sincos (_gac +theta /180.0*_a .Pi );return Point {_cbg *_cd ,_cbg *_caeg };};const _cg =1e9;func (_ebd *Matrix )Concat (b Matrix ){*_ebd =Matrix {b [0]*_ebd [0]+b [1]*_ebd [3],b [0]*_ebd [1]+b [1]*_ebd [4],0,b [3]*_ebd [0]+b [4]*_ebd [3],b [3]*_ebd [1]+b [4]*_ebd [4],0,b [6]*_ebd [0]+b [7]*_ebd [3]+_ebd [6],b [6]*_ebd [1]+b [7]*_ebd [4]+_ebd [7],1};_ebd .clampRange ();};func (_fbg Matrix )ScalingFactorY ()float64 {return _a .Hypot (_fbg [3],_fbg [4])};func NewMatrixFromTransforms (xScale ,yScale ,theta ,tx ,ty float64 )Matrix {return IdentityMatrix ().Scale (xScale ,yScale ).Rotate (theta ).Translate (tx ,ty );};func (_ee Matrix )Rotate (theta float64 )Matrix {_ce ,_acg :=_a .Sincos (theta /180.0*_a .Pi );return _ee .Mult (NewMatrix (_acg ,-_ce ,_ce ,_acg ,0,0));};func TranslationMatrix (tx ,ty float64 )Matrix {return NewMatrix (1,0,0,1,tx ,ty )};const _db =1.0e-6;func (_fbe Matrix )Scale (xScale ,yScale float64 )Matrix {return _fbe .Mult (NewMatrix (xScale ,0,0,yScale ,0,0));};func (_df Point )Displace (delta Point )Point {return Point {_df .X +delta .X ,_df .Y +delta .Y }};func (_ba Matrix )Transform (x ,y float64 )(float64 ,float64 ){_ga :=x *_ba [0]+y *_ba [3]+_ba [6];_fee :=x *_ba [1]+y *_ba [4]+_ba [7];return _ga ,_fee ;};type Point struct{X float64 ;Y float64 ;};func (_ad *Point )Transform (a ,b ,c ,d ,tx ,ty float64 ){_ccd :=NewMatrix (a ,b ,c ,d ,tx ,ty );_ad .transformByMatrix (_ccd );};func (_cae Matrix )Unrealistic ()bool {_gg ,_fad ,_aed ,_fg :=_a .Abs (_cae [0]),_a .Abs (_cae [1]),_a .Abs (_cae [3]),_a .Abs (_cae [4]);_aaf :=_gg > _gc &&_fg > _gc ;_ccc :=_fad > _gc &&_aed > _gc ;return !(_aaf ||_ccc );};func ShearMatrix (x ,y float64 )Matrix {return NewMatrix (1,y ,x ,1,0,0)};func (_baa Point )Distance (b Point )float64 {return _a .Hypot (_baa .X -b .X ,_baa .Y -b .Y )};func (_aee *Point )transformByMatrix (_gf Matrix ){_aee .X ,_aee .Y =_gf .Transform (_aee .X ,_aee .Y )};func ScaleMatrix (x ,y float64 )Matrix {return NewMatrix (x ,0,0,y ,0,0)};func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};

model/optimize/optimize.go

@@ -9,32 +9,30 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package optimize ;import (_cd "bytes";_d "crypto/md5";_bb "errors";_bf "fmt";_db "github.com/unidoc/unipdf/v3/common";_ca "github.com/unidoc/unipdf/v3/contentstream";_b "github.com/unidoc/unipdf/v3/core";_cf "github.com/unidoc/unipdf/v3/extractor";_bad "github.com/unidoc/unipdf/v3/internal/textencoding";_bd "github.com/unidoc/unipdf/v3/model";_dg "github.com/unidoc/unitype";_a "golang.org/x/image/draw";_f "image";_ba "math";);
+package optimize ;import (_c "bytes";_ab "crypto/md5";_aa "errors";_b "fmt";_dc "github.com/unidoc/unipdf/v3/common";_ge "github.com/unidoc/unipdf/v3/contentstream";_d "github.com/unidoc/unipdf/v3/core";_abb "github.com/unidoc/unipdf/v3/extractor";_ag "github.com/unidoc/unipdf/v3/internal/textencoding";_gf "github.com/unidoc/unipdf/v3/model";_ec "github.com/unidoc/unitype";_a "golang.org/x/image/draw";_e "image";_f "math";);
+
+// Chain allows to use sequence of optimizers.
+// It implements interface model.Optimizer.
+type Chain struct{_bf []_gf .Optimizer };
+
+// CleanFonts cleans up embedded fonts, reducing font sizes.
+type CleanFonts struct{
+
+// Subset embedded fonts if encountered (if true).
+// Otherwise attempts to reduce the font program.
+Subset bool ;};func _fgcg (_ggce *_d .PdfObjectStream ,_gcc []rune ,_fga []_ec .GlyphIndex )error {_ggce ,_feb :=_d .GetStream (_ggce );if !_feb {_dc .Log .Debug ("\u0045\u006d\u0062\u0065\u0064\u0064\u0065\u0064\u0020\u0066\u006f\u006e\u0074\u0020\u006f\u0062\u006a\u0065c\u0074\u0020\u006e\u006f\u0074\u0020\u0066o\u0075\u006e\u0064\u0020\u002d\u002d\u0020\u0041\u0042\u004f\u0052T\u0020\u0073\u0075\u0062\u0073\u0065\u0074\u0074\u0069\u006e\u0067");return _aa .New ("\u0066\u006f\u006e\u0074fi\u006c\u0065\u0032\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064");};_fbf ,_ggd :=_d .DecodeStream (_ggce );if _ggd !=nil {_dc .Log .Debug ("\u0044\u0065c\u006f\u0064\u0065 \u0065\u0072\u0072\u006f\u0072\u003a\u0020\u0025\u0076",_ggd );return _ggd ;};_def ,_ggd :=_ec .Parse (_c .NewReader (_fbf ));if _ggd !=nil {_dc .Log .Debug ("\u0045\u0072\u0072\u006f\u0072\u0020\u0070\u0061\u0072\u0073\u0069n\u0067\u0020\u0025\u0064\u0020\u0062\u0079\u0074\u0065\u0020f\u006f\u006e\u0074",len (_ggce .Stream ));return _ggd ;};_cda :=_fga ;if len (_gcc )> 0{_bbb :=_def .LookupRunes (_gcc );_cda =append (_cda ,_bbb ...);};_def ,_ggd =_def .SubsetKeepIndices (_cda );if _ggd !=nil {_dc .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020s\u0075\u0062\u0073\u0065\u0074t\u0069n\u0067 \u0066\u006f\u006e\u0074\u003a\u0020\u0025v",_ggd );return _ggd ;};var _cgf _c .Buffer ;_ggd =_def .Write (&_cgf );if _ggd !=nil {_dc .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_ggd );return _ggd ;};if _cgf .Len ()> len (_fbf ){_dc .Log .Debug ("\u0052\u0065-\u0077\u0072\u0069\u0074\u0074\u0065\u006e\u0020\u0066\u006f\u006e\u0074\u0020\u0069\u0073\u0020\u006c\u0061\u0072\u0067\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u002d\u0020\u0073\u006b\u0069\u0070");return nil ;};_fgac ,_ggd :=_d .MakeStream (_cgf .Bytes (),_d .NewFlateEncoder ());if _ggd !=nil {_dc .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_ggd );return _ggd ;};*_ggce =*_fgac ;_ggce .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_d .MakeInteger (int64 (_cgf .Len ())));return nil ;};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_bbeb *ObjectStreams )Optimize (objects []_b .PdfObject )(_ffa []_b .PdfObject ,_cbd error ){_dgcc :=&_b .PdfObjectStreams {};_ddd :=make ([]_b .PdfObject ,0,len (objects ));for _ ,_gbdf :=range objects {if _acd ,_dfac :=_gbdf .(*_b .PdfIndirectObject );_dfac &&_acd .GenerationNumber ==0{_dgcc .Append (_gbdf );}else {_ddd =append (_ddd ,_gbdf );};};if _dgcc .Len ()==0{return _ddd ,nil ;};_ffa =make ([]_b .PdfObject ,0,len (_ddd )+_dgcc .Len ()+1);if _dgcc .Len ()> 1{_ffa =append (_ffa ,_dgcc );};_ffa =append (_ffa ,_dgcc .Elements ()...);_ffa =append (_ffa ,_ddd ...);return _ffa ,nil ;};
+func (_fb *CleanContentstream )Optimize (objects []_d .PdfObject )(_abc []_d .PdfObject ,_ccc error ){_gg :=map[*_d .PdfObjectStream ]struct{}{};var _geg []*_d .PdfObjectStream ;_feg :=func (_ece *_d .PdfObjectStream ){if _ ,_gd :=_gg [_ece ];!_gd {_gg [_ece ]=struct{}{};_geg =append (_geg ,_ece );};};for _ ,_bed :=range objects {switch _bga :=_bed .(type ){case *_d .PdfIndirectObject :switch _bgd :=_bga .PdfObject .(type ){case *_d .PdfObjectDictionary :if _ed ,_af :=_d .GetName (_bgd .Get ("\u0054\u0079\u0070\u0065"));!_af ||_ed .String ()!="\u0050\u0061\u0067\u0065"{continue ;};if _bec ,_ba :=_d .GetStream (_bgd .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_ba {_feg (_bec );}else if _bag ,_bgf :=_d .GetArray (_bgd .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_bgf {for _ ,_ee :=range _bag .Elements (){if _cag ,_fea :=_d .GetStream (_ee );_fea {_feg (_cag );};};};};case *_d .PdfObjectStream :if _efe ,_dd :=_d .GetName (_bga .Get ("\u0054\u0079\u0070\u0065"));!_dd ||_efe .String ()!="\u0058O\u0062\u006a\u0065\u0063\u0074"{continue ;};if _cdg ,_bb :=_d .GetName (_bga .Get ("\u0053u\u0062\u0074\u0079\u0070\u0065"));!_bb ||_cdg .String ()!="\u0046\u006f\u0072\u006d"{continue ;};_feg (_bga );};};for _ ,_aab :=range _geg {_ccc =_fe (_aab );if _ccc !=nil {return nil ,_ccc ;};};return objects ,nil ;};func _fccf (_dedge _d .PdfObject )(_ddf string ,_daac []_d .PdfObject ){var _gge _c .Buffer ;switch _gacc :=_dedge .(type ){case *_d .PdfIndirectObject :_daac =append (_daac ,_gacc );_dedge =_gacc .PdfObject ;};switch _dadd :=_dedge .(type ){case *_d .PdfObjectStream :if _ecee ,_begg :=_d .DecodeStream (_dadd );_begg ==nil {_gge .Write (_ecee );_daac =append (_daac ,_dadd );};case *_d .PdfObjectArray :for _ ,_fag :=range _dadd .Elements (){switch _gffb :=_fag .(type ){case *_d .PdfObjectStream :if _cagd ,_bdfc :=_d .DecodeStream (_gffb );_bdfc ==nil {_gge .Write (_cagd );_daac =append (_daac ,_gffb );};};};};return _gge .String (),_daac ;};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_bde *Chain )Optimize (objects []_b .PdfObject )(_cae []_b .PdfObject ,_dbc error ){_cae =objects ;for _ ,_cg :=range _bde ._fd {_cae ,_dbc =_cg .Optimize (_cae );if _dbc !=nil {return _cae ,_dbc ;};};return _cae ,nil ;};
-
-// Append appends optimizers to the chain.
-func (_aa *Chain )Append (optimizers ..._bd .Optimizer ){_aa ._fd =append (_aa ._fd ,optimizers ...)};type content struct{_dde string ;_ddec *_bd .PdfPageResources ;};
-
-// CombineDuplicateDirectObjects combines duplicated direct objects by its data hash.
-// It implements interface model.Optimizer.
-type CombineDuplicateDirectObjects struct{};func _agg (_dda []_b .PdfObject )[]*imageInfo {_bfd :=_b .PdfObjectName ("\u0053u\u0062\u0074\u0079\u0070\u0065");_age :=make (map[*_b .PdfObjectStream ]struct{});var _dgbg error ;var _aac []*imageInfo ;for _ ,_fdec :=range _dda {_becf ,_fcf :=_b .GetStream (_fdec );if !_fcf {continue ;};if _ ,_dfg :=_age [_becf ];_dfg {continue ;};_age [_becf ]=struct{}{};_cabc :=_becf .PdfObjectDictionary .Get (_bfd );_agfa ,_fcf :=_b .GetName (_cabc );if !_fcf ||string (*_agfa )!="\u0049\u006d\u0061g\u0065"{continue ;};_ggd :=&imageInfo {BitsPerComponent :8,Stream :_becf };if _ggd .ColorSpace ,_dgbg =_bd .DetermineColorspaceNameFromPdfObject (_becf .PdfObjectDictionary .Get ("\u0043\u006f\u006c\u006f\u0072\u0053\u0070\u0061\u0063\u0065"));_dgbg !=nil {_db .Log .Error ("\u0045\u0072\u0072\u006f\u0072\u0020\u0064\u0065\u0074\u0065r\u006d\u0069\u006e\u0065\u0020\u0063\u006fl\u006f\u0072\u0020\u0073\u0070\u0061\u0063\u0065\u0020\u0025\u0073",_dgbg );continue ;};if _egc ,_edg :=_b .GetIntVal (_becf .PdfObjectDictionary .Get ("\u0042\u0069t\u0073\u0050\u0065r\u0043\u006f\u006d\u0070\u006f\u006e\u0065\u006e\u0074"));_edg {_ggd .BitsPerComponent =_egc ;};if _fdd ,_ceb :=_b .GetIntVal (_becf .PdfObjectDictionary .Get ("\u0057\u0069\u0064t\u0068"));_ceb {_ggd .Width =_fdd ;};if _cgg ,_eff :=_b .GetIntVal (_becf .PdfObjectDictionary .Get ("\u0048\u0065\u0069\u0067\u0068\u0074"));_eff {_ggd .Height =_cgg ;};switch _ggd .ColorSpace {case "\u0044e\u0076\u0069\u0063\u0065\u0052\u0047B":_ggd .ColorComponents =3;case "\u0044\u0065\u0076\u0069\u0063\u0065\u0047\u0072\u0061\u0079":_ggd .ColorComponents =1;default:_db .Log .Warning ("\u004f\u0070\u0074\u0069\u006d\u0069\u007a\u0061t\u0069\u006f\u006e i\u0073\u0020\u006e\u006f\u0074\u0020s\u0075\u0070\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0066\u006f\u0072\u0020\u0063\u006fl\u006f\u0072\u0020\u0073\u0070\u0061\u0063\u0065 \u0025\u0073",_ggd .ColorSpace );continue ;};_aac =append (_aac ,_ggd );};return _aac ;};func _ddafb (_fcgg _b .PdfObject )(_cafff string ,_efce []_b .PdfObject ){var _bfe _cd .Buffer ;switch _fece :=_fcgg .(type ){case *_b .PdfIndirectObject :_efce =append (_efce ,_fece );_fcgg =_fece .PdfObject ;};switch _dfba :=_fcgg .(type ){case *_b .PdfObjectStream :if _eccd ,_aged :=_b .DecodeStream (_dfba );_aged ==nil {_bfe .Write (_eccd );_efce =append (_efce ,_dfba );};case *_b .PdfObjectArray :for _ ,_accd :=range _dfba .Elements (){switch _agd :=_accd .(type ){case *_b .PdfObjectStream :if _adgge ,_ccda :=_b .DecodeStream (_agd );_ccda ==nil {_bfe .Write (_adgge );_efce =append (_efce ,_agd );};};};};return _bfe .String (),_efce ;};
-
-// ImagePPI optimizes images by scaling images such that the PPI (pixels per inch) is never higher than ImageUpperPPI.
-// TODO(a5i): Add support for inline images.
-// It implements interface model.Optimizer.
-type ImagePPI struct{ImageUpperPPI float64 ;};type objectStructure struct{_gfbb *_b .PdfObjectDictionary ;_bbff *_b .PdfObjectDictionary ;_fdeb []*_b .PdfIndirectObject ;};func _fgcd (_dcbd *_b .PdfObjectStream ,_aeb []rune ,_dgg []_dg .GlyphIndex )error {_dcbd ,_cdfe :=_b .GetStream (_dcbd );if !_cdfe {_db .Log .Debug ("\u0045\u006d\u0062\u0065\u0064\u0064\u0065\u0064\u0020\u0066\u006f\u006e\u0074\u0020\u006f\u0062\u006a\u0065c\u0074\u0020\u006e\u006f\u0074\u0020\u0066o\u0075\u006e\u0064\u0020\u002d\u002d\u0020\u0041\u0042\u004f\u0052T\u0020\u0073\u0075\u0062\u0073\u0065\u0074\u0074\u0069\u006e\u0067");return _bb .New ("\u0066\u006f\u006e\u0074fi\u006c\u0065\u0032\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064");};_dcf ,_bdeg :=_b .DecodeStream (_dcbd );if _bdeg !=nil {_db .Log .Debug ("\u0044\u0065c\u006f\u0064\u0065 \u0065\u0072\u0072\u006f\u0072\u003a\u0020\u0025\u0076",_bdeg );return _bdeg ;};_gdd ,_bdeg :=_dg .Parse (_cd .NewReader (_dcf ));if _bdeg !=nil {_db .Log .Debug ("\u0045\u0072\u0072\u006f\u0072\u0020\u0070\u0061\u0072\u0073\u0069n\u0067\u0020\u0025\u0064\u0020\u0062\u0079\u0074\u0065\u0020f\u006f\u006e\u0074",len (_dcbd .Stream ));return _bdeg ;};_adb :=_dgg ;if len (_aeb )> 0{_ab :=_gdd .LookupRunes (_aeb );_adb =append (_adb ,_ab ...);};_gdd ,_bdeg =_gdd .SubsetKeepIndices (_adb );if _bdeg !=nil {_db .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020s\u0075\u0062\u0073\u0065\u0074t\u0069n\u0067 \u0066\u006f\u006e\u0074\u003a\u0020\u0025v",_bdeg );return _bdeg ;};var _ace _cd .Buffer ;_bdeg =_gdd .Write (&_ace );if _bdeg !=nil {_db .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_bdeg );return _bdeg ;};if _ace .Len ()> len (_dcf ){_db .Log .Debug ("\u0052\u0065-\u0077\u0072\u0069\u0074\u0074\u0065\u006e\u0020\u0066\u006f\u006e\u0074\u0020\u0069\u0073\u0020\u006c\u0061\u0072\u0067\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u002d\u0020\u0073\u006b\u0069\u0070");return nil ;};_ebd ,_bdeg :=_b .MakeStream (_ace .Bytes (),_b .NewFlateEncoder ());if _bdeg !=nil {_db .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_bdeg );return _bdeg ;};*_dcbd =*_ebd ;_dcbd .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_b .MakeInteger (int64 (_ace .Len ())));return nil ;};
-
-// CombineDuplicateStreams combines duplicated streams by its data hash.
-// It implements interface model.Optimizer.
-type CombineDuplicateStreams struct{};
+func (_be *Chain )Optimize (objects []_d .PdfObject )(_abg []_d .PdfObject ,_gbc error ){_abg =objects ;for _ ,_gc :=range _be ._bf {_abg ,_gbc =_gc .Optimize (_abg );if _gbc !=nil {return _abg ,_gbc ;};};return _abg ,nil ;};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_ggcg *CombineDuplicateStreams )Optimize (objects []_b .PdfObject )(_cce []_b .PdfObject ,_ceg error ){_ffe :=make (map[_b .PdfObject ]_b .PdfObject );_cfca :=make (map[_b .PdfObject ]struct{});_ebgc :=make (map[string ][]*_b .PdfObjectStream );for _ ,_gcb :=range objects {if _aca ,_efe :=_gcb .(*_b .PdfObjectStream );_efe {_ecd :=_d .New ();_ecd .Write ([]byte (_aca .Stream ));_add :=string (_ecd .Sum (nil ));_ebgc [_add ]=append (_ebgc [_add ],_aca );};};for _ ,_caaf :=range _ebgc {if len (_caaf )< 2{continue ;};_fdc :=_caaf [0];for _bbcf :=1;_bbcf < len (_caaf );_bbcf ++{_bfgb :=_caaf [_bbcf ];_ffe [_bfgb ]=_fdc ;_cfca [_bfgb ]=struct{}{};};};_cce =make ([]_b .PdfObject ,0,len (objects )-len (_cfca ));for _ ,_eae :=range objects {if _ ,_bbcb :=_cfca [_eae ];_bbcb {continue ;};_cce =append (_cce ,_eae );};_ddaf (_cce ,_ffe );return _cce ,nil ;};
+func (_aff *CleanFonts )Optimize (objects []_d .PdfObject )(_febd []_d .PdfObject ,_beca error ){var _cagf map[*_d .PdfObjectStream ]struct{};if _aff .Subset {var _fgg error ;_cagf ,_fgg =_de (objects );if _fgg !=nil {return nil ,_fgg ;};};for _ ,_efga :=range objects {_ga ,_gaa :=_d .GetStream (_efga );if !_gaa {continue ;};if _ ,_beab :=_cagf [_ga ];_beab {continue ;};_ecb ,_efdb :=_d .NewEncoderFromStream (_ga );if _efdb !=nil {_dc .Log .Debug ("\u0045\u0052RO\u0052\u0020\u0067e\u0074\u0074\u0069\u006eg e\u006eco\u0064\u0065\u0072\u003a\u0020\u0025\u0076 -\u0020\u0069\u0067\u006e\u006f\u0072\u0069n\u0067",_efdb );continue ;};_gad ,_efdb :=_ecb .DecodeStream (_ga );if _efdb !=nil {_dc .Log .Debug ("\u0044\u0065\u0063\u006f\u0064\u0069\u006e\u0067\u0020\u0065r\u0072\u006f\u0072\u0020\u003a\u0020\u0025v\u0020\u002d\u0020\u0069\u0067\u006e\u006f\u0072\u0069\u006e\u0067",_efdb );continue ;};if len (_gad )< 4{continue ;};_bad :=string (_gad [:4]);if _bad =="\u004f\u0054\u0054\u004f"{continue ;};if _bad !="\u0000\u0001\u0000\u0000"&&_bad !="\u0074\u0072\u0075\u0065"{continue ;};_egdg ,_efdb :=_ec .Parse (_c .NewReader (_gad ));if _efdb !=nil {_dc .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020P\u0061\u0072\u0073\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_efdb );continue ;};_efdb =_egdg .Optimize ();if _efdb !=nil {continue ;};var _gccf _c .Buffer ;_efdb =_egdg .Write (&_gccf );if _efdb !=nil {_dc .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020W\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_efdb );continue ;};if _gccf .Len ()> len (_gad ){_dc .Log .Debug ("\u0052\u0065-\u0077\u0072\u0069\u0074\u0074\u0065\u006e\u0020\u0066\u006f\u006e\u0074\u0020\u0069\u0073\u0020\u006c\u0061\u0072\u0067\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u002d\u0020\u0073\u006b\u0069\u0070");continue ;};_bba ,_efdb :=_d .MakeStream (_gccf .Bytes (),_d .NewFlateEncoder ());if _efdb !=nil {continue ;};*_ga =*_bba ;_ga .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_d .MakeInteger (int64 (_gccf .Len ())));};return objects ,nil ;};func _dedg (_efgae []_d .PdfObject ){for _dfgaa ,_eea :=range _efgae {switch _caec :=_eea .(type ){case *_d .PdfIndirectObject :_caec .ObjectNumber =int64 (_dfgaa +1);_caec .GenerationNumber =0;case *_d .PdfObjectStream :_caec .ObjectNumber =int64 (_dfgaa +1);_caec .GenerationNumber =0;case *_d .PdfObjectStreams :_caec .ObjectNumber =int64 (_dfgaa +1);_caec .GenerationNumber =0;};};};
+
+// New creates a optimizers chain from options.
+func New (options Options )*Chain {_agdc :=new (Chain );if options .CleanFonts ||options .SubsetFonts {_agdc .Append (&CleanFonts {Subset :options .SubsetFonts });};if options .CleanContentstream {_agdc .Append (new (CleanContentstream ));};if options .ImageUpperPPI > 0{_feabb :=new (ImagePPI );_feabb .ImageUpperPPI =options .ImageUpperPPI ;_agdc .Append (_feabb );};if options .ImageQuality > 0{_affc :=new (Image );_affc .ImageQuality =options .ImageQuality ;_agdc .Append (_affc );};if options .CombineDuplicateDirectObjects {_agdc .Append (new (CombineDuplicateDirectObjects ));};if options .CombineDuplicateStreams {_agdc .Append (new (CombineDuplicateStreams ));};if options .CombineIdenticalIndirectObjects {_agdc .Append (new (CombineIdenticalIndirectObjects ));};if options .UseObjectStreams {_agdc .Append (new (ObjectStreams ));};if options .CompressStreams {_agdc .Append (new (CompressStreams ));};return _agdc ;};func _db (_eb *_ge .ContentStreamOperations )*_ge .ContentStreamOperations {if _eb ==nil {return nil ;};_bg :=_ge .ContentStreamOperations {};for _ ,_cf :=range *_eb {switch _cf .Operand {case "\u0042\u0044\u0043","\u0042\u004d\u0043","\u0045\u004d\u0043":continue ;case "\u0054\u006d":if len (_cf .Params )==6{if _cg ,_ca :=_d .GetNumbersAsFloat (_cf .Params );_ca ==nil {if _cg [0]==1&&_cg [1]==0&&_cg [2]==0&&_cg [3]==1{_cf =&_ge .ContentStreamOperation {Params :[]_d .PdfObject {_cf .Params [4],_cf .Params [5]},Operand :"\u0054\u0064"};};};};};_bg =append (_bg ,_cf );};return &_bg ;};
 
 // CleanContentstream cleans up redundant operands in content streams, including Page and XObject Form
 // contents. This process includes:
@@ -44,56 +42,58 @@ func (_ggcg *CombineDuplicateStreams )Optimize (objects []_b .PdfObject )(_cce [
 type CleanContentstream struct{};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_dcg *CombineIdenticalIndirectObjects )Optimize (objects []_b .PdfObject )(_ffg []_b .PdfObject ,_efc error ){_bbca (objects );_eba :=make (map[_b .PdfObject ]_b .PdfObject );_dac :=make (map[_b .PdfObject ]struct{});_defe :=make (map[string ][]*_b .PdfIndirectObject );for _ ,_caeag :=range objects {_bga ,_adbc :=_caeag .(*_b .PdfIndirectObject );if !_adbc {continue ;};if _edc ,_eaed :=_bga .PdfObject .(*_b .PdfObjectDictionary );_eaed {if _bbd ,_cab :=_edc .Get ("\u0054\u0079\u0070\u0065").(*_b .PdfObjectName );_cab &&*_bbd =="\u0050\u0061\u0067\u0065"{continue ;};_beee :=_d .New ();_beee .Write ([]byte (_edc .WriteString ()));_ddc :=string (_beee .Sum (nil ));_defe [_ddc ]=append (_defe [_ddc ],_bga );};};for _ ,_cfe :=range _defe {if len (_cfe )< 2{continue ;};_gdb :=_cfe [0];for _ccd :=1;_ccd < len (_cfe );_ccd ++{_baa :=_cfe [_ccd ];_eba [_baa ]=_gdb ;_dac [_baa ]=struct{}{};};};_ffg =make ([]_b .PdfObject ,0,len (objects )-len (_dac ));for _ ,_bbab :=range objects {if _ ,_bece :=_dac [_bbab ];_bece {continue ;};_ffg =append (_ffg ,_bbab );};_ddaf (_ffg ,_eba );return _ffg ,nil ;};
+func (_dad *CompressStreams )Optimize (objects []_d .PdfObject )(_bbec []_d .PdfObject ,_cgbb error ){_bbec =make ([]_d .PdfObject ,len (objects ));copy (_bbec ,objects );for _ ,_edb :=range objects {_ddeb ,_caa :=_d .GetStream (_edb );if !_caa {continue ;};if _eed :=_ddeb .Get ("\u0046\u0069\u006c\u0074\u0065\u0072");_eed !=nil {if _ ,_bee :=_d .GetName (_eed );_bee {continue ;};if _eeg ,_aca :=_d .GetArray (_eed );_aca &&_eeg .Len ()> 0{continue ;};};_gcd :=_d .NewFlateEncoder ();var _bde []byte ;_bde ,_cgbb =_gcd .EncodeBytes (_ddeb .Stream );if _cgbb !=nil {return _bbec ,_cgbb ;};_ddd :=_gcd .MakeStreamDict ();if len (_bde )+len (_ddd .WriteString ())< len (_ddeb .Stream ){_ddeb .Stream =_bde ;_ddeb .PdfObjectDictionary .Merge (_ddd );_ddeb .PdfObjectDictionary .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_d .MakeInteger (int64 (len (_ddeb .Stream ))));};};return _bbec ,nil ;};
+
+// CombineDuplicateStreams combines duplicated streams by its data hash.
+// It implements interface model.Optimizer.
+type CombineDuplicateStreams struct{};type content struct{_gbe string ;_fee *_gf .PdfPageResources ;};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_bgdg *Image )Optimize (objects []_b .PdfObject )(_bbdd []_b .PdfObject ,_aab error ){if _bgdg .ImageQuality <=0{return objects ,nil ;};_gbc :=_agg (objects );if len (_gbc )==0{return objects ,nil ;};_adg :=make (map[_b .PdfObject ]_b .PdfObject );_becc :=make (map[_b .PdfObject ]struct{});for _ ,_dcc :=range _gbc {_fdcb :=_dcc .Stream .PdfObjectDictionary .Get (_b .PdfObjectName ("\u0053\u004d\u0061s\u006b"));_becc [_fdcb ]=struct{}{};};for _ebb ,_dfcb :=range _gbc {_cfb :=_dfcb .Stream ;if _ ,_ggeg :=_becc [_cfb ];_ggeg {continue ;};_aege ,_ggfg :=_b .NewEncoderFromStream (_cfb );if _ggfg !=nil {_db .Log .Warning ("\u0045\u0072\u0072\u006f\u0072 \u0067\u0065\u0074\u0020\u0065\u006e\u0063\u006f\u0064\u0065\u0072\u0020\u0066o\u0072\u0020\u0074\u0068\u0065\u0020\u0069\u006d\u0061\u0067\u0065\u0020\u0073\u0074\u0072\u0065\u0061\u006d\u0020\u0025\u0073");continue ;};_cddd ,_ggfg :=_aege .DecodeStream (_cfb );if _ggfg !=nil {_db .Log .Warning ("\u0045\u0072\u0072\u006f\u0072\u0020\u0064\u0065\u0063\u006f\u0064\u0065\u0020\u0074\u0068e\u0020i\u006d\u0061\u0067\u0065\u0020\u0073\u0074\u0072\u0065\u0061\u006d\u0020\u0025\u0073");continue ;};_feg :=_b .NewDCTEncoder ();_feg .ColorComponents =_dfcb .ColorComponents ;_feg .Quality =_bgdg .ImageQuality ;_feg .BitsPerComponent =_dfcb .BitsPerComponent ;_feg .Width =_dfcb .Width ;_feg .Height =_dfcb .Height ;_dgf ,_ggfg :=_feg .EncodeBytes (_cddd );if _ggfg !=nil {_db .Log .Debug ("\u0045R\u0052\u004f\u0052\u003a\u0020\u0025v",_ggfg );return nil ,_ggfg ;};var _dfe _b .StreamEncoder ;_dfe =_feg ;{_dfa :=_b .NewFlateEncoder ();_bdcf :=_b .NewMultiEncoder ();_bdcf .AddEncoder (_dfa );_bdcf .AddEncoder (_feg );_ffbd ,_dgae :=_bdcf .EncodeBytes (_cddd );if _dgae !=nil {return nil ,_dgae ;};if len (_ffbd )< len (_dgf ){_db .Log .Debug ("\u004d\u0075\u006c\u0074\u0069\u0020\u0065\u006e\u0063\u0020\u0069\u006d\u0070\u0072\u006f\u0076\u0065\u0073\u003a\u0020\u0025\u0064\u0020\u0074o\u0020\u0025\u0064\u0020\u0028o\u0072\u0069g\u0020\u0025\u0064\u0029",len (_dgf ),len (_ffbd ),len (_cfb .Stream ));_dgf =_ffbd ;_dfe =_bdcf ;};};_gga :=len (_cfb .Stream );if _gga < len (_dgf ){continue ;};_agfe :=&_b .PdfObjectStream {Stream :_dgf };_agfe .PdfObjectReference =_cfb .PdfObjectReference ;_agfe .PdfObjectDictionary =_b .MakeDict ();_agfe .Merge (_cfb .PdfObjectDictionary );_agfe .Merge (_dfe .MakeStreamDict ());_agfe .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_b .MakeInteger (int64 (len (_dgf ))));_adg [_cfb ]=_agfe ;_gbc [_ebb ].Stream =_agfe ;};_bbdd =make ([]_b .PdfObject ,len (objects ));copy (_bbdd ,objects );_ddaf (_bbdd ,_adg );return _bbdd ,nil ;};
+func (_dge *ImagePPI )Optimize (objects []_d .PdfObject )(_bbg []_d .PdfObject ,_bbeea error ){if _dge .ImageUpperPPI <=0{return objects ,nil ;};_cgag :=_ccd (objects );if len (_cgag )==0{return objects ,nil ;};_fegd :=make (map[_d .PdfObject ]struct{});for _ ,_ddag :=range _cgag {_fbg :=_ddag .Stream .PdfObjectDictionary .Get (_d .PdfObjectName ("\u0053\u004d\u0061s\u006b"));_fegd [_fbg ]=struct{}{};};_ffa :=make (map[*_d .PdfObjectStream ]*imageInfo );for _ ,_dcg :=range _cgag {_ffa [_dcg .Stream ]=_dcg ;};var _gdcd *_d .PdfObjectDictionary ;for _ ,_faf :=range objects {if _agbeg ,_cdd :=_d .GetDict (_faf );_gdcd ==nil &&_cdd {if _bac ,_gcec :=_d .GetName (_agbeg .Get (_d .PdfObjectName ("\u0054\u0079\u0070\u0065")));_gcec &&*_bac =="\u0043a\u0074\u0061\u006c\u006f\u0067"{_gdcd =_agbeg ;};};};if _gdcd ==nil {return objects ,nil ;};_caeaa ,_fgbc :=_d .GetDict (_gdcd .Get (_d .PdfObjectName ("\u0050\u0061\u0067e\u0073")));if !_fgbc {return objects ,nil ;};_fdgb ,_cgfc :=_d .GetArray (_caeaa .Get (_d .PdfObjectName ("\u004b\u0069\u0064\u0073")));if !_cgfc {return objects ,nil ;};_cfe :=make (map[string ]*imageInfo );for _ ,_fae :=range _fdgb .Elements (){_cafgg ,_gega :=_d .GetDict (_fae );if !_gega {continue ;};_bbf ,_dfdb :=_d .GetArray (_cafgg .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));if !_dfdb {continue ;};_badg ,_gfca :=_d .GetDict (_cafgg .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));if !_gfca {continue ;};_ggab ,_egce :=_d .GetDict (_badg .Get ("\u0058O\u0062\u006a\u0065\u0063\u0074"));if !_egce {continue ;};_gedc :=_ggab .Keys ();for _ ,_geec :=range _gedc {if _bdf ,_ddda :=_d .GetStream (_ggab .Get (_geec ));_ddda {if _begc ,_accd :=_ffa [_bdf ];_accd {_cfe [string (_geec )]=_begc ;};};};for _ ,_cafb :=range _bbf .Elements (){if _eecg ,_adc :=_d .GetStream (_cafb );_adc {_dca ,_eff :=_d .NewEncoderFromStream (_eecg );if _eff !=nil {return nil ,_eff ;};_febg ,_eff :=_dca .DecodeStream (_eecg );if _eff !=nil {return nil ,_eff ;};_bdbc :=_ge .NewContentStreamParser (string (_febg ));_bff ,_eff :=_bdbc .Parse ();if _eff !=nil {return nil ,_eff ;};_fecd ,_edc :=1.0,1.0;for _ ,_dgd :=range *_bff {if _dgd .Operand =="\u0051"{_fecd ,_edc =1.0,1.0;};if _dgd .Operand =="\u0063\u006d"&&len (_dgd .Params )==6{if _ggbe ,_abgb :=_d .GetFloatVal (_dgd .Params [0]);_abgb {_fecd =_fecd *_ggbe ;};if _aadb ,_cdgd :=_d .GetFloatVal (_dgd .Params [3]);_cdgd {_edc =_edc *_aadb ;};if _ead ,_ddca :=_d .GetIntVal (_dgd .Params [0]);_ddca {_fecd =_fecd *float64 (_ead );};if _fef ,_gffff :=_d .GetIntVal (_dgd .Params [3]);_gffff {_edc =_edc *float64 (_fef );};};if _dgd .Operand =="\u0044\u006f"&&len (_dgd .Params )==1{_ffde ,_aagb :=_d .GetName (_dgd .Params [0]);if !_aagb {continue ;};if _bce ,_cfaa :=_cfe [string (*_ffde )];_cfaa {_adb ,_eefa :=_fecd /72.0,_edc /72.0;_cge ,_bcef :=float64 (_bce .Width )/_adb ,float64 (_bce .Height )/_eefa ;if _adb ==0||_eefa ==0{_cge =72.0;_bcef =72.0;};_bce .PPI =_f .Max (_bce .PPI ,_cge );_bce .PPI =_f .Max (_bce .PPI ,_bcef );};};};};};};for _ ,_bede :=range _cgag {if _ ,_aaab :=_fegd [_bede .Stream ];_aaab {continue ;};if _bede .PPI <=_dge .ImageUpperPPI {continue ;};_cbag :=_dge .ImageUpperPPI /_bede .PPI ;if _fdd :=_fgace (_bede .Stream ,_cbag );_fdd !=nil {_dc .Log .Debug ("\u0045\u0072\u0072\u006f\u0072 \u0073\u0063\u0061\u006c\u0065\u0020\u0069\u006d\u0061\u0067\u0065\u0020\u006be\u0065\u0070\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u0069\u006d\u0061\u0067\u0065\u003a\u0020\u0025\u0073",_fdd );}else {if _gbg ,_cdbc :=_d .GetStream (_bede .Stream .PdfObjectDictionary .Get (_d .PdfObjectName ("\u0053\u004d\u0061s\u006b")));_cdbc {if _ffe :=_fgace (_gbg ,_cbag );_ffe !=nil {return nil ,_ffe ;};};};};return objects ,nil ;};
 
-// Options describes PDF optimization parameters.
-type Options struct{CombineDuplicateStreams bool ;CombineDuplicateDirectObjects bool ;ImageUpperPPI float64 ;ImageQuality int ;UseObjectStreams bool ;CombineIdenticalIndirectObjects bool ;CompressStreams bool ;CleanFonts bool ;SubsetFonts bool ;CleanContentstream bool ;};func _ebc (_bfff _b .PdfObject )[]content {if _bfff ==nil {return nil ;};_gge ,_ebcd :=_b .GetArray (_bfff );if !_ebcd {_db .Log .Debug ("\u0041\u006e\u006e\u006fts\u0020\u006e\u006f\u0074\u0020\u0061\u006e\u0020\u0061\u0072\u0072\u0061\u0079");return nil ;};var _bge []content ;for _ ,_gba :=range _gge .Elements (){_bbc ,_bfcd :=_b .GetDict (_gba );if !_bfcd {_db .Log .Debug ("I\u0067\u006e\u006f\u0072\u0069\u006eg\u0020\u006e\u006f\u006e\u002d\u0064i\u0063\u0074\u0020\u0065\u006c\u0065\u006de\u006e\u0074\u0020\u0069\u006e\u0020\u0041\u006e\u006e\u006ft\u0073");continue ;};_edf ,_bfcd :=_b .GetDict (_bbc .Get ("\u0041\u0050"));if !_bfcd {_db .Log .Debug ("\u004e\u006f\u0020\u0041P \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_ebg :=_b .TraceToDirectObject (_edf .Get ("\u004e"));if _ebg ==nil {_db .Log .Debug ("N\u006f\u0020\u004e\u0020en\u0074r\u0079\u0020\u002d\u0020\u0073k\u0069\u0070\u0070\u0069\u006e\u0067");continue ;};var _aegb *_b .PdfObjectStream ;switch _bgef :=_ebg .(type ){case *_b .PdfObjectDictionary :_ee ,_bffa :=_b .GetName (_bbc .Get ("\u0041\u0053"));if !_bffa {_db .Log .Debug ("\u004e\u006f\u0020\u0041S \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_aegb ,_bffa =_b .GetStream (_bgef .Get (*_ee ));if !_bffa {_db .Log .Debug ("\u0046o\u0072\u006d\u0020\u006eo\u0074\u0020\u0066\u006f\u0075n\u0064 \u002d \u0073\u006b\u0069\u0070\u0070\u0069\u006eg");continue ;};case *_b .PdfObjectStream :_aegb =_bgef ;};if _aegb ==nil {_db .Log .Debug ("\u0046\u006f\u0072m\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0028n\u0069\u006c\u0029\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069\u006e\u0067");continue ;};_cb ,_bab :=_bd .NewXObjectFormFromStream (_aegb );if _bab !=nil {_db .Log .Debug ("\u0045\u0072\u0072\u006f\u0072\u0020l\u006f\u0061\u0064\u0069\u006e\u0067\u0020\u0066\u006f\u0072\u006d\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_bab );continue ;};_bgd ,_bab :=_cb .GetContentStream ();if _bab !=nil {_db .Log .Debug ("E\u0072\u0072\u006f\u0072\u0020\u0064e\u0063\u006f\u0064\u0069\u006e\u0067\u0020\u0063\u006fn\u0074\u0065\u006et\u0073:\u0020\u0025\u0076",_bab );continue ;};_bge =append (_bge ,content {_dde :string (_bgd ),_ddec :_cb .Resources });};return _bge ;};
+// ImagePPI optimizes images by scaling images such that the PPI (pixels per inch) is never higher than ImageUpperPPI.
+// TODO(a5i): Add support for inline images.
+// It implements interface model.Optimizer.
+type ImagePPI struct{ImageUpperPPI float64 ;};type objectStructure struct{_egdb *_d .PdfObjectDictionary ;_daf *_d .PdfObjectDictionary ;_aae []*_d .PdfIndirectObject ;};func _bcd (_egb []_d .PdfObject ,_ffaa map[_d .PdfObject ]_d .PdfObject ){if _ffaa ==nil ||len (_ffaa )==0{return ;};for _dfga ,_ecdd :=range _egb {if _caeg ,_ffeb :=_ffaa [_ecdd ];_ffeb {_egb [_dfga ]=_caeg ;continue ;};_ffaa [_ecdd ]=_ecdd ;switch _ceed :=_ecdd .(type ){case *_d .PdfObjectArray :_bdbf :=make ([]_d .PdfObject ,_ceed .Len ());copy (_bdbf ,_ceed .Elements ());_bcd (_bdbf ,_ffaa );for _cccb ,_acbb :=range _bdbf {_ceed .Set (_cccb ,_acbb );};case *_d .PdfObjectStreams :_bcd (_ceed .Elements (),_ffaa );case *_d .PdfObjectStream :_fca :=[]_d .PdfObject {_ceed .PdfObjectDictionary };_bcd (_fca ,_ffaa );_ceed .PdfObjectDictionary =_fca [0].(*_d .PdfObjectDictionary );case *_d .PdfObjectDictionary :_dbb :=_ceed .Keys ();_feec :=make ([]_d .PdfObject ,len (_dbb ));for _aac ,_agdf :=range _dbb {_feec [_aac ]=_ceed .Get (_agdf );};_bcd (_feec ,_ffaa );for _fegc ,_ffcf :=range _dbb {_ceed .Set (_ffcf ,_feec [_fegc ]);};case *_d .PdfIndirectObject :_acd :=[]_d .PdfObject {_ceed .PdfObject };_bcd (_acd ,_ffaa );_ceed .PdfObject =_acd [0];};};};func _de (_bedb []_d .PdfObject )(_feab map[*_d .PdfObjectStream ]struct{},_bea error ){_feab =map[*_d .PdfObjectStream ]struct{}{};_beaf :=map[*_gf .PdfFont ]struct{}{};_eda :=_fdb (_bedb );for _ ,_eg :=range _eda ._aae {_daa ,_efd :=_d .GetDict (_eg .PdfObject );if !_efd {continue ;};_ggb ,_efd :=_d .GetDict (_daa .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));if !_efd {continue ;};_efg ,_ :=_fccf (_daa .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_fc ,_dg :=_gf .NewPdfPageResourcesFromDict (_ggb );if _dg !=nil {return nil ,_dg ;};_ebd :=[]content {{_gbe :_efg ,_fee :_fc }};_cfc :=_afc (_daa .Get ("\u0041\u006e\u006e\u006f\u0074\u0073"));if _cfc !=nil {_ebd =append (_ebd ,_cfc ...);};for _ ,_ac :=range _ebd {_ggc ,_eeb :=_abb .NewFromContents (_ac ._gbe ,_ac ._fee );if _eeb !=nil {return nil ,_eeb ;};_cgb ,_ ,_ ,_eeb :=_ggc .ExtractPageText ();if _eeb !=nil {return nil ,_eeb ;};for _ ,_fg :=range _cgb .Marks ().Elements (){if _fg .Font ==nil {continue ;};if _ ,_dbf :=_beaf [_fg .Font ];!_dbf {_beaf [_fg .Font ]=struct{}{};};};};};_agb :=map[*_d .PdfObjectStream ][]*_gf .PdfFont {};for _dfd :=range _beaf {_cdb :=_dfd .FontDescriptor ();if _cdb ==nil ||_cdb .FontFile2 ==nil {continue ;};_fcd ,_dfa :=_d .GetStream (_cdb .FontFile2 );if !_dfa {continue ;};_agb [_fcd ]=append (_agb [_fcd ],_dfd );};for _ae :=range _agb {var _egd []rune ;var _ff []_ec .GlyphIndex ;for _ ,_cfa :=range _agb [_ae ]{switch _eba :=_cfa .Encoder ().(type ){case *_ag .IdentityEncoder :_fgc :=_eba .RegisteredRunes ();_feabg :=make ([]_ec .GlyphIndex ,len (_fgc ));for _dfg ,_eaa :=range _fgc {_feabg [_dfg ]=_ec .GlyphIndex (_eaa );};_ff =append (_ff ,_feabg ...);case *_ag .TrueTypeFontEncoder :_dfc :=_eba .RegisteredRunes ();_egd =append (_egd ,_dfc ...);case _ag .SimpleEncoder :_ggbf :=_eba .Charcodes ();for _ ,_ad :=range _ggbf {_cgbf ,_fec :=_eba .CharcodeToRune (_ad );if !_fec {_dc .Log .Debug ("\u0043\u0068a\u0072\u0063\u006f\u0064\u0065\u003c\u002d\u003e\u0072\u0075\u006e\u0065\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064: \u0025\u0064",_ad );continue ;};_egd =append (_egd ,_cgbf );};};};_bea =_fgcg (_ae ,_egd ,_ff );if _bea !=nil {_dc .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020\u0073\u0075\u0062\u0073\u0065\u0074\u0074\u0069\u006eg\u0020f\u006f\u006e\u0074\u0020\u0073\u0074\u0072\u0065\u0061\u006d\u003a\u0020\u0025\u0076",_bea );return nil ,_bea ;};_feab [_ae ]=struct{}{};};return _feab ,nil ;};
+
+// Image optimizes images by rewrite images into JPEG format with quality equals to ImageQuality.
+// TODO(a5i): Add support for inline images.
+// It implements interface model.Optimizer.
+type Image struct{ImageQuality int ;};
+
+// Append appends optimizers to the chain.
+func (_gb *Chain )Append (optimizers ..._gf .Optimizer ){_gb ._bf =append (_gb ._bf ,optimizers ...)};func _ccd (_fgb []_d .PdfObject )[]*imageInfo {_gce :=_d .PdfObjectName ("\u0053u\u0062\u0074\u0079\u0070\u0065");_cce :=make (map[*_d .PdfObjectStream ]struct{});var _fbd error ;var _eec []*imageInfo ;for _ ,_agd :=range _fgb {_fed ,_bfg :=_d .GetStream (_agd );if !_bfg {continue ;};if _ ,_acc :=_cce [_fed ];_acc {continue ;};_cce [_fed ]=struct{}{};_gbdc :=_fed .PdfObjectDictionary .Get (_gce );_fgd ,_bfg :=_d .GetName (_gbdc );if !_bfg ||string (*_fgd )!="\u0049\u006d\u0061g\u0065"{continue ;};_cggf :=&imageInfo {BitsPerComponent :8,Stream :_fed };if _cggf .ColorSpace ,_fbd =_gf .DetermineColorspaceNameFromPdfObject (_fed .PdfObjectDictionary .Get ("\u0043\u006f\u006c\u006f\u0072\u0053\u0070\u0061\u0063\u0065"));_fbd !=nil {_dc .Log .Error ("\u0045\u0072\u0072\u006f\u0072\u0020\u0064\u0065\u0074\u0065r\u006d\u0069\u006e\u0065\u0020\u0063\u006fl\u006f\u0072\u0020\u0073\u0070\u0061\u0063\u0065\u0020\u0025\u0073",_fbd );continue ;};if _ggcd ,_bbee :=_d .GetIntVal (_fed .PdfObjectDictionary .Get ("\u0042\u0069t\u0073\u0050\u0065r\u0043\u006f\u006d\u0070\u006f\u006e\u0065\u006e\u0074"));_bbee {_cggf .BitsPerComponent =_ggcd ;};if _cee ,_egaa :=_d .GetIntVal (_fed .PdfObjectDictionary .Get ("\u0057\u0069\u0064t\u0068"));_egaa {_cggf .Width =_cee ;};if _gccb ,_ddb :=_d .GetIntVal (_fed .PdfObjectDictionary .Get ("\u0048\u0065\u0069\u0067\u0068\u0074"));_ddb {_cggf .Height =_gccb ;};switch _cggf .ColorSpace {case "\u0044e\u0076\u0069\u0063\u0065\u0052\u0047B":_cggf .ColorComponents =3;case "\u0044\u0065\u0076\u0069\u0063\u0065\u0047\u0072\u0061\u0079":_cggf .ColorComponents =1;default:_dc .Log .Warning ("\u004f\u0070\u0074\u0069\u006d\u0069\u007a\u0061t\u0069\u006f\u006e i\u0073\u0020\u006e\u006f\u0074\u0020s\u0075\u0070\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0066\u006f\u0072\u0020\u0063\u006fl\u006f\u0072\u0020\u0073\u0070\u0061\u0063\u0065 \u0025\u0073",_cggf .ColorSpace );continue ;};_eec =append (_eec ,_cggf );};return _eec ;};
 
 // ObjectStreams groups PDF objects to object streams.
 // It implements interface model.Optimizer.
-type ObjectStreams struct{};type imageInfo struct{ColorSpace _b .PdfObjectName ;BitsPerComponent int ;ColorComponents int ;Width int ;Height int ;Stream *_b .PdfObjectStream ;PPI float64 ;};
+type ObjectStreams struct{};type imageInfo struct{ColorSpace _d .PdfObjectName ;BitsPerComponent int ;ColorComponents int ;Width int ;Height int ;Stream *_d .PdfObjectStream ;PPI float64 ;};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_geg *CompressStreams )Optimize (objects []_b .PdfObject )(_bcg []_b .PdfObject ,_baba error ){_bcg =make ([]_b .PdfObject ,len (objects ));copy (_bcg ,objects );for _ ,_efg :=range objects {_cdaa ,_dga :=_b .GetStream (_efg );if !_dga {continue ;};if _gfb :=_cdaa .Get ("\u0046\u0069\u006c\u0074\u0065\u0072");_gfb !=nil {if _ ,_gdbf :=_b .GetName (_gfb );_gdbf {continue ;};if _fgb ,_afc :=_b .GetArray (_gfb );_afc &&_fgb .Len ()> 0{continue ;};};_gbad :=_b .NewFlateEncoder ();var _dcff []byte ;_dcff ,_baba =_gbad .EncodeBytes (_cdaa .Stream );if _baba !=nil {return _bcg ,_baba ;};_fab :=_gbad .MakeStreamDict ();if len (_dcff )+len (_fab .WriteString ())< len (_cdaa .Stream ){_cdaa .Stream =_dcff ;_cdaa .PdfObjectDictionary .Merge (_fab );_cdaa .PdfObjectDictionary .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_b .MakeInteger (int64 (len (_cdaa .Stream ))));};};return _bcg ,nil ;};
+func (_cgd *CombineIdenticalIndirectObjects )Optimize (objects []_d .PdfObject )(_ada []_d .PdfObject ,_cga error ){_dedg (objects );_ffc :=make (map[_d .PdfObject ]_d .PdfObject );_fgacc :=make (map[_d .PdfObject ]struct{});_egc :=make (map[string ][]*_d .PdfIndirectObject );for _ ,_fdg :=range objects {_egg ,_fdf :=_fdg .(*_d .PdfIndirectObject );if !_fdf {continue ;};if _aag ,_gfbg :=_egg .PdfObject .(*_d .PdfObjectDictionary );_gfbg {if _cbf ,_ffg :=_aag .Get ("\u0054\u0079\u0070\u0065").(*_d .PdfObjectName );_ffg &&*_cbf =="\u0050\u0061\u0067\u0065"{continue ;};_gbd :=_ab .New ();_gbd .Write ([]byte (_aag .WriteString ()));_ecag :=string (_gbd .Sum (nil ));_egc [_ecag ]=append (_egc [_ecag ],_egg );};};for _ ,_eee :=range _egc {if len (_eee )< 2{continue ;};_bbba :=_eee [0];for _egga :=1;_egga < len (_eee );_egga ++{_ebf :=_eee [_egga ];_ffc [_ebf ]=_bbba ;_fgacc [_ebf ]=struct{}{};};};_ada =make ([]_d .PdfObject ,0,len (objects )-len (_fgacc ));for _ ,_dac :=range objects {if _ ,_dedf :=_fgacc [_dac ];_dedf {continue ;};_ada =append (_ada ,_dac );};_bcd (_ada ,_ffc );return _ada ,nil ;};func _fgace (_dedfe *_d .PdfObjectStream ,_beg float64 )error {_abd ,_bgc :=_gf .NewXObjectImageFromStream (_dedfe );if _bgc !=nil {return _bgc ;};_ccdd ,_bgc :=_abd .ToImage ();if _bgc !=nil {return _bgc ;};_gfd ,_bgc :=_ccdd .ToGoImage ();if _bgc !=nil {return _bgc ;};_cafg :=int (_f .RoundToEven (float64 (_ccdd .Width )*_beg ));_bfb :=int (_f .RoundToEven (float64 (_ccdd .Height )*_beg ));_daed :=_e .Rect (0,0,_cafg ,_bfb );var _ebg _a .Image ;var _gdfg func (_e .Image )(*_gf .Image ,error );switch _abd .ColorSpace .String (){case "\u0044e\u0076\u0069\u0063\u0065\u0052\u0047B":_ebg =_e .NewRGBA (_daed );_gdfg =_gf .ImageHandling .NewImageFromGoImage ;case "\u0044\u0065\u0076\u0069\u0063\u0065\u0047\u0072\u0061\u0079":_ebg =_e .NewGray (_daed );_gdfg =_gf .ImageHandling .NewGrayImageFromGoImage ;default:return _b .Errorf ("\u006f\u0070\u0074\u0069\u006d\u0069\u007a\u0061t\u0069\u006f\u006e i\u0073\u0020\u006e\u006f\u0074\u0020s\u0075\u0070\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0066\u006f\u0072\u0020\u0063\u006fl\u006f\u0072\u0020\u0073\u0070\u0061\u0063\u0065 \u0025\u0073",_abd .ColorSpace .String ());};_a .CatmullRom .Scale (_ebg ,_ebg .Bounds (),_gfd ,_gfd .Bounds (),_a .Over ,&_a .Options {});if _ccdd ,_bgc =_gdfg (_ebg );_bgc !=nil {return _bgc ;};_cec :=_d .MakeDict ();_cec .Set ("\u0051u\u0061\u006c\u0069\u0074\u0079",_d .MakeInteger (100));_cec .Set ("\u0050r\u0065\u0064\u0069\u0063\u0074\u006fr",_d .MakeInteger (1));_abd .Filter .UpdateParams (_cec );if _bgc =_abd .SetImage (_ccdd ,nil );_bgc !=nil {return _bgc ;};_abd .ToPdfObject ();return nil ;};
 
 // CompressStreams compresses uncompressed streams.
 // It implements interface model.Optimizer.
 type CompressStreams struct{};
 
-// Optimize optimizes PDF objects to decrease PDF size.
-func (_aaac *CleanFonts )Optimize (objects []_b .PdfObject )(_acf []_b .PdfObject ,_bgc error ){var _bce map[*_b .PdfObjectStream ]struct{};if _aaac .Subset {var _bgcc error ;_bce ,_bgcc =_ge (objects );if _bgcc !=nil {return nil ,_bgcc ;};};for _ ,_beb :=range objects {_dab ,_abb :=_b .GetStream (_beb );if !_abb {continue ;};if _ ,_gcf :=_bce [_dab ];_gcf {continue ;};_fe ,_ed :=_b .NewEncoderFromStream (_dab );if _ed !=nil {_db .Log .Debug ("\u0045\u0052RO\u0052\u0020\u0067e\u0074\u0074\u0069\u006eg e\u006eco\u0064\u0065\u0072\u003a\u0020\u0025\u0076 -\u0020\u0069\u0067\u006e\u006f\u0072\u0069n\u0067",_ed );continue ;};_bed ,_ed :=_fe .DecodeStream (_dab );if _ed !=nil {_db .Log .Debug ("\u0044\u0065\u0063\u006f\u0064\u0069\u006e\u0067\u0020\u0065r\u0072\u006f\u0072\u0020\u003a\u0020\u0025v\u0020\u002d\u0020\u0069\u0067\u006e\u006f\u0072\u0069\u006e\u0067",_ed );continue ;};if len (_bed )< 4{continue ;};_egf :=string (_bed [:4]);if _egf =="\u004f\u0054\u0054\u004f"{continue ;};if _egf !="\u0000\u0001\u0000\u0000"&&_egf !="\u0074\u0072\u0075\u0065"{continue ;};_beg ,_ed :=_dg .Parse (_cd .NewReader (_bed ));if _ed !=nil {_db .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020P\u0061\u0072\u0073\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_ed );continue ;};_ed =_beg .Optimize ();if _ed !=nil {continue ;};var _bdc _cd .Buffer ;_ed =_beg .Write (&_bdc );if _ed !=nil {_db .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020W\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_ed );continue ;};if _bdc .Len ()> len (_bed ){_db .Log .Debug ("\u0052\u0065-\u0077\u0072\u0069\u0074\u0074\u0065\u006e\u0020\u0066\u006f\u006e\u0074\u0020\u0069\u0073\u0020\u006c\u0061\u0072\u0067\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u002d\u0020\u0073\u006b\u0069\u0070");continue ;};_fdb ,_ed :=_b .MakeStream (_bdc .Bytes (),_b .NewFlateEncoder ());if _ed !=nil {continue ;};*_dab =*_fdb ;_dab .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_b .MakeInteger (int64 (_bdc .Len ())));};return objects ,nil ;};
-
-// CleanFonts cleans up embedded fonts, reducing font sizes.
-type CleanFonts struct{
-
-// Subset embedded fonts if encountered (if true).
-// Otherwise attempts to reduce the font program.
-Subset bool ;};func _ge (_cc []_b .PdfObject )(_bca map[*_b .PdfObjectStream ]struct{},_bcb error ){_bca =map[*_b .PdfObjectStream ]struct{}{};_cee :=map[*_bd .PdfFont ]struct{}{};_agf :=_fbb (_cc );for _ ,_cdf :=range _agf ._fdeb {_fb ,_ea :=_b .GetDict (_cdf .PdfObject );if !_ea {continue ;};_bff ,_ea :=_b .GetDict (_fb .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));if !_ea {continue ;};_eab ,_ :=_ddafb (_fb .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_ceda ,_aed :=_bd .NewPdfPageResourcesFromDict (_bff );if _aed !=nil {return nil ,_aed ;};_gd :=[]content {{_dde :_eab ,_ddec :_ceda }};_aef :=_ebc (_fb .Get ("\u0041\u006e\u006e\u006f\u0074\u0073"));if _aef !=nil {_gd =append (_gd ,_aef ...);};for _ ,_dgc :=range _gd {_efa ,_bccd :=_cf .NewFromContents (_dgc ._dde ,_dgc ._ddec );if _bccd !=nil {return nil ,_bccd ;};_dae ,_ ,_ ,_bccd :=_efa .ExtractPageText ();if _bccd !=nil {return nil ,_bccd ;};for _ ,_fde :=range _dae .Marks ().Elements (){if _fde .Font ==nil {continue ;};if _ ,_gb :=_cee [_fde .Font ];!_gb {_cee [_fde .Font ]=struct{}{};};};};};_ddg :=map[*_b .PdfObjectStream ][]*_bd .PdfFont {};for _faa :=range _cee {_gcg :=_faa .FontDescriptor ();if _gcg ==nil ||_gcg .FontFile2 ==nil {continue ;};_ecb ,_ecf :=_b .GetStream (_gcg .FontFile2 );if !_ecf {continue ;};_ddg [_ecb ]=append (_ddg [_ecb ],_faa );};for _ffb :=range _ddg {var _aeg []rune ;var _bda []_dg .GlyphIndex ;for _ ,_dgb :=range _ddg [_ffb ]{switch _ga :=_dgb .Encoder ().(type ){case *_bad .IdentityEncoder :_gca :=_ga .RegisteredRunes ();_ggc :=make ([]_dg .GlyphIndex ,len (_gca ));for _dgbb ,_fgc :=range _gca {_ggc [_dgbb ]=_dg .GlyphIndex (_fgc );};_bda =append (_bda ,_ggc ...);case *_bad .TrueTypeFontEncoder :_bg :=_ga .RegisteredRunes ();_aeg =append (_aeg ,_bg ...);case _bad .SimpleEncoder :_bee :=_ga .Charcodes ();for _ ,_aaa :=range _bee {_fac ,_cca :=_ga .CharcodeToRune (_aaa );if !_cca {_db .Log .Debug ("\u0043\u0068a\u0072\u0063\u006f\u0064\u0065\u003c\u002d\u003e\u0072\u0075\u006e\u0065\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064: \u0025\u0064",_aaa );continue ;};_aeg =append (_aeg ,_fac );};};};_bcb =_fgcd (_ffb ,_aeg ,_bda );if _bcb !=nil {_db .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020\u0073\u0075\u0062\u0073\u0065\u0074\u0074\u0069\u006eg\u0020f\u006f\u006e\u0074\u0020\u0073\u0074\u0072\u0065\u0061\u006d\u003a\u0020\u0025\u0076",_bcb );return nil ,_bcb ;};_bca [_ffb ]=struct{}{};};return _bca ,nil ;};
+// Options describes PDF optimization parameters.
+type Options struct{CombineDuplicateStreams bool ;CombineDuplicateDirectObjects bool ;ImageUpperPPI float64 ;ImageQuality int ;UseObjectStreams bool ;CombineIdenticalIndirectObjects bool ;CompressStreams bool ;CleanFonts bool ;SubsetFonts bool ;CleanContentstream bool ;};func _afc (_eef _d .PdfObject )[]content {if _eef ==nil {return nil ;};_beb ,_ega :=_d .GetArray (_eef );if !_ega {_dc .Log .Debug ("\u0041\u006e\u006e\u006fts\u0020\u006e\u006f\u0074\u0020\u0061\u006e\u0020\u0061\u0072\u0072\u0061\u0079");return nil ;};var _bgdb []content ;for _ ,_cdgg :=range _beb .Elements (){_gfc ,_bd :=_d .GetDict (_cdgg );if !_bd {_dc .Log .Debug ("I\u0067\u006e\u006f\u0072\u0069\u006eg\u0020\u006e\u006f\u006e\u002d\u0064i\u0063\u0074\u0020\u0065\u006c\u0065\u006de\u006e\u0074\u0020\u0069\u006e\u0020\u0041\u006e\u006e\u006ft\u0073");continue ;};_ecf ,_bd :=_d .GetDict (_gfc .Get ("\u0041\u0050"));if !_bd {_dc .Log .Debug ("\u004e\u006f\u0020\u0041P \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_aaba :=_d .TraceToDirectObject (_ecf .Get ("\u004e"));if _aaba ==nil {_dc .Log .Debug ("N\u006f\u0020\u004e\u0020en\u0074r\u0079\u0020\u002d\u0020\u0073k\u0069\u0070\u0070\u0069\u006e\u0067");continue ;};var _aeb *_d .PdfObjectStream ;switch _dec :=_aaba .(type ){case *_d .PdfObjectDictionary :_bgg ,_aaa :=_d .GetName (_gfc .Get ("\u0041\u0053"));if !_aaa {_dc .Log .Debug ("\u004e\u006f\u0020\u0041S \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_aeb ,_aaa =_d .GetStream (_dec .Get (*_bgg ));if !_aaa {_dc .Log .Debug ("\u0046o\u0072\u006d\u0020\u006eo\u0074\u0020\u0066\u006f\u0075n\u0064 \u002d \u0073\u006b\u0069\u0070\u0070\u0069\u006eg");continue ;};case *_d .PdfObjectStream :_aeb =_dec ;};if _aeb ==nil {_dc .Log .Debug ("\u0046\u006f\u0072m\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0028n\u0069\u006c\u0029\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069\u006e\u0067");continue ;};_cba ,_aaf :=_gf .NewXObjectFormFromStream (_aeb );if _aaf !=nil {_dc .Log .Debug ("\u0045\u0072\u0072\u006f\u0072\u0020l\u006f\u0061\u0064\u0069\u006e\u0067\u0020\u0066\u006f\u0072\u006d\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_aaf );continue ;};_gee ,_aaf :=_cba .GetContentStream ();if _aaf !=nil {_dc .Log .Debug ("E\u0072\u0072\u006f\u0072\u0020\u0064e\u0063\u006f\u0064\u0069\u006e\u0067\u0020\u0063\u006fn\u0074\u0065\u006et\u0073:\u0020\u0025\u0076",_aaf );continue ;};_bgdb =append (_bgdb ,content {_gbe :string (_gee ),_fee :_cba .Resources });};return _bgdb ;};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_gcc *CombineDuplicateDirectObjects )Optimize (objects []_b .PdfObject )(_deg []_b .PdfObject ,_fge error ){_bbca (objects );_beed :=make (map[string ][]*_b .PdfObjectDictionary );var _fceb func (_bdf *_b .PdfObjectDictionary );_fceb =func (_dad *_b .PdfObjectDictionary ){for _ ,_cgaa :=range _dad .Keys (){_dabd :=_dad .Get (_cgaa );if _fff ,_cgb :=_dabd .(*_b .PdfObjectDictionary );_cgb {_caea :=_d .New ();_caea .Write ([]byte (_fff .WriteString ()));_ecg :=string (_caea .Sum (nil ));_beed [_ecg ]=append (_beed [_ecg ],_fff );_fceb (_fff );};};};for _ ,_gee :=range objects {_bbe ,_acc :=_gee .(*_b .PdfIndirectObject );if !_acc {continue ;};if _fgg ,_dfc :=_bbe .PdfObject .(*_b .PdfObjectDictionary );_dfc {_fceb (_fgg );};};_cdff :=make ([]_b .PdfObject ,0,len (_beed ));_bgb :=make (map[_b .PdfObject ]_b .PdfObject );for _ ,_bccc :=range _beed {if len (_bccc )< 2{continue ;};_aceg :=_b .MakeDict ();_aceg .Merge (_bccc [0]);_acfg :=_b .MakeIndirectObject (_aceg );_cdff =append (_cdff ,_acfg );for _cafa :=0;_cafa < len (_bccc );_cafa ++{_caff :=_bccc [_cafa ];_bgb [_caff ]=_acfg ;};};_deg =make ([]_b .PdfObject ,len (objects ));copy (_deg ,objects );_deg =append (_cdff ,_deg ...);_ddaf (_deg ,_bgb );return _deg ,nil ;};
-
-// New creates a optimizers chain from options.
-func New (options Options )*Chain {_ddgb :=new (Chain );if options .CleanFonts ||options .SubsetFonts {_ddgb .Append (&CleanFonts {Subset :options .SubsetFonts });};if options .CleanContentstream {_ddgb .Append (new (CleanContentstream ));};if options .ImageUpperPPI > 0{_cff :=new (ImagePPI );_cff .ImageUpperPPI =options .ImageUpperPPI ;_ddgb .Append (_cff );};if options .ImageQuality > 0{_abab :=new (Image );_abab .ImageQuality =options .ImageQuality ;_ddgb .Append (_abab );};if options .CombineDuplicateDirectObjects {_ddgb .Append (new (CombineDuplicateDirectObjects ));};if options .CombineDuplicateStreams {_ddgb .Append (new (CombineDuplicateStreams ));};if options .CombineIdenticalIndirectObjects {_ddgb .Append (new (CombineIdenticalIndirectObjects ));};if options .UseObjectStreams {_ddgb .Append (new (ObjectStreams ));};if options .CompressStreams {_ddgb .Append (new (CompressStreams ));};return _ddgb ;};
-
-// Optimize optimizes PDF objects to decrease PDF size.
-func (_cbb *ImagePPI )Optimize (objects []_b .PdfObject )(_becb []_b .PdfObject ,_fcc error ){if _cbb .ImageUpperPPI <=0{return objects ,nil ;};_dec :=_agg (objects );if len (_dec )==0{return objects ,nil ;};_bebd :=make (map[_b .PdfObject ]struct{});for _ ,_adc :=range _dec {_ffge :=_adc .Stream .PdfObjectDictionary .Get (_b .PdfObjectName ("\u0053\u004d\u0061s\u006b"));_bebd [_ffge ]=struct{}{};};_fddb :=make (map[*_b .PdfObjectStream ]*imageInfo );for _ ,_dbfa :=range _dec {_fddb [_dbfa .Stream ]=_dbfa ;};var _cbf *_b .PdfObjectDictionary ;for _ ,_aba :=range objects {if _bccef ,_ggg :=_b .GetDict (_aba );_cbf ==nil &&_ggg {if _bae ,_ggcc :=_b .GetName (_bccef .Get (_b .PdfObjectName ("\u0054\u0079\u0070\u0065")));_ggcc &&*_bae =="\u0043a\u0074\u0061\u006c\u006f\u0067"{_cbf =_bccef ;};};};if _cbf ==nil {return objects ,nil ;};_fbg ,_gbg :=_b .GetDict (_cbf .Get (_b .PdfObjectName ("\u0050\u0061\u0067e\u0073")));if !_gbg {return objects ,nil ;};_ddgg ,_acfd :=_b .GetArray (_fbg .Get (_b .PdfObjectName ("\u004b\u0069\u0064\u0073")));if !_acfd {return objects ,nil ;};_fddg :=make (map[string ]*imageInfo );for _ ,_bgf :=range _ddgg .Elements (){_fda ,_ecc :=_b .GetDict (_bgf );if !_ecc {continue ;};_bcge ,_fcfa :=_b .GetArray (_fda .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));if !_fcfa {continue ;};_dbce ,_edfg :=_b .GetDict (_fda .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));if !_edfg {continue ;};_dca ,_daa :=_b .GetDict (_dbce .Get ("\u0058O\u0062\u006a\u0065\u0063\u0074"));if !_daa {continue ;};_fgeb :=_dca .Keys ();for _ ,_ddb :=range _fgeb {if _gbd ,_ddbb :=_b .GetStream (_dca .Get (_ddb ));_ddbb {if _gff ,_ada :=_fddb [_gbd ];_ada {_fddg [string (_ddb )]=_gff ;};};};for _ ,_bag :=range _bcge .Elements (){if _bgdc ,_fddd :=_b .GetStream (_bag );_fddd {_ebca ,_fcd :=_b .NewEncoderFromStream (_bgdc );if _fcd !=nil {return nil ,_fcd ;};_ccg ,_fcd :=_ebca .DecodeStream (_bgdc );if _fcd !=nil {return nil ,_fcd ;};_fbc :=_ca .NewContentStreamParser (string (_ccg ));_bccdb ,_fcd :=_fbc .Parse ();if _fcd !=nil {return nil ,_fcd ;};_eea ,_acfc :=1.0,1.0;for _ ,_aga :=range *_bccdb {if _aga .Operand =="\u0051"{_eea ,_acfc =1.0,1.0;};if _aga .Operand =="\u0063\u006d"&&len (_aga .Params )==6{if _agfc ,_bfa :=_b .GetFloatVal (_aga .Params [0]);_bfa {_eea =_eea *_agfc ;};if _dbfab ,_abf :=_b .GetFloatVal (_aga .Params [3]);_abf {_acfc =_acfc *_dbfab ;};if _cbc ,_aag :=_b .GetIntVal (_aga .Params [0]);_aag {_eea =_eea *float64 (_cbc );};if _fec ,_cbe :=_b .GetIntVal (_aga .Params [3]);_cbe {_acfc =_acfc *float64 (_fec );};};if _aga .Operand =="\u0044\u006f"&&len (_aga .Params )==1{_eead ,_gbf :=_b .GetName (_aga .Params [0]);if !_gbf {continue ;};if _cfef ,_ecfg :=_fddg [string (*_eead )];_ecfg {_gfc ,_gce :=_eea /72.0,_acfc /72.0;_acaa ,_ddce :=float64 (_cfef .Width )/_gfc ,float64 (_cfef .Height )/_gce ;if _gfc ==0||_gce ==0{_acaa =72.0;_ddce =72.0;};_cfef .PPI =_ba .Max (_cfef .PPI ,_acaa );_cfef .PPI =_ba .Max (_cfef .PPI ,_ddce );};};};};};};for _ ,_bdcb :=range _dec {if _ ,_cbfe :=_bebd [_bdcb .Stream ];_cbfe {continue ;};if _bdcb .PPI <=_cbb .ImageUpperPPI {continue ;};_adf :=_cbb .ImageUpperPPI /_bdcb .PPI ;if _caffe :=_dfb (_bdcb .Stream ,_adf );_caffe !=nil {_db .Log .Debug ("\u0045\u0072\u0072\u006f\u0072 \u0073\u0063\u0061\u006c\u0065\u0020\u0069\u006d\u0061\u0067\u0065\u0020\u006be\u0065\u0070\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u0069\u006d\u0061\u0067\u0065\u003a\u0020\u0025\u0073",_caffe );}else {if _bdg ,_gfg :=_b .GetStream (_bdcb .Stream .PdfObjectDictionary .Get (_b .PdfObjectName ("\u0053\u004d\u0061s\u006b")));_gfg {if _cbbf :=_dfb (_bdg ,_adf );_cbbf !=nil {return nil ,_cbbf ;};};};};return objects ,nil ;};func _eb (_ac *_b .PdfObjectStream )error {_def ,_cfc :=_b .DecodeStream (_ac );if _cfc !=nil {return _cfc ;};_af :=_ca .NewContentStreamParser (string (_def ));_df ,_cfc :=_af .Parse ();if _cfc !=nil {return _cfc ;};_df =_dc (_df );_da :=_df .Bytes ();if len (_da )>=len (_def ){return nil ;};_bc ,_cfc :=_b .MakeStream (_df .Bytes (),_b .NewFlateEncoder ());if _cfc !=nil {return _cfc ;};_ac .Stream =_bc .Stream ;_ac .Merge (_bc .PdfObjectDictionary );return nil ;};
+func (_gcee *ObjectStreams )Optimize (objects []_d .PdfObject )(_gcbb []_d .PdfObject ,_fefc error ){_eggf :=&_d .PdfObjectStreams {};_ffce :=make ([]_d .PdfObject ,0,len (objects ));for _ ,_gag :=range objects {if _gfeg ,_bdef :=_gag .(*_d .PdfIndirectObject );_bdef &&_gfeg .GenerationNumber ==0{_eggf .Append (_gag );}else {_ffce =append (_ffce ,_gag );};};if _eggf .Len ()==0{return _ffce ,nil ;};_gcbb =make ([]_d .PdfObject ,0,len (_ffce )+_eggf .Len ()+1);if _eggf .Len ()> 1{_gcbb =append (_gcbb ,_eggf );};_gcbb =append (_gcbb ,_eggf .Elements ()...);_gcbb =append (_gcbb ,_ffce ...);return _gcbb ,nil ;};
 
 // CombineIdenticalIndirectObjects combines identical indirect objects.
 // It implements interface model.Optimizer.
 type CombineIdenticalIndirectObjects struct{};
 
-// Chain allows to use sequence of optimizers.
+// CombineDuplicateDirectObjects combines duplicated direct objects by its data hash.
 // It implements interface model.Optimizer.
-type Chain struct{_fd []_bd .Optimizer };
-
-// Image optimizes images by rewrite images into JPEG format with quality equals to ImageQuality.
-// TODO(a5i): Add support for inline images.
-// It implements interface model.Optimizer.
-type Image struct{ImageQuality int ;};func _ddaf (_aedg []_b .PdfObject ,_bdaa map[_b .PdfObject ]_b .PdfObject ){if _bdaa ==nil ||len (_bdaa )==0{return ;};for _adgg ,_bdcff :=range _aedg {if _ged ,_cdb :=_bdaa [_bdcff ];_cdb {_aedg [_adgg ]=_ged ;continue ;};_bdaa [_bdcff ]=_bdcff ;switch _ede :=_bdcff .(type ){case *_b .PdfObjectArray :_cad :=make ([]_b .PdfObject ,_ede .Len ());copy (_cad ,_ede .Elements ());_ddaf (_cad ,_bdaa );for _abe ,_faabe :=range _cad {_ede .Set (_abe ,_faabe );};case *_b .PdfObjectStreams :_ddaf (_ede .Elements (),_bdaa );case *_b .PdfObjectStream :_dcd :=[]_b .PdfObject {_ede .PdfObjectDictionary };_ddaf (_dcd ,_bdaa );_ede .PdfObjectDictionary =_dcd [0].(*_b .PdfObjectDictionary );case *_b .PdfObjectDictionary :_ece :=_ede .Keys ();_cgbb :=make ([]_b .PdfObject ,len (_ece ));for _fdga ,_gae :=range _ece {_cgbb [_fdga ]=_ede .Get (_gae );};_ddaf (_cgbb ,_bdaa );for _gddd ,_cdbb :=range _ece {_ede .Set (_cdbb ,_cgbb [_gddd ]);};case *_b .PdfIndirectObject :_bbb :=[]_b .PdfObject {_ede .PdfObject };_ddaf (_bbb ,_bdaa );_ede .PdfObject =_bbb [0];};};};func _dfb (_aefd *_b .PdfObjectStream ,_gcbe float64 )error {_ggb ,_fgbb :=_bd .NewXObjectImageFromStream (_aefd );if _fgbb !=nil {return _fgbb ;};_dee ,_fgbb :=_ggb .ToImage ();if _fgbb !=nil {return _fgbb ;};_bbcc ,_fgbb :=_dee .ToGoImage ();if _fgbb !=nil {return _fgbb ;};_dea :=int (_ba .RoundToEven (float64 (_dee .Width )*_gcbe ));_bfce :=int (_ba .RoundToEven (float64 (_dee .Height )*_gcbe ));_dgfc :=_f .Rect (0,0,_dea ,_bfce );var _fgce _a .Image ;var _bcgg func (_f .Image )(*_bd .Image ,error );switch _ggb .ColorSpace .String (){case "\u0044e\u0076\u0069\u0063\u0065\u0052\u0047B":_fgce =_f .NewRGBA (_dgfc );_bcgg =_bd .ImageHandling .NewImageFromGoImage ;case "\u0044\u0065\u0076\u0069\u0063\u0065\u0047\u0072\u0061\u0079":_fgce =_f .NewGray (_dgfc );_bcgg =_bd .ImageHandling .NewGrayImageFromGoImage ;default:return _bf .Errorf ("\u006f\u0070\u0074\u0069\u006d\u0069\u007a\u0061t\u0069\u006f\u006e i\u0073\u0020\u006e\u006f\u0074\u0020s\u0075\u0070\u0070\u006f\u0072\u0074\u0065\u0064\u0020\u0066\u006f\u0072\u0020\u0063\u006fl\u006f\u0072\u0020\u0073\u0070\u0061\u0063\u0065 \u0025\u0073",_ggb .ColorSpace .String ());};_a .CatmullRom .Scale (_fgce ,_fgce .Bounds (),_bbcc ,_bbcc .Bounds (),_a .Over ,&_a .Options {});if _dee ,_fgbb =_bcgg (_fgce );_fgbb !=nil {return _fgbb ;};_abd :=_b .MakeDict ();_abd .Set ("\u0051u\u0061\u006c\u0069\u0074\u0079",_b .MakeInteger (100));_abd .Set ("\u0050r\u0065\u0064\u0069\u0063\u0074\u006fr",_b .MakeInteger (1));_ggb .Filter .UpdateParams (_abd );if _fgbb =_ggb .SetImage (_dee ,nil );_fgbb !=nil {return _fgbb ;};_ggb .ToPdfObject ();return nil ;};
+type CombineDuplicateDirectObjects struct{};func _fdb (_dgde []_d .PdfObject )objectStructure {_baa :=objectStructure {};_gfa :=false ;for _ ,_gdb :=range _dgde {switch _eacf :=_gdb .(type ){case *_d .PdfIndirectObject :_bgag ,_fbfd :=_d .GetDict (_eacf );if !_fbfd {continue ;};_dagg ,_fbfd :=_d .GetName (_bgag .Get ("\u0054\u0079\u0070\u0065"));if !_fbfd {continue ;};switch _dagg .String (){case "\u0043a\u0074\u0061\u006c\u006f\u0067":_baa ._egdb =_bgag ;_gfa =true ;};};if _gfa {break ;};};if !_gfa {return _baa ;};_cgab ,_dfeg :=_d .GetDict (_baa ._egdb .Get ("\u0050\u0061\u0067e\u0073"));if !_dfeg {return _baa ;};_baa ._daf =_cgab ;_efcc ,_dfeg :=_d .GetArray (_cgab .Get ("\u004b\u0069\u0064\u0073"));if !_dfeg {return _baa ;};for _ ,_cbd :=range _efcc .Elements (){_aacc ,_bdcc :=_d .GetIndirect (_cbd );if !_bdcc {break ;};_baa ._aae =append (_baa ._aae ,_aacc );};return _baa ;};func _fe (_da *_d .PdfObjectStream )error {_cd ,_ea :=_d .DecodeStream (_da );if _ea !=nil {return _ea ;};_ecd :=_ge .NewContentStreamParser (string (_cd ));_cc ,_ea :=_ecd .Parse ();if _ea !=nil {return _ea ;};_cc =_db (_cc );_gbce :=_cc .Bytes ();if len (_gbce )>=len (_cd ){return nil ;};_eac ,_ea :=_d .MakeStream (_cc .Bytes (),_d .NewFlateEncoder ());if _ea !=nil {return _ea ;};_da .Stream =_eac .Stream ;_da .Merge (_eac .PdfObjectDictionary );return nil ;};
 
 // Optimize optimizes PDF objects to decrease PDF size.
-func (_ae *CleanContentstream )Optimize (objects []_b .PdfObject )(_aea []_b .PdfObject ,_dbf error ){_caf :=map[*_b .PdfObjectStream ]struct{}{};var _dd []*_b .PdfObjectStream ;_fc :=func (_fg *_b .PdfObjectStream ){if _ ,_ag :=_caf [_fg ];!_ag {_caf [_fg ]=struct{}{};_dd =append (_dd ,_fg );};};for _ ,_gc :=range objects {switch _ce :=_gc .(type ){case *_b .PdfIndirectObject :switch _cfg :=_ce .PdfObject .(type ){case *_b .PdfObjectDictionary :if _gg ,_fdg :=_b .GetName (_cfg .Get ("\u0054\u0079\u0070\u0065"));!_fdg ||_gg .String ()!="\u0050\u0061\u0067\u0065"{continue ;};if _bfg ,_ggf :=_b .GetStream (_cfg .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_ggf {_fc (_bfg );}else if _dff ,_ad :=_b .GetArray (_cfg .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_ad {for _ ,_bded :=range _dff .Elements (){if _dbg ,_cga :=_b .GetStream (_bded );_cga {_fc (_dbg );};};};};case *_b .PdfObjectStream :if _ced ,_eg :=_b .GetName (_ce .Get ("\u0054\u0079\u0070\u0065"));!_eg ||_ced .String ()!="\u0058O\u0062\u006a\u0065\u0063\u0074"{continue ;};if _bcc ,_ec :=_b .GetName (_ce .Get ("\u0053u\u0062\u0074\u0079\u0070\u0065"));!_ec ||_bcc .String ()!="\u0046\u006f\u0072\u006d"{continue ;};_fc (_ce );};};for _ ,_be :=range _dd {_dbf =_eb (_be );if _dbf !=nil {return nil ,_dbf ;};};return objects ,nil ;};func _bbca (_gfgf []_b .PdfObject ){for _bedf ,_geec :=range _gfgf {switch _cac :=_geec .(type ){case *_b .PdfIndirectObject :_cac .ObjectNumber =int64 (_bedf +1);_cac .GenerationNumber =0;case *_b .PdfObjectStream :_cac .ObjectNumber =int64 (_bedf +1);_cac .GenerationNumber =0;case *_b .PdfObjectStreams :_cac .ObjectNumber =int64 (_bedf +1);_cac .GenerationNumber =0;};};};func _fbb (_edgf []_b .PdfObject )objectStructure {_gfa :=objectStructure {};_ade :=false ;for _ ,_bea :=range _edgf {switch _fgbc :=_bea .(type ){case *_b .PdfIndirectObject :_cgbf ,_eaec :=_b .GetDict (_fgbc );if !_eaec {continue ;};_cddg ,_eaec :=_b .GetName (_cgbf .Get ("\u0054\u0079\u0070\u0065"));if !_eaec {continue ;};switch _cddg .String (){case "\u0043a\u0074\u0061\u006c\u006f\u0067":_gfa ._gfbb =_cgbf ;_ade =true ;};};if _ade {break ;};};if !_ade {return _gfa ;};_efde ,_bcee :=_b .GetDict (_gfa ._gfbb .Get ("\u0050\u0061\u0067e\u0073"));if !_bcee {return _gfa ;};_gfa ._bbff =_efde ;_gdea ,_bcee :=_b .GetArray (_efde .Get ("\u004b\u0069\u0064\u0073"));if !_bcee {return _gfa ;};for _ ,_eaa :=range _gdea .Elements (){_fffd ,_ggfgg :=_b .GetIndirect (_eaa );if !_ggfgg {break ;};_gfa ._fdeb =append (_gfa ._fdeb ,_fffd );};return _gfa ;};func _dc (_cda *_ca .ContentStreamOperations )*_ca .ContentStreamOperations {if _cda ==nil {return nil ;};_de :=_ca .ContentStreamOperations {};for _ ,_bfc :=range *_cda {switch _bfc .Operand {case "\u0042\u0044\u0043","\u0042\u004d\u0043","\u0045\u004d\u0043":continue ;case "\u0054\u006d":if len (_bfc .Params )==6{if _ff ,_g :=_b .GetNumbersAsFloat (_bfc .Params );_g ==nil {if _ff [0]==1&&_ff [1]==0&&_ff [2]==0&&_ff [3]==1{_bfc =&_ca .ContentStreamOperation {Params :[]_b .PdfObject {_bfc .Params [4],_bfc .Params [5]},Operand :"\u0054\u0064"};};};};};_de =append (_de ,_bfc );};return &_de ;};
+func (_cbbg *Image )Optimize (objects []_d .PdfObject )(_fde []_d .PdfObject ,_bfe error ){if _cbbg .ImageQuality <=0{return objects ,nil ;};_cbfg :=_ccd (objects );if len (_cbfg )==0{return objects ,nil ;};_ecdf :=make (map[_d .PdfObject ]_d .PdfObject );_gda :=make (map[_d .PdfObject ]struct{});for _ ,_efde :=range _cbfg {_afg :=_efde .Stream .PdfObjectDictionary .Get (_d .PdfObjectName ("\u0053\u004d\u0061s\u006b"));_gda [_afg ]=struct{}{};};for _efec ,_acaa :=range _cbfg {_ceba :=_acaa .Stream ;if _ ,_bdb :=_gda [_ceba ];_bdb {continue ;};_cdga ,_afb :=_d .NewEncoderFromStream (_ceba );if _afb !=nil {_dc .Log .Warning ("\u0045\u0072\u0072\u006f\u0072 \u0067\u0065\u0074\u0020\u0065\u006e\u0063\u006f\u0064\u0065\u0072\u0020\u0066o\u0072\u0020\u0074\u0068\u0065\u0020\u0069\u006d\u0061\u0067\u0065\u0020\u0073\u0074\u0072\u0065\u0061\u006d\u0020\u0025\u0073");continue ;};_cfca ,_afb :=_cdga .DecodeStream (_ceba );if _afb !=nil {_dc .Log .Warning ("\u0045\u0072\u0072\u006f\u0072\u0020\u0064\u0065\u0063\u006f\u0064\u0065\u0020\u0074\u0068e\u0020i\u006d\u0061\u0067\u0065\u0020\u0073\u0074\u0072\u0065\u0061\u006d\u0020\u0025\u0073");continue ;};_ced :=_d .NewDCTEncoder ();_ced .ColorComponents =_acaa .ColorComponents ;_ced .Quality =_cbbg .ImageQuality ;_ced .BitsPerComponent =_acaa .BitsPerComponent ;_ced .Width =_acaa .Width ;_ced .Height =_acaa .Height ;_fgf ,_afb :=_ced .EncodeBytes (_cfca );if _afb !=nil {_dc .Log .Debug ("\u0045R\u0052\u004f\u0052\u003a\u0020\u0025v",_afb );return nil ,_afb ;};var _abba _d .StreamEncoder ;_abba =_ced ;{_gfbd :=_d .NewFlateEncoder ();_cggfc :=_d .NewMultiEncoder ();_cggfc .AddEncoder (_gfbd );_cggfc .AddEncoder (_ced );_gdf ,_gde :=_cggfc .EncodeBytes (_cfca );if _gde !=nil {return nil ,_gde ;};if len (_gdf )< len (_fgf ){_dc .Log .Debug ("\u004d\u0075\u006c\u0074\u0069\u0020\u0065\u006e\u0063\u0020\u0069\u006d\u0070\u0072\u006f\u0076\u0065\u0073\u003a\u0020\u0025\u0064\u0020\u0074o\u0020\u0025\u0064\u0020\u0028o\u0072\u0069g\u0020\u0025\u0064\u0029",len (_fgf ),len (_gdf ),len (_ceba .Stream ));_fgf =_gdf ;_abba =_cggfc ;};};_cea :=len (_ceba .Stream );if _cea < len (_fgf ){continue ;};_ggbd :=&_d .PdfObjectStream {Stream :_fgf };_ggbd .PdfObjectReference =_ceba .PdfObjectReference ;_ggbd .PdfObjectDictionary =_d .MakeDict ();_ggbd .Merge (_ceba .PdfObjectDictionary );_ggbd .Merge (_abba .MakeStreamDict ());_ggbd .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_d .MakeInteger (int64 (len (_fgf ))));_ecdf [_ceba ]=_ggbd ;_cbfg [_efec ].Stream =_ggbd ;};_fde =make ([]_d .PdfObject ,len (objects ));copy (_fde ,objects );_bcd (_fde ,_ecdf );return _fde ,nil ;};
+
+// Optimize optimizes PDF objects to decrease PDF size.
+func (_abcf *CombineDuplicateStreams )Optimize (objects []_d .PdfObject )(_ded []_d .PdfObject ,_aebd error ){_ecc :=make (map[_d .PdfObject ]_d .PdfObject );_badf :=make (map[_d .PdfObject ]struct{});_acb :=make (map[string ][]*_d .PdfObjectStream );for _ ,_cbe :=range objects {if _aaaf ,_caea :=_cbe .(*_d .PdfObjectStream );_caea {_gfff :=_ab .New ();_gfff .Write ([]byte (_aaaf .Stream ));_cgg :=string (_gfff .Sum (nil ));_acb [_cgg ]=append (_acb [_cgg ],_aaaf );};};for _ ,_fdc :=range _acb {if len (_fdc )< 2{continue ;};_aeba :=_fdc [0];for _edab :=1;_edab < len (_fdc );_edab ++{_agf :=_fdc [_edab ];_ecc [_agf ]=_aeba ;_badf [_agf ]=struct{}{};};};_ded =make ([]_d .PdfObject ,0,len (objects )-len (_badf ));for _ ,_cef :=range objects {if _ ,_cbb :=_badf [_cef ];_cbb {continue ;};_ded =append (_ded ,_cef );};_bcd (_ded ,_ecc );return _ded ,nil ;};
+
+// Optimize optimizes PDF objects to decrease PDF size.
+func (_bdc *CombineDuplicateDirectObjects )Optimize (objects []_d .PdfObject )(_eca []_d .PdfObject ,_abf error ){_dedg (objects );_cgfa :=make (map[string ][]*_d .PdfObjectDictionary );var _age func (_aabc *_d .PdfObjectDictionary );_age =func (_dbc *_d .PdfObjectDictionary ){for _ ,_dag :=range _dbc .Keys (){_bbe :=_dbc .Get (_dag );if _bge ,_ffd :=_bbe .(*_d .PdfObjectDictionary );_ffd {_caf :=_ab .New ();_caf .Write ([]byte (_bge .WriteString ()));_cdfe :=string (_caf .Sum (nil ));_cgfa [_cdfe ]=append (_cgfa [_cdfe ],_bge );_age (_bge );};};};for _ ,_aed :=range objects {_bcg ,_ddg :=_aed .(*_d .PdfIndirectObject );if !_ddg {continue ;};if _abbb ,_gcb :=_bcg .PdfObject .(*_d .PdfObjectDictionary );_gcb {_age (_abbb );};};_ceb :=make ([]_d .PdfObject ,0,len (_cgfa ));_ddc :=make (map[_d .PdfObject ]_d .PdfObject );for _ ,_aabcc :=range _cgfa {if len (_aabcc )< 2{continue ;};_fd :=_d .MakeDict ();_fd .Merge (_aabcc [0]);_fda :=_d .MakeIndirectObject (_fd );_ceb =append (_ceb ,_fda );for _dae :=0;_dae < len (_aabcc );_dae ++{_bdg :=_aabcc [_dae ];_ddc [_bdg ]=_fda ;};};_eca =make ([]_d .PdfObject ,len (objects ));copy (_eca ,objects );_eca =append (_ceb ,_eca ...);_bcd (_eca ,_ddc );return _eca ,nil ;};

model/sighandler/sighandler.go

@@ -10,64 +10,43 @@
 // terms that can be accessed at https://unidoc.io/eula/
 
 // Package sighandler implements digital signature handlers for PDF signature validation and signing.
-package sighandler ;import (_f "bytes";_ff "crypto";_gf "crypto/rand";_ae "crypto/rsa";_gc "crypto/x509";_dc "crypto/x509/pkix";_b "encoding/asn1";_g "errors";_dg "fmt";_cd "github.com/unidoc/pkcs7";_gca "github.com/unidoc/timestamp";_ba "github.com/unidoc/unipdf/v3/core";_da "github.com/unidoc/unipdf/v3/model";_de "hash";_c "io";_a "io/ioutil";_eg "net/http";_d "time";);type adobePKCS7Detached struct{_fg *_ae .PrivateKey ;_fd *_gc .Certificate ;_ca bool ;_dgb int ;};
-
-// InitSignature initialises the PdfSignature.
-func (_ffb *adobePKCS7Detached )InitSignature (sig *_da .PdfSignature )error {if !_ffb ._ca {if _ffb ._fd ==nil {return _g .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _ffb ._fg ==nil {return _g .New ("\u0070\u0072\u0069\u0076\u0061\u0074\u0065\u004b\u0065\u0079\u0020m\u0075\u0073\u0074\u0020\u006e\u006f\u0074\u0020\u0062\u0065 \u006e\u0069\u006c");};};_cad :=*_ffb ;sig .Handler =&_cad ;sig .Filter =_ba .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_ba .MakeName ("\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064");sig .Reference =nil ;_bd ,_gd :=_cad .NewDigest (sig );if _gd !=nil {return _gd ;};_bd .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _cad .Sign (sig ,_bd );};
-
-// Validate validates PdfSignature.
-func (_egf *adobePKCS7Detached )Validate (sig *_da .PdfSignature ,digest _da .Hasher )(_da .SignatureValidationResult ,error ){_af :=sig .Contents .Bytes ();_dec ,_ef :=_cd .Parse (_af );if _ef !=nil {return _da .SignatureValidationResult {},_ef ;};_bdd :=digest .(*_f .Buffer );_dec .Content =_bdd .Bytes ();if _ef =_dec .Verify ();_ef !=nil {return _da .SignatureValidationResult {},_ef ;};return _da .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
-
-// NewDigest creates a new digest.
-func (_geb *adobeX509RSASHA1 )NewDigest (sig *_da .PdfSignature )(_da .Hasher ,error ){_fbd ,_db :=_geb .getCertificate (sig );if _db !=nil {return nil ,_db ;};_ab ,_ :=_eec (_fbd .SignatureAlgorithm );return _ab .New (),nil ;};
-
-// IsApplicable returns true if the signature handler is applicable for the PdfSignature
-func (_ce *adobePKCS7Detached )IsApplicable (sig *_da .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064";};func (_aee *adobePKCS7Detached )getCertificate (_daa *_da .PdfSignature )(*_gc .Certificate ,error ){if _aee ._fd !=nil {return _aee ._fd ,nil ;};var _aa []byte ;switch _gcag :=_daa .Cert .(type ){case *_ba .PdfObjectString :_aa =_gcag .Bytes ();case *_ba .PdfObjectArray :if _gcag .Len ()==0{return nil ,_g .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_be :=range _gcag .Elements (){_fb ,_ea :=_ba .GetString (_be );if !_ea {return nil ,_dg .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_be );};_aa =append (_aa ,_fb .Bytes ()...);};default:return nil ,_dg .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_gcag );};_cf ,_aeg :=_gc .ParseCertificates (_aa );if _aeg !=nil {return nil ,_aeg ;};return _cf [0],nil ;};
-
-// NewDocTimeStamp creates a new DocTimeStamp signature handler.
-// Both the timestamp server URL and the hash algorithm can be empty for the
-// signature validation.
-// The following hash algorithms are supported:
-// crypto.SHA1, crypto.SHA256, crypto.SHA384, crypto.SHA512.
-// NOTE: the handler will do a mock Sign when initializing the signature
-// in order to estimate the signature size. Use NewDocTimeStampWithOpts
-// for providing the signature size.
-func NewDocTimeStamp (timestampServerURL string ,hashAlgorithm _ff .Hash )(_da .SignatureHandler ,error ){return &docTimeStamp {_dbe :timestampServerURL ,_dece :hashAlgorithm },nil ;};
-
-// NewEmptyAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached
-// signature handler. The generated signature is empty and of size signatureLen.
-// The signatureLen parameter can be 0 for the signature validation.
-func NewEmptyAdobePKCS7Detached (signatureLen int )(_da .SignatureHandler ,error ){return &adobePKCS7Detached {_ca :true ,_dgb :signatureLen },nil ;};func _eec (_gcg _gc .SignatureAlgorithm )(_ff .Hash ,bool ){var _deb _ff .Hash ;switch _gcg {case _gc .SHA1WithRSA :_deb =_ff .SHA1 ;case _gc .SHA256WithRSA :_deb =_ff .SHA256 ;case _gc .SHA384WithRSA :_deb =_ff .SHA384 ;case _gc .SHA512WithRSA :_deb =_ff .SHA512 ;default:return _ff .SHA1 ,false ;};return _deb ,true ;};func _bfa (_bae _b .ObjectIdentifier )(_ff .Hash ,error ){switch {case _bae .Equal (_cd .OIDDigestAlgorithmSHA1 ),_bae .Equal (_cd .OIDDigestAlgorithmECDSASHA1 ),_bae .Equal (_cd .OIDDigestAlgorithmDSA ),_bae .Equal (_cd .OIDDigestAlgorithmDSASHA1 ),_bae .Equal (_cd .OIDEncryptionAlgorithmRSA ):return _ff .SHA1 ,nil ;case _bae .Equal (_cd .OIDDigestAlgorithmSHA256 ),_bae .Equal (_cd .OIDDigestAlgorithmECDSASHA256 ):return _ff .SHA256 ,nil ;case _bae .Equal (_cd .OIDDigestAlgorithmSHA384 ),_bae .Equal (_cd .OIDDigestAlgorithmECDSASHA384 ):return _ff .SHA384 ,nil ;case _bae .Equal (_cd .OIDDigestAlgorithmSHA512 ),_bae .Equal (_cd .OIDDigestAlgorithmECDSASHA512 ):return _ff .SHA512 ,nil ;};return _ff .Hash (0),_cd .ErrUnsupportedAlgorithm ;};
-
-// InitSignature initialises the PdfSignature.
-func (_bg *adobeX509RSASHA1 )InitSignature (sig *_da .PdfSignature )error {if _bg ._ag ==nil {return _g .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _bg ._aac ==nil &&_bg ._fdf ==nil {return _g .New ("\u006d\u0075\u0073\u0074\u0020\u0070\u0072o\u0076\u0069\u0064e\u0020\u0065\u0069t\u0068\u0065r\u0020\u0061\u0020\u0070\u0072\u0069v\u0061te\u0020\u006b\u0065\u0079\u0020\u006f\u0072\u0020\u0061\u0020\u0073\u0069\u0067\u006e\u0069\u006e\u0067\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_ee :=*_bg ;sig .Handler =&_ee ;sig .Filter =_ba .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_ba .MakeName ("\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031");sig .Cert =_ba .MakeString (string (_ee ._ag .Raw ));sig .Reference =nil ;_gcd ,_egc :=_ee .NewDigest (sig );if _egc !=nil {return _egc ;};_gcd .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _ee .Sign (sig ,_gcd );};
-
-// NewAdobeX509RSASHA1 creates a new Adobe.PPKMS/Adobe.PPKLite adbe.x509.rsa_sha1 signature handler.
-// Both parameters may be nil for the signature validation.
-func NewAdobeX509RSASHA1 (privateKey *_ae .PrivateKey ,certificate *_gc .Certificate )(_da .SignatureHandler ,error ){return &adobeX509RSASHA1 {_ag :certificate ,_aac :privateKey },nil ;};
-
-// NewDigest creates a new digest.
-func (_ec *docTimeStamp )NewDigest (sig *_da .PdfSignature )(_da .Hasher ,error ){return _f .NewBuffer (nil ),nil ;};
-
-// SignFunc represents a custom signing function. The function should return
-// the computed signature.
-type SignFunc func (_acd *_da .PdfSignature ,_df _da .Hasher )([]byte ,error );func (_cbd *adobeX509RSASHA1 )getCertificate (_ad *_da .PdfSignature )(*_gc .Certificate ,error ){if _cbd ._ag !=nil {return _cbd ._ag ,nil ;};var _baa []byte ;switch _bbd :=_ad .Cert .(type ){case *_ba .PdfObjectString :_baa =_bbd .Bytes ();case *_ba .PdfObjectArray :if _bbd .Len ()==0{return nil ,_g .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_cdd :=range _bbd .Elements (){_cde ,_fbaa :=_ba .GetString (_cdd );if !_fbaa {return nil ,_dg .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_cdd );};_baa =append (_baa ,_cde .Bytes ()...);};default:return nil ,_dg .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_bbd );};_fdg ,_ga :=_gc .ParseCertificates (_baa );if _ga !=nil {return nil ,_ga ;};return _fdg [0],nil ;};
+package sighandler ;import (_g "bytes";_dd "crypto";_e "crypto/rand";_ab "crypto/rsa";_ag "crypto/x509";_fcd "crypto/x509/pkix";_ad "encoding/asn1";_gc "errors";_db "fmt";_ge "github.com/unidoc/pkcs7";_af "github.com/unidoc/timestamp";_bd "github.com/unidoc/unipdf/v3/core";_c "github.com/unidoc/unipdf/v3/model";_b "hash";_d "io";_fcg "io/ioutil";_fc "net/http";_f "time";);
 
 // NewAdobeX509RSASHA1Custom creates a new Adobe.PPKMS/Adobe.PPKLite adbe.x509.rsa_sha1 signature handler
 // with a custom signing function. Both parameters may be nil for the signature validation.
-func NewAdobeX509RSASHA1Custom (certificate *_gc .Certificate ,signFunc SignFunc )(_da .SignatureHandler ,error ){return &adobeX509RSASHA1 {_ag :certificate ,_fdf :signFunc },nil ;};type timestampInfo struct{Version int ;Policy _b .RawValue ;MessageImprint struct{HashAlgorithm _dc .AlgorithmIdentifier ;HashedMessage []byte ;};SerialNumber _b .RawValue ;GeneralizedTime _d .Time ;};
+func NewAdobeX509RSASHA1Custom (certificate *_ag .Certificate ,signFunc SignFunc )(_c .SignatureHandler ,error ){return &adobeX509RSASHA1 {_dea :certificate ,_dcd :signFunc },nil ;};
 
-// Sign sets the Contents fields for the PdfSignature.
-func (_caf *adobeX509RSASHA1 )Sign (sig *_da .PdfSignature ,digest _da .Hasher )error {var _fbae []byte ;var _dbf error ;if _caf ._fdf !=nil {_fbae ,_dbf =_caf ._fdf (sig ,digest );if _dbf !=nil {return _dbf ;};}else {_eee ,_fge :=digest .(_de .Hash );if !_fge {return _g .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_cg ,_ :=_eec (_caf ._ag .SignatureAlgorithm );_fbae ,_dbf =_ae .SignPKCS1v15 (_gf .Reader ,_caf ._aac ,_cg ,_eee .Sum (nil ));if _dbf !=nil {return _dbf ;};};_fbae ,_dbf =_b .Marshal (_fbae );if _dbf !=nil {return _dbf ;};sig .Contents =_ba .MakeHexString (string (_fbae ));return nil ;};
+// NewDigest creates a new digest.
+func (_fa *adobeX509RSASHA1 )NewDigest (sig *_c .PdfSignature )(_c .Hasher ,error ){_dba ,_dad :=_fa .getCertificate (sig );if _dad !=nil {return nil ,_dad ;};_fda ,_ :=_dgc (_dba .SignatureAlgorithm );return _fda .New (),nil ;};
+
+// NewAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached signature handler.
+// Both parameters may be nil for the signature validation.
+func NewAdobePKCS7Detached (privateKey *_ab .PrivateKey ,certificate *_ag .Certificate )(_c .SignatureHandler ,error ){return &adobePKCS7Detached {_gg :certificate ,_fd :privateKey },nil ;};
 
 // Validate validates PdfSignature.
-func (_bgb *docTimeStamp )Validate (sig *_da .PdfSignature ,digest _da .Hasher )(_da .SignatureValidationResult ,error ){_cee :=sig .Contents .Bytes ();_aga ,_cae :=_cd .Parse (_cee );if _cae !=nil {return _da .SignatureValidationResult {},_cae ;};if _cae =_aga .Verify ();_cae !=nil {return _da .SignatureValidationResult {},_cae ;};var _bge timestampInfo ;_ ,_cae =_b .Unmarshal (_aga .Content ,&_bge );if _cae !=nil {return _da .SignatureValidationResult {},_cae ;};_cbe ,_cae :=_bfa (_bge .MessageImprint .HashAlgorithm .Algorithm );if _cae !=nil {return _da .SignatureValidationResult {},_cae ;};_dfc :=_cbe .New ();_gg :=digest .(*_f .Buffer );_dfc .Write (_gg .Bytes ());_egcc :=_dfc .Sum (nil );_ade :=_da .SignatureValidationResult {IsSigned :true ,IsVerified :_f .Equal (_egcc ,_bge .MessageImprint .HashedMessage ),GeneralizedTime :_bge .GeneralizedTime };return _ade ,nil ;};
+func (_daa *adobeX509RSASHA1 )Validate (sig *_c .PdfSignature ,digest _c .Hasher )(_c .SignatureValidationResult ,error ){_fea ,_bcf :=_daa .getCertificate (sig );if _bcf !=nil {return _c .SignatureValidationResult {},_bcf ;};_ae :=sig .Contents .Bytes ();var _bcb []byte ;if _ ,_cfc :=_ad .Unmarshal (_ae ,&_bcb );_cfc !=nil {return _c .SignatureValidationResult {},_cfc ;};_aaf ,_ff :=digest .(_b .Hash );if !_ff {return _c .SignatureValidationResult {},_gc .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_cgg ,_ :=_dgc (_fea .SignatureAlgorithm );if _bg :=_ab .VerifyPKCS1v15 (_fea .PublicKey .(*_ab .PublicKey ),_cgg ,_aaf .Sum (nil ),_bcb );_bg !=nil {return _c .SignatureValidationResult {},_bg ;};return _c .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
 
-// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
-func (_cdc *adobeX509RSASHA1 )IsApplicable (sig *_da .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031";};
+// NewDigest creates a new digest.
+func (_daga *docTimeStamp )NewDigest (sig *_c .PdfSignature )(_c .Hasher ,error ){return _g .NewBuffer (nil ),nil ;};
 
-// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
-func (_ged *docTimeStamp )IsApplicable (sig *_da .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031";};
+// Validate validates PdfSignature.
+func (_dde *docTimeStamp )Validate (sig *_c .PdfSignature ,digest _c .Hasher )(_c .SignatureValidationResult ,error ){_fff :=sig .Contents .Bytes ();_bgg ,_fdg :=_ge .Parse (_fff );if _fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};if _fdg =_bgg .Verify ();_fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};var _bbf timestampInfo ;_ ,_fdg =_ad .Unmarshal (_bgg .Content ,&_bbf );if _fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};_feaa ,_fdg :=_gfd (_bbf .MessageImprint .HashAlgorithm .Algorithm );if _fdg !=nil {return _c .SignatureValidationResult {},_fdg ;};_fbd :=_feaa .New ();_acd :=digest .(*_g .Buffer );_fbd .Write (_acd .Bytes ());_fcdc :=_fbd .Sum (nil );_bcfb :=_c .SignatureValidationResult {IsSigned :true ,IsVerified :_g .Equal (_fcdc ,_bbf .MessageImprint .HashedMessage ),GeneralizedTime :_bbf .GeneralizedTime };return _bcfb ,nil ;};
+
+// InitSignature initialises the PdfSignature.
+func (_da *adobeX509RSASHA1 )InitSignature (sig *_c .PdfSignature )error {if _da ._dea ==nil {return _gc .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _da ._gd ==nil &&_da ._dcd ==nil {return _gc .New ("\u006d\u0075\u0073\u0074\u0020\u0070\u0072o\u0076\u0069\u0064e\u0020\u0065\u0069t\u0068\u0065r\u0020\u0061\u0020\u0070\u0072\u0069v\u0061te\u0020\u006b\u0065\u0079\u0020\u006f\u0072\u0020\u0061\u0020\u0073\u0069\u0067\u006e\u0069\u006e\u0067\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_cad :=*_da ;sig .Handler =&_cad ;sig .Filter =_bd .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_bd .MakeName ("\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031");sig .Cert =_bd .MakeString (string (_cad ._dea .Raw ));sig .Reference =nil ;_cadb ,_cc :=_cad .NewDigest (sig );if _cc !=nil {return _cc ;};_cadb .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _cad .Sign (sig ,_cadb );};func (_efg *adobeX509RSASHA1 )getCertificate (_fcgc *_c .PdfSignature )(*_ag .Certificate ,error ){if _efg ._dea !=nil {return _efg ._dea ,nil ;};var _agf []byte ;switch _eg :=_fcgc .Cert .(type ){case *_bd .PdfObjectString :_agf =_eg .Bytes ();case *_bd .PdfObjectArray :if _eg .Len ()==0{return nil ,_gc .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_feg :=range _eg .Elements (){_dag ,_ddg :=_bd .GetString (_feg );if !_ddg {return nil ,_db .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_feg );};_agf =append (_agf ,_dag .Bytes ()...);};default:return nil ,_db .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_eg );};_bc ,_eaf :=_ag .ParseCertificates (_agf );if _eaf !=nil {return nil ,_eaf ;};return _bc [0],nil ;};
+
+// Sign sets the Contents fields for the PdfSignature.
+func (_ccc *adobeX509RSASHA1 )Sign (sig *_c .PdfSignature ,digest _c .Hasher )error {var _bae []byte ;var _ce error ;if _ccc ._dcd !=nil {_bae ,_ce =_ccc ._dcd (sig ,digest );if _ce !=nil {return _ce ;};}else {_adb ,_df :=digest .(_b .Hash );if !_df {return _gc .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_ddgc ,_ :=_dgc (_ccc ._dea .SignatureAlgorithm );_bae ,_ce =_ab .SignPKCS1v15 (_e .Reader ,_ccc ._gd ,_ddgc ,_adb .Sum (nil ));if _ce !=nil {return _ce ;};};_bae ,_ce =_ad .Marshal (_bae );if _ce !=nil {return _ce ;};sig .Contents =_bd .MakeHexString (string (_bae ));return nil ;};
+
+// InitSignature initialises the PdfSignature.
+func (_ea *adobePKCS7Detached )InitSignature (sig *_c .PdfSignature )error {if !_ea ._ga {if _ea ._gg ==nil {return _gc .New ("c\u0065\u0072\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u006d\u0075\u0073\u0074\u0020n\u006f\u0074\u0020b\u0065 \u006e\u0069\u006c");};if _ea ._fd ==nil {return _gc .New ("\u0070\u0072\u0069\u0076\u0061\u0074\u0065\u004b\u0065\u0079\u0020m\u0075\u0073\u0074\u0020\u006e\u006f\u0074\u0020\u0062\u0065 \u006e\u0069\u006c");};};_adg :=*_ea ;sig .Handler =&_adg ;sig .Filter =_bd .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_bd .MakeName ("\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064");sig .Reference =nil ;_gga ,_bf :=_adg .NewDigest (sig );if _bf !=nil {return _bf ;};_gga .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));return _adg .Sign (sig ,_gga );};
+
+// Sign sets the Contents fields.
+func (_dec *adobePKCS7Detached )Sign (sig *_c .PdfSignature ,digest _c .Hasher )error {if _dec ._ga {_dg :=_dec ._cg ;if _dg <=0{_dg =8192;};sig .Contents =_bd .MakeHexString (string (make ([]byte ,_dg )));return nil ;};_bfb :=digest .(*_g .Buffer );_gfg ,_afg :=_ge .NewSignedData (_bfb .Bytes ());if _afg !=nil {return _afg ;};if _ac :=_gfg .AddSigner (_dec ._gg ,_dec ._fd ,_ge .SignerInfoConfig {});_ac !=nil {return _ac ;};_gfg .Detach ();_abd ,_afg :=_gfg .Finish ();if _afg !=nil {return _afg ;};_ca :=make ([]byte ,8192);copy (_ca ,_abd );sig .Contents =_bd .MakeHexString (string (_ca ));return nil ;};type adobeX509RSASHA1 struct{_gd *_ab .PrivateKey ;_dea *_ag .Certificate ;_dcd SignFunc ;};
+
+// SignFunc represents a custom signing function. The function should return
+// the computed signature.
+type SignFunc func (_efe *_c .PdfSignature ,_ded _c .Hasher )([]byte ,error );
 
 // DocTimeStampOpts defines options for configuring the timestamp handler.
 type DocTimeStampOpts struct{
@@ -79,29 +58,50 @@ type DocTimeStampOpts struct{
 // signature.
 SignatureSize int ;};
 
-// InitSignature initialises the PdfSignature.
-func (_bc *docTimeStamp )InitSignature (sig *_da .PdfSignature )error {_eb :=*_bc ;sig .Handler =&_eb ;sig .Filter =_ba .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_ba .MakeName ("\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031");sig .Reference =nil ;if _bc ._bgg > 0{sig .Contents =_ba .MakeHexString (string (make ([]byte ,_bc ._bgg )));}else {_dea ,_bfd :=_bc .NewDigest (sig );if _bfd !=nil {return _bfd ;};_dea .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));if _bfd =_eb .Sign (sig ,_dea );_bfd !=nil {return _bfd ;};_bc ._bgg =_eb ._bgg ;};return nil ;};
-
-// Sign sets the Contents fields for the PdfSignature.
-func (_dfd *docTimeStamp )Sign (sig *_da .PdfSignature ,digest _da .Hasher )error {_bfac :=digest .(*_f .Buffer );_afda :=_dfd ._dece .New ();if _ ,_dbb :=_c .Copy (_afda ,_bfac );_dbb !=nil {return _dbb ;};_bdg :=_gca .Request {HashAlgorithm :_dfd ._dece ,HashedMessage :_afda .Sum (nil ),Certificates :true ,Extensions :nil ,ExtraExtensions :nil };_ffc ,_aba :=_bdg .Marshal ();if _aba !=nil {return _aba ;};_bcc ,_aba :=_eg .Post (_dfd ._dbe ,"a\u0070\u0070\u006c\u0069\u0063\u0061t\u0069\u006f\u006e\u002f\u0074\u0069\u006d\u0065\u0073t\u0061\u006d\u0070-\u0071u\u0065\u0072\u0079",_f .NewBuffer (_ffc ));if _aba !=nil {return _aba ;};defer _bcc .Body .Close ();_agd ,_aba :=_a .ReadAll (_bcc .Body );if _aba !=nil {return _aba ;};if _bcc .StatusCode !=_eg .StatusOK {return _dg .Errorf ("\u0068\u0074\u0074\u0070\u0020\u0073\u0074\u0061\u0074\u0075\u0073\u0020\u0063\u006f\u0064e\u0020n\u006f\u0074\u0020\u006f\u006b\u0020\u0028\u0067\u006f\u0074\u0020\u0025\u0064\u0029",_bcc .StatusCode );};var _aab struct{Version _b .RawValue ;Content _b .RawValue ;};if _ ,_aba =_b .Unmarshal (_agd ,&_aab );_aba !=nil {return _aba ;};_ecc :=len (_aab .Content .FullBytes );if _dfd ._bgg > 0&&_ecc > _dfd ._bgg {return _da .ErrSignNotEnoughSpace ;};if _ecc > 0{_dfd ._bgg =_ecc +128;};sig .Contents =_ba .MakeHexString (string (_aab .Content .FullBytes ));return nil ;};func (_ed *docTimeStamp )getCertificate (_fef *_da .PdfSignature )(*_gc .Certificate ,error ){var _cba []byte ;switch _dag :=_fef .Cert .(type ){case *_ba .PdfObjectString :_cba =_dag .Bytes ();case *_ba .PdfObjectArray :if _dag .Len ()==0{return nil ,_g .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_dd :=range _dag .Elements (){_fgc ,_dda :=_ba .GetString (_dd );if !_dda {return nil ,_dg .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_dd );};_cba =append (_cba ,_fgc .Bytes ()...);};default:return nil ,_dg .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_dag );};_fdd ,_def :=_gc .ParseCertificates (_cba );if _def !=nil {return nil ,_def ;};return _fdd [0],nil ;};
-
-// NewDigest creates a new digest.
-func (_cb *adobePKCS7Detached )NewDigest (sig *_da .PdfSignature )(_da .Hasher ,error ){return _f .NewBuffer (nil ),nil ;};
-
 // NewDocTimeStampWithOpts returns a new DocTimeStamp configured using the
 // specified options. If no options are provided, default options will be used.
 // Both the timestamp server URL and the hash algorithm can be empty for the
 // signature validation.
 // The following hash algorithms are supported:
 // crypto.SHA1, crypto.SHA256, crypto.SHA384, crypto.SHA512.
-func NewDocTimeStampWithOpts (timestampServerURL string ,hashAlgorithm _ff .Hash ,opts *DocTimeStampOpts )(_da .SignatureHandler ,error ){if opts ==nil {opts =&DocTimeStampOpts {};};if opts .SignatureSize <=0{opts .SignatureSize =4192;};return &docTimeStamp {_dbe :timestampServerURL ,_dece :hashAlgorithm ,_bgg :opts .SignatureSize },nil ;};
-
-// Sign sets the Contents fields.
-func (_bb *adobePKCS7Detached )Sign (sig *_da .PdfSignature ,digest _da .Hasher )error {if _bb ._ca {_bde :=_bb ._dgb ;if _bde <=0{_bde =8192;};sig .Contents =_ba .MakeHexString (string (make ([]byte ,_bde )));return nil ;};_ge :=digest .(*_f .Buffer );_gdd ,_afd :=_cd .NewSignedData (_ge .Bytes ());if _afd !=nil {return _afd ;};if _fba :=_gdd .AddSigner (_bb ._fd ,_bb ._fg ,_cd .SignerInfoConfig {});_fba !=nil {return _fba ;};_gdd .Detach ();_ac ,_afd :=_gdd .Finish ();if _afd !=nil {return _afd ;};_cbg :=make ([]byte ,8192);copy (_cbg ,_ac );sig .Contents =_ba .MakeHexString (string (_cbg ));return nil ;};type docTimeStamp struct{_dbe string ;_dece _ff .Hash ;_bgg int ;};type adobeX509RSASHA1 struct{_aac *_ae .PrivateKey ;_ag *_gc .Certificate ;_fdf SignFunc ;};
+func NewDocTimeStampWithOpts (timestampServerURL string ,hashAlgorithm _dd .Hash ,opts *DocTimeStampOpts )(_c .SignatureHandler ,error ){if opts ==nil {opts =&DocTimeStampOpts {};};if opts .SignatureSize <=0{opts .SignatureSize =4192;};return &docTimeStamp {_ed :timestampServerURL ,_ede :hashAlgorithm ,_abf :opts .SignatureSize },nil ;};type adobePKCS7Detached struct{_fd *_ab .PrivateKey ;_gg *_ag .Certificate ;_ga bool ;_cg int ;};
 
 // Validate validates PdfSignature.
-func (_fe *adobeX509RSASHA1 )Validate (sig *_da .PdfSignature ,digest _da .Hasher )(_da .SignatureValidationResult ,error ){_fc ,_bee :=_fe .getCertificate (sig );if _bee !=nil {return _da .SignatureValidationResult {},_bee ;};_cff :=sig .Contents .Bytes ();var _bgc []byte ;if _ ,_efc :=_b .Unmarshal (_cff ,&_bgc );_efc !=nil {return _da .SignatureValidationResult {},_efc ;};_cda ,_aef :=digest .(_de .Hash );if !_aef {return _da .SignatureValidationResult {},_g .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_dfe ,_ :=_eec (_fc .SignatureAlgorithm );if _gfa :=_ae .VerifyPKCS1v15 (_fc .PublicKey .(*_ae .PublicKey ),_dfe ,_cda .Sum (nil ),_bgc );_gfa !=nil {return _da .SignatureValidationResult {},_gfa ;};return _da .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
+func (_efc *adobePKCS7Detached )Validate (sig *_c .PdfSignature ,digest _c .Hasher )(_c .SignatureValidationResult ,error ){_bb :=sig .Contents .Bytes ();_dca ,_gf :=_ge .Parse (_bb );if _gf !=nil {return _c .SignatureValidationResult {},_gf ;};_fg :=digest .(*_g .Buffer );_dca .Content =_fg .Bytes ();if _gf =_dca .Verify ();_gf !=nil {return _c .SignatureValidationResult {},_gf ;};return _c .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};func (_bdc *adobePKCS7Detached )getCertificate (_de *_c .PdfSignature )(*_ag .Certificate ,error ){if _bdc ._gg !=nil {return _bdc ._gg ,nil ;};var _ef []byte ;switch _dc :=_de .Cert .(type ){case *_bd .PdfObjectString :_ef =_dc .Bytes ();case *_bd .PdfObjectArray :if _dc .Len ()==0{return nil ,_gc .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_ec :=range _dc .Elements (){_cgd ,_gb :=_bd .GetString (_ec );if !_gb {return nil ,_db .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_ec );};_ef =append (_ef ,_cgd .Bytes ()...);};default:return nil ,_db .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_dc );};_eac ,_cge :=_ag .ParseCertificates (_ef );if _cge !=nil {return nil ,_cge ;};return _eac [0],nil ;};func _dgc (_bbg _ag .SignatureAlgorithm )(_dd .Hash ,bool ){var _fe _dd .Hash ;switch _bbg {case _ag .SHA1WithRSA :_fe =_dd .SHA1 ;case _ag .SHA256WithRSA :_fe =_dd .SHA256 ;case _ag .SHA384WithRSA :_fe =_dd .SHA384 ;case _ag .SHA512WithRSA :_fe =_dd .SHA512 ;default:return _dd .SHA1 ,false ;};return _fe ,true ;};
 
-// NewAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached signature handler.
+// Sign sets the Contents fields for the PdfSignature.
+func (_fcb *docTimeStamp )Sign (sig *_c .PdfSignature ,digest _c .Hasher )error {_eba :=digest .(*_g .Buffer );_fag :=_fcb ._ede .New ();if _ ,_afd :=_d .Copy (_fag ,_eba );_afd !=nil {return _afd ;};_aafg :=_af .Request {HashAlgorithm :_fcb ._ede ,HashedMessage :_fag .Sum (nil ),Certificates :true ,Extensions :nil ,ExtraExtensions :nil };_age ,_cdb :=_aafg .Marshal ();if _cdb !=nil {return _cdb ;};_fed ,_cdb :=_fc .Post (_fcb ._ed ,"a\u0070\u0070\u006c\u0069\u0063\u0061t\u0069\u006f\u006e\u002f\u0074\u0069\u006d\u0065\u0073t\u0061\u006d\u0070-\u0071u\u0065\u0072\u0079",_g .NewBuffer (_age ));if _cdb !=nil {return _cdb ;};defer _fed .Body .Close ();_cef ,_cdb :=_fcg .ReadAll (_fed .Body );if _cdb !=nil {return _cdb ;};if _fed .StatusCode !=_fc .StatusOK {return _db .Errorf ("\u0068\u0074\u0074\u0070\u0020\u0073\u0074\u0061\u0074\u0075\u0073\u0020\u0063\u006f\u0064e\u0020n\u006f\u0074\u0020\u006f\u006b\u0020\u0028\u0067\u006f\u0074\u0020\u0025\u0064\u0029",_fed .StatusCode );};var _fbe struct{Version _ad .RawValue ;Content _ad .RawValue ;};if _ ,_cdb =_ad .Unmarshal (_cef ,&_fbe );_cdb !=nil {return _cdb ;};_cbe :=len (_fbe .Content .FullBytes );if _fcb ._abf > 0&&_cbe > _fcb ._abf {return _c .ErrSignNotEnoughSpace ;};if _cbe > 0{_fcb ._abf =_cbe +128;};sig .Contents =_bd .MakeHexString (string (_fbe .Content .FullBytes ));return nil ;};func (_afa *docTimeStamp )getCertificate (_geg *_c .PdfSignature )(*_ag .Certificate ,error ){var _eb []byte ;switch _bfd :=_geg .Cert .(type ){case *_bd .PdfObjectString :_eb =_bfd .Bytes ();case *_bd .PdfObjectArray :if _bfd .Len ()==0{return nil ,_gc .New ("\u006e\u006f\u0020s\u0069\u0067\u006e\u0061t\u0075\u0072\u0065\u0020\u0063\u0065\u0072t\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};for _ ,_cac :=range _bfd .Elements (){_fdb ,_dbc :=_bd .GetString (_cac );if !_dbc {return nil ,_db .Errorf ("\u0069\u006ev\u0061\u006c\u0069\u0064\u0020\u0063\u0065\u0072\u0074\u0069\u0066\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062j\u0065\u0063\u0074\u0020\u0074\u0079p\u0065\u0020\u0069\u006e\u0020\u0073\u0069\u0067\u006e\u0061\u0074\u0075\u0072\u0065 \u0063\u0065r\u0074\u0069\u0066\u0069c\u0061\u0074\u0065\u0020\u0063h\u0061\u0069\u006e\u003a\u0020\u0025\u0054",_cac );};_eb =append (_eb ,_fdb .Bytes ()...);};default:return nil ,_db .Errorf ("\u0069n\u0076\u0061l\u0069\u0064\u0020s\u0069\u0067\u006e\u0061\u0074\u0075\u0072e\u0020\u0063\u0065\u0072\u0074\u0069f\u0069\u0063\u0061\u0074\u0065\u0020\u006f\u0062\u006a\u0065\u0063t\u0020\u0074\u0079\u0070\u0065\u003a\u0020\u0025\u0054",_bfd );};_cb ,_cd :=_ag .ParseCertificates (_eb );if _cd !=nil {return nil ,_cd ;};return _cb [0],nil ;};
+
+// NewAdobeX509RSASHA1 creates a new Adobe.PPKMS/Adobe.PPKLite adbe.x509.rsa_sha1 signature handler.
 // Both parameters may be nil for the signature validation.
-func NewAdobePKCS7Detached (privateKey *_ae .PrivateKey ,certificate *_gc .Certificate )(_da .SignatureHandler ,error ){return &adobePKCS7Detached {_fd :certificate ,_fg :privateKey },nil ;};
+func NewAdobeX509RSASHA1 (privateKey *_ab .PrivateKey ,certificate *_ag .Certificate )(_c .SignatureHandler ,error ){return &adobeX509RSASHA1 {_dea :certificate ,_gd :privateKey },nil ;};
+
+// IsApplicable returns true if the signature handler is applicable for the PdfSignature
+func (_cf *adobePKCS7Detached )IsApplicable (sig *_c .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064";};type timestampInfo struct{Version int ;Policy _ad .RawValue ;MessageImprint struct{HashAlgorithm _fcd .AlgorithmIdentifier ;HashedMessage []byte ;};SerialNumber _ad .RawValue ;GeneralizedTime _f .Time ;};
+
+// InitSignature initialises the PdfSignature.
+func (_fae *docTimeStamp )InitSignature (sig *_c .PdfSignature )error {_gge :=*_fae ;sig .Handler =&_gge ;sig .Filter =_bd .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_bd .MakeName ("\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031");sig .Reference =nil ;if _fae ._abf > 0{sig .Contents =_bd .MakeHexString (string (make ([]byte ,_fae ._abf )));}else {_fb ,_gcd :=_fae .NewDigest (sig );if _gcd !=nil {return _gcd ;};_fb .Write ([]byte ("\u0063\u0061\u006c\u0063\u0075\u006ca\u0074\u0065\u0020\u0074\u0068\u0065\u0020\u0043\u006f\u006e\u0074\u0065\u006et\u0073\u0020\u0066\u0069\u0065\u006c\u0064 \u0073\u0069\u007a\u0065"));if _gcd =_gge .Sign (sig ,_fb );_gcd !=nil {return _gcd ;};_fae ._abf =_gge ._abf ;};return nil ;};
+
+// NewDigest creates a new digest.
+func (_gbb *adobePKCS7Detached )NewDigest (sig *_c .PdfSignature )(_c .Hasher ,error ){return _g .NewBuffer (nil ),nil ;};
+
+// NewDocTimeStamp creates a new DocTimeStamp signature handler.
+// Both the timestamp server URL and the hash algorithm can be empty for the
+// signature validation.
+// The following hash algorithms are supported:
+// crypto.SHA1, crypto.SHA256, crypto.SHA384, crypto.SHA512.
+// NOTE: the handler will do a mock Sign when initializing the signature
+// in order to estimate the signature size. Use NewDocTimeStampWithOpts
+// for providing the signature size.
+func NewDocTimeStamp (timestampServerURL string ,hashAlgorithm _dd .Hash )(_c .SignatureHandler ,error ){return &docTimeStamp {_ed :timestampServerURL ,_ede :hashAlgorithm },nil ;};
+
+// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
+func (_gfa *docTimeStamp )IsApplicable (sig *_c .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031";};
+
+// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
+func (_dbg *adobeX509RSASHA1 )IsApplicable (sig *_c .PdfSignature )bool {if sig ==nil ||sig .Filter ==nil ||sig .SubFilter ==nil {return false ;};return (*sig .Filter =="A\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004d\u0053"||*sig .Filter =="\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065")&&*sig .SubFilter =="\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031";};type docTimeStamp struct{_ed string ;_ede _dd .Hash ;_abf int ;};
+
+// NewEmptyAdobePKCS7Detached creates a new Adobe.PPKMS/Adobe.PPKLite adbe.pkcs7.detached
+// signature handler. The generated signature is empty and of size signatureLen.
+// The signatureLen parameter can be 0 for the signature validation.
+func NewEmptyAdobePKCS7Detached (signatureLen int )(_c .SignatureHandler ,error ){return &adobePKCS7Detached {_ga :true ,_cg :signatureLen },nil ;};func _gfd (_be _ad .ObjectIdentifier )(_dd .Hash ,error ){switch {case _be .Equal (_ge .OIDDigestAlgorithmSHA1 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA1 ),_be .Equal (_ge .OIDDigestAlgorithmDSA ),_be .Equal (_ge .OIDDigestAlgorithmDSASHA1 ),_be .Equal (_ge .OIDEncryptionAlgorithmRSA ):return _dd .SHA1 ,nil ;case _be .Equal (_ge .OIDDigestAlgorithmSHA256 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA256 ):return _dd .SHA256 ,nil ;case _be .Equal (_ge .OIDDigestAlgorithmSHA384 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA384 ):return _dd .SHA384 ,nil ;case _be .Equal (_ge .OIDDigestAlgorithmSHA512 ),_be .Equal (_ge .OIDDigestAlgorithmECDSASHA512 ):return _dd .SHA512 ,nil ;};return _dd .Hash (0),_ge .ErrUnsupportedAlgorithm ;};

pdfutil/pdfutil.go

@@ -9,7 +9,7 @@
 // Use of this source code is governed by the UniDoc End User License Agreement
 // terms that can be accessed at https://unidoc.io/eula/
 
-package pdfutil ;import (_bb "github.com/unidoc/unipdf/v3/common";_e "github.com/unidoc/unipdf/v3/contentstream";_c "github.com/unidoc/unipdf/v3/contentstream/draw";_d "github.com/unidoc/unipdf/v3/model";);
+package pdfutil ;import (_a "github.com/unidoc/unipdf/v3/common";_cd "github.com/unidoc/unipdf/v3/contentstream";_c "github.com/unidoc/unipdf/v3/contentstream/draw";_b "github.com/unidoc/unipdf/v3/model";);
 
 // NormalizePage performs the following operations on the passed in page:
 // - Normalize the page rotation.
@@ -24,4 +24,4 @@ package pdfutil ;import (_bb "github.com/unidoc/unipdf/v3/common";_e "github.com
 //   The crop box of the page is updated based on the previous operations.
 // After normalization, the page should look the same if openend using a
 // PDF viewer.
-func NormalizePage (page *_d .PdfPage )error {_df ,_a :=page .GetMediaBox ();if _a !=nil {return _a ;};_f ,_a :=page .GetContentStreams ();if _a !=nil {return _a ;};_ec :=page .Rotate ;_g :=_ec !=nil &&*_ec !=0&&*_ec %90==0;_bba ,_ag ,_bd ,_bbe :=_df .Llx ,_df .Lly ,_df .Width (),_df .Height ();_cc :=_bba !=0||_ag !=0;if !_g &&!_cc {return nil ;};_ca :=func (_ac ,_dd ,_be float64 )_c .BoundingBox {return _c .Path {Points :[]_c .Point {_c .NewPoint (0,0).Rotate (_be ),_c .NewPoint (_ac ,0).Rotate (_be ),_c .NewPoint (0,_dd ).Rotate (_be ),_c .NewPoint (_ac ,_dd ).Rotate (_be )}}.GetBoundingBox ();};_ee :=_e .NewContentCreator ();var _eee float64 ;if _g {_eee =-float64 (*page .Rotate );_de :=_ca (_bd ,_bbe ,_eee );_ee .Translate ((_de .Width -_bd )/2+_bd /2,(_de .Height -_bbe )/2+_bbe /2);_ee .RotateDeg (_eee );_ee .Translate (-_bd /2,-_bbe /2);_bd ,_bbe =_de .Width ,_de .Height ;};if _cc {_ee .Translate (-_bba ,-_ag );};_ge :=_ee .Operations ().String ();_f =append ([]string {_ge },_f ...);if _a =page .SetContentStreams (_f ,nil );_a !=nil {return _a ;};*_df =_d .PdfRectangle {Urx :_bd ,Ury :_bbe };if _bc :=page .CropBox ;_bc !=nil {_eca ,_ddf ,_gb ,_ab :=_bc .Llx -_bba ,_bc .Lly -_ag ,_bc .Width (),_bc .Height ();if _g {_ea :=_ca (_gb ,_ab ,_eee );_gb ,_ab =_ea .Width ,_ea .Height ;};*_bc =_d .PdfRectangle {Llx :_eca ,Lly :_ddf ,Urx :_eca +_gb ,Ury :_ddf +_ab };};_bb .Log .Debug ("\u0052\u006f\u0074\u0061\u0074\u0065\u003d\u0025\u0066\u00b0\u0020\u004f\u0070\u0073\u003d%\u0071 \u004d\u0065\u0064\u0069\u0061\u0042\u006f\u0078\u003d\u0025\u002e\u0032\u0066",_eee ,_ge ,_df );page .Rotate =nil ;return nil ;};
+func NormalizePage (page *_b .PdfPage )error {_cc ,_fd :=page .GetMediaBox ();if _fd !=nil {return _fd ;};_e ,_fd :=page .GetContentStreams ();if _fd !=nil {return _fd ;};_fdb :=page .Rotate ;_d :=_fdb !=nil &&*_fdb !=0&&*_fdb %90==0;_cc .Normalize ();_df ,_cdf ,_cg ,_be :=_cc .Llx ,_cc .Lly ,_cc .Width (),_cc .Height ();_g :=_df !=0||_cdf !=0;if !_d &&!_g {return nil ;};_fb :=func (_fbe ,_ab ,_cga float64 )_c .BoundingBox {return _c .Path {Points :[]_c .Point {_c .NewPoint (0,0).Rotate (_cga ),_c .NewPoint (_fbe ,0).Rotate (_cga ),_c .NewPoint (0,_ab ).Rotate (_cga ),_c .NewPoint (_fbe ,_ab ).Rotate (_cga )}}.GetBoundingBox ();};_db :=_cd .NewContentCreator ();var _bg float64 ;if _d {_bg =-float64 (*page .Rotate );_gg :=_fb (_cg ,_be ,_bg );_db .Translate ((_gg .Width -_cg )/2+_cg /2,(_gg .Height -_be )/2+_be /2);_db .RotateDeg (_bg );_db .Translate (-_cg /2,-_be /2);_cg ,_be =_gg .Width ,_gg .Height ;};if _g {_db .Translate (-_df ,-_cdf );};_bed :=_db .Operations ().String ();_e =append ([]string {_bed },_e ...);if _fd =page .SetContentStreams (_e ,nil );_fd !=nil {return _fd ;};*_cc =_b .PdfRectangle {Urx :_cg ,Ury :_be };if _ac :=page .CropBox ;_ac !=nil {_ac .Normalize ();_ga ,_fdbd ,_dfa ,_fg :=_ac .Llx -_df ,_ac .Lly -_cdf ,_ac .Width (),_ac .Height ();if _d {_gc :=_fb (_dfa ,_fg ,_bg );_dfa ,_fg =_gc .Width ,_gc .Height ;};*_ac =_b .PdfRectangle {Llx :_ga ,Lly :_fdbd ,Urx :_ga +_dfa ,Ury :_fdbd +_fg };};_a .Log .Debug ("\u0052\u006f\u0074\u0061\u0074\u0065\u003d\u0025\u0066\u00b0\u0020\u004f\u0070\u0073\u003d%\u0071 \u004d\u0065\u0064\u0069\u0061\u0042\u006f\u0078\u003d\u0025\u002e\u0032\u0066",_bg ,_bed ,_cc );page .Rotate =nil ;return nil ;};

ps/ps.go

@@ -14,86 +14,83 @@
 //
 // Package ps implements various functionalities needed for handling Postscript for PDF uses, in particular
 // for PDF function type 4.
-package ps ;import (_dg "bufio";_ea "bytes";_b "errors";_c "fmt";_bb "github.com/unidoc/unipdf/v3/common";_a "github.com/unidoc/unipdf/v3/core";_d "io";_be "math";);func (_ggaa *PSOperand )round (_dbgg *PSStack )error {_edde ,_ddfe :=_dbgg .Pop ();if _ddfe !=nil {return _ddfe ;};if _eebf ,_gcc :=_edde .(*PSReal );_gcc {_ddfe =_dbgg .Push (MakeReal (_be .Floor (_eebf .Val +0.5)));}else if _bgfa ,_bdggf :=_edde .(*PSInteger );_bdggf {_ddfe =_dbgg .Push (MakeInteger (_bgfa .Val ));}else {return ErrTypeCheck ;};return _ddfe ;};
+package ps ;import (_c "bufio";_f "bytes";_e "errors";_dc "fmt";_cd "github.com/unidoc/unipdf/v3/common";_dce "github.com/unidoc/unipdf/v3/core";_d "io";_a "math";);
 
-// Push pushes an object on top of the stack.
-func (_ecae *PSStack )Push (obj PSObject )error {if len (*_ecae )> 100{return ErrStackOverflow ;};*_ecae =append (*_ecae ,obj );return nil ;};func (_bfd *PSOperand )bitshift (_bgb *PSStack )error {_bac ,_bfgb :=_bgb .PopInteger ();if _bfgb !=nil {return _bfgb ;};_cbc ,_bfgb :=_bgb .PopInteger ();if _bfgb !=nil {return _bfgb ;};var _deg int ;if _bac >=0{_deg =_cbc <<uint (_bac );}else {_deg =_cbc >>uint (-_bac );};_bfgb =_bgb .Push (MakeInteger (_deg ));return _bfgb ;};func (_ggb *PSOperand )sin (_bcaf *PSStack )error {_cabc ,_ebb :=_bcaf .PopNumberAsFloat64 ();if _ebb !=nil {return _ebb ;};_dda :=_be .Sin (_cabc *_be .Pi /180.0);_ebb =_bcaf .Push (MakeReal (_dda ));return _ebb ;};func (_dbac *PSOperand )cos (_geb *PSStack )error {_gcf ,_gea :=_geb .PopNumberAsFloat64 ();if _gea !=nil {return _gea ;};_ccg :=_be .Cos (_gcf *_be .Pi /180.0);_gea =_geb .Push (MakeReal (_ccg ));return _gea ;};func (_eaaa *PSOperand )idiv (_ggff *PSStack )error {_bed ,_adfd :=_ggff .Pop ();if _adfd !=nil {return _adfd ;};_ecd ,_adfd :=_ggff .Pop ();if _adfd !=nil {return _adfd ;};_dgg ,_beea :=_bed .(*PSInteger );if !_beea {return ErrTypeCheck ;};if _dgg .Val ==0{return ErrUndefinedResult ;};_addb ,_beea :=_ecd .(*PSInteger );if !_beea {return ErrTypeCheck ;};_agca :=_addb .Val /_dgg .Val ;_adfd =_ggff .Push (MakeInteger (_agca ));return _adfd ;};func (_ccgg *PSOperand )ln (_fgea *PSStack )error {_aab ,_ddbg :=_fgea .PopNumberAsFloat64 ();if _ddbg !=nil {return _ddbg ;};_agcdee :=_be .Log (_aab );_ddbg =_fgea .Push (MakeReal (_agcdee ));return _ddbg ;};
+// PSObjectArrayToFloat64Array converts []PSObject into a []float64 array. Each PSObject must represent a number,
+// otherwise a ErrTypeCheck error occurs.
+func PSObjectArrayToFloat64Array (objects []PSObject )([]float64 ,error ){var _fe []float64 ;for _ ,_ae :=range objects {if _ee ,_db :=_ae .(*PSInteger );_db {_fe =append (_fe ,float64 (_ee .Val ));}else if _eeb ,_af :=_ae .(*PSReal );_af {_fe =append (_fe ,_eeb .Val );}else {return nil ,ErrTypeCheck ;};};return _fe ,nil ;};
 
-// Exec executes the program, typically leaving output values on the stack.
-func (_gb *PSProgram )Exec (stack *PSStack )error {for _ ,_dbc :=range *_gb {var _fef error ;switch _bbf :=_dbc .(type ){case *PSInteger :_cg :=_bbf ;_fef =stack .Push (_cg );case *PSReal :_af :=_bbf ;_fef =stack .Push (_af );case *PSBoolean :_cdb :=_bbf ;_fef =stack .Push (_cdb );case *PSProgram :_ae :=_bbf ;_fef =stack .Push (_ae );case *PSOperand :_cc :=_bbf ;_fef =_cc .Exec (stack );default:return ErrTypeCheck ;};if _fef !=nil {return _fef ;};};return nil ;};func (_cgd *PSOperand )Duplicate ()PSObject {_df :=*_cgd ;return &_df };
-
-// Append appends an object to the PSProgram.
-func (_fe *PSProgram )Append (obj PSObject ){*_fe =append (*_fe ,obj )};func (_da *PSInteger )Duplicate ()PSObject {_baa :=PSInteger {};_baa .Val =_da .Val ;return &_baa };func (_aae *PSOperand )DebugString ()string {return _c .Sprintf ("\u006fp\u003a\u0027\u0025\u0073\u0027",*_aae );};func (_dcc *PSOperand )copy (_dfd *PSStack )error {_cdd ,_eff :=_dfd .PopInteger ();if _eff !=nil {return _eff ;};if _cdd < 0{return ErrRangeCheck ;};if _cdd > len (*_dfd ){return ErrRangeCheck ;};*_dfd =append (*_dfd ,(*_dfd )[len (*_dfd )-_cdd :]...);return nil ;};
+// NewPSParser returns a new instance of the PDF Postscript parser from input data.
+func NewPSParser (content []byte )*PSParser {_cbaa :=PSParser {};_fbg :=_f .NewBuffer (content );_cbaa ._dadg =_c .NewReader (_fbg );return &_cbaa ;};func (_fff *PSOperand )exp (_dbgf *PSStack )error {_ecg ,_aeg :=_dbgf .PopNumberAsFloat64 ();if _aeg !=nil {return _aeg ;};_ebd ,_aeg :=_dbgf .PopNumberAsFloat64 ();if _aeg !=nil {return _aeg ;};if _a .Abs (_ecg )< 1&&_ebd < 0{return ErrUndefinedResult ;};_ggd :=_a .Pow (_ebd ,_ecg );_aeg =_dbgf .Push (MakeReal (_ggd ));return _aeg ;};
 
 // Exec executes the operand `op` in the state specified by `stack`.
-func (_cee *PSOperand )Exec (stack *PSStack )error {_fa :=ErrUnsupportedOperand ;switch *_cee {case "\u0061\u0062\u0073":_fa =_cee .abs (stack );case "\u0061\u0064\u0064":_fa =_cee .add (stack );case "\u0061\u006e\u0064":_fa =_cee .and (stack );case "\u0061\u0074\u0061\u006e":_fa =_cee .atan (stack );case "\u0062\u0069\u0074\u0073\u0068\u0069\u0066\u0074":_fa =_cee .bitshift (stack );case "\u0063e\u0069\u006c\u0069\u006e\u0067":_fa =_cee .ceiling (stack );case "\u0063\u006f\u0070\u0079":_fa =_cee .copy (stack );case "\u0063\u006f\u0073":_fa =_cee .cos (stack );case "\u0063\u0076\u0069":_fa =_cee .cvi (stack );case "\u0063\u0076\u0072":_fa =_cee .cvr (stack );case "\u0064\u0069\u0076":_fa =_cee .div (stack );case "\u0064\u0075\u0070":_fa =_cee .dup (stack );case "\u0065\u0071":_fa =_cee .eq (stack );case "\u0065\u0078\u0063\u0068":_fa =_cee .exch (stack );case "\u0065\u0078\u0070":_fa =_cee .exp (stack );case "\u0066\u006c\u006fo\u0072":_fa =_cee .floor (stack );case "\u0067\u0065":_fa =_cee .ge (stack );case "\u0067\u0074":_fa =_cee .gt (stack );case "\u0069\u0064\u0069\u0076":_fa =_cee .idiv (stack );case "\u0069\u0066":_fa =_cee .ifCondition (stack );case "\u0069\u0066\u0065\u006c\u0073\u0065":_fa =_cee .ifelse (stack );case "\u0069\u006e\u0064e\u0078":_fa =_cee .index (stack );case "\u006c\u0065":_fa =_cee .le (stack );case "\u006c\u006f\u0067":_fa =_cee .log (stack );case "\u006c\u006e":_fa =_cee .ln (stack );case "\u006c\u0074":_fa =_cee .lt (stack );case "\u006d\u006f\u0064":_fa =_cee .mod (stack );case "\u006d\u0075\u006c":_fa =_cee .mul (stack );case "\u006e\u0065":_fa =_cee .ne (stack );case "\u006e\u0065\u0067":_fa =_cee .neg (stack );case "\u006e\u006f\u0074":_fa =_cee .not (stack );case "\u006f\u0072":_fa =_cee .or (stack );case "\u0070\u006f\u0070":_fa =_cee .pop (stack );case "\u0072\u006f\u0075n\u0064":_fa =_cee .round (stack );case "\u0072\u006f\u006c\u006c":_fa =_cee .roll (stack );case "\u0073\u0069\u006e":_fa =_cee .sin (stack );case "\u0073\u0071\u0072\u0074":_fa =_cee .sqrt (stack );case "\u0073\u0075\u0062":_fa =_cee .sub (stack );case "\u0074\u0072\u0075\u006e\u0063\u0061\u0074\u0065":_fa =_cee .truncate (stack );case "\u0078\u006f\u0072":_fa =_cee .xor (stack );};return _fa ;};
+func (_cga *PSOperand )Exec (stack *PSStack )error {_abf :=ErrUnsupportedOperand ;switch *_cga {case "\u0061\u0062\u0073":_abf =_cga .abs (stack );case "\u0061\u0064\u0064":_abf =_cga .add (stack );case "\u0061\u006e\u0064":_abf =_cga .and (stack );case "\u0061\u0074\u0061\u006e":_abf =_cga .atan (stack );case "\u0062\u0069\u0074\u0073\u0068\u0069\u0066\u0074":_abf =_cga .bitshift (stack );case "\u0063e\u0069\u006c\u0069\u006e\u0067":_abf =_cga .ceiling (stack );case "\u0063\u006f\u0070\u0079":_abf =_cga .copy (stack );case "\u0063\u006f\u0073":_abf =_cga .cos (stack );case "\u0063\u0076\u0069":_abf =_cga .cvi (stack );case "\u0063\u0076\u0072":_abf =_cga .cvr (stack );case "\u0064\u0069\u0076":_abf =_cga .div (stack );case "\u0064\u0075\u0070":_abf =_cga .dup (stack );case "\u0065\u0071":_abf =_cga .eq (stack );case "\u0065\u0078\u0063\u0068":_abf =_cga .exch (stack );case "\u0065\u0078\u0070":_abf =_cga .exp (stack );case "\u0066\u006c\u006fo\u0072":_abf =_cga .floor (stack );case "\u0067\u0065":_abf =_cga .ge (stack );case "\u0067\u0074":_abf =_cga .gt (stack );case "\u0069\u0064\u0069\u0076":_abf =_cga .idiv (stack );case "\u0069\u0066":_abf =_cga .ifCondition (stack );case "\u0069\u0066\u0065\u006c\u0073\u0065":_abf =_cga .ifelse (stack );case "\u0069\u006e\u0064e\u0078":_abf =_cga .index (stack );case "\u006c\u0065":_abf =_cga .le (stack );case "\u006c\u006f\u0067":_abf =_cga .log (stack );case "\u006c\u006e":_abf =_cga .ln (stack );case "\u006c\u0074":_abf =_cga .lt (stack );case "\u006d\u006f\u0064":_abf =_cga .mod (stack );case "\u006d\u0075\u006c":_abf =_cga .mul (stack );case "\u006e\u0065":_abf =_cga .ne (stack );case "\u006e\u0065\u0067":_abf =_cga .neg (stack );case "\u006e\u006f\u0074":_abf =_cga .not (stack );case "\u006f\u0072":_abf =_cga .or (stack );case "\u0070\u006f\u0070":_abf =_cga .pop (stack );case "\u0072\u006f\u0075n\u0064":_abf =_cga .round (stack );case "\u0072\u006f\u006c\u006c":_abf =_cga .roll (stack );case "\u0073\u0069\u006e":_abf =_cga .sin (stack );case "\u0073\u0071\u0072\u0074":_abf =_cga .sqrt (stack );case "\u0073\u0075\u0062":_abf =_cga .sub (stack );case "\u0074\u0072\u0075\u006e\u0063\u0061\u0074\u0065":_abf =_cga .truncate (stack );case "\u0078\u006f\u0072":_abf =_cga .xor (stack );};return _abf ;};func (_bce *PSOperand )dup (_dcf *PSStack )error {_agd ,_ebca :=_dcf .Pop ();if _ebca !=nil {return _ebca ;};_ebca =_dcf .Push (_agd );if _ebca !=nil {return _ebca ;};_ebca =_dcf .Push (_agd .Duplicate ());return _ebca ;};func (_eb *PSOperand )String ()string {return _dc .Sprintf ("\u0025\u0073",*_eb )};func (_ega *PSOperand )eq (_eeg *PSStack )error {_bgf ,_adee :=_eeg .Pop ();if _adee !=nil {return _adee ;};_fgge ,_adee :=_eeg .Pop ();if _adee !=nil {return _adee ;};_eea ,_da :=_bgf .(*PSBoolean );_fec ,_dad :=_fgge .(*PSBoolean );if _da ||_dad {var _fbe error ;if _da &&_dad {_fbe =_eeg .Push (MakeBool (_eea .Val ==_fec .Val ));}else {_fbe =_eeg .Push (MakeBool (false ));};return _fbe ;};var _bcb float64 ;var _gcd float64 ;if _bd ,_bcgc :=_bgf .(*PSInteger );_bcgc {_bcb =float64 (_bd .Val );}else if _gbd ,_gab :=_bgf .(*PSReal );_gab {_bcb =_gbd .Val ;}else {return ErrTypeCheck ;};if _egbg ,_fgf :=_fgge .(*PSInteger );_fgf {_gcd =float64 (_egbg .Val );}else if _ceg ,_gdb :=_fgge .(*PSReal );_gdb {_gcd =_ceg .Val ;}else {return ErrTypeCheck ;};if _a .Abs (_gcd -_bcb )< _g {_adee =_eeg .Push (MakeBool (true ));}else {_adee =_eeg .Push (MakeBool (false ));};return _adee ;};func (_edga *PSParser )parseNumber ()(PSObject ,error ){_ggbd ,_bdcc :=_dce .ParseNumber (_edga ._dadg );if _bdcc !=nil {return nil ,_bdcc ;};switch _bef :=_ggbd .(type ){case *_dce .PdfObjectFloat :return MakeReal (float64 (*_bef )),nil ;case *_dce .PdfObjectInteger :return MakeInteger (int (*_bef )),nil ;};return nil ,_dc .Errorf ("\u0075n\u0068\u0061\u006e\u0064\u006c\u0065\u0064\u0020\u006e\u0075\u006db\u0065\u0072\u0020\u0074\u0079\u0070\u0065\u0020\u0025\u0054",_ggbd );};
+
+// PSOperand represents a Postscript operand (text string).
+type PSOperand string ;func (_ff *PSReal )Duplicate ()PSObject {_fc :=PSReal {};_fc .Val =_ff .Val ;return &_fc };func (_cbd *PSProgram )String ()string {_cda :="\u007b\u0020";for _ ,_bb :=range *_cbd {_cda +=_bb .String ();_cda +="\u0020";};_cda +="\u007d";return _cda ;};func (_eed *PSOperand )floor (_cceb *PSStack )error {_bbd ,_gga :=_cceb .Pop ();if _gga !=nil {return _gga ;};if _ecdg ,_fcfgd :=_bbd .(*PSReal );_fcfgd {_gga =_cceb .Push (MakeReal (_a .Floor (_ecdg .Val )));}else if _caa ,_abg :=_bbd .(*PSInteger );_abg {_gga =_cceb .Push (MakeInteger (_caa .Val ));}else {return ErrTypeCheck ;};return _gga ;};func (_baae *PSOperand )le (_cgac *PSStack )error {_gae ,_abb :=_cgac .PopNumberAsFloat64 ();if _abb !=nil {return _abb ;};_bgc ,_abb :=_cgac .PopNumberAsFloat64 ();if _abb !=nil {return _abb ;};if _a .Abs (_bgc -_gae )< _g {_fgb :=_cgac .Push (MakeBool (true ));return _fgb ;}else if _bgc < _gae {_cfbe :=_cgac .Push (MakeBool (true ));return _cfbe ;}else {_bdd :=_cgac .Push (MakeBool (false ));return _bdd ;};};var ErrStackOverflow =_e .New ("\u0073\u0074\u0061\u0063\u006b\u0020\u006f\u0076\u0065r\u0066\u006c\u006f\u0077");func (_efeg *PSOperand )or (_ddec *PSStack )error {_ffee ,_bdda :=_ddec .Pop ();if _bdda !=nil {return _bdda ;};_cdf ,_bdda :=_ddec .Pop ();if _bdda !=nil {return _bdda ;};if _abbf ,_faf :=_ffee .(*PSBoolean );_faf {_cfg ,_ecab :=_cdf .(*PSBoolean );if !_ecab {return ErrTypeCheck ;};_bdda =_ddec .Push (MakeBool (_abbf .Val ||_cfg .Val ));return _bdda ;};if _efa ,_gdcb :=_ffee .(*PSInteger );_gdcb {_cdfe ,_cegf :=_cdf .(*PSInteger );if !_cegf {return ErrTypeCheck ;};_bdda =_ddec .Push (MakeInteger (_efa .Val |_cdfe .Val ));return _bdda ;};return ErrTypeCheck ;};func (_gbf *PSOperand )not (_afd *PSStack )error {_bbeg ,_dde :=_afd .Pop ();if _dde !=nil {return _dde ;};if _efc ,_ffa :=_bbeg .(*PSBoolean );_ffa {_dde =_afd .Push (MakeBool (!_efc .Val ));return _dde ;}else if _ccfg ,_ceffd :=_bbeg .(*PSInteger );_ceffd {_dde =_afd .Push (MakeInteger (^_ccfg .Val ));return _dde ;}else {return ErrTypeCheck ;};};func (_cb *PSBoolean )String ()string {return _dc .Sprintf ("\u0025\u0076",_cb .Val )};func (_ccf *PSOperand )cvr (_fcfg *PSStack )error {_ecf ,_gbg :=_fcfg .Pop ();if _gbg !=nil {return _gbg ;};if _dfb ,_abfc :=_ecf .(*PSReal );_abfc {_gbg =_fcfg .Push (MakeReal (_dfb .Val ));}else if _cfae ,_aac :=_ecf .(*PSInteger );_aac {_gbg =_fcfg .Push (MakeReal (float64 (_cfae .Val )));}else {return ErrTypeCheck ;};return _gbg ;};var ErrTypeCheck =_e .New ("\u0074\u0079p\u0065\u0020\u0063h\u0065\u0063\u006b\u0020\u0065\u0072\u0072\u006f\u0072");func (_gcgb *PSParser )parseFunction ()(*PSProgram ,error ){_afa ,_ :=_gcgb ._dadg .ReadByte ();if _afa !='{'{return nil ,_e .New ("\u0069\u006ev\u0061\u006c\u0069d\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_eada :=NewPSProgram ();for {_gcgb .skipSpaces ();_gegd ,_bgfg :=_gcgb ._dadg .Peek (2);if _bgfg !=nil {if _bgfg ==_d .EOF {break ;};return nil ,_bgfg ;};_cd .Log .Trace ("\u0050e\u0065k\u0020\u0073\u0074\u0072\u0069\u006e\u0067\u003a\u0020\u0025\u0073",string (_gegd ));if _gegd [0]=='}'{_cd .Log .Trace ("\u0045\u004f\u0046 \u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");_gcgb ._dadg .ReadByte ();break ;}else if _gegd [0]=='{'{_cd .Log .Trace ("\u0046u\u006e\u0063\u0074\u0069\u006f\u006e!");_gdea ,_dcc :=_gcgb .parseFunction ();if _dcc !=nil {return nil ,_dcc ;};_eada .Append (_gdea );}else if _dce .IsDecimalDigit (_gegd [0])||(_gegd [0]=='-'&&_dce .IsDecimalDigit (_gegd [1])){_cd .Log .Trace ("\u002d>\u004e\u0075\u006d\u0062\u0065\u0072!");_ebag ,_deca :=_gcgb .parseNumber ();if _deca !=nil {return nil ,_deca ;};_eada .Append (_ebag );}else {_cd .Log .Trace ("\u002d>\u004fp\u0065\u0072\u0061\u006e\u0064 \u006f\u0072 \u0062\u006f\u006f\u006c\u003f");_gegd ,_ =_gcgb ._dadg .Peek (5);_fbaa :=string (_gegd );_cd .Log .Trace ("\u0050\u0065\u0065k\u0020\u0073\u0074\u0072\u003a\u0020\u0025\u0073",_fbaa );if (len (_fbaa )> 4)&&(_fbaa [:5]=="\u0066\u0061\u006cs\u0065"){_gecc ,_acf :=_gcgb .parseBool ();if _acf !=nil {return nil ,_acf ;};_eada .Append (_gecc );}else if (len (_fbaa )> 3)&&(_fbaa [:4]=="\u0074\u0072\u0075\u0065"){_ece ,_dace :=_gcgb .parseBool ();if _dace !=nil {return nil ,_dace ;};_eada .Append (_ece );}else {_abbd ,_ceb :=_gcgb .parseOperand ();if _ceb !=nil {return nil ,_ceb ;};_eada .Append (_abbd );};};};return _eada ,nil ;};
+
+// Execute executes the program for an input parameters `objects` and returns a slice of output objects.
+func (_aef *PSExecutor )Execute (objects []PSObject )([]PSObject ,error ){for _ ,_ba :=range objects {_gg :=_aef .Stack .Push (_ba );if _gg !=nil {return nil ,_gg ;};};_fee :=_aef ._gc .Exec (_aef .Stack );if _fee !=nil {_cd .Log .Debug ("\u0045x\u0065c\u0020\u0066\u0061\u0069\u006c\u0065\u0064\u003a\u0020\u0025\u0076",_fee );return nil ,_fee ;};_cea :=[]PSObject (*_aef .Stack );_aef .Stack .Empty ();return _cea ,nil ;};func (_bgff *PSOperand )idiv (_cac *PSStack )error {_afg ,_eab :=_cac .Pop ();if _eab !=nil {return _eab ;};_dcg ,_eab :=_cac .Pop ();if _eab !=nil {return _eab ;};_eegc ,_cgf :=_afg .(*PSInteger );if !_cgf {return ErrTypeCheck ;};if _eegc .Val ==0{return ErrUndefinedResult ;};_gdg ,_cgf :=_dcg .(*PSInteger );if !_cgf {return ErrTypeCheck ;};_gcge :=_gdg .Val /_eegc .Val ;_eab =_cac .Push (MakeInteger (_gcge ));return _eab ;};func (_dgf *PSOperand )abs (_dbg *PSStack )error {_fb ,_eg :=_dbg .Pop ();if _eg !=nil {return _eg ;};if _dgfc ,_bf :=_fb .(*PSReal );_bf {_ebc :=_dgfc .Val ;if _ebc < 0{_eg =_dbg .Push (MakeReal (-_ebc ));}else {_eg =_dbg .Push (MakeReal (_ebc ));};}else if _egf ,_bea :=_fb .(*PSInteger );_bea {_ceac :=_egf .Val ;if _ceac < 0{_eg =_dbg .Push (MakeInteger (-_ceac ));}else {_eg =_dbg .Push (MakeInteger (_ceac ));};}else {return ErrTypeCheck ;};return _eg ;};func (_cce *PSOperand )atan (_ede *PSStack )error {_fdcc ,_dbea :=_ede .PopNumberAsFloat64 ();if _dbea !=nil {return _dbea ;};_ea ,_dbea :=_ede .PopNumberAsFloat64 ();if _dbea !=nil {return _dbea ;};if _fdcc ==0{var _gca error ;if _ea < 0{_gca =_ede .Push (MakeReal (270));}else {_gca =_ede .Push (MakeReal (90));};return _gca ;};_egc :=_ea /_fdcc ;_feb :=_a .Atan (_egc )*180/_a .Pi ;_dbea =_ede .Push (MakeReal (_feb ));return _dbea ;};func (_cdce *PSOperand )cos (_ebf *PSStack )error {_ag ,_abd :=_ebf .PopNumberAsFloat64 ();if _abd !=nil {return _abd ;};_febg :=_a .Cos (_ag *_a .Pi /180.0);_abd =_ebf .Push (MakeReal (_febg ));return _abd ;};
+
+// PSExecutor has its own execution stack and is used to executre a PS routine (program).
+type PSExecutor struct{Stack *PSStack ;_gc *PSProgram ;};func (_gcb *PSReal )String ()string {return _dc .Sprintf ("\u0025\u002e\u0035\u0066",_gcb .Val )};
+
+// MakeInteger returns a new PSInteger object initialized with `val`.
+func MakeInteger (val int )*PSInteger {_babb :=PSInteger {};_babb .Val =val ;return &_babb };func (_dbf *PSParser )skipSpaces ()(int ,error ){_gcc :=0;for {_fggc ,_ceea :=_dbf ._dadg .Peek (1);if _ceea !=nil {return 0,_ceea ;};if _dce .IsWhiteSpace (_fggc [0]){_dbf ._dadg .ReadByte ();_gcc ++;}else {break ;};};return _gcc ,nil ;};func (_eff *PSParser )parseOperand ()(*PSOperand ,error ){var _acgg []byte ;for {_gbged ,_dga :=_eff ._dadg .Peek (1);if _dga !=nil {if _dga ==_d .EOF {break ;};return nil ,_dga ;};if _dce .IsDelimiter (_gbged [0]){break ;};if _dce .IsWhiteSpace (_gbged [0]){break ;};_dgbd ,_ :=_eff ._dadg .ReadByte ();_acgg =append (_acgg ,_dgbd );};if len (_acgg )==0{return nil ,_e .New ("\u0069\u006e\u0076al\u0069\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064\u0020\u0028\u0065\u006d\u0070\u0074\u0079\u0029");};return MakeOperand (string (_acgg )),nil ;};func (_cca *PSOperand )truncate (_gcea *PSStack )error {_cfe ,_dcef :=_gcea .Pop ();if _dcef !=nil {return _dcef ;};if _cde ,_bbcf :=_cfe .(*PSReal );_bbcf {_eef :=int (_cde .Val );_dcef =_gcea .Push (MakeReal (float64 (_eef )));}else if _dafg ,_cfca :=_cfe .(*PSInteger );_cfca {_dcef =_gcea .Push (MakeInteger (_dafg .Val ));}else {return ErrTypeCheck ;};return _dcef ;};func (_feec *PSBoolean )DebugString ()string {return _dc .Sprintf ("\u0062o\u006f\u006c\u003a\u0025\u0076",_feec .Val );};func (_aa *PSOperand )Duplicate ()PSObject {_fgg :=*_aa ;return &_fgg };func (_cfa *PSOperand )ceiling (_dced *PSStack )error {_edf ,_cbde :=_dced .Pop ();if _cbde !=nil {return _cbde ;};if _cba ,_edec :=_edf .(*PSReal );_edec {_cbde =_dced .Push (MakeReal (_a .Ceil (_cba .Val )));}else if _dba ,_fgd :=_edf .(*PSInteger );_fgd {_cbde =_dced .Push (MakeInteger (_dba .Val ));}else {_cbde =ErrTypeCheck ;};return _cbde ;};var ErrUnsupportedOperand =_e .New ("\u0075\u006e\u0073\u0075pp\u006f\u0072\u0074\u0065\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064");
+
+// Parse parses the postscript and store as a program that can be executed.
+func (_agbef *PSParser )Parse ()(*PSProgram ,error ){_agbef .skipSpaces ();_gbfg ,_ffb :=_agbef ._dadg .Peek (2);if _ffb !=nil {return nil ,_ffb ;};if _gbfg [0]!='{'{return nil ,_e .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0050\u0053\u0020\u0050\u0072\u006f\u0067\u0072\u0061\u006d\u0020\u006e\u006f\u0074\u0020\u0073t\u0061\u0072\u0074\u0069\u006eg\u0020\u0077i\u0074\u0068\u0020\u007b");};_cab ,_ffb :=_agbef .parseFunction ();if _ffb !=nil &&_ffb !=_d .EOF {return nil ,_ffb ;};return _cab ,_ffb ;};func (_bg *PSReal )DebugString ()string {return _dc .Sprintf ("\u0072e\u0061\u006c\u003a\u0025\u002e\u0035f",_bg .Val );};const _g =0.000001;
+
+// NewPSProgram returns an empty, initialized PSProgram.
+func NewPSProgram ()*PSProgram {return &PSProgram {}};func (_be *PSOperand )DebugString ()string {return _dc .Sprintf ("\u006fp\u003a\u0027\u0025\u0073\u0027",*_be );};func (_fac *PSOperand )ln (_ecda *PSStack )error {_cgcf ,_cbag :=_ecda .PopNumberAsFloat64 ();if _cbag !=nil {return _cbag ;};_bdc :=_a .Log (_cgcf );_cbag =_ecda .Push (MakeReal (_bdc ));return _cbag ;};func (_eega *PSOperand )neg (_daed *PSStack )error {_ccdb ,_ead :=_daed .Pop ();if _ead !=nil {return _ead ;};if _bfba ,_fbb :=_ccdb .(*PSReal );_fbb {_ead =_daed .Push (MakeReal (-_bfba .Val ));return _ead ;}else if _dbd ,_ecgg :=_ccdb .(*PSInteger );_ecgg {_ead =_daed .Push (MakeInteger (-_dbd .Val ));return _ead ;}else {return ErrTypeCheck ;};};func (_fdba *PSOperand )ge (_dff *PSStack )error {_ded ,_fda :=_dff .PopNumberAsFloat64 ();if _fda !=nil {return _fda ;};_ddb ,_fda :=_dff .PopNumberAsFloat64 ();if _fda !=nil {return _fda ;};if _a .Abs (_ddb -_ded )< _g {_gbbd :=_dff .Push (MakeBool (true ));return _gbbd ;}else if _ddb > _ded {_dfe :=_dff .Push (MakeBool (true ));return _dfe ;}else {_egff :=_dff .Push (MakeBool (false ));return _egff ;};};func (_bab *PSOperand )exch (_adb *PSStack )error {_aec ,_cfb :=_adb .Pop ();if _cfb !=nil {return _cfb ;};_eba ,_cfb :=_adb .Pop ();if _cfb !=nil {return _cfb ;};_cfb =_adb .Push (_aec );if _cfb !=nil {return _cfb ;};_cfb =_adb .Push (_eba );return _cfb ;};func (_fefe *PSOperand )sqrt (_daca *PSStack )error {_edg ,_ebg :=_daca .PopNumberAsFloat64 ();if _ebg !=nil {return _ebg ;};if _edg < 0{return ErrRangeCheck ;};_edb :=_a .Sqrt (_edg );_ebg =_daca .Push (MakeReal (_edb ));return _ebg ;};func (_dbc *PSOperand )roll (_ebec *PSStack )error {_faaa ,_facg :=_ebec .Pop ();if _facg !=nil {return _facg ;};_beae ,_facg :=_ebec .Pop ();if _facg !=nil {return _facg ;};_gff ,_ffc :=_faaa .(*PSInteger );if !_ffc {return ErrTypeCheck ;};_dca ,_ffc :=_beae .(*PSInteger );if !_ffc {return ErrTypeCheck ;};if _dca .Val < 0{return ErrRangeCheck ;};if _dca .Val ==0||_dca .Val ==1{return nil ;};if _dca .Val > len (*_ebec ){return ErrStackUnderflow ;};for _bec :=0;_bec < _dgad (_gff .Val );_bec ++{var _ggb []PSObject ;_ggb =(*_ebec )[len (*_ebec )-(_dca .Val ):len (*_ebec )];if _gff .Val > 0{_gba :=_ggb [len (_ggb )-1];_ggb =append ([]PSObject {_gba },_ggb [0:len (_ggb )-1]...);}else {_cbab :=_ggb [len (_ggb )-_dca .Val ];_ggb =append (_ggb [1:],_cbab );};_bfaf :=append ((*_ebec )[0:len (*_ebec )-_dca .Val ],_ggb ...);_ebec =&_bfaf ;};return nil ;};func (_efegb *PSOperand )sin (_ffec *PSStack )error {_cdaa ,_adbf :=_ffec .PopNumberAsFloat64 ();if _adbf !=nil {return _adbf ;};_ffca :=_a .Sin (_cdaa *_a .Pi /180.0);_adbf =_ffec .Push (MakeReal (_ffca ));return _adbf ;};func (_aaa *PSOperand )ifCondition (_efg *PSStack )error {_add ,_ggec :=_efg .Pop ();if _ggec !=nil {return _ggec ;};_gee ,_ggec :=_efg .Pop ();if _ggec !=nil {return _ggec ;};_bgb ,_daf :=_add .(*PSProgram );if !_daf {return ErrTypeCheck ;};_gfb ,_daf :=_gee .(*PSBoolean );if !_daf {return ErrTypeCheck ;};if _gfb .Val {_fbdg :=_bgb .Exec (_efg );return _fbdg ;};return nil ;};
+
+// PSStack defines a stack of PSObjects. PSObjects can be pushed on or pull from the stack.
+type PSStack []PSObject ;
+
+// PSBoolean represents a boolean value.
+type PSBoolean struct{Val bool ;};func (_bebb *PSOperand )log (_bagd *PSStack )error {_gcbf ,_faec :=_bagd .PopNumberAsFloat64 ();if _faec !=nil {return _faec ;};_bbg :=_a .Log10 (_gcbf );_faec =_bagd .Push (MakeReal (_bbg ));return _faec ;};
+
+// MakeOperand returns a new PSOperand object based on string `val`.
+func MakeOperand (val string )*PSOperand {_ggbf :=PSOperand (val );return &_ggbf };var ErrUndefinedResult =_e .New ("\u0075\u006e\u0064\u0065fi\u006e\u0065\u0064\u0020\u0072\u0065\u0073\u0075\u006c\u0074\u0020\u0065\u0072\u0072o\u0072");func (_gdf *PSOperand )copy (_edd *PSStack )error {_baa ,_ebbd :=_edd .PopInteger ();if _ebbd !=nil {return _ebbd ;};if _baa < 0{return ErrRangeCheck ;};if _baa > len (*_edd ){return ErrRangeCheck ;};*_edd =append (*_edd ,(*_edd )[len (*_edd )-_baa :]...);return nil ;};func (_eee *PSInteger )Duplicate ()PSObject {_ga :=PSInteger {};_ga .Val =_eee .Val ;return &_ga };func (_fg *PSInteger )String ()string {return _dc .Sprintf ("\u0025\u0064",_fg .Val )};
+
+// MakeBool returns a new PSBoolean object initialized with `val`.
+func MakeBool (val bool )*PSBoolean {_egg :=PSBoolean {};_egg .Val =val ;return &_egg };func (_gfd *PSOperand )div (_agfd *PSStack )error {_ffe ,_cec :=_agfd .Pop ();if _cec !=nil {return _cec ;};_deee ,_cec :=_agfd .Pop ();if _cec !=nil {return _cec ;};_gbgb ,_baf :=_ffe .(*PSReal );_aeb ,_cefb :=_ffe .(*PSInteger );if !_baf &&!_cefb {return ErrTypeCheck ;};if _baf &&_gbgb .Val ==0{return ErrUndefinedResult ;};if _cefb &&_aeb .Val ==0{return ErrUndefinedResult ;};_fbda ,_cad :=_deee .(*PSReal );_ac ,_agb :=_deee .(*PSInteger );if !_cad &&!_agb {return ErrTypeCheck ;};var _fcaf float64 =0;if _cad {_fcaf =_fbda .Val ;}else {_fcaf =float64 (_ac .Val );};if _baf {_fcaf /=_gbgb .Val ;}else {_fcaf /=float64 (_aeb .Val );};_cec =_agfd .Push (MakeReal (_fcaf ));return _cec ;};func (_ed *PSOperand )and (_df *PSStack )error {_ecc ,_afc :=_df .Pop ();if _afc !=nil {return _afc ;};_dee ,_afc :=_df .Pop ();if _afc !=nil {return _afc ;};if _bc ,_ged :=_ecc .(*PSBoolean );_ged {_fdc ,_geg :=_dee .(*PSBoolean );if !_geg {return ErrTypeCheck ;};_afc =_df .Push (MakeBool (_bc .Val &&_fdc .Val ));return _afc ;};if _ebb ,_ca :=_ecc .(*PSInteger );_ca {_cc ,_fcf :=_dee .(*PSInteger );if !_fcf {return ErrTypeCheck ;};_afc =_df .Push (MakeInteger (_ebb .Val &_cc .Val ));return _afc ;};return ErrTypeCheck ;};func (_bgfd *PSOperand )mod (_dec *PSStack )error {_bfa ,_bdba :=_dec .Pop ();if _bdba !=nil {return _bdba ;};_gbe ,_bdba :=_dec .Pop ();if _bdba !=nil {return _bdba ;};_ecdb ,_gbc :=_bfa .(*PSInteger );if !_gbc {return ErrTypeCheck ;};if _ecdb .Val ==0{return ErrUndefinedResult ;};_bfag ,_gbc :=_gbe .(*PSInteger );if !_gbc {return ErrTypeCheck ;};_caad :=_bfag .Val %_ecdb .Val ;_bdba =_dec .Push (MakeInteger (_caad ));return _bdba ;};func (_bac *PSBoolean )Duplicate ()PSObject {_cg :=PSBoolean {};_cg .Val =_bac .Val ;return &_cg };
+
+// Append appends an object to the PSProgram.
+func (_fd *PSProgram )Append (obj PSObject ){*_fd =append (*_fd ,obj )};func (_gce *PSInteger )DebugString ()string {return _dc .Sprintf ("\u0069\u006e\u0074\u003a\u0025\u0064",_gce .Val );};func (_ffad *PSOperand )round (_ecae *PSStack )error {_abe ,_fdccf :=_ecae .Pop ();if _fdccf !=nil {return _fdccf ;};if _fbdc ,_bed :=_abe .(*PSReal );_bed {_fdccf =_ecae .Push (MakeReal (_a .Floor (_fbdc .Val +0.5)));}else if _bdbf ,_cead :=_abe .(*PSInteger );_cead {_fdccf =_ecae .Push (MakeInteger (_bdbf .Val ));}else {return ErrTypeCheck ;};return _fdccf ;};func (_gbge *PSOperand )index (_fae *PSStack )error {_ace ,_cfc :=_fae .Pop ();if _cfc !=nil {return _cfc ;};_fcad ,_gag :=_ace .(*PSInteger );if !_gag {return ErrTypeCheck ;};if _fcad .Val < 0{return ErrRangeCheck ;};if _fcad .Val > len (*_fae )-1{return ErrStackUnderflow ;};_bag :=(*_fae )[len (*_fae )-1-_fcad .Val ];_cfc =_fae .Push (_bag .Duplicate ());return _cfc ;};func (_bae *PSOperand )pop (_bba *PSStack )error {_ ,_ggae :=_bba .Pop ();if _ggae !=nil {return _ggae ;};return nil ;};func _dgad (_acd int )int {if _acd < 0{return -_acd ;};return _acd ;};
+
+// Push pushes an object on top of the stack.
+func (_bfc *PSStack )Push (obj PSObject )error {if len (*_bfc )> 100{return ErrStackOverflow ;};*_bfc =append (*_bfc ,obj );return nil ;};
+
+// PSReal represents a real number.
+type PSReal struct{Val float64 ;};
+
+// PSInteger represents an integer.
+type PSInteger struct{Val int ;};
+
+// PopInteger specificially pops an integer from the top of the stack, returning the value as an int.
+func (_fecf *PSStack )PopInteger ()(int ,error ){_adda ,_ggeg :=_fecf .Pop ();if _ggeg !=nil {return 0,_ggeg ;};if _ddgc ,_eag :=_adda .(*PSInteger );_eag {return _ddgc .Val ,nil ;};return 0,ErrTypeCheck ;};
 
 // PSProgram defines a Postscript program which is a series of PS objects (arguments, commands, programs etc).
 type PSProgram []PSObject ;
 
-// Execute executes the program for an input parameters `objects` and returns a slice of output objects.
-func (_ab *PSExecutor )Execute (objects []PSObject )([]PSObject ,error ){for _ ,_eaa :=range objects {_fc :=_ab .Stack .Push (_eaa );if _fc !=nil {return nil ,_fc ;};};_bc :=_ab ._ce .Exec (_ab .Stack );if _bc !=nil {_bb .Log .Debug ("\u0045x\u0065c\u0020\u0066\u0061\u0069\u006c\u0065\u0064\u003a\u0020\u0025\u0076",_bc );return nil ,_bc ;};_ee :=[]PSObject (*_ab .Stack );_ab .Stack .Empty ();return _ee ,nil ;};
-
-// PSReal represents a real number.
-type PSReal struct{Val float64 ;};func (_dfbf *PSOperand )xor (_eaff *PSStack )error {_cgee ,_gef :=_eaff .Pop ();if _gef !=nil {return _gef ;};_cbga ,_gef :=_eaff .Pop ();if _gef !=nil {return _gef ;};if _cbeb ,_fcfc :=_cgee .(*PSBoolean );_fcfc {_efcc ,_ddga :=_cbga .(*PSBoolean );if !_ddga {return ErrTypeCheck ;};_gef =_eaff .Push (MakeBool (_cbeb .Val !=_efcc .Val ));return _gef ;};if _cfee ,_cfgg :=_cgee .(*PSInteger );_cfgg {_dfce ,_cdga :=_cbga .(*PSInteger );if !_cdga {return ErrTypeCheck ;};_gef =_eaff .Push (MakeInteger (_cfee .Val ^_dfce .Val ));return _gef ;};return ErrTypeCheck ;};
-
-// MakeBool returns a new PSBoolean object initialized with `val`.
-func MakeBool (val bool )*PSBoolean {_bgbg :=PSBoolean {};_bgbg .Val =val ;return &_bgbg };func (_cbfc *PSOperand )mul (_ffef *PSStack )error {_cggd ,_bce :=_ffef .Pop ();if _bce !=nil {return _bce ;};_cdbe ,_bce :=_ffef .Pop ();if _bce !=nil {return _bce ;};_acge ,_ecc :=_cggd .(*PSReal );_cegg ,_efce :=_cggd .(*PSInteger );if !_ecc &&!_efce {return ErrTypeCheck ;};_dag ,_abba :=_cdbe .(*PSReal );_aeb ,_dgba :=_cdbe .(*PSInteger );if !_abba &&!_dgba {return ErrTypeCheck ;};if _efce &&_dgba {_faa :=_cegg .Val *_aeb .Val ;_faf :=_ffef .Push (MakeInteger (_faa ));return _faf ;};var _dbcc float64 =0;if _ecc {_dbcc =_acge .Val ;}else {_dbcc =float64 (_cegg .Val );};if _abba {_dbcc *=_dag .Val ;}else {_dbcc *=float64 (_aeb .Val );};_bce =_ffef .Push (MakeReal (_dbcc ));return _bce ;};var ErrTypeCheck =_b .New ("\u0074\u0079p\u0065\u0020\u0063h\u0065\u0063\u006b\u0020\u0065\u0072\u0072\u006f\u0072");func (_ff *PSOperand )eq (_ggaf *PSStack )error {_dab ,_aeg :=_ggaf .Pop ();if _aeg !=nil {return _aeg ;};_agcd ,_aeg :=_ggaf .Pop ();if _aeg !=nil {return _aeg ;};_ggf ,_dgc :=_dab .(*PSBoolean );_agd ,_agfa :=_agcd .(*PSBoolean );if _dgc ||_agfa {var _gcd error ;if _dgc &&_agfa {_gcd =_ggaf .Push (MakeBool (_ggf .Val ==_agd .Val ));}else {_gcd =_ggaf .Push (MakeBool (false ));};return _gcd ;};var _ebe float64 ;var _dfb float64 ;if _dbf ,_eaac :=_dab .(*PSInteger );_eaac {_ebe =float64 (_dbf .Val );}else if _edd ,_cbb :=_dab .(*PSReal );_cbb {_ebe =_edd .Val ;}else {return ErrTypeCheck ;};if _ecb ,_acg :=_agcd .(*PSInteger );_acg {_dfb =float64 (_ecb .Val );}else if _gac ,_add :=_agcd .(*PSReal );_add {_dfb =_gac .Val ;}else {return ErrTypeCheck ;};if _be .Abs (_dfb -_ebe )< _eaf {_aeg =_ggaf .Push (MakeBool (true ));}else {_aeg =_ggaf .Push (MakeBool (false ));};return _aeg ;};func (_cgfc *PSOperand )gt (_gfg *PSStack )error {_gbde ,_bca :=_gfg .PopNumberAsFloat64 ();if _bca !=nil {return _bca ;};_cge ,_bca :=_gfg .PopNumberAsFloat64 ();if _bca !=nil {return _bca ;};if _be .Abs (_cge -_gbde )< _eaf {_bfgd :=_gfg .Push (MakeBool (false ));return _bfgd ;}else if _cge > _gbde {_bgf :=_gfg .Push (MakeBool (true ));return _bgf ;}else {_aedg :=_gfg .Push (MakeBool (false ));return _aedg ;};};func (_cdgd *PSOperand )floor (_adf *PSStack )error {_cfbb ,_fgfa :=_adf .Pop ();if _fgfa !=nil {return _fgfa ;};if _beg ,_bba :=_cfbb .(*PSReal );_bba {_fgfa =_adf .Push (MakeReal (_be .Floor (_beg .Val )));}else if _dcg ,_agb :=_cfbb .(*PSInteger );_agb {_fgfa =_adf .Push (MakeInteger (_dcg .Val ));}else {return ErrTypeCheck ;};return _fgfa ;};var ErrStackOverflow =_b .New ("\u0073\u0074\u0061\u0063\u006b\u0020\u006f\u0076\u0065r\u0066\u006c\u006f\u0077");func (_bbd *PSBoolean )String ()string {return _c .Sprintf ("\u0025\u0076",_bbd .Val )};func (_fg *PSOperand )String ()string {return _c .Sprintf ("\u0025\u0073",*_fg )};func (_cdg *PSBoolean )DebugString ()string {return _c .Sprintf ("\u0062o\u006f\u006c\u003a\u0025\u0076",_cdg .Val );};
-
-// PSParser is a basic Postscript parser.
-type PSParser struct{_bddg *_dg .Reader };func (_bad *PSParser )parseNumber ()(PSObject ,error ){_fbdg ,_fbfg :=_a .ParseNumber (_bad ._bddg );if _fbfg !=nil {return nil ,_fbfg ;};switch _fffg :=_fbdg .(type ){case *_a .PdfObjectFloat :return MakeReal (float64 (*_fffg )),nil ;case *_a .PdfObjectInteger :return MakeInteger (int (*_fffg )),nil ;};return nil ,_c .Errorf ("\u0075n\u0068\u0061\u006e\u0064\u006c\u0065\u0064\u0020\u006e\u0075\u006db\u0065\u0072\u0020\u0074\u0079\u0070\u0065\u0020\u0025\u0054",_fbdg );};func (_deed *PSOperand )abs (_ca *PSStack )error {_gf ,_cec :=_ca .Pop ();if _cec !=nil {return _cec ;};if _bbb ,_ad :=_gf .(*PSReal );_ad {_afd :=_bbb .Val ;if _afd < 0{_cec =_ca .Push (MakeReal (-_afd ));}else {_cec =_ca .Push (MakeReal (_afd ));};}else if _ga ,_bd :=_gf .(*PSInteger );_bd {_bdg :=_ga .Val ;if _bdg < 0{_cec =_ca .Push (MakeInteger (-_bdg ));}else {_cec =_ca .Push (MakeInteger (_bdg ));};}else {return ErrTypeCheck ;};return _cec ;};
-
-// PopNumberAsFloat64 pops and return the numeric value of the top of the stack as a float64.
-// Real or integer only.
-func (_ccd *PSStack )PopNumberAsFloat64 ()(float64 ,error ){_fdgf ,_bbab :=_ccd .Pop ();if _bbab !=nil {return 0,_bbab ;};if _edff ,_aabf :=_fdgf .(*PSReal );_aabf {return _edff .Val ,nil ;}else if _dfaa ,_fdgb :=_fdgf .(*PSInteger );_fdgb {return float64 (_dfaa .Val ),nil ;}else {return 0,ErrTypeCheck ;};};
-
-// Parse parses the postscript and store as a program that can be executed.
-func (_ggc *PSParser )Parse ()(*PSProgram ,error ){_ggc .skipSpaces ();_fgac ,_bfe :=_ggc ._bddg .Peek (2);if _bfe !=nil {return nil ,_bfe ;};if _fgac [0]!='{'{return nil ,_b .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0050\u0053\u0020\u0050\u0072\u006f\u0067\u0072\u0061\u006d\u0020\u006e\u006f\u0074\u0020\u0073t\u0061\u0072\u0074\u0069\u006eg\u0020\u0077i\u0074\u0068\u0020\u007b");};_geba ,_bfe :=_ggc .parseFunction ();if _bfe !=nil &&_bfe !=_d .EOF {return nil ,_bfe ;};return _geba ,_bfe ;};func (_eee *PSOperand )lt (_eeb *PSStack )error {_ffe ,_gdd :=_eeb .PopNumberAsFloat64 ();if _gdd !=nil {return _gdd ;};_eaba ,_gdd :=_eeb .PopNumberAsFloat64 ();if _gdd !=nil {return _gdd ;};if _be .Abs (_eaba -_ffe )< _eaf {_aaa :=_eeb .Push (MakeBool (false ));return _aaa ;}else if _eaba < _ffe {_ddg :=_eeb .Push (MakeBool (true ));return _ddg ;}else {_ffc :=_eeb .Push (MakeBool (false ));return _ffc ;};};
-
-// NewPSExecutor returns an initialized PSExecutor for an input `program`.
-func NewPSExecutor (program *PSProgram )*PSExecutor {_cd :=&PSExecutor {};_cd .Stack =NewPSStack ();_cd ._ce =program ;return _cd ;};func (_aace *PSOperand )ne (_aag *PSStack )error {_beabf :=_aace .eq (_aag );if _beabf !=nil {return _beabf ;};_beabf =_aace .not (_aag );return _beabf ;};
-
-// PopInteger specificially pops an integer from the top of the stack, returning the value as an int.
-func (_fgab *PSStack )PopInteger ()(int ,error ){_aged ,_dccg :=_fgab .Pop ();if _dccg !=nil {return 0,_dccg ;};if _aec ,_gecd :=_aged .(*PSInteger );_gecd {return _aec .Val ,nil ;};return 0,ErrTypeCheck ;};func (_cba *PSOperand )and (_bg *PSStack )error {_fdf ,_ecfe :=_bg .Pop ();if _ecfe !=nil {return _ecfe ;};_afe ,_ecfe :=_bg .Pop ();if _ecfe !=nil {return _ecfe ;};if _feg ,_adc :=_fdf .(*PSBoolean );_adc {_egea ,_fb :=_afe .(*PSBoolean );if !_fb {return ErrTypeCheck ;};_ecfe =_bg .Push (MakeBool (_feg .Val &&_egea .Val ));return _ecfe ;};if _bbbf ,_cgf :=_fdf .(*PSInteger );_cgf {_fbd ,_beab :=_afe .(*PSInteger );if !_beab {return ErrTypeCheck ;};_ecfe =_bg .Push (MakeInteger (_bbbf .Val &_fbd .Val ));return _ecfe ;};return ErrTypeCheck ;};func (_ag *PSInteger )DebugString ()string {return _c .Sprintf ("\u0069\u006e\u0074\u003a\u0025\u0064",_ag .Val );};
+// String returns a string representation of the stack.
+func (_dgbcd *PSStack )String ()string {_dgfe :="\u005b\u0020";for _ ,_gac :=range *_dgbcd {_dgfe +=_gac .String ();_dgfe +="\u0020";};_dgfe +="\u005d";return _dgfe ;};func (_deb *PSOperand )xor (_cee *PSStack )error {_gbbb ,_bddc :=_cee .Pop ();if _bddc !=nil {return _bddc ;};_beg ,_bddc :=_cee .Pop ();if _bddc !=nil {return _bddc ;};if _fea ,_aae :=_gbbb .(*PSBoolean );_aae {_afcg ,_deg :=_beg .(*PSBoolean );if !_deg {return ErrTypeCheck ;};_bddc =_cee .Push (MakeBool (_fea .Val !=_afcg .Val ));return _bddc ;};if _fdbe ,_agbe :=_gbbb .(*PSInteger );_agbe {_edgc ,_ccg :=_beg .(*PSInteger );if !_ccg {return ErrTypeCheck ;};_bddc =_cee .Push (MakeInteger (_fdbe .Val ^_edgc .Val ));return _bddc ;};return ErrTypeCheck ;};func (_fa *PSProgram )DebugString ()string {_gf :="\u007b\u0020";for _ ,_fge :=range *_fa {_gf +=_fge .DebugString ();_gf +="\u0020";};_gf +="\u007d";return _gf ;};func (_gde *PSOperand )add (_gge *PSStack )error {_ad ,_dd :=_gge .Pop ();if _dd !=nil {return _dd ;};_gcg ,_dd :=_gge .Pop ();if _dd !=nil {return _dd ;};_gcef ,_gb :=_ad .(*PSReal );_cgdc ,_fca :=_ad .(*PSInteger );if !_gb &&!_fca {return ErrTypeCheck ;};_gea ,_aefa :=_gcg .(*PSReal );_bbb ,_dge :=_gcg .(*PSInteger );if !_aefa &&!_dge {return ErrTypeCheck ;};if _fca &&_dge {_bbc :=_cgdc .Val +_bbb .Val ;_de :=_gge .Push (MakeInteger (_bbc ));return _de ;};var _eebb float64 =0;if _gb {_eebb =_gcef .Val ;}else {_eebb =float64 (_cgdc .Val );};if _aefa {_eebb +=_gea .Val ;}else {_eebb +=float64 (_bbb .Val );};_dd =_gge .Push (MakeReal (_eebb ));return _dd ;};
 
 // Empty empties the stack.
-func (_gfgc *PSStack )Empty (){*_gfgc =[]PSObject {}};func (_cbf *PSOperand )ifCondition (_cbbe *PSStack )error {_agee ,_dga :=_cbbe .Pop ();if _dga !=nil {return _dga ;};_egeb ,_dga :=_cbbe .Pop ();if _dga !=nil {return _dga ;};_ddd ,_gcg :=_agee .(*PSProgram );if !_gcg {return ErrTypeCheck ;};_eec ,_gcg :=_egeb .(*PSBoolean );if !_gcg {return ErrTypeCheck ;};if _eec .Val {_bcde :=_ddd .Exec (_cbbe );return _bcde ;};return nil ;};
+func (_ddg *PSStack )Empty (){*_ddg =[]PSObject {}};
 
-// MakeInteger returns a new PSInteger object initialized with `val`.
-func MakeInteger (val int )*PSInteger {_fefd :=PSInteger {};_fefd .Val =val ;return &_fefd };func (_fea *PSOperand )neg (_ade *PSStack )error {_gfa ,_cgfg :=_ade .Pop ();if _cgfg !=nil {return _cgfg ;};if _efg ,_bdd :=_gfa .(*PSReal );_bdd {_cgfg =_ade .Push (MakeReal (-_efg .Val ));return _cgfg ;}else if _gec ,_aebe :=_gfa .(*PSInteger );_aebe {_cgfg =_ade .Push (MakeInteger (-_gec .Val ));return _cgfg ;}else {return ErrTypeCheck ;};};func (_eae *PSReal )Duplicate ()PSObject {_eef :=PSReal {};_eef .Val =_eae .Val ;return &_eef };func (_cdggd *PSOperand )cvi (_abae *PSStack )error {_gd ,_bcd :=_abae .Pop ();if _bcd !=nil {return _bcd ;};if _fabg ,_abb :=_gd .(*PSReal );_abb {_ddf :=int (_fabg .Val );_bcd =_abae .Push (MakeInteger (_ddf ));}else if _bdgd ,_cbdc :=_gd .(*PSInteger );_cbdc {_gfd :=_bdgd .Val ;_bcd =_abae .Push (MakeInteger (_gfd ));}else {return ErrTypeCheck ;};return _bcd ;};var ErrUnsupportedOperand =_b .New ("\u0075\u006e\u0073\u0075pp\u006f\u0072\u0074\u0065\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064");func (_dc *PSOperand )add (_ge *PSStack )error {_fac ,_gbe :=_ge .Pop ();if _gbe !=nil {return _gbe ;};_egf ,_gbe :=_ge .Pop ();if _gbe !=nil {return _gbe ;};_dba ,_bbbg :=_fac .(*PSReal );_agf ,_bdf :=_fac .(*PSInteger );if !_bbbg &&!_bdf {return ErrTypeCheck ;};_cbd ,_gbd :=_egf .(*PSReal );_ecf ,_eb :=_egf .(*PSInteger );if !_gbd &&!_eb {return ErrTypeCheck ;};if _bdf &&_eb {_ef :=_agf .Val +_ecf .Val ;_bfg :=_ge .Push (MakeInteger (_ef ));return _bfg ;};var _ed float64 =0;if _bbbg {_ed =_dba .Val ;}else {_ed =float64 (_agf .Val );};if _gbd {_ed +=_cbd .Val ;}else {_ed +=float64 (_ecf .Val );};_gbe =_ge .Push (MakeReal (_ed ));return _gbe ;};
+// NewPSExecutor returns an initialized PSExecutor for an input `program`.
+func NewPSExecutor (program *PSProgram )*PSExecutor {_ge :=&PSExecutor {};_ge .Stack =NewPSStack ();_ge ._gc =program ;return _ge ;};
 
-// PSExecutor has its own execution stack and is used to executre a PS routine (program).
-type PSExecutor struct{Stack *PSStack ;_ce *PSProgram ;};func (_fcf *PSOperand )le (_bbfb *PSStack )error {_fcb ,_fbbb :=_bbfb .PopNumberAsFloat64 ();if _fbbb !=nil {return _fbbb ;};_gfdg ,_fbbb :=_bbfb .PopNumberAsFloat64 ();if _fbbb !=nil {return _fbbb ;};if _be .Abs (_gfdg -_fcb )< _eaf {_eba :=_bbfb .Push (MakeBool (true ));return _eba ;}else if _gfdg < _fcb {_gdg :=_bbfb .Push (MakeBool (true ));return _gdg ;}else {_fdc :=_bbfb .Push (MakeBool (false ));return _fdc ;};};func (_ddb *PSOperand )cvr (_bbdf *PSStack )error {_fcg ,_gae :=_bbdf .Pop ();if _gae !=nil {return _gae ;};if _gdb ,_fcga :=_fcg .(*PSReal );_fcga {_gae =_bbdf .Push (MakeReal (_gdb .Val ));}else if _cfb ,_gda :=_fcg .(*PSInteger );_gda {_gae =_bbdf .Push (MakeReal (float64 (_cfb .Val )));}else {return ErrTypeCheck ;};return _gae ;};func (_bacaa *PSParser )parseBool ()(*PSBoolean ,error ){_aegb ,_ebfg :=_bacaa ._bddg .Peek (4);if _ebfg !=nil {return MakeBool (false ),_ebfg ;};if (len (_aegb )>=4)&&(string (_aegb [:4])=="\u0074\u0072\u0075\u0065"){_bacaa ._bddg .Discard (4);return MakeBool (true ),nil ;};_aegb ,_ebfg =_bacaa ._bddg .Peek (5);if _ebfg !=nil {return MakeBool (false ),_ebfg ;};if (len (_aegb )>=5)&&(string (_aegb [:5])=="\u0066\u0061\u006cs\u0065"){_bacaa ._bddg .Discard (5);return MakeBool (false ),nil ;};return MakeBool (false ),_b .New ("\u0075n\u0065\u0078\u0070\u0065c\u0074\u0065\u0064\u0020\u0062o\u006fl\u0065a\u006e\u0020\u0073\u0074\u0072\u0069\u006eg");};func (_cb *PSReal )DebugString ()string {return _c .Sprintf ("\u0072e\u0061\u006c\u003a\u0025\u002e\u0035f",_cb .Val );};func (_dee *PSBoolean )Duplicate ()PSObject {_age :=PSBoolean {};_age .Val =_dee .Val ;return &_age };func (_ac *PSReal )String ()string {return _c .Sprintf ("\u0025\u002e\u0035\u0066",_ac .Val )};const _eaf =0.000001;func (_cf *PSProgram )String ()string {_cfe :="\u007b\u0020";for _ ,_dae :=range *_cf {_cfe +=_dae .String ();_cfe +="\u0020";};_cfe +="\u007d";return _cfe ;};func (_bef *PSOperand )exch (_ebf *PSStack )error {_gcfe ,_gcdb :=_ebf .Pop ();if _gcdb !=nil {return _gcdb ;};_efc ,_gcdb :=_ebf .Pop ();if _gcdb !=nil {return _gcdb ;};_gcdb =_ebf .Push (_gcfe );if _gcdb !=nil {return _gcdb ;};_gcdb =_ebf .Push (_efc );return _gcdb ;};
-
-// NewPSProgram returns an empty, initialized PSProgram.
-func NewPSProgram ()*PSProgram {return &PSProgram {}};func (_geab *PSOperand )index (_ccb *PSStack )error {_bbef ,_cega :=_ccb .Pop ();if _cega !=nil {return _cega ;};_fbb ,_abc :=_bbef .(*PSInteger );if !_abc {return ErrTypeCheck ;};if _fbb .Val < 0{return ErrRangeCheck ;};if _fbb .Val > len (*_ccb )-1{return ErrStackUnderflow ;};_bbee :=(*_ccb )[len (*_ccb )-1-_fbb .Val ];_cega =_ccb .Push (_bbee .Duplicate ());return _cega ;};
+// DebugString returns a descriptive string representation of the stack - intended for debugging.
+func (_dcb *PSStack )DebugString ()string {_cgg :="\u005b\u0020";for _ ,_bfab :=range *_dcb {_cgg +=_bfab .DebugString ();_cgg +="\u0020";};_cgg +="\u005d";return _cgg ;};
 
 // Pop pops an object from the top of the stack.
-func (_dde *PSStack )Pop ()(PSObject ,error ){if len (*_dde )< 1{return nil ,ErrStackUnderflow ;};_gdde :=(*_dde )[len (*_dde )-1];*_dde =(*_dde )[0:len (*_dde )-1];return _gdde ,nil ;};func (_eg *PSInteger )String ()string {return _c .Sprintf ("\u0025\u0064",_eg .Val )};func (_feab *PSOperand )sub (_fde *PSStack )error {_cbde ,_ggag :=_fde .Pop ();if _ggag !=nil {return _ggag ;};_bga ,_ggag :=_fde .Pop ();if _ggag !=nil {return _ggag ;};_egc ,_cff :=_cbde .(*PSReal );_cca ,_fce :=_cbde .(*PSInteger );if !_cff &&!_fce {return ErrTypeCheck ;};_gcag ,_dggb :=_bga .(*PSReal );_baca ,_cdbg :=_bga .(*PSInteger );if !_dggb &&!_cdbg {return ErrTypeCheck ;};if _fce &&_cdbg {_acgb :=_baca .Val -_cca .Val ;_bgfag :=_fde .Push (MakeInteger (_acgb ));return _bgfag ;};var _gcb float64 =0;if _dggb {_gcb =_gcag .Val ;}else {_gcb =float64 (_baca .Val );};if _cff {_gcb -=_egc .Val ;}else {_gcb -=float64 (_cca .Val );};_ggag =_fde .Push (MakeReal (_gcb ));return _ggag ;};func (_cgg *PSOperand )log (_bge *PSStack )error {_affb ,_ddbb :=_bge .PopNumberAsFloat64 ();if _ddbb !=nil {return _ddbb ;};_daa :=_be .Log10 (_affb );_ddbb =_bge .Push (MakeReal (_daa ));return _ddbb ;};
-
-// PSOperand represents a Postscript operand (text string).
-type PSOperand string ;
-
-// PSInteger represents an integer.
-type PSInteger struct{Val int ;};func (_cfd *PSOperand )ge (_fag *PSStack )error {_ecg ,_cad :=_fag .PopNumberAsFloat64 ();if _cad !=nil {return _cad ;};_eabb ,_cad :=_fag .PopNumberAsFloat64 ();if _cad !=nil {return _cad ;};if _be .Abs (_eabb -_ecg )< _eaf {_ecgc :=_fag .Push (MakeBool (true ));return _ecgc ;}else if _eabb > _ecg {_fgd :=_fag .Push (MakeBool (true ));return _fgd ;}else {_eaab :=_fag .Push (MakeBool (false ));return _eaab ;};};func (_cda *PSOperand )truncate (_ddac *PSStack )error {_adfe ,_dac :=_ddac .Pop ();if _dac !=nil {return _dac ;};if _dbb ,_ddff :=_adfe .(*PSReal );_ddff {_gbc :=int (_dbb .Val );_dac =_ddac .Push (MakeReal (float64 (_gbc )));}else if _ebdf ,_edf :=_adfe .(*PSInteger );_edf {_dac =_ddac .Push (MakeInteger (_ebdf .Val ));}else {return ErrTypeCheck ;};return _dac ;};func (_ecgca *PSOperand )pop (_fdcg *PSStack )error {_ ,_ddgf :=_fdcg .Pop ();if _ddgf !=nil {return _ddgf ;};return nil ;};
-
-// PSStack defines a stack of PSObjects. PSObjects can be pushed on or pull from the stack.
-type PSStack []PSObject ;func (_eaad *PSOperand )div (_cbe *PSStack )error {_fga ,_gca :=_cbe .Pop ();if _gca !=nil {return _gca ;};_bgg ,_gca :=_cbe .Pop ();if _gca !=nil {return _gca ;};_fgf ,_dfeb :=_fga .(*PSReal );_fge ,_gde :=_fga .(*PSInteger );if !_dfeb &&!_gde {return ErrTypeCheck ;};if _dfeb &&_fgf .Val ==0{return ErrUndefinedResult ;};if _gde &&_fge .Val ==0{return ErrUndefinedResult ;};_afg ,_eab :=_bgg .(*PSReal );_daf ,_acb :=_bgg .(*PSInteger );if !_eab &&!_acb {return ErrTypeCheck ;};var _adb float64 =0;if _eab {_adb =_afg .Val ;}else {_adb =float64 (_daf .Val );};if _dfeb {_adb /=_fgf .Val ;}else {_adb /=float64 (_fge .Val );};_gca =_cbe .Push (MakeReal (_adb ));return _gca ;};func (_eabd *PSOperand )sqrt (_cfde *PSStack )error {_cbg ,_gabc :=_cfde .PopNumberAsFloat64 ();if _gabc !=nil {return _gabc ;};if _cbg < 0{return ErrRangeCheck ;};_ggae :=_be .Sqrt (_cbg );_gabc =_cfde .Push (MakeReal (_ggae ));return _gabc ;};func (_adfda *PSOperand )ifelse (_aff *PSStack )error {_bfdf ,_dgab :=_aff .Pop ();if _dgab !=nil {return _dgab ;};_ebd ,_dgab :=_aff .Pop ();if _dgab !=nil {return _dgab ;};_cab ,_dgab :=_aff .Pop ();if _dgab !=nil {return _dgab ;};_fdg ,_aaca :=_bfdf .(*PSProgram );if !_aaca {return ErrTypeCheck ;};_bdgg ,_aaca :=_ebd .(*PSProgram );if !_aaca {return ErrTypeCheck ;};_dabg ,_aaca :=_cab .(*PSBoolean );if !_aaca {return ErrTypeCheck ;};if _dabg .Val {_bfdfb :=_bdgg .Exec (_aff );return _bfdfb ;};_dgab =_fdg .Exec (_aff );return _dgab ;};
-
-// MakeReal returns a new PSReal object initialized with `val`.
-func MakeReal (val float64 )*PSReal {_bdgb :=PSReal {};_bdgb .Val =val ;return &_bdgb };func (_ceg *PSOperand )atan (_bdga *PSStack )error {_dgb ,_aca :=_bdga .PopNumberAsFloat64 ();if _aca !=nil {return _aca ;};_dfe ,_aca :=_bdga .PopNumberAsFloat64 ();if _aca !=nil {return _aca ;};if _dgb ==0{var _gc error ;if _dfe < 0{_gc =_bdga .Push (MakeReal (270));}else {_gc =_bdga .Push (MakeReal (90));};return _gc ;};_egeg :=_dfe /_dgb ;_fab :=_be .Atan (_egeg )*180/_be .Pi ;_aca =_bdga .Push (MakeReal (_fab ));return _aca ;};func (_fff *PSOperand )roll (_dcf *PSStack )error {_dgd ,_bbae :=_dcf .Pop ();if _bbae !=nil {return _bbae ;};_accc ,_bbae :=_dcf .Pop ();if _bbae !=nil {return _bbae ;};_gacf ,_dabgc :=_dgd .(*PSInteger );if !_dabgc {return ErrTypeCheck ;};_fbfb ,_dabgc :=_accc .(*PSInteger );if !_dabgc {return ErrTypeCheck ;};if _fbfb .Val < 0{return ErrRangeCheck ;};if _fbfb .Val ==0||_fbfb .Val ==1{return nil ;};if _fbfb .Val > len (*_dcf ){return ErrStackUnderflow ;};for _fegc :=0;_fegc < _ggcb (_gacf .Val );_fegc ++{var _cdgf []PSObject ;_cdgf =(*_dcf )[len (*_dcf )-(_fbfb .Val ):len (*_dcf )];if _gacf .Val > 0{_cac :=_cdgf [len (_cdgf )-1];_cdgf =append ([]PSObject {_cac },_cdgf [0:len (_cdgf )-1]...);}else {_cde :=_cdgf [len (_cdgf )-_fbfb .Val ];_cdgf =append (_cdgf [1:],_cde );};_fbc :=append ((*_dcf )[0:len (*_dcf )-_fbfb .Val ],_cdgf ...);_dcf =&_fbc ;};return nil ;};func _ggcb (_baf int )int {if _baf < 0{return -_baf ;};return _baf ;};var ErrUndefinedResult =_b .New ("\u0075\u006e\u0064\u0065fi\u006e\u0065\u0064\u0020\u0072\u0065\u0073\u0075\u006c\u0074\u0020\u0065\u0072\u0072o\u0072");func (_fae *PSOperand )mod (_fabc *PSStack )error {_dfdc ,_gace :=_fabc .Pop ();if _gace !=nil {return _gace ;};_fgb ,_gace :=_fabc .Pop ();if _gace !=nil {return _gace ;};_bag ,_gab :=_dfdc .(*PSInteger );if !_gab {return ErrTypeCheck ;};if _bag .Val ==0{return ErrUndefinedResult ;};_bdc ,_gab :=_fgb .(*PSInteger );if !_gab {return ErrTypeCheck ;};_dbg :=_bdc .Val %_bag .Val ;_gace =_fabc .Push (MakeInteger (_dbg ));return _gace ;};func (_gabe *PSParser )skipSpaces ()(int ,error ){_bgd :=0;for {_gbef ,_dad :=_gabe ._bddg .Peek (1);if _dad !=nil {return 0,_dad ;};if _a .IsWhiteSpace (_gbef [0]){_gabe ._bddg .ReadByte ();_bgd ++;}else {break ;};};return _bgd ,nil ;};
+func (_gcdg *PSStack )Pop ()(PSObject ,error ){if len (*_gcdg )< 1{return nil ,ErrStackUnderflow ;};_gbda :=(*_gcdg )[len (*_gcdg )-1];*_gcdg =(*_gcdg )[0:len (*_gcdg )-1];return _gbda ,nil ;};var ErrStackUnderflow =_e .New ("\u0073t\u0061c\u006b\u0020\u0075\u006e\u0064\u0065\u0072\u0066\u006c\u006f\u0077");
 
 // NewPSStack returns an initialized PSStack.
-func NewPSStack ()*PSStack {return &PSStack {}};func (_gce *PSOperand )exp (_gad *PSStack )error {_bcdf ,_aga :=_gad .PopNumberAsFloat64 ();if _aga !=nil {return _aga ;};_bee ,_aga :=_gad .PopNumberAsFloat64 ();if _aga !=nil {return _aga ;};if _be .Abs (_bcdf )< 1&&_bee < 0{return ErrUndefinedResult ;};_agcde :=_be .Pow (_bee ,_bcdf );_aga =_gad .Push (MakeReal (_agcde ));return _aga ;};func (_gfe *PSParser )parseFunction ()(*PSProgram ,error ){_fcfa ,_ :=_gfe ._bddg .ReadByte ();if _fcfa !='{'{return nil ,_b .New ("\u0069\u006ev\u0061\u006c\u0069d\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_aef :=NewPSProgram ();for {_gfe .skipSpaces ();_ecce ,_adeb :=_gfe ._bddg .Peek (2);if _adeb !=nil {if _adeb ==_d .EOF {break ;};return nil ,_adeb ;};_bb .Log .Trace ("\u0050e\u0065k\u0020\u0073\u0074\u0072\u0069\u006e\u0067\u003a\u0020\u0025\u0073",string (_ecce ));if _ecce [0]=='}'{_bb .Log .Trace ("\u0045\u004f\u0046 \u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");_gfe ._bddg .ReadByte ();break ;}else if _ecce [0]=='{'{_bb .Log .Trace ("\u0046u\u006e\u0063\u0074\u0069\u006f\u006e!");_gge ,_geg :=_gfe .parseFunction ();if _geg !=nil {return nil ,_geg ;};_aef .Append (_gge );}else if _a .IsDecimalDigit (_ecce [0])||(_ecce [0]=='-'&&_a .IsDecimalDigit (_ecce [1])){_bb .Log .Trace ("\u002d>\u004e\u0075\u006d\u0062\u0065\u0072!");_fggc ,_gcgf :=_gfe .parseNumber ();if _gcgf !=nil {return nil ,_gcgf ;};_aef .Append (_fggc );}else {_bb .Log .Trace ("\u002d>\u004fp\u0065\u0072\u0061\u006e\u0064 \u006f\u0072 \u0062\u006f\u006f\u006c\u003f");_ecce ,_ =_gfe ._bddg .Peek (5);_gddg :=string (_ecce );_bb .Log .Trace ("\u0050\u0065\u0065k\u0020\u0073\u0074\u0072\u003a\u0020\u0025\u0073",_gddg );if (len (_gddg )> 4)&&(_gddg [:5]=="\u0066\u0061\u006cs\u0065"){_gag ,_fgfg :=_gfe .parseBool ();if _fgfg !=nil {return nil ,_fgfg ;};_aef .Append (_gag );}else if (len (_gddg )> 3)&&(_gddg [:4]=="\u0074\u0072\u0075\u0065"){_abcf ,_efb :=_gfe .parseBool ();if _efb !=nil {return nil ,_efb ;};_aef .Append (_abcf );}else {_ceef ,_dcd :=_gfe .parseOperand ();if _dcd !=nil {return nil ,_dcd ;};_aef .Append (_ceef );};};};return _aef ,nil ;};func (_aed *PSOperand )ceiling (_aac *PSStack )error {_dd ,_dfc :=_aac .Pop ();if _dfc !=nil {return _dfc ;};if _cgdf ,_egg :=_dd .(*PSReal );_egg {_dfc =_aac .Push (MakeReal (_be .Ceil (_cgdf .Val )));}else if _agc ,_dea :=_dd .(*PSInteger );_dea {_dfc =_aac .Push (MakeInteger (_agc .Val ));}else {_dfc =ErrTypeCheck ;};return _dfc ;};func (_dfa *PSOperand )or (_fgg *PSStack )error {_cgge ,_fcc :=_fgg .Pop ();if _fcc !=nil {return _fcc ;};_dcgf ,_fcc :=_fgg .Pop ();if _fcc !=nil {return _fcc ;};if _cef ,_gebf :=_cgge .(*PSBoolean );_gebf {_bff ,_dgf :=_dcgf .(*PSBoolean );if !_dgf {return ErrTypeCheck ;};_fcc =_fgg .Push (MakeBool (_cef .Val ||_bff .Val ));return _fcc ;};if _bage ,_aaba :=_cgge .(*PSInteger );_aaba {_dcge ,_fbf :=_dcgf .(*PSInteger );if !_fbf {return ErrTypeCheck ;};_fcc =_fgg .Push (MakeInteger (_bage .Val |_dcge .Val ));return _fcc ;};return ErrTypeCheck ;};
-
-// NewPSParser returns a new instance of the PDF Postscript parser from input data.
-func NewPSParser (content []byte )*PSParser {_fbg :=PSParser {};_fgfe :=_ea .NewBuffer (content );_fbg ._bddg =_dg .NewReader (_fgfe );return &_fbg ;};
-
-// PSBoolean represents a boolean value.
-type PSBoolean struct{Val bool ;};
-
-// MakeOperand returns a new PSOperand object based on string `val`.
-func MakeOperand (val string )*PSOperand {_acae :=PSOperand (val );return &_acae };func (_g *PSProgram )DebugString ()string {_ded :="\u007b\u0020";for _ ,_gg :=range *_g {_ded +=_gg .DebugString ();_ded +="\u0020";};_ded +="\u007d";return _ded ;};
+func NewPSStack ()*PSStack {return &PSStack {}};
 
 // PSObject represents a postscript object.
 type PSObject interface{
@@ -106,14 +103,17 @@ Duplicate ()PSObject ;
 DebugString ()string ;
 
 // String returns a string representation of the PSObject.
-String ()string ;};
+String ()string ;};func (_fef *PSOperand )lt (_bbbf *PSStack )error {_dae ,_aegb :=_bbbf .PopNumberAsFloat64 ();if _aegb !=nil {return _aegb ;};_gfg ,_aegb :=_bbbf .PopNumberAsFloat64 ();if _aegb !=nil {return _aegb ;};if _a .Abs (_gfg -_dae )< _g {_aab :=_bbbf .Push (MakeBool (false ));return _aab ;}else if _gfg < _dae {_ceff :=_bbbf .Push (MakeBool (true ));return _ceff ;}else {_faa :=_bbbf .Push (MakeBool (false ));return _faa ;};};func (_dfg *PSOperand )sub (_cadc *PSStack )error {_fba ,_gcgeg :=_cadc .Pop ();if _gcgeg !=nil {return _gcgeg ;};_fffa ,_gcgeg :=_cadc .Pop ();if _gcgeg !=nil {return _gcgeg ;};_eebf ,_efga :=_fba .(*PSReal );_egbe ,_gdag :=_fba .(*PSInteger );if !_efga &&!_gdag {return ErrTypeCheck ;};_aceg ,_dada :=_fffa .(*PSReal );_dcgc ,_ccfa :=_fffa .(*PSInteger );if !_dada &&!_ccfa {return ErrTypeCheck ;};if _gdag &&_ccfa {_ffff :=_dcgc .Val -_egbe .Val ;_bde :=_cadc .Push (MakeInteger (_ffff ));return _bde ;};var _edee float64 =0;if _dada {_edee =_aceg .Val ;}else {_edee =float64 (_dcgc .Val );};if _efga {_edee -=_eebf .Val ;}else {_edee -=float64 (_egbe .Val );};_gcgeg =_cadc .Push (MakeReal (_edee ));return _gcgeg ;};func (_fgde *PSParser )parseBool ()(*PSBoolean ,error ){_aaec ,_acg :=_fgde ._dadg .Peek (4);if _acg !=nil {return MakeBool (false ),_acg ;};if (len (_aaec )>=4)&&(string (_aaec [:4])=="\u0074\u0072\u0075\u0065"){_fgde ._dadg .Discard (4);return MakeBool (true ),nil ;};_aaec ,_acg =_fgde ._dadg .Peek (5);if _acg !=nil {return MakeBool (false ),_acg ;};if (len (_aaec )>=5)&&(string (_aaec [:5])=="\u0066\u0061\u006cs\u0065"){_fgde ._dadg .Discard (5);return MakeBool (false ),nil ;};return MakeBool (false ),_e .New ("\u0075n\u0065\u0078\u0070\u0065c\u0074\u0065\u0064\u0020\u0062o\u006fl\u0065a\u006e\u0020\u0073\u0074\u0072\u0069\u006eg");};func (_cef *PSOperand )bitshift (_egb *PSStack )error {_efe ,_fbd :=_egb .PopInteger ();if _fbd !=nil {return _fbd ;};_fdb ,_fbd :=_egb .PopInteger ();if _fbd !=nil {return _fbd ;};var _gdcf int ;if _efe >=0{_gdcf =_fdb <<uint (_efe );}else {_gdcf =_fdb >>uint (-_efe );};_fbd =_egb .Push (MakeInteger (_gdcf ));return _fbd ;};func (_bdb *PSOperand )gt (_aca *PSStack )error {_cfbd ,_dfa :=_aca .PopNumberAsFloat64 ();if _dfa !=nil {return _dfa ;};_cgc ,_dfa :=_aca .PopNumberAsFloat64 ();if _dfa !=nil {return _dfa ;};if _a .Abs (_cgc -_cfbd )< _g {_ebff :=_aca .Push (MakeBool (false ));return _ebff ;}else if _cgc > _cfbd {_eac :=_aca .Push (MakeBool (true ));return _eac ;}else {_fgdc :=_aca .Push (MakeBool (false ));return _fgdc ;};};func (_eeea *PSProgram )Duplicate ()PSObject {_gec :=&PSProgram {};for _ ,_cdc :=range *_eeea {_gec .Append (_cdc .Duplicate ());};return _gec ;};
 
-// DebugString returns a descriptive string representation of the stack - intended for debugging.
-func (_ffa *PSStack )DebugString ()string {_cag :="\u005b\u0020";for _ ,_bcafb :=range *_ffa {_cag +=_bcafb .DebugString ();_cag +="\u0020";};_cag +="\u005d";return _cag ;};
+// PopNumberAsFloat64 pops and return the numeric value of the top of the stack as a float64.
+// Real or integer only.
+func (_bcf *PSStack )PopNumberAsFloat64 ()(float64 ,error ){_abed ,_ggaa :=_bcf .Pop ();if _ggaa !=nil {return 0,_ggaa ;};if _age ,_cacf :=_abed .(*PSReal );_cacf {return _age .Val ,nil ;}else if _baba ,_gegb :=_abed .(*PSInteger );_gegb {return float64 (_baba .Val ),nil ;}else {return 0,ErrTypeCheck ;};};func (_cdae *PSOperand )mul (_bfb *PSStack )error {_bcee ,_ebe :=_bfb .Pop ();if _ebe !=nil {return _ebe ;};_gdfb ,_ebe :=_bfb .Pop ();if _ebe !=nil {return _ebe ;};_gfe ,_aga :=_bcee .(*PSReal );_dffg ,_fgeb :=_bcee .(*PSInteger );if !_aga &&!_fgeb {return ErrTypeCheck ;};_aed ,_gcbfc :=_gdfb .(*PSReal );_addg ,_eaf :=_gdfb .(*PSInteger );if !_gcbfc &&!_eaf {return ErrTypeCheck ;};if _fgeb &&_eaf {_babe :=_dffg .Val *_addg .Val ;_agag :=_bfb .Push (MakeInteger (_babe ));return _agag ;};var _cfag float64 =0;if _aga {_cfag =_gfe .Val ;}else {_cfag =float64 (_dffg .Val );};if _gcbfc {_cfag *=_aed .Val ;}else {_cfag *=float64 (_addg .Val );};_ebe =_bfb .Push (MakeReal (_cfag ));return _ebe ;};
 
-// PSObjectArrayToFloat64Array converts []PSObject into a []float64 array. Each PSObject must represent a number,
-// otherwise a ErrTypeCheck error occurs.
-func PSObjectArrayToFloat64Array (objects []PSObject )([]float64 ,error ){var _bbe []float64 ;for _ ,_de :=range objects {if _bea ,_db :=_de .(*PSInteger );_db {_bbe =append (_bbe ,float64 (_bea .Val ));}else if _aa ,_ba :=_de .(*PSReal );_ba {_bbe =append (_bbe ,_aa .Val );}else {return nil ,ErrTypeCheck ;};};return _bbe ,nil ;};func (_fdcb *PSOperand )not (_fade *PSStack )error {_cfg ,_gaced :=_fade .Pop ();if _gaced !=nil {return _gaced ;};if _eca ,_ecdg :=_cfg .(*PSBoolean );_ecdg {_gaced =_fade .Push (MakeBool (!_eca .Val ));return _gaced ;}else if _bec ,_adca :=_cfg .(*PSInteger );_adca {_gaced =_fade .Push (MakeInteger (^_bec .Val ));return _gaced ;}else {return ErrTypeCheck ;};};func (_fad *PSOperand )dup (_bbg *PSStack )error {_fca ,_acc :=_bbg .Pop ();if _acc !=nil {return _acc ;};_acc =_bbg .Push (_fca );if _acc !=nil {return _acc ;};_acc =_bbg .Push (_fca .Duplicate ());return _acc ;};var ErrRangeCheck =_b .New ("\u0072\u0061\u006e\u0067\u0065\u0020\u0063\u0068\u0065\u0063\u006b\u0020e\u0072\u0072\u006f\u0072");func (_cdgg *PSProgram )Duplicate ()PSObject {_bf :=&PSProgram {};for _ ,_ec :=range *_cdgg {_bf .Append (_ec .Duplicate ());};return _bf ;};var ErrStackUnderflow =_b .New ("\u0073t\u0061c\u006b\u0020\u0075\u006e\u0064\u0065\u0072\u0066\u006c\u006f\u0077");
+// Exec executes the program, typically leaving output values on the stack.
+func (_cbf *PSProgram )Exec (stack *PSStack )error {for _ ,_fde :=range *_cbf {var _cgd error ;switch _ec :=_fde .(type ){case *PSInteger :_dgb :=_ec ;_cgd =stack .Push (_dgb );case *PSReal :_gdc :=_ec ;_cgd =stack .Push (_gdc );case *PSBoolean :_ecd :=_ec ;_cgd =stack .Push (_ecd );case *PSProgram :_ef :=_ec ;_cgd =stack .Push (_ef );case *PSOperand :_cf :=_ec ;_cgd =_cf .Exec (stack );default:return ErrTypeCheck ;};if _cgd !=nil {return _cgd ;};};return nil ;};func (_bga *PSOperand )cvi (_eca *PSStack )error {_fcg ,_beb :=_eca .Pop ();if _beb !=nil {return _beb ;};if _gbb ,_dgbc :=_fcg .(*PSReal );_dgbc {_agf :=int (_gbb .Val );_beb =_eca .Push (MakeInteger (_agf ));}else if _dgec ,_ade :=_fcg .(*PSInteger );_ade {_bcg :=_dgec .Val ;_beb =_eca .Push (MakeInteger (_bcg ));}else {return ErrTypeCheck ;};return _beb ;};func (_dac *PSOperand )ne (_dbb *PSStack )error {_agda :=_dac .eq (_dbb );if _agda !=nil {return _agda ;};_agda =_dac .not (_dbb );return _agda ;};
 
-// String returns a string representation of the stack.
-func (_baga *PSStack )String ()string {_effc :="\u005b\u0020";for _ ,_fcaa :=range *_baga {_effc +=_fcaa .String ();_effc +="\u0020";};_effc +="\u005d";return _effc ;};func (_cbdb *PSParser )parseOperand ()(*PSOperand ,error ){var _gebg []byte ;for {_cdc ,_gcff :=_cbdb ._bddg .Peek (1);if _gcff !=nil {if _gcff ==_d .EOF {break ;};return nil ,_gcff ;};if _a .IsDelimiter (_cdc [0]){break ;};if _a .IsWhiteSpace (_cdc [0]){break ;};_gfc ,_ :=_cbdb ._bddg .ReadByte ();_gebg =append (_gebg ,_gfc );};if len (_gebg )==0{return nil ,_b .New ("\u0069\u006e\u0076al\u0069\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064\u0020\u0028\u0065\u006d\u0070\u0074\u0079\u0029");};return MakeOperand (string (_gebg )),nil ;};
+// PSParser is a basic Postscript parser.
+type PSParser struct{_dadg *_c .Reader };var ErrRangeCheck =_e .New ("\u0072\u0061\u006e\u0067\u0065\u0020\u0063\u0068\u0065\u0063\u006b\u0020e\u0072\u0072\u006f\u0072");func (_gdfa *PSOperand )ifelse (_cae *PSStack )error {_fgaf ,_cbb :=_cae .Pop ();if _cbb !=nil {return _cbb ;};_ccd ,_cbb :=_cae .Pop ();if _cbb !=nil {return _cbb ;};_gda ,_cbb :=_cae .Pop ();if _cbb !=nil {return _cbb ;};_ffeb ,_fgfg :=_fgaf .(*PSProgram );if !_fgfg {return ErrTypeCheck ;};_fgfb ,_fgfg :=_ccd .(*PSProgram );if !_fgfg {return ErrTypeCheck ;};_bbe ,_fgfg :=_gda .(*PSBoolean );if !_fgfg {return ErrTypeCheck ;};if _bbe .Val {_ada :=_fgfb .Exec (_cae );return _ada ;};_cbb =_ffeb .Exec (_cae );return _cbb ;};
+
+// MakeReal returns a new PSReal object initialized with `val`.
+func MakeReal (val float64 )*PSReal {_fbac :=PSReal {};_fbac .Val =val ;return &_fbac };