prepare release

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 (_b "fmt";_fc "io";_f "os";_c "path/filepath";_e "runtime";_g "time";);
+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{}){};
 
-// Warning logs warning message.
-func (_df WriterLogger )Warning (format string ,args ...interface{}){if _df .LogLevel >=LogLevelWarning {_bgd :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_df .logToWriter (_df .Output ,_bgd ,format ,args ...);};};
+// Trace does nothing for dummy logger.
+func (DummyLogger )Trace (format string ,args ...interface{}){};
 
 // Trace logs trace message.
-func (_cf ConsoleLogger )Trace (format string ,args ...interface{}){if _cf .LogLevel >=LogLevelTrace {_dac :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_cf .output (_f .Stdout ,_dac ,format ,args ...);};};const _ad =9;
+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 ...);};
 
-// Error logs error message.
-func (_bgc ConsoleLogger )Error (format string ,args ...interface{}){if _bgc .LogLevel >=LogLevelError {_fb :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_bgc .output (_f .Stdout ,_fb ,format ,args ...);};};
-
-// Error does nothing for dummy logger.
-func (DummyLogger )Error (format string ,args ...interface{}){};
-
-// Info does nothing for dummy logger.
-func (DummyLogger )Info (format string ,args ...interface{}){};
-
-// Warning logs warning message.
-func (_bac ConsoleLogger )Warning (format string ,args ...interface{}){if _bac .LogLevel >=LogLevelWarning {_fcb :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_bac .output (_f .Stdout ,_fcb ,format ,args ...);};};
-
-// LogLevel is the verbosity level for logging.
-type LogLevel int ;func _fbb (_gaac _fc .Writer ,_bed string ,_bdd string ,_dc ...interface{}){_ ,_edf ,_ebe ,_cfb :=_e .Caller (3);if !_cfb {_edf ="\u003f\u003f\u003f";_ebe =0;}else {_edf =_c .Base (_edf );};_gfe :=_b .Sprintf ("\u0025s\u0020\u0025\u0073\u003a\u0025\u0064 ",_bed ,_edf ,_ebe )+_bdd +"\u000a";_b .Fprintf (_gaac ,_gfe ,_dc ...);};
-
-// NewWriterLogger creates new 'writer' logger.
-func NewWriterLogger (logLevel LogLevel ,writer _fc .Writer )*WriterLogger {_dg :=WriterLogger {Output :writer ,LogLevel :logLevel };return &_dg ;};func UtcTimeFormat (t _g .Time )string {return t .Format (_cag )+"\u0020\u0055\u0054\u0043"};
+// SetLogger sets 'logger' to be used by the unidoc unipdf library.
+func SetLogger (logger Logger ){Log =logger };
 
 // DummyLogger does nothing.
 type DummyLogger struct{};
 
-// Notice logs notice message.
-func (_ab WriterLogger )Notice (format string ,args ...interface{}){if _ab .LogLevel >=LogLevelNotice {_fde :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_ab .logToWriter (_ab .Output ,_fde ,format ,args ...);};};
+// 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";
 
-// NewConsoleLogger creates new console logger.
-func NewConsoleLogger (logLevel LogLevel )*ConsoleLogger {return &ConsoleLogger {LogLevel :logLevel }};const _aed =8;
+// 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 (_fbf WriterLogger )Trace (format string ,args ...interface{}){if _fbf .LogLevel >=LogLevelTrace {_ae :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_fbf .logToWriter (_fbf .Output ,_ae ,format ,args ...);};};
-
-// Notice does nothing for dummy logger.
-func (DummyLogger )Notice (format string ,args ...interface{}){};
-
-// SetLogger sets 'logger' to be used by the unidoc unipdf library.
-func SetLogger (logger Logger ){Log =logger };const (LogLevelTrace LogLevel =5;LogLevelDebug LogLevel =4;LogLevelInfo LogLevel =3;LogLevelNotice LogLevel =2;LogLevelWarning LogLevel =1;LogLevelError LogLevel =0;);
-
-// Debug logs debug message.
-func (_fd ConsoleLogger )Debug (format string ,args ...interface{}){if _fd .LogLevel >=LogLevelDebug {_db :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_fd .output (_f .Stdout ,_db ,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 (_bfgf WriterLogger )IsLogLevel (level LogLevel )bool {return _bfgf .LogLevel >=level };const _dbg =2020;
+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 (_d string ,_bb ...interface{});Warning (_ga string ,_da ...interface{});Notice (_fa string ,_eg ...interface{});Info (_fg string ,_bg ...interface{});Debug (_cb string ,_ba ...interface{});Trace (_bd string ,_bf ...interface{});IsLogLevel (_eb LogLevel )bool ;};
-
-// Info logs info message.
-func (_ge WriterLogger )Info (format string ,args ...interface{}){if _ge .LogLevel >=LogLevelInfo {_de :="\u005bI\u004e\u0046\u004f\u005d\u0020";_ge .logToWriter (_ge .Output ,_de ,format ,args ...);};};
-
-// Debug logs debug message.
-func (_fe WriterLogger )Debug (format string ,args ...interface{}){if _fe .LogLevel >=LogLevelDebug {_gd :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_fe .logToWriter (_fe .Output ,_gd ,format ,args ...);};};const _dge =50;
+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 (_egg ConsoleLogger )IsLogLevel (level LogLevel )bool {return _egg .LogLevel >=level };var ReleasedAt =_g .Date (_dbg ,_ad ,_gbg ,_aed ,_dge ,0,0,_g .UTC );
+func (_fg ConsoleLogger )IsLogLevel (level LogLevel )bool {return _fg .LogLevel >=level };const _cac =2020;
 
-// Debug does nothing for dummy logger.
-func (DummyLogger )Debug (format string ,args ...interface{}){};var Log Logger =DummyLogger {};
+// 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 {};
 
-// WriterLogger is the logger that writes data to the Output writer
-type WriterLogger struct{LogLevel LogLevel ;Output _fc .Writer ;};func (_ed ConsoleLogger )output (_bfg _fc .Writer ,_ce string ,_ca string ,_fgg ...interface{}){_fbb (_bfg ,_ce ,_ca ,_fgg ...);};const Version ="\u0033\u002e\u0031\u0031\u002e\u0031";
-
-// Error logs error message.
-func (_be WriterLogger )Error (format string ,args ...interface{}){if _be .LogLevel >=LogLevelError {_dga :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_be .logToWriter (_be .Output ,_dga ,format ,args ...);};};
-
-// Trace does nothing for dummy logger.
-func (DummyLogger )Trace (format string ,args ...interface{}){};
-
-// ConsoleLogger is a logger that writes logs to the 'os.Stdout'
-type ConsoleLogger struct{LogLevel LogLevel ;};
+// 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 (_cbb ConsoleLogger )Info (format string ,args ...interface{}){if _cbb .LogLevel >=LogLevelInfo {_ef :="\u005bI\u004e\u0046\u004f\u005d\u0020";_cbb .output (_f .Stdout ,_ef ,format ,args ...);};};const _gbg =14;const _cag ="\u0032\u0020\u004aan\u0075\u0061\u0072\u0079\u0020\u0032\u0030\u0030\u0036\u0020\u0061\u0074\u0020\u0031\u0035\u003a\u0030\u0034";func (_gaa WriterLogger )logToWriter (_bc _fc .Writer ,_gf string ,_abc string ,_ea ...interface{}){_fbb (_bc ,_gf ,_abc ,_ea );};
+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{}){};
+
+// 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 );
+
+// 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 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 ...);};};
+
+// 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 ...);};};
 
 // Notice logs notice message.
-func (_gb ConsoleLogger )Notice (format string ,args ...interface{}){if _gb .LogLevel >=LogLevelNotice {_af :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_gb .output (_f .Stdout ,_af ,format ,args ...);};};
+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 ...);};};
+
+// 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 ...);};};
+
+// 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 ...);};};

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 (_ee "fmt";_df "github.com/unidoc/unipdf/v3/contentstream";_f "github.com/unidoc/unipdf/v3/core";_eb "github.com/unidoc/unipdf/v3/internal/transform";_a "github.com/unidoc/unipdf/v3/model";_e "math";);
+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";);
 
-// LineEndingStyle defines the line ending style for lines.
-// The currently supported line ending styles are None, Arrow (ClosedArrow) and Butt.
-type LineEndingStyle int ;
-
-// PolyBezierCurve represents a composite curve that is the result of
-// joining multiple cubic Bezier curves.
-type PolyBezierCurve struct{Curves []CubicBezierCurve ;BorderWidth float64 ;BorderColor *_a .PdfColorDeviceRGB ;FillEnabled bool ;FillColor *_a .PdfColorDeviceRGB ;};
-
-// GetPolarAngle returns the angle the magnitude of the vector forms with the
-// positive X-axis going counterclockwise.
-func (_egab Vector )GetPolarAngle ()float64 {return _e .Atan2 (_egab .Dy ,_egab .Dx )};
-
-// RemovePoint removes the point at the index specified by number from the
-// path. The index is 1-based.
-func (_fcb Path )RemovePoint (number int )Path {if number < 1||number > len (_fcb .Points ){return _fcb ;};_bcg :=number -1;_fcb .Points =append (_fcb .Points [:_bcg ],_fcb .Points [_bcg +1:]...);return _fcb ;};
-
-// 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 (_ffe Polygon )Draw (gsName string )([]byte ,*_a .PdfRectangle ,error ){_ebc :=_df .NewContentCreator ();_ebc .Add_q ();_ffe .FillEnabled =_ffe .FillEnabled &&_ffe .FillColor !=nil ;if _ffe .FillEnabled {_ebc .Add_rg (_ffe .FillColor .R (),_ffe .FillColor .G (),_ffe .FillColor .B ());};_ffe .BorderEnabled =_ffe .BorderEnabled &&_ffe .BorderColor !=nil ;if _ffe .BorderEnabled {_ebc .Add_RG (_ffe .BorderColor .R (),_ffe .BorderColor .G (),_ffe .BorderColor .B ());_ebc .Add_w (_ffe .BorderWidth );};if len (gsName )> 1{_ebc .Add_gs (_f .PdfObjectName (gsName ));};_bfd :=NewPath ();for _ ,_fbd :=range _ffe .Points {for _bdc ,_eab :=range _fbd {_bfd =_bfd .AppendPoint (_eab );if _bdc ==0{_ebc .Add_m (_eab .X ,_eab .Y );}else {_ebc .Add_l (_eab .X ,_eab .Y );};};_ebc .Add_h ();};if _ffe .FillEnabled &&_ffe .BorderEnabled {_ebc .Add_B ();}else if _ffe .FillEnabled {_ebc .Add_f ();}else if _ffe .BorderEnabled {_ebc .Add_S ();};_ebc .Add_Q ();return _ebc .Bytes (),_bfd .GetBoundingBox ().ToPdfRectangle (),nil ;};
-
-// Copy returns a clone of the Bezier path.
-func (_cc CubicBezierPath )Copy ()CubicBezierPath {_ff :=CubicBezierPath {};_ff .Curves =[]CubicBezierCurve {};for _ ,_dc :=range _cc .Curves {_ff .Curves =append (_ff .Curves ,_dc );};return _ff ;};
-
-// Point represents a two-dimensional point.
-type Point struct{X float64 ;Y float64 ;};
-
-// ToPdfRectangle returns the bounding box as a PDF rectangle.
-func (_bac BoundingBox )ToPdfRectangle ()*_a .PdfRectangle {return &_a .PdfRectangle {Llx :_bac .X ,Lly :_bac .Y ,Urx :_bac .X +_bac .Width ,Ury :_bac .Y +_bac .Height };};
-
-// ToPdfRectangle returns the rectangle as a PDF rectangle.
-func (_bgc Rectangle )ToPdfRectangle ()*_a .PdfRectangle {return &_a .PdfRectangle {Llx :_bgc .X ,Lly :_bgc .Y ,Urx :_bgc .X +_bgc .Width ,Ury :_bgc .Y +_bgc .Height };};
-
-// Rotate returns a new Point at `p` rotated by `theta` degrees.
-func (_aa Point )Rotate (theta float64 )Point {_bgaa :=_eb .NewPoint (_aa .X ,_aa .Y ).Rotate (theta );return NewPoint (_bgaa .X ,_bgaa .Y );};func (_fcbb Point )String ()string {return _ee .Sprintf ("(\u0025\u002e\u0031\u0066\u002c\u0025\u002e\u0031\u0066\u0029",_fcbb .X ,_fcbb .Y );};
-
-// 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 *_df .ContentCreator ){for _def ,_ebd :=range path .Points {if _def ==0{creator .Add_m (_ebd .X ,_ebd .Y );}else {creator .Add_l (_ebd .X ,_ebd .Y );};};};
-
-// NewCubicBezierPath returns a new empty cubic Bezier path.
-func NewCubicBezierPath ()CubicBezierPath {_fe :=CubicBezierPath {};_fe .Curves =[]CubicBezierCurve {};return _fe ;};
-
-// Polyline defines a slice of points that are connected as straight lines.
-type Polyline struct{Points []Point ;LineColor *_a .PdfColorDeviceRGB ;LineWidth float64 ;};
-
-// LineStyle refers to how the line will be created.
-type LineStyle int ;
-
-// GetBounds returns the bounding box of the Bezier curve.
-func (_cg CubicBezierCurve )GetBounds ()_a .PdfRectangle {_db :=_cg .P0 .X ;_dg :=_cg .P0 .X ;_b :=_cg .P0 .Y ;_ad :=_cg .P0 .Y ;for _eg :=0.0;_eg <=1.0;_eg +=0.001{Rx :=_cg .P0 .X *_e .Pow (1-_eg ,3)+_cg .P1 .X *3*_eg *_e .Pow (1-_eg ,2)+_cg .P2 .X *3*_e .Pow (_eg ,2)*(1-_eg )+_cg .P3 .X *_e .Pow (_eg ,3);Ry :=_cg .P0 .Y *_e .Pow (1-_eg ,3)+_cg .P1 .Y *3*_eg *_e .Pow (1-_eg ,2)+_cg .P2 .Y *3*_e .Pow (_eg ,2)*(1-_eg )+_cg .P3 .Y *_e .Pow (_eg ,3);if Rx < _db {_db =Rx ;};if Rx > _dg {_dg =Rx ;};if Ry < _b {_b =Ry ;};if Ry > _ad {_ad =Ry ;};};_g :=_a .PdfRectangle {};_g .Llx =_db ;_g .Lly =_b ;_g .Urx =_dg ;_g .Ury =_ad ;return _g ;};
-
-// NewCubicBezierCurve returns a new cubic Bezier curve.
-func NewCubicBezierCurve (x0 ,y0 ,x1 ,y1 ,x2 ,y2 ,x3 ,y3 float64 )CubicBezierCurve {_c :=CubicBezierCurve {};_c .P0 =NewPoint (x0 ,y0 );_c .P1 =NewPoint (x1 ,y1 );_c .P2 =NewPoint (x2 ,y2 );_c .P3 =NewPoint (x3 ,y3 );return _c ;};
-
-// Length returns the number of points in the path.
-func (_gf Path )Length ()int {return len (_gf .Points )};
-
-// AddVector adds vector to a point.
-func (_bga Point )AddVector (v Vector )Point {_bga .X +=v .Dx ;_bga .Y +=v .Dy ;return _bga };
-
-// Flip changes the sign of the vector: -vector.
-func (_cb Vector )Flip ()Vector {_gdb :=_cb .Magnitude ();_bfb :=_cb .GetPolarAngle ();_cb .Dx =_gdb *_e .Cos (_bfb +_e .Pi );_cb .Dy =_gdb *_e .Sin (_bfb +_e .Pi );return _cb ;};
+// 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 ;};
 
 // 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 (_ab Circle )Draw (gsName string )([]byte ,*_a .PdfRectangle ,error ){_cga :=_ab .Width /2;_ge :=_ab .Height /2;if _ab .BorderEnabled {_cga -=_ab .BorderWidth /2;_ge -=_ab .BorderWidth /2;};_dfg :=0.551784;_dbb :=_cga *_dfg ;_ggad :=_ge *_dfg ;_de :=NewCubicBezierPath ();_de =_de .AppendCurve (NewCubicBezierCurve (-_cga ,0,-_cga ,_ggad ,-_dbb ,_ge ,0,_ge ));_de =_de .AppendCurve (NewCubicBezierCurve (0,_ge ,_dbb ,_ge ,_cga ,_ggad ,_cga ,0));_de =_de .AppendCurve (NewCubicBezierCurve (_cga ,0,_cga ,-_ggad ,_dbb ,-_ge ,0,-_ge ));_de =_de .AppendCurve (NewCubicBezierCurve (0,-_ge ,-_dbb ,-_ge ,-_cga ,-_ggad ,-_cga ,0));_de =_de .Offset (_cga ,_ge );if _ab .BorderEnabled {_de =_de .Offset (_ab .BorderWidth /2,_ab .BorderWidth /2);};if _ab .X !=0||_ab .Y !=0{_de =_de .Offset (_ab .X ,_ab .Y );};_ead :=_df .NewContentCreator ();_ead .Add_q ();if _ab .FillEnabled {_ead .Add_rg (_ab .FillColor .R (),_ab .FillColor .G (),_ab .FillColor .B ());};if _ab .BorderEnabled {_ead .Add_RG (_ab .BorderColor .R (),_ab .BorderColor .G (),_ab .BorderColor .B ());_ead .Add_w (_ab .BorderWidth );};if len (gsName )> 1{_ead .Add_gs (_f .PdfObjectName (gsName ));};DrawBezierPathWithCreator (_de ,_ead );_ead .Add_h ();if _ab .FillEnabled &&_ab .BorderEnabled {_ead .Add_B ();}else if _ab .FillEnabled {_ead .Add_f ();}else if _ab .BorderEnabled {_ead .Add_S ();};_ead .Add_Q ();_dee :=_de .GetBoundingBox ();if _ab .BorderEnabled {_dee .Height +=_ab .BorderWidth ;_dee .Width +=_ab .BorderWidth ;_dee .X -=_ab .BorderWidth /2;_dee .Y -=_ab .BorderWidth /2;};return _ead .Bytes (),_dee .ToPdfRectangle (),nil ;};
+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 ;};
 
-// 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 (_fgf Line )Draw (gsName string )([]byte ,*_a .PdfRectangle ,error ){_aff ,_dff :=_fgf .X1 ,_fgf .X2 ;_ged ,_dea :=_fgf .Y1 ,_fgf .Y2 ;_cge :=_dea -_ged ;_gc :=_dff -_aff ;_eba :=_e .Atan2 (_cge ,_gc );L :=_e .Sqrt (_e .Pow (_gc ,2.0)+_e .Pow (_cge ,2.0));_fa :=_fgf .LineWidth ;_dge :=_e .Pi ;_bace :=1.0;if _gc < 0{_bace *=-1.0;};if _cge < 0{_bace *=-1.0;};VsX :=_bace *(-_fa /2*_e .Cos (_eba +_dge /2));VsY :=_bace *(-_fa /2*_e .Sin (_eba +_dge /2)+_fa *_e .Sin (_eba +_dge /2));V1X :=VsX +_fa /2*_e .Cos (_eba +_dge /2);V1Y :=VsY +_fa /2*_e .Sin (_eba +_dge /2);V2X :=VsX +_fa /2*_e .Cos (_eba +_dge /2)+L *_e .Cos (_eba );V2Y :=VsY +_fa /2*_e .Sin (_eba +_dge /2)+L *_e .Sin (_eba );V3X :=VsX +_fa /2*_e .Cos (_eba +_dge /2)+L *_e .Cos (_eba )+_fa *_e .Cos (_eba -_dge /2);V3Y :=VsY +_fa /2*_e .Sin (_eba +_dge /2)+L *_e .Sin (_eba )+_fa *_e .Sin (_eba -_dge /2);V4X :=VsX +_fa /2*_e .Cos (_eba -_dge /2);V4Y :=VsY +_fa /2*_e .Sin (_eba -_dge /2);_dbad :=NewPath ();_dbad =_dbad .AppendPoint (NewPoint (V1X ,V1Y ));_dbad =_dbad .AppendPoint (NewPoint (V2X ,V2Y ));_dbad =_dbad .AppendPoint (NewPoint (V3X ,V3Y ));_dbad =_dbad .AppendPoint (NewPoint (V4X ,V4Y ));_eeb :=_fgf .LineEndingStyle1 ;_aba :=_fgf .LineEndingStyle2 ;_gb :=3*_fa ;_deee :=3*_fa ;_ggg :=(_deee -_fa )/2;if _aba ==LineEndingStyleArrow {_ca :=_dbad .GetPointNumber (2);_adbb :=NewVectorPolar (_gb ,_eba +_dge );_caf :=_ca .AddVector (_adbb );_gfg :=NewVectorPolar (_deee /2,_eba +_dge /2);_bff :=NewVectorPolar (_gb ,_eba );_dgg :=NewVectorPolar (_ggg ,_eba +_dge /2);_fgbe :=_caf .AddVector (_dgg );_gcf :=_bff .Add (_gfg .Flip ());_afa :=_fgbe .AddVector (_gcf );_fbde :=_gfg .Scale (2).Flip ().Add (_gcf .Flip ());_fec :=_afa .AddVector (_fbde );_ccd :=_caf .AddVector (NewVectorPolar (_fa ,_eba -_dge /2));_cfb :=NewPath ();_cfb =_cfb .AppendPoint (_dbad .GetPointNumber (1));_cfb =_cfb .AppendPoint (_caf );_cfb =_cfb .AppendPoint (_fgbe );_cfb =_cfb .AppendPoint (_afa );_cfb =_cfb .AppendPoint (_fec );_cfb =_cfb .AppendPoint (_ccd );_cfb =_cfb .AppendPoint (_dbad .GetPointNumber (4));_dbad =_cfb ;};if _eeb ==LineEndingStyleArrow {_cab :=_dbad .GetPointNumber (1);_bab :=_dbad .GetPointNumber (_dbad .Length ());_bba :=NewVectorPolar (_fa /2,_eba +_dge +_dge /2);_cfc :=_cab .AddVector (_bba );_fd :=NewVectorPolar (_gb ,_eba ).Add (NewVectorPolar (_deee /2,_eba +_dge /2));_ddd :=_cfc .AddVector (_fd );_faf :=NewVectorPolar (_ggg ,_eba -_dge /2);_dae :=_ddd .AddVector (_faf );_edc :=NewVectorPolar (_gb ,_eba );_ace :=_bab .AddVector (_edc );_fcg :=NewVectorPolar (_ggg ,_eba +_dge +_dge /2);_gbe :=_ace .AddVector (_fcg );_gba :=_cfc ;_aca :=NewPath ();_aca =_aca .AppendPoint (_cfc );_aca =_aca .AppendPoint (_ddd );_aca =_aca .AppendPoint (_dae );for _ ,_gd :=range _dbad .Points [1:len (_dbad .Points )-1]{_aca =_aca .AppendPoint (_gd );};_aca =_aca .AppendPoint (_ace );_aca =_aca .AppendPoint (_gbe );_aca =_aca .AppendPoint (_gba );_dbad =_aca ;};_fcbg :=_df .NewContentCreator ();_fcbg .Add_q ().Add_rg (_fgf .LineColor .R (),_fgf .LineColor .G (),_fgf .LineColor .B ());if len (gsName )> 1{_fcbg .Add_gs (_f .PdfObjectName (gsName ));};_dbad =_dbad .Offset (_fgf .X1 ,_fgf .Y1 );_fggb :=_dbad .GetBoundingBox ();DrawPathWithCreator (_dbad ,_fcbg );if _fgf .LineStyle ==LineStyleDashed {_fcbg .Add_d ([]int64 {1,1},0).Add_S ().Add_f ().Add_Q ();}else {_fcbg .Add_f ().Add_Q ();};return _fcbg .Bytes (),_fggb .ToPdfRectangle (),nil ;};
-
-// Add shifts the coordinates of the point with dx, dy and returns the result.
-func (_gga Point )Add (dx ,dy float64 )Point {_gga .X +=dx ;_gga .Y +=dy ;return _gga };
-
-// Path consists of straight line connections between each point defined in an array of points.
-type Path struct{Points []Point ;};
-
-// Rotate rotates the vector by the specified angle.
-func (_aeb Vector )Rotate (phi float64 )Vector {_gbg :=_aeb .Magnitude ();_dfd :=_aeb .GetPolarAngle ();return NewVectorPolar (_gbg ,_dfd +phi );};
-
-// FlipY flips the sign of the Dy component of the vector.
-func (_fece Vector )FlipY ()Vector {_fece .Dy =-_fece .Dy ;return _fece };
-
-// GetPointNumber returns the path point at the index specified by number.
-// The index is 1-based.
-func (_ae Path )GetPointNumber (number int )Point {if number < 1||number > len (_ae .Points ){return Point {};};return _ae .Points [number -1];};
-
-// NewVectorPolar returns a new vector calculated from the specified
-// magnitude and angle.
-func NewVectorPolar (length float64 ,theta float64 )Vector {_deg :=Vector {};_deg .Dx =length *_e .Cos (theta );_deg .Dy =length *_e .Sin (theta );return _deg ;};
+// 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 ;};
 
-// AppendPoint adds the specified point to the path.
-func (_bc Path )AppendPoint (point Point )Path {_bc .Points =append (_bc .Points ,point );return _bc };
-
-// NewVector returns a new vector with the direction specified by dx and dy.
-func NewVector (dx ,dy float64 )Vector {_baa :=Vector {};_baa .Dx =dx ;_baa .Dy =dy ;return _baa };const (LineStyleSolid LineStyle =0;LineStyleDashed LineStyle =1;);
-
-// 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 *_a .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineStyle LineStyle ;};
-
-// Add adds the specified vector to the current one and returns the result.
-func (_ddf Vector )Add (other Vector )Vector {_ddf .Dx +=other .Dx ;_ddf .Dy +=other .Dy ;return _ddf };
-
-// GetBoundingBox returns the bounding box of the Bezier path.
-func (_ac CubicBezierPath )GetBoundingBox ()Rectangle {_af :=Rectangle {};_ffa :=0.0;_ce :=0.0;_bb :=0.0;_bd :=0.0;for _dca ,_dba :=range _ac .Curves {_ba :=_dba .GetBounds ();if _dca ==0{_ffa =_ba .Llx ;_ce =_ba .Urx ;_bb =_ba .Lly ;_bd =_ba .Ury ;continue ;};if _ba .Llx < _ffa {_ffa =_ba .Llx ;};if _ba .Urx > _ce {_ce =_ba .Urx ;};if _ba .Lly < _bb {_bb =_ba .Lly ;};if _ba .Ury > _bd {_bd =_ba .Ury ;};};_af .X =_ffa ;_af .Y =_bb ;_af .Width =_ce -_ffa ;_af .Height =_bd -_bb ;return _af ;};
-
-// 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 (_gea Polyline )Draw (gsName string )([]byte ,*_a .PdfRectangle ,error ){if _gea .LineColor ==nil {_gea .LineColor =_a .NewPdfColorDeviceRGB (0,0,0);};_eac :=NewPath ();for _ ,_bbg :=range _gea .Points {_eac =_eac .AppendPoint (_bbg );};_gec :=_df .NewContentCreator ();_gec .Add_q ();_gec .Add_RG (_gea .LineColor .R (),_gea .LineColor .G (),_gea .LineColor .B ());_gec .Add_w (_gea .LineWidth );if len (gsName )> 1{_gec .Add_gs (_f .PdfObjectName (gsName ));};DrawPathWithCreator (_eac ,_gec );_gec .Add_S ();_gec .Add_Q ();return _gec .Bytes (),_eac .GetBoundingBox ().ToPdfRectangle (),nil ;};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 *_a .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_a .PdfColorDeviceRGB ;Opacity float64 ;};
-
-// Polygon is a multi-point shape that can be drawn to a PDF content stream.
-type Polygon struct{Points [][]Point ;FillEnabled bool ;FillColor *_a .PdfColorDeviceRGB ;BorderEnabled bool ;BorderColor *_a .PdfColorDeviceRGB ;BorderWidth float64 ;};
-
-// AddOffsetXY adds X,Y offset to all points on a curve.
-func (_fg CubicBezierCurve )AddOffsetXY (offX ,offY float64 )CubicBezierCurve {_fg .P0 .X +=offX ;_fg .P1 .X +=offX ;_fg .P2 .X +=offX ;_fg .P3 .X +=offX ;_fg .P0 .Y +=offY ;_fg .P1 .Y +=offY ;_fg .P2 .Y +=offY ;_fg .P3 .Y +=offY ;return _fg ;};
-
 // Scale scales the vector by the specified factor.
-func (_bgb Vector )Scale (factor float64 )Vector {_bbge :=_bgb .Magnitude ();_ecc :=_bgb .GetPolarAngle ();_bgb .Dx =factor *_bbge *_e .Cos (_ecc );_bgb .Dy =factor *_bbge *_e .Sin (_ecc );return _bgb ;};
+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 (_ag CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_ag .Curves =append (_ag .Curves ,curve );return _ag ;};
+func (_ca CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_ca .Curves =append (_ca .Curves ,curve );return _ca ;};
 
-// 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 (_fgb Rectangle )Draw (gsName string )([]byte ,*_a .PdfRectangle ,error ){_bgf :=NewPath ();_bgf =_bgf .AppendPoint (NewPoint (0,0));_bgf =_bgf .AppendPoint (NewPoint (0,_fgb .Height ));_bgf =_bgf .AppendPoint (NewPoint (_fgb .Width ,_fgb .Height ));_bgf =_bgf .AppendPoint (NewPoint (_fgb .Width ,0));_bgf =_bgf .AppendPoint (NewPoint (0,0));if _fgb .X !=0||_fgb .Y !=0{_bgf =_bgf .Offset (_fgb .X ,_fgb .Y );};_feg :=_df .NewContentCreator ();_feg .Add_q ();if _fgb .FillEnabled {_feg .Add_rg (_fgb .FillColor .R (),_fgb .FillColor .G (),_fgb .FillColor .B ());};if _fgb .BorderEnabled {_feg .Add_RG (_fgb .BorderColor .R (),_fgb .BorderColor .G (),_fgb .BorderColor .B ());_feg .Add_w (_fgb .BorderWidth );};if len (gsName )> 1{_feg .Add_gs (_f .PdfObjectName (gsName ));};DrawPathWithCreator (_bgf ,_feg );_feg .Add_h ();if _fgb .FillEnabled &&_fgb .BorderEnabled {_feg .Add_B ();}else if _fgb .FillEnabled {_feg .Add_f ();}else if _fgb .BorderEnabled {_feg .Add_S ();};_feg .Add_Q ();return _feg .Bytes (),_bgf .GetBoundingBox ().ToPdfRectangle (),nil ;};
+// 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 );};
 
-// 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 *_a .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_a .PdfColorDeviceRGB ;Opacity float64 ;};
+// 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))};
 
 // 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 (_ef BasicLine )Draw (gsName string )([]byte ,*_a .PdfRectangle ,error ){_fgc :=_ef .LineWidth ;_baf :=NewPath ();_baf =_baf .AppendPoint (NewPoint (_ef .X1 ,_ef .Y1 ));_baf =_baf .AppendPoint (NewPoint (_ef .X2 ,_ef .Y2 ));_ebac :=_df .NewContentCreator ();_fgd :=_baf .GetBoundingBox ();DrawPathWithCreator (_baf ,_ebac );if _ef .LineStyle ==LineStyleDashed {_ebac .Add_d ([]int64 {1,1},0);};_ebac .Add_RG (_ef .LineColor .R (),_ef .LineColor .G (),_ef .LineColor .B ()).Add_w (_fgc ).Add_S ().Add_Q ();return _ebac .Bytes (),_fgd .ToPdfRectangle (),nil ;};
+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 ;};
 
-// Magnitude returns the magnitude of the vector.
-func (_acac Vector )Magnitude ()float64 {return _e .Sqrt (_e .Pow (_acac .Dx ,2.0)+_e .Pow (_acac .Dy ,2.0));};
-
-// GetBoundingBox returns the bounding box of the path.
-func (_fb Path )GetBoundingBox ()BoundingBox {_ecf :=BoundingBox {};_eed :=0.0;_cf :=0.0;_fgg :=0.0;_bg :=0.0;for _cd ,_ea :=range _fb .Points {if _cd ==0{_eed =_ea .X ;_cf =_ea .X ;_fgg =_ea .Y ;_bg =_ea .Y ;continue ;};if _ea .X < _eed {_eed =_ea .X ;};if _ea .X > _cf {_cf =_ea .X ;};if _ea .Y < _fgg {_fgg =_ea .Y ;};if _ea .Y > _bg {_bg =_ea .Y ;};};_ecf .X =_eed ;_ecf .Y =_fgg ;_ecf .Width =_cf -_eed ;_ecf .Height =_bg -_fgg ;return _ecf ;};
-
-// 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 {_fgcc :=Vector {};_fgcc .Dx =b .X -a .X ;_fgcc .Dy =b .Y -a .Y ;return _fgcc ;};
-
-// NewPoint returns a new point with the coordinates x, y.
-func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};
-
-// 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 *_df .ContentCreator ){for _gfd ,_gfc :=range bpath .Curves {if _gfd ==0{creator .Add_m (_gfc .P0 .X ,_gfc .P0 .Y );};creator .Add_c (_gfc .P1 .X ,_gfc .P1 .Y ,_gfc .P2 .X ,_gfc .P2 .Y ,_gfc .P3 .X ,_gfc .P3 .Y );};};
-
-// Copy returns a clone of the path.
-func (_ccg Path )Copy ()Path {_gg :=Path {};_gg .Points =[]Point {};for _ ,_bcf :=range _ccg .Points {_gg .Points =append (_gg .Points ,_bcf );};return _gg ;};
-
-// BoundingBox represents the smallest rectangular area that encapsulates an object.
-type BoundingBox struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;};
-
-// Offset shifts the path with the specified offsets.
-func (_bf Path )Offset (offX ,offY float64 )Path {for _fga ,_bde :=range _bf .Points {_bf .Points [_fga ]=_bde .Add (offX ,offY );};return _bf ;};
-
-// FlipX flips the sign of the Dx component of the vector.
-func (_dcg Vector )FlipX ()Vector {_dcg .Dx =-_dcg .Dx ;return _dcg };
-
-// Offset shifts the Bezier path with the specified offsets.
-func (_ec CubicBezierPath )Offset (offX ,offY float64 )CubicBezierPath {for _da ,_fc :=range _ec .Curves {_ec .Curves [_da ]=_fc .AddOffsetXY (offX ,offY );};return _ec ;};
+// 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 )};
 
 // 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 ;};
 
-// 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 (_bda PolyBezierCurve )Draw (gsName string )([]byte ,*_a .PdfRectangle ,error ){if _bda .BorderColor ==nil {_bda .BorderColor =_a .NewPdfColorDeviceRGB (0,0,0);};_aea :=NewCubicBezierPath ();for _ ,_bcb :=range _bda .Curves {_aea =_aea .AppendCurve (_bcb );};_dd :=_df .NewContentCreator ();_dd .Add_q ();_bda .FillEnabled =_bda .FillEnabled &&_bda .FillColor !=nil ;if _bda .FillEnabled {_dd .Add_rg (_bda .FillColor .R (),_bda .FillColor .G (),_bda .FillColor .B ());};_dd .Add_RG (_bda .BorderColor .R (),_bda .BorderColor .G (),_bda .BorderColor .B ());_dd .Add_w (_bda .BorderWidth );if len (gsName )> 1{_dd .Add_gs (_f .PdfObjectName (gsName ));};for _ ,_fce :=range _aea .Curves {_dd .Add_m (_fce .P0 .X ,_fce .P0 .Y );_dd .Add_c (_fce .P1 .X ,_fce .P1 .Y ,_fce .P2 .X ,_fce .P2 .Y ,_fce .P3 .X ,_fce .P3 .Y );};if _bda .FillEnabled {_dd .Add_h ();_dd .Add_B ();}else {_dd .Add_S ();};_dd .Add_Q ();return _dd .Bytes (),_aea .GetBoundingBox ().ToPdfRectangle (),nil ;};
+// 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 ;};
 
-// 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 *_a .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineEndingStyle1 LineEndingStyle ;LineEndingStyle2 LineEndingStyle ;LineStyle LineStyle ;};
+// 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 ;};
 
-// NewPath returns a new empty path.
-func NewPath ()Path {return Path {}};
+// 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 ;};
+
+// 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 ;};
+
+// AddVector adds vector to a point.
+func (_acc Point )AddVector (v Vector )Point {_acc .X +=v .Dx ;_acc .Y +=v .Dy ;return _acc };
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 };
+
+// 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 );};
+
+// 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;);
+
+// 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 ;};
+
+// AppendPoint adds the specified point to the path.
+func (_fg Path )AppendPoint (point Point )Path {_fg .Points =append (_fg .Points ,point );return _fg };
+
+// 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 };
+
+// NewCubicBezierPath returns a new empty cubic Bezier path.
+func NewCubicBezierPath ()CubicBezierPath {_cc :=CubicBezierPath {};_cc .Curves =[]CubicBezierCurve {};return _cc ;};
+
+// 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 ;};

core/security/crypt/crypt.go

@@ -9,64 +9,34 @@
 // 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 (_gd "crypto/aes";_b "crypto/cipher";_f "crypto/md5";_ac "crypto/rand";_e "crypto/rc4";_gc "fmt";_fb "github.com/unidoc/unipdf/v3/common";_ed "github.com/unidoc/unipdf/v3/core/security";_a "io";);func init (){_dce ("\u0041\u0045\u0053V\u0032",_c )};
+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 ;};
 
-// NewFilterV2 creates a RC4-based filter with a specified key length (in bytes).
-func NewFilterV2 (length int )Filter {_fg ,_bfa :=_fec (FilterDict {Length :length });if _bfa !=nil {_fb .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",_bfa );return filterV2 {_bb :length };};return _fg ;};
+// 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 {}};
+
+// KeyLength implements Filter interface.
+func (_gff filterV2 )KeyLength ()int {return _gff ._ggf };
+
+// Name implements Filter interface.
+func (filterV2 )Name ()string {return "\u0056\u0032"};
+
+// 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 {}};
 
 // KeyLength implements Filter interface.
 func (filterAESV2 )KeyLength ()int {return 128/8};
 
-// NewIdentity creates an identity filter that bypasses all data without changes.
-func NewIdentity ()Filter {return filterIdentity {}};
-
-// HandlerVersion implements Filter interface.
-func (_ead filterV2 )HandlerVersion ()(V ,R int ){V ,R =2,3;return ;};
-
-// NewFilterAESV3 creates an AES-based filter with a 256 bit key (AESV3).
-func NewFilterAESV3 ()Filter {_ad ,_d :=_ec (FilterDict {});if _d !=nil {_fb .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",_d );return filterAESV3 {};};return _ad ;};
-
-// NewFilter creates CryptFilter from a corresponding dictionary.
-func NewFilter (d FilterDict )(Filter ,error ){_cfg ,_acd :=_fff (d .CFM );if _acd !=nil {return nil ,_acd ;};_dcg ,_acd :=_cfg (d );if _acd !=nil {return nil ,_acd ;};return _dcg ,nil ;};type filterAESV2 struct{filterAES };func (filterIdentity )KeyLength ()int {return 0};
-
-// KeyLength implements Filter interface.
-func (_gdc filterV2 )KeyLength ()int {return _gdc ._bb };func init (){_dce ("\u0041\u0045\u0053V\u0033",_ec )};func (filterIdentity )HandlerVersion ()(V ,R int ){return ;};
-
-// NewFilterAESV2 creates an AES-based filter with a 128 bit key (AESV2).
-func NewFilterAESV2 ()Filter {_gcb ,_gdf :=_c (FilterDict {});if _gdf !=nil {_fb .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",_gdf );return filterAESV2 {};};return _gcb ;};func _fff (_ca string )(filterFunc ,error ){_bg :=_ada [string (_ca )];if _bg ==nil {return nil ,_gc .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",_ca );};return _bg ,nil ;};
-
-// PDFVersion implements Filter interface.
-func (filterAESV2 )PDFVersion ()[2]int {return [2]int {1,5}};
-
-// PDFVersion implements Filter interface.
-func (_gaf filterV2 )PDFVersion ()[2]int {return [2]int {}};
-
-// HandlerVersion implements Filter interface.
-func (filterAESV2 )HandlerVersion ()(V ,R int ){V ,R =4,4;return ;};type filterFunc func (_cee FilterDict )(Filter ,error );type filterAESV3 struct{filterAES };
-
-// MakeKey implements Filter interface.
-func (filterAESV3 )MakeKey (_ ,_ uint32 ,ekey []byte )([]byte ,error ){return ekey ,nil };
-
-// DecryptBytes implements Filter interface.
-func (filterV2 )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_dda ,_bdfa :=_e .NewCipher (okey );if _bdfa !=nil {return nil ,_bdfa ;};_fb .Log .Trace ("\u0052\u00434\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_dda .XORKeyStream (buf ,buf );_fb .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};
-
 // Name implements Filter interface.
-func (filterAESV2 )Name ()string {return "\u0041\u0045\u0053V\u0032"};func _fec (_eac FilterDict )(Filter ,error ){if _eac .Length %8!=0{return nil ,_gc .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",_eac .Length );};if _eac .Length < 5||_eac .Length > 16{if _eac .Length ==40||_eac .Length ==64||_eac .Length ==128{_fb .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",_eac .Length );_eac .Length /=8;}else {return nil ,_gc .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",_eac .Length );};};return filterV2 {_bb :_eac .Length },nil ;};func init (){_dce ("\u0056\u0032",_fec )};
+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 (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 ;};
 
-// EncryptBytes implements Filter interface.
-func (filterV2 )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_ddf ,_gcg :=_e .NewCipher (okey );if _gcg !=nil {return nil ,_gcg ;};_fb .Log .Trace ("\u0052\u00434\u0020\u0045\u006ec\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_ddf .XORKeyStream (buf ,buf );_fb .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};func (filterIdentity )PDFVersion ()[2]int {return [2]int {}};
-
-// FilterDict represents information from a CryptFilter dictionary.
-type FilterDict struct{CFM string ;AuthEvent _ed .AuthEvent ;Length int ;};type filterAES struct{};
-
-// PDFVersion implements Filter interface.
-func (filterAESV3 )PDFVersion ()[2]int {return [2]int {2,0}};var _ Filter =filterV2 {};
-
-// Name implements Filter interface.
-func (filterV2 )Name ()string {return "\u0056\u0032"};
+// 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 );
 
 // Filter is a common interface for crypt filter methods.
 type Filter interface{
@@ -85,24 +55,54 @@ 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 (_efc ,_be uint32 ,_ae []byte )([]byte ,error );
+MakeKey (_ace ,_aea uint32 ,_cf []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 (_aee []byte ,_ba []byte )([]byte ,error );
+EncryptBytes (_agac []byte ,_ff []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 (_eaa []byte ,_bae []byte )([]byte ,error );};type filterV2 struct{_bb int };func (filterAES )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_eb ,_ea :=_gd .NewCipher (okey );if _ea !=nil {return nil ,_ea ;};if len (buf )< 16{_fb .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 ,_gc .Errorf ("\u0041\u0045\u0053\u003a B\u0075\u0066\u0020\u006c\u0065\u006e\u0020\u003c\u0020\u0031\u0036\u0020\u0028\u0025d\u0029",len (buf ));};_dac :=buf [:16];buf =buf [16:];if len (buf )%16!=0{_fb .Log .Debug ("\u0020\u0069\u0076\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (_dac ),_dac );_fb .Log .Debug ("\u0062\u0075\u0066\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,_gc .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 ));};_fc :=_b .NewCBCDecrypter (_eb ,_dac );_fb .Log .Trace ("A\u0045\u0053\u0020\u0044ec\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );_fb .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 );_fc .CryptBlocks (buf ,buf );_fb .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );if len (buf )==0{_fb .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 ;};_bd :=int (buf [len (buf )-1]);if _bd > len (buf ){_fb .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",_bd ,len (buf ));return buf ,_gc .Errorf ("\u0069n\u0076a\u006c\u0069\u0064\u0020\u0070a\u0064\u0020l\u0065\u006e\u0067\u0074\u0068");};buf =buf [:len (buf )-_bd ];return buf ,nil ;};type filterIdentity struct{};func (filterIdentity )Name ()string {return "\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079"};var _ Filter =filterAESV2 {};func (filterIdentity )EncryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };
+DecryptBytes (_ee []byte ,_bc []byte )([]byte ,error );};
 
-// Name implements Filter interface.
-func (filterAESV3 )Name ()string {return "\u0041\u0045\u0053V\u0033"};var _ Filter =filterAESV3 {};
+// 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"};
+
+// 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 {};
 
 // MakeKey implements Filter interface.
-func (filterAESV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ceg (objNum ,genNum ,ekey ,true );};func (filterIdentity )MakeKey (objNum ,genNum uint32 ,fkey []byte )([]byte ,error ){return fkey ,nil };
+func (filterAESV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ge (objNum ,genNum ,ekey ,true );};
 
 // MakeKey implements Filter interface.
-func (_faa filterV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _ceg (objNum ,genNum ,ekey ,false );};func _c (_bc FilterDict )(Filter ,error ){if _bc .Length ==128{_fb .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",_bc .Length );_bc .Length /=8;};if _bc .Length !=0&&_bc .Length !=16{return nil ,_gc .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",_bc .Length );};return filterAESV2 {},nil ;};var (_ada =make (map[string ]filterFunc ););
+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 (filterIdentity )DecryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func _ceg (_cef ,_dc uint32 ,_fgb []byte ,_fcc bool )([]byte ,error ){_ee :=make ([]byte ,len (_fgb )+5);for _bcf :=0;_bcf < len (_fgb );_bcf ++{_ee [_bcf ]=_fgb [_bcf ];};for _ef :=0;_ef < 3;_ef ++{_gg :=byte ((_cef >>uint32 (8*_ef ))&0xff);_ee [_ef +len (_fgb )]=_gg ;};for _bdf :=0;_bdf < 2;_bdf ++{_fcd :=byte ((_dc >>uint32 (8*_bdf ))&0xff);_ee [_bdf +len (_fgb )+3]=_fcd ;};if _fcc {_ee =append (_ee ,0x73);_ee =append (_ee ,0x41);_ee =append (_ee ,0x6C);_ee =append (_ee ,0x54);};_eab :=_f .New ();_eab .Write (_ee );_efe :=_eab .Sum (nil );if len (_fgb )+5< 16{return _efe [0:len (_fgb )+5],nil ;};return _efe ,nil ;};func (filterAES )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_gce ,_bf :=_gd .NewCipher (okey );if _bf !=nil {return nil ,_bf ;};_fb .Log .Trace ("A\u0045\u0053\u0020\u0045nc\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );const _cf =_gd .BlockSize ;_fe :=_cf -len (buf )%_cf ;for _ff :=0;_ff < _fe ;_ff ++{buf =append (buf ,byte (_fe ));};_fb .Log .Trace ("\u0050a\u0064d\u0065\u0064\u0020\u0074\u006f \u0025\u0064 \u0062\u0079\u0074\u0065\u0073",len (buf ));_edd :=make ([]byte ,_cf +len (buf ));_ccd :=_edd [:_cf ];if _ ,_fef :=_a .ReadFull (_ac .Reader ,_ccd );_fef !=nil {return nil ,_fef ;};_da :=_b .NewCBCEncrypter (_gce ,_ccd );_da .CryptBlocks (_edd [_cf :],buf );buf =_edd ;_fb .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,nil ;};func _ec (_cc FilterDict )(Filter ,error ){if _cc .Length ==256{_fb .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",_cc .Length );_cc .Length /=8;};if _cc .Length !=0&&_cc .Length !=32{return nil ,_gc .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",_cc .Length );};return filterAESV3 {},nil ;};func _dce (_ag string ,_cfa filterFunc ){if _ ,_dae :=_ada [_ag ];_dae {panic ("\u0061l\u0072e\u0061\u0064\u0079\u0020\u0072e\u0067\u0069s\u0074\u0065\u0072\u0065\u0064");};_ada [_ag ]=_cfa ;};
+func (filterAESV3 )KeyLength ()int {return 256/8};
+
+// 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 ;};
+
+// NewIdentity creates an identity filter that bypasses all data without changes.
+func NewIdentity ()Filter {return filterIdentity {}};var _ Filter =filterV2 {};
+
+// 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 ;};

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 (_b "encoding/json";_c "github.com/unidoc/unipdf/v3/core";_ef "github.com/unidoc/unipdf/v3/model";_e "io";_bc "os";);type fieldValue struct{Name string `json:"name"`;Value string `json:"value"`;
-
-// Options lists allowed values if present.
-Options []string `json:"options,omitempty"`;};
-
-// LoadFromJSON loads JSON form data from `r`.
-func LoadFromJSON (r _e .Reader )(*FieldData ,error ){var _dc FieldData ;_be :=_b .NewDecoder (r ).Decode (&_dc ._a );if _be !=nil {return nil ,_be ;};return &_dc ,nil ;};
-
-// JSON returns the field data as a string in JSON format.
-func (_fed FieldData )JSON ()(string ,error ){_cb ,_ece :=_b .MarshalIndent (_fed ._a ,"","\u0020\u0020\u0020\u0020");return string (_cb ),_ece ;};
-
-// LoadFromJSONFile loads form field data from a JSON file.
-func LoadFromJSONFile (filePath string )(*FieldData ,error ){_f ,_g :=_bc .Open (filePath );if _g !=nil {return nil ,_g ;};defer _f .Close ();return LoadFromJSON (_f );};
-
-// LoadFromPDFFile loads form field data from a PDF file.
-func LoadFromPDFFile (filePath string )(*FieldData ,error ){_cgg ,_aag :=_bc .Open (filePath );if _aag !=nil {return nil ,_aag ;};defer _cgg .Close ();return LoadFromPDF (_cgg );};
-
-// FieldValues implements model.FieldValueProvider interface.
-func (_de *FieldData )FieldValues ()(map[string ]_c .PdfObject ,error ){_fec :=make (map[string ]_c .PdfObject );for _ ,_gea :=range _de ._a {if len (_gea .Value )> 0{_fec [_gea .Name ]=_c .MakeString (_gea .Value );};};return _fec ,nil ;};
+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{_a []fieldValue };
+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 _e .ReadSeeker )(*FieldData ,error ){_ge ,_geg :=_ef .NewPdfReader (rs );if _geg !=nil {return nil ,_geg ;};if _ge .AcroForm ==nil {return nil ,nil ;};var _cg []fieldValue ;_ec :=_ge .AcroForm .AllFields ();for _ ,_fc :=range _ec {var _bg []string ;_gg :=make (map[string ]struct{});_aa ,_fcg :=_fc .FullName ();if _fcg !=nil {return nil ,_fcg ;};if _aaa ,_bce :=_fc .V .(*_c .PdfObjectString );_bce {_cg =append (_cg ,fieldValue {Name :_aa ,Value :_aaa .Decoded ()});continue ;};var _ce string ;for _ ,_ca :=range _fc .Annotations {_df ,_cdf :=_c .GetName (_ca .AS );if _cdf {_ce =_df .String ();};_ea ,_dcg :=_c .GetDict (_ca .AP );if !_dcg {continue ;};_beg ,_ :=_c .GetDict (_ea .Get ("\u004e"));for _ ,_baa :=range _beg .Keys (){_dg :=_baa .String ();if _ ,_bga :=_gg [_dg ];!_bga {_bg =append (_bg ,_dg );_gg [_dg ]=struct{}{};};};_eg ,_ :=_c .GetDict (_ea .Get ("\u0044"));for _ ,_ae :=range _eg .Keys (){_bgf :=_ae .String ();if _ ,_fcd :=_gg [_bgf ];!_fcd {_bg =append (_bg ,_bgf );_gg [_bgf ]=struct{}{};};};};_fg :=fieldValue {Name :_aa ,Value :_ce ,Options :_bg };_cg =append (_cg ,_fg );};_gd :=FieldData {_a :_cg };return &_gd ,nil ;};
+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"`;
+
+// Options lists allowed values if present.
+Options []string `json:"options,omitempty"`;};

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";);var (ByteOrder _a .ByteOrder ;_fd bool ;);func init (){const _gc =int (_g .Sizeof (0));_fa :=1;_gd :=(*[_gc ]byte )(_g .Pointer (&_fa ));if _gd [0]==0{_fd =true ;ByteOrder =_a .BigEndian ;}else {ByteOrder =_a .LittleEndian ;};};func IsLittle ()bool {return !_fd };func IsBig ()bool {return _fd };
+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 };

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 _a "github.com/unidoc/unipdf/v3/internal/jbig2/errors";func (_ca *NumSlice )AddInt (v int ){*_ca =append (*_ca ,float32 (v ))};func (_fa NumSlice )GetInt (i int )(int ,error ){const _gec ="\u0047\u0065\u0074\u0049\u006e\u0074";if i < 0||i > len (_fa )-1{return 0,_a .Errorf (_gec ,"\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};_ag :=_fa [i ];return int (_ag +Sign (_ag )*0.5),nil ;};func Ceil (numerator ,denominator int )int {if numerator %denominator ==0{return numerator /denominator ;};return (numerator /denominator )+1;};func Max (x ,y int )int {if x > y {return x ;};return y ;};func (_e *IntSlice )Add (v int )error {if _e ==nil {return _a .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");};*_e =append (*_e ,v );return nil ;};func (_cbg *Stack )Push (v interface{}){_cbg .Data =append (_cbg .Data ,v )};func (_gf *NumSlice )Add (v float32 ){*_gf =append (*_gf ,v )};func (_de *Stack )Len ()int {return len (_de .Data )};func (_afb *Stack )Peek ()(_aa interface{},_cge bool ){return _afb .peek ()};func (_gg IntsMap )Get (key uint64 )(int ,bool ){_b ,_c :=_gg [key ];if !_c {return 0,false ;};if len (_b )==0{return 0,false ;};return _b [0],true ;};type IntsMap map[uint64 ][]int ;type IntSlice []int ;func (_cd NumSlice )Get (i int )(float32 ,error ){if i < 0||i > len (_cd )-1{return 0,_a .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 _cd [i ],nil ;};type NumSlice []float32 ;func (_d IntsMap )Add (key uint64 ,value int ){_d [key ]=append (_d [key ],value )};func NewIntSlice (i int )*IntSlice {_dd :=IntSlice (make ([]int ,i ));return &_dd };func (_cg IntsMap )GetSlice (key uint64 )([]int ,bool ){_ge ,_f :=_cg [key ];if !_f {return nil ,false ;};return _ge ,true ;};func Sign (v float32 )float32 {if v >=0.0{return 1.0;};return -1.0;};func (_ac *Stack )top ()int {return len (_ac .Data )-1};func NewNumSlice (i int )*NumSlice {_ed :=NumSlice (make ([]float32 ,i ));return &_ed };func Min (x ,y int )int {if x < y {return x ;};return y ;};func (_ef *Stack )peek ()(interface{},bool ){_gfa :=_ef .top ();if _gfa ==-1{return nil ,false ;};return _ef .Data [_gfa ],true ;};func (_af NumSlice )GetIntSlice ()[]int {_fgg :=make ([]int ,len (_af ));for _gd ,_gc :=range _af {_fgg [_gd ]=int (_gc );};return _fgg ;};func (_ab IntsMap )Delete (key uint64 ){delete (_ab ,key )};func (_fb *IntSlice )Copy ()*IntSlice {_fg :=IntSlice (make ([]int ,len (*_fb )));copy (_fg ,*_fb );return &_fg ;};func (_bc IntSlice )Size ()int {return len (_bc )};func Abs (v int )int {if v > 0{return v ;};return -v ;};type Stack struct{Data []interface{};Aux *Stack ;};func (_ee *Stack )Pop ()(_ad interface{},_gfd bool ){_ad ,_gfd =_ee .peek ();if !_gfd {return nil ,_gfd ;};_ee .Data =_ee .Data [:_ee .top ()];return _ad ,true ;};func (_cb IntSlice )Get (index int )(int ,error ){if index > len (_cb )-1{return 0,_a .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 _cb [index ],nil ;};
+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 ))};

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 (_e "github.com/unidoc/unipdf/v3/internal/bitwise";_ef "github.com/unidoc/unipdf/v3/internal/jbig2/bitmap";_ec "github.com/unidoc/unipdf/v3/internal/jbig2/document";_be "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_a "image";);func (_ab *Decoder )DecodeNextPage ()([]byte ,error ){_ab ._g ++;_cc :=_ab ._g ;return _ab .decodePage (_cc );};func (_d *Decoder )decodePage (_gf int )([]byte ,error ){const _dd ="\u0064\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065";if _gf < 0{return nil ,_be .Errorf (_dd ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_gf );};if _gf > int (_d ._bf .NumberOfPages ){return nil ,_be .Errorf (_dd ,"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",_gf );};_ae ,_ea :=_d ._bf .GetPage (_gf );if _ea !=nil {return nil ,_be .Wrap (_ea ,_dd ,"");};_dc ,_ea :=_ae .GetBitmap ();if _ea !=nil {return nil ,_be .Wrap (_ea ,_dd ,"");};_dc .InverseData ();if !_d ._c .UnpaddedData {return _dc .Data ,nil ;};return _dc .GetUnpaddedData ();};func (_cf *Decoder )PageNumber ()(int ,error ){const _ag ="\u0044e\u0063o\u0064\u0065\u0072\u002e\u0050a\u0067\u0065N\u0075\u006d\u0062\u0065\u0072";if _cf ._bf ==nil {return 0,_be .Error (_ag ,"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 (_cf ._bf .NumberOfPages ),nil ;};func Decode (input []byte ,parameters Parameters ,globals *_ec .Globals )(*Decoder ,error ){_abb :=_e .NewReader (input );_aeg ,_eff :=_ec .DecodeDocument (_abb ,globals );if _eff !=nil {return nil ,_eff ;};return &Decoder {_ed :_abb ,_bf :_aeg ,_c :parameters },nil ;};func (_efb *Decoder )DecodePage (pageNumber int )([]byte ,error ){return _efb .decodePage (pageNumber )};func (_af *Decoder )decodePageImage (_dcf int )(_a .Image ,error ){const _agb ="\u0064e\u0063o\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";if _dcf < 0{return nil ,_be .Errorf (_agb ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_dcf );};if _dcf > int (_af ._bf .NumberOfPages ){return nil ,_be .Errorf (_agb ,"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",_dcf );};_fac ,_bb :=_af ._bf .GetPage (_dcf );if _bb !=nil {return nil ,_be .Wrap (_bb ,_agb ,"");};_abd ,_bb :=_fac .GetBitmap ();if _bb !=nil {return nil ,_be .Wrap (_bb ,_agb ,"");};return _abd .ToImage (),nil ;};type Decoder struct{_ed _e .StreamReader ;_bf *_ec .Document ;_g int ;_c Parameters ;};func (_f *Decoder )DecodePageImage (pageNumber int )(_a .Image ,error ){const _bc ="\u0064\u0065\u0063od\u0065\u0072\u002e\u0044\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";_fa ,_bg :=_f .decodePageImage (pageNumber );if _bg !=nil {return nil ,_be .Wrap (_bg ,_bc ,"");};return _fa ,nil ;};type Parameters struct{UnpaddedData bool ;Color _ef .Color ;};
+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 )};

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 _d "fmt";func _gf (_b ,_ec string )*processError {return &processError {_ee :"\u005b\u0055\u006e\u0069\u0050\u0044\u0046\u005d",_a :_b ,_dd :_ec };};func Wrap (err error ,processName ,message string )error {if _ecb ,_ed :=err .(*processError );_ed {_ecb ._ee ="";};_ef :=_gf (message ,processName );_ef ._ab =err ;return _ef ;};func Wrapf (err error ,processName ,message string ,arguments ...interface{})error {if _eca ,_efg :=err .(*processError );_efg {_eca ._ee ="";};_de :=_gf (_d .Sprintf (message ,arguments ...),processName );_de ._ab =err ;return _de ;};func (_g *processError )Error ()string {var _f string ;if _g ._ee !=""{_f =_g ._ee ;};_f +="\u0050r\u006f\u0063\u0065\u0073\u0073\u003a "+_g ._dd ;if _g ._a !=""{_f +="\u0020\u004d\u0065\u0073\u0073\u0061\u0067\u0065\u003a\u0020"+_g ._a ;};if _g ._ab !=nil {_f +="\u002e\u0020"+_g ._ab .Error ();};return _f ;};func Error (processName ,message string )error {return _gf (message ,processName )};func Errorf (processName ,message string ,arguments ...interface{})error {return _gf (_d .Sprintf (message ,arguments ...),processName );};type processError struct{_ee string ;_dd string ;_a string ;_ab error ;};
+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 ;};

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 (_g "github.com/unidoc/unipdf/v3/internal/bitwise";_a "github.com/unidoc/unipdf/v3/internal/jbig2/decoder";_cc "github.com/unidoc/unipdf/v3/internal/jbig2/document";_f "github.com/unidoc/unipdf/v3/internal/jbig2/document/segments";_gc "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_e "sort";);func DecodeBytes (encoded []byte ,parameters _a .Parameters ,globals ...Globals )([]byte ,error ){var _ge Globals ;if len (globals )> 0{_ge =globals [0];};_ad ,_d :=_a .Decode (encoded ,parameters ,_ge .ToDocumentGlobals ());if _d !=nil {return nil ,_d ;};return _ad .DecodeNextPage ();};func (_fc Globals )ToDocumentGlobals ()*_cc .Globals {if _fc ==nil {return nil ;};_ff :=[]*_f .Header {};for _ ,_ee :=range _fc {_ff =append (_ff ,_ee );};_e .Slice (_ff ,func (_cf ,_b int )bool {return _ff [_cf ].SegmentNumber < _ff [_b ].SegmentNumber });return &_cc .Globals {Segments :_ff };};func DecodeGlobals (encoded []byte )(Globals ,error ){const _dg ="\u0044\u0065\u0063\u006f\u0064\u0065\u0047\u006c\u006f\u0062\u0061\u006c\u0073";_da :=_g .NewReader (encoded );_df ,_fb :=_cc .DecodeDocument (_da ,nil );if _fb !=nil {return nil ,_gc .Wrap (_fb ,_dg ,"");};if _df .GlobalSegments ==nil ||(_df .GlobalSegments .Segments ==nil ){return nil ,_gc .Error (_dg ,"\u006eo\u0020\u0067\u006c\u006f\u0062\u0061\u006c\u0020\u0073\u0065\u0067m\u0065\u006e\u0074\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};_fg :=Globals {};for _ ,_fbf :=range _df .GlobalSegments .Segments {_fg [int (_fbf .SegmentNumber )]=_fbf ;};return _fg ,nil ;};type Globals map[int ]*_f .Header ;
+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 ();};

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 (_d "github.com/unidoc/unipdf/v3/internal/bitwise";_b "github.com/unidoc/unipdf/v3/internal/imageutil";_e "io";);func ResampleUint32 (data []uint32 ,bitsPerInputSample int ,bitsPerOutputSample int )[]uint32 {var _ec []uint32 ;_dee :=bitsPerOutputSample ;var _ce uint32 ;var _af uint32 ;_fff :=0;_ab :=0;_dfc :=0;for _dfc < len (data ){if _fff > 0{_ed :=_fff ;if _dee < _ed {_ed =_dee ;};_ce =(_ce <<uint (_ed ))|uint32 (_af >>uint (bitsPerInputSample -_ed ));_fff -=_ed ;if _fff > 0{_af =_af <<uint (_ed );}else {_af =0;};_dee -=_ed ;if _dee ==0{_ec =append (_ec ,_ce );_dee =bitsPerOutputSample ;_ce =0;_ab ++;};}else {_gad :=data [_dfc ];_dfc ++;_fd :=bitsPerInputSample ;if _dee < _fd {_fd =_dee ;};_fff =bitsPerInputSample -_fd ;_ce =(_ce <<uint (_fd ))|uint32 (_gad >>uint (_fff ));if _fd < bitsPerInputSample {_af =_gad <<uint (_fd );};_dee -=_fd ;if _dee ==0{_ec =append (_ec ,_ce );_dee =bitsPerOutputSample ;_ce =0;_ab ++;};};};for _fff >=bitsPerOutputSample {_eb :=_fff ;if _dee < _eb {_eb =_dee ;};_ce =(_ce <<uint (_eb ))|uint32 (_af >>uint (bitsPerInputSample -_eb ));_fff -=_eb ;if _fff > 0{_af =_af <<uint (_eb );}else {_af =0;};_dee -=_eb ;if _dee ==0{_ec =append (_ec ,_ce );_dee =bitsPerOutputSample ;_ce =0;_ab ++;};};if _dee > 0&&_dee < bitsPerOutputSample {_ce <<=uint (_dee );_ec =append (_ec ,_ce );};return _ec ;};func NewWriter (img _b .ImageBase )*Writer {return &Writer {_eg :_d .NewWriterMSB (img .Data ),_aea :img ,_cd :img .ColorComponents ,_cg :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};func ResampleBytes (data []byte ,bitsPerSample int )[]uint32 {var _gg []uint32 ;_gfd :=bitsPerSample ;var _dc uint32 ;var _bd byte ;_gff :=0;_dd :=0;_df :=0;for _df < len (data ){if _gff > 0{_ae :=_gff ;if _gfd < _ae {_ae =_gfd ;};_dc =(_dc <<uint (_ae ))|uint32 (_bd >>uint (8-_ae ));_gff -=_ae ;if _gff > 0{_bd =_bd <<uint (_ae );}else {_bd =0;};_gfd -=_ae ;if _gfd ==0{_gg =append (_gg ,_dc );_gfd =bitsPerSample ;_dc =0;_dd ++;};}else {_gcc :=data [_df ];_df ++;_gd :=8;if _gfd < _gd {_gd =_gfd ;};_gff =8-_gd ;_dc =(_dc <<uint (_gd ))|uint32 (_gcc >>uint (_gff ));if _gd < 8{_bd =_gcc <<uint (_gd );};_gfd -=_gd ;if _gfd ==0{_gg =append (_gg ,_dc );_gfd =bitsPerSample ;_dc =0;_dd ++;};};};for _gff >=bitsPerSample {_fa :=_gff ;if _gfd < _fa {_fa =_gfd ;};_dc =(_dc <<uint (_fa ))|uint32 (_bd >>uint (8-_fa ));_gff -=_fa ;if _gff > 0{_bd =_bd <<uint (_fa );}else {_bd =0;};_gfd -=_fa ;if _gfd ==0{_gg =append (_gg ,_dc );_gfd =bitsPerSample ;_dc =0;_dd ++;};};return _gg ;};func (_gcd *Writer )WriteSamples (samples []uint32 )error {for _cea :=0;_cea < len (samples );_cea ++{if _gab :=_gcd .WriteSample (samples [_cea ]);_gab !=nil {return _gab ;};};return nil ;};func (_ff *Reader )ReadSample ()(uint32 ,error ){if _ff ._eae ==_ff ._c .Height {return 0,_e .EOF ;};_ga ,_gb :=_ff ._g .ReadBits (byte (_ff ._c .BitsPerComponent ));if _gb !=nil {return 0,_gb ;};_ff ._gc --;if _ff ._gc ==0{_ff ._gc =_ff ._c .ColorComponents ;_ff ._gf ++;};if _ff ._gf ==_ff ._c .Width {if _ff ._de {_ff ._g .ConsumeRemainingBits ();};_ff ._gf =0;_ff ._eae ++;};return uint32 (_ga ),nil ;};type SampleReader interface{ReadSample ()(uint32 ,error );ReadSamples (_ea []uint32 )error ;};func (_bg *Writer )WriteSample (sample uint32 )error {if _ ,_cfa :=_bg ._eg .WriteBits (uint64 (sample ),_bg ._aea .BitsPerComponent );_cfa !=nil {return _cfa ;};_bg ._cd --;if _bg ._cd ==0{_bg ._cd =_bg ._aea .ColorComponents ;_bg ._ffg ++;};if _bg ._ffg ==_bg ._aea .Width {if _bg ._cg {_bg ._eg .FinishByte ();};_bg ._ffg =0;};return nil ;};type Writer struct{_aea _b .ImageBase ;_eg *_d .Writer ;_ffg ,_cd int ;_cg bool ;};type Reader struct{_c _b .ImageBase ;_g *_d .Reader ;_gf ,_eae ,_gc int ;_de bool ;};func (_ca *Reader )ReadSamples (samples []uint32 )(_a error ){for _db :=0;_db < len (samples );_db ++{samples [_db ],_a =_ca .ReadSample ();if _a !=nil {return _a ;};};return nil ;};func NewReader (img _b .ImageBase )*Reader {return &Reader {_g :_d .NewReader (img .Data ),_c :img ,_gc :img .ColorComponents ,_de :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};type SampleWriter interface{WriteSample (_cf uint32 )error ;WriteSamples (_gffe []uint32 )error ;};
+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 };};

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 (_a "fmt";_df "github.com/unidoc/unipdf/v3/common";_b "math";);func (_fbfg Matrix )Angle ()float64 {_cg :=_b .Atan2 (-_fbfg [1],_fbfg [0]);if _cg < 0.0{_cg +=2*_b .Pi ;};return _cg /_b .Pi *180.0;};func (_cc *Matrix )Shear (x ,y float64 ){_cc .Concat (ShearMatrix (x ,y ))};func ShearMatrix (x ,y float64 )Matrix {return NewMatrix (1,y ,x ,1,0,0)};func (_egbf *Point )transformByMatrix (_eba Matrix ){_egbf .X ,_egbf .Y =_eba .Transform (_egbf .X ,_egbf .Y );};func (_ed Point )Rotate (theta float64 )Point {_ba :=_b .Hypot (_ed .X ,_ed .Y );_abb :=_b .Atan2 (_ed .Y ,_ed .X );_edf ,_fda :=_b .Sincos (_abb +theta /180.0*_b .Pi );return Point {_ba *_fda ,_ba *_edf };};func (_f Matrix )Scale (xScale ,yScale float64 )Matrix {return _f .Mult (NewMatrix (xScale ,0,0,yScale ,0,0));};func (_cgg Matrix )Unrealistic ()bool {_feg ,_fd ,_ce ,_cag :=_b .Abs (_cgg [0]),_b .Abs (_cgg [1]),_b .Abs (_cgg [3]),_b .Abs (_cgg [4]);_gce :=_feg > _aff &&_cag > _aff ;_agg :=_fd > _aff &&_ce > _aff ;return !(_gce ||_agg );};func (_egb *Point )Transform (a ,b ,c ,d ,tx ,ty float64 ){_gbd :=NewMatrix (a ,b ,c ,d ,tx ,ty );_egb .transformByMatrix (_gbd );};func (_ga *Matrix )Clone ()Matrix {return NewMatrix (_ga [0],_ga [1],_ga [3],_ga [4],_ga [6],_ga [7])};func (_fc Matrix )Mult (b Matrix )Matrix {_fc .Concat (b );return _fc };func NewMatrix (a ,b ,c ,d ,tx ,ty float64 )Matrix {_eb :=Matrix {a ,b ,0,c ,d ,0,tx ,ty ,1};_eb .clampRange ();return _eb ;};func (_dbd *Matrix )clampRange (){for _be ,_dea :=range _dbd {if _dea > _ef {_df .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_dea ,_ef );_dbd [_be ]=_ef ;}else if _dea < -_ef {_df .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_dea ,-_ef );_dbd [_be ]=-_ef ;};};};func (_fa Matrix )ScalingFactorY ()float64 {return _b .Hypot (_fa [3],_fa [4])};func (_efe Point )Interpolate (b Point ,t float64 )Point {return Point {X :(1-t )*_efe .X +t *b .X ,Y :(1-t )*_efe .Y +t *b .Y };};type Point struct{X float64 ;Y float64 ;};const _cd =1.0e-6;func (_fbb Point )Displace (delta Point )Point {return Point {_fbb .X +delta .X ,_fbb .Y +delta .Y }};func (_fbf *Matrix )Concat (b Matrix ){*_fbf =Matrix {b [0]*_fbf [0]+b [1]*_fbf [3],b [0]*_fbf [1]+b [1]*_fbf [4],0,b [3]*_fbf [0]+b [4]*_fbf [3],b [3]*_fbf [1]+b [4]*_fbf [4],0,b [6]*_fbf [0]+b [7]*_fbf [3]+_fbf [6],b [6]*_fbf [1]+b [7]*_fbf [4]+_fbf [7],1};_fbf .clampRange ();};func (_bc Matrix )ScalingFactorX ()float64 {return _b .Hypot (_bc [0],_bc [1])};func (_ebf *Point )Set (x ,y float64 ){_ebf .X ,_ebf .Y =x ,y };func (_c Matrix )String ()string {_ge ,_gea ,_cf ,_cfb ,_gc ,_gec :=_c [0],_c [1],_c [3],_c [4],_c [6],_c [7];return _a .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",_ge ,_gea ,_cf ,_cfb ,_gc ,_gec );};func TranslationMatrix (tx ,ty float64 )Matrix {return NewMatrix (1,0,0,1,tx ,ty )};func IdentityMatrix ()Matrix {return NewMatrix (1,0,0,1,0,0)};func (_afc Matrix )Inverse ()(Matrix ,bool ){_ab ,_eg :=_afc [0],_afc [1];_dc ,_bcf :=_afc [3],_afc [4];_bd ,_da :=_afc [6],_afc [7];_gebb :=_ab *_bcf -_eg *_dc ;if _b .Abs (_gebb )< _cd {return Matrix {},false ;};_ega ,_fe :=_bcf /_gebb ,-_eg /_gebb ;_egd ,_db :=-_dc /_gebb ,_ab /_gebb ;_gb :=-(_ega *_bd +_egd *_da );_bdd :=-(_fe *_bd +_db *_da );return NewMatrix (_ega ,_fe ,_egd ,_db ,_gb ,_bdd ),true ;};type Matrix [9]float64 ;func (_faa Point )String ()string {return _a .Sprintf ("(\u0025\u002e\u0032\u0066\u002c\u0025\u002e\u0032\u0066\u0029",_faa .X ,_faa .Y );};func RotationMatrix (angle float64 )Matrix {_e :=_b .Cos (angle );_g :=_b .Sin (angle );return NewMatrix (_e ,_g ,-_g ,_e ,0,0);};func (_dd Matrix )Rotate (theta float64 )Matrix {_de ,_ag :=_b .Sincos (theta /180.0*_b .Pi );return _dd .Mult (NewMatrix (_ag ,-_de ,_de ,_ag ,0,0));};func ScaleMatrix (x ,y float64 )Matrix {return NewMatrix (x ,0,0,y ,0,0)};const _aff =1e-6;const _ef =1e9;func (_af Matrix )Translation ()(float64 ,float64 ){return _af [6],_af [7]};func (_fb *Matrix )Set (a ,b ,c ,d ,tx ,ty float64 ){_fb [0],_fb [1]=a ,b ;_fb [3],_fb [4]=c ,d ;_fb [6],_fb [7]=tx ,ty ;_fb .clampRange ();};func (_gcc Point )Distance (b Point )float64 {return _b .Hypot (_gcc .X -b .X ,_gcc .Y -b .Y )};func (_geb Matrix )Transform (x ,y float64 )(float64 ,float64 ){_bf :=x *_geb [0]+y *_geb [3]+_geb [6];_ca :=x *_geb [1]+y *_geb [4]+_geb [7];return _bf ,_ca ;};func (_bb Matrix )Translate (tx ,ty float64 )Matrix {return NewMatrix (_bb [0],_bb [1],_bb [3],_bb [4],_bb [6]+tx ,_bb [7]+ty );};func NewMatrixFromTransforms (xScale ,yScale ,theta ,tx ,ty float64 )Matrix {return IdentityMatrix ().Scale (xScale ,yScale ).Rotate (theta ).Translate (tx ,ty );};func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};
+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 ))};

model/sighandler/sighandler.go

@@ -10,75 +10,98 @@
 // 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 (_b "bytes";_ce "crypto";_cea "crypto/rand";_fbe "crypto/rsa";_fd "crypto/x509";_be "crypto/x509/pkix";_gg "encoding/asn1";_gc "errors";_fe "fmt";_d "github.com/unidoc/pkcs7";_fg "github.com/unidoc/timestamp";_a "github.com/unidoc/unipdf/v3/core";_ec "github.com/unidoc/unipdf/v3/model";_fc "hash";_g "io";_e "io/ioutil";_fb "net/http";_c "time";);
-
-// 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 *_fbe .PrivateKey ,certificate *_fd .Certificate )(_ec .SignatureHandler ,error ){return &adobeX509RSASHA1 {_cbf :certificate ,_ccd :privateKey },nil ;};type timestampInfo struct{Version int ;Policy _gg .RawValue ;MessageImprint struct{HashAlgorithm _be .AlgorithmIdentifier ;HashedMessage []byte ;};SerialNumber _gg .RawValue ;GeneralizedTime _c .Time ;};type docTimeStamp struct{_dcf string ;_eff _ce .Hash ;};
-
-// Sign sets the Contents fields for the PdfSignature.
-func (_dbcf *adobeX509RSASHA1 )Sign (sig *_ec .PdfSignature ,digest _ec .Hasher )error {var _de []byte ;var _gac error ;if _dbcf ._gf !=nil {_de ,_gac =_dbcf ._gf (sig ,digest );if _gac !=nil {return _gac ;};}else {_ege ,_gfd :=digest .(_fc .Hash );if !_gfd {return _gc .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_bgc ,_ :=_cfd (_dbcf ._cbf .SignatureAlgorithm );_de ,_gac =_fbe .SignPKCS1v15 (_cea .Reader ,_dbcf ._ccd ,_bgc ,_ege .Sum (nil ));if _gac !=nil {return _gac ;};};_de ,_gac =_gg .Marshal (_de );if _gac !=nil {return _gac ;};sig .Contents =_a .MakeHexString (string (_de ));return nil ;};
-
-// SignFunc represents a custom signing function. The function should return
-// the computed signature.
-type SignFunc func (_cfe *_ec .PdfSignature ,_cae _ec .Hasher )([]byte ,error );
-
-// NewDigest creates a new digest.
-func (_edg *docTimeStamp )NewDigest (sig *_ec .PdfSignature )(_ec .Hasher ,error ){return _b .NewBuffer (nil ),nil ;};
-
-// 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 *_fd .Certificate ,signFunc SignFunc )(_ec .SignatureHandler ,error ){return &adobeX509RSASHA1 {_cbf :certificate ,_gf :signFunc },nil ;};func (_bd *adobeX509RSASHA1 )getCertificate (_fbb *_ec .PdfSignature )(*_fd .Certificate ,error ){if _bd ._cbf !=nil {return _bd ._cbf ,nil ;};var _gga []byte ;switch _cca :=_fbb .Cert .(type ){case *_a .PdfObjectString :_gga =_cca .Bytes ();case *_a .PdfObjectArray :if _cca .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 _ ,_gb :=range _cca .Elements (){_cda ,_gce :=_a .GetString (_gb );if !_gce {return nil ,_fe .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",_gb );};_gga =append (_gga ,_cda .Bytes ()...);};default:return nil ,_fe .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",_cca );};_eed ,_ced :=_fd .ParseCertificates (_gga );if _ced !=nil {return nil ,_ced ;};return _eed [0],nil ;};
-
-// Sign sets the Contents fields.
-func (_baab *adobePKCS7Detached )Sign (sig *_ec .PdfSignature ,digest _ec .Hasher )error {if _baab ._fcc {_ee :=_baab ._ae ;if _ee <=0{_ee =8192;};sig .Contents =_a .MakeHexString (string (make ([]byte ,_ee )));return nil ;};_dba :=digest .(*_b .Buffer );_ab ,_ecf :=_d .NewSignedData (_dba .Bytes ());if _ecf !=nil {return _ecf ;};if _fcd :=_ab .AddSigner (_baab ._df ,_baab ._ac ,_d .SignerInfoConfig {});_fcd !=nil {return _fcd ;};_ab .Detach ();_bc ,_ecf :=_ab .Finish ();if _ecf !=nil {return _ecf ;};_cbb :=make ([]byte ,8192);copy (_cbb ,_bc );sig .Contents =_a .MakeHexString (string (_cbb ));return nil ;};
-
-// NewDocTimeStamp creates a new DocTimeStamp signature handler.
-// The timestampServerURL parameter can be empty string for the signature validation.
-// The hashAlgorithm parameter can be crypto.SHA1, crypto.SHA256, crypto.SHA384, crypto.SHA512.
-func NewDocTimeStamp (timestampServerURL string ,hashAlgorithm _ce .Hash )(_ec .SignatureHandler ,error ){return &docTimeStamp {_dcf :timestampServerURL ,_eff :hashAlgorithm },nil ;};
-
-// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
-func (_dc *adobeX509RSASHA1 )IsApplicable (sig *_ec .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";};
-
-// Validate validates PdfSignature.
-func (_ggb *docTimeStamp )Validate (sig *_ec .PdfSignature ,digest _ec .Hasher )(_ec .SignatureValidationResult ,error ){_bdb :=sig .Contents .Bytes ();_cge ,_gdge :=_d .Parse (_bdb );if _gdge !=nil {return _ec .SignatureValidationResult {},_gdge ;};if _gdge =_cge .Verify ();_gdge !=nil {return _ec .SignatureValidationResult {},_gdge ;};var _bcc timestampInfo ;_ ,_gdge =_gg .Unmarshal (_cge .Content ,&_bcc );if _gdge !=nil {return _ec .SignatureValidationResult {},_gdge ;};_gbd ,_gdge :=_gdg (_bcc .MessageImprint .HashAlgorithm .Algorithm );if _gdge !=nil {return _ec .SignatureValidationResult {},_gdge ;};_dd :=_gbd .New ();_ace :=digest .(*_b .Buffer );_dd .Write (_ace .Bytes ());_fgdf :=_dd .Sum (nil );_eab :=_ec .SignatureValidationResult {IsSigned :true ,IsVerified :_b .Equal (_fgdf ,_bcc .MessageImprint .HashedMessage ),GeneralizedTime :_bcc .GeneralizedTime };return _eab ,nil ;};
+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 (_ea *docTimeStamp )InitSignature (sig *_ec .PdfSignature )error {_eba :=*_ea ;sig .Handler =&_eba ;sig .Filter =_a .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_a .MakeName ("\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031");sig .Reference =nil ;_bbe ,_afc :=_ea .NewDigest (sig );if _afc !=nil {return _afc ;};_bbe .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 _eba .Sign (sig ,_bbe );};
+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 );};
 
-// 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 *_fbe .PrivateKey ,certificate *_fd .Certificate )(_ec .SignatureHandler ,error ){return &adobePKCS7Detached {_df :certificate ,_ac :privateKey },nil ;};func (_cb *adobePKCS7Detached )getCertificate (_dg *_ec .PdfSignature )(*_fd .Certificate ,error ){if _cb ._df !=nil {return _cb ._df ,nil ;};var _eg []byte ;switch _aed :=_dg .Cert .(type ){case *_a .PdfObjectString :_eg =_aed .Bytes ();case *_a .PdfObjectArray :if _aed .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 _ ,_fee :=range _aed .Elements (){_db ,_ef :=_a .GetString (_fee );if !_ef {return nil ,_fe .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",_fee );};_eg =append (_eg ,_db .Bytes ()...);};default:return nil ,_fe .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",_aed );};_bb ,_gde :=_fd .ParseCertificates (_eg );if _gde !=nil {return nil ,_gde ;};return _bb [0],nil ;};type adobeX509RSASHA1 struct{_ccd *_fbe .PrivateKey ;_cbf *_fd .Certificate ;_gf SignFunc ;};func _cfd (_cfdd _fd .SignatureAlgorithm )(_ce .Hash ,bool ){var _fgd _ce .Hash ;switch _cfdd {case _fd .SHA1WithRSA :_fgd =_ce .SHA1 ;case _fd .SHA256WithRSA :_fgd =_ce .SHA256 ;case _fd .SHA384WithRSA :_fgd =_ce .SHA384 ;case _fd .SHA512WithRSA :_fgd =_ce .SHA512 ;default:return _ce .SHA1 ,false ;};return _fgd ,true ;};func (_ece *docTimeStamp )getCertificate (_gced *_ec .PdfSignature )(*_fd .Certificate ,error ){var _cbfc []byte ;switch _bgcg :=_gced .Cert .(type ){case *_a .PdfObjectString :_cbfc =_bgcg .Bytes ();case *_a .PdfObjectArray :if _bgcg .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 _ ,_gfe :=range _bgcg .Elements (){_fde ,_bdc :=_a .GetString (_gfe );if !_bdc {return nil ,_fe .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",_gfe );};_cbfc =append (_cbfc ,_fde .Bytes ()...);};default:return nil ,_fe .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",_bgcg );};_eee ,_cdg :=_fd .ParseCertificates (_cbfc );if _cdg !=nil {return nil ,_cdg ;};return _eee [0],nil ;};
-
-// IsApplicable returns true if the signature handler is applicable for the PdfSignature
-func (_cg *adobePKCS7Detached )IsApplicable (sig *_ec .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 adobePKCS7Detached struct{_ac *_fbe .PrivateKey ;_df *_fd .Certificate ;_fcc bool ;_ae int ;};
-
-// IsApplicable returns true if the signature handler is applicable for the PdfSignature.
-func (_gag *docTimeStamp )IsApplicable (sig *_ec .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 (_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 (_ga *adobeX509RSASHA1 )NewDigest (sig *_ec .PdfSignature )(_ec .Hasher ,error ){_dbc ,_fcg :=_ga .getCertificate (sig );if _fcg !=nil {return nil ,_fcg ;};_gdb ,_ :=_cfd (_dbc .SignatureAlgorithm );return _gdb .New (),nil ;};
+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 )(_ec .SignatureHandler ,error ){return &adobePKCS7Detached {_fcc :true ,_ae :signatureLen },nil ;};
+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 ;};
 
-// Validate validates PdfSignature.
-func (_cd *adobePKCS7Detached )Validate (sig *_ec .PdfSignature ,digest _ec .Hasher )(_ec .SignatureValidationResult ,error ){_cc :=sig .Contents .Bytes ();_ff ,_dbd :=_d .Parse (_cc );if _dbd !=nil {return _ec .SignatureValidationResult {},_dbd ;};_ca :=digest .(*_b .Buffer );_ff .Content =_ca .Bytes ();if _dbd =_ff .Verify ();_dbd !=nil {return _ec .SignatureValidationResult {},_dbd ;};return _ec .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
+// 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 (_baa *adobePKCS7Detached )NewDigest (sig *_ec .PdfSignature )(_ec .Hasher ,error ){return _b .NewBuffer (nil ),nil ;};
+func (_ec *docTimeStamp )NewDigest (sig *_da .PdfSignature )(_da .Hasher ,error ){return _f .NewBuffer (nil ),nil ;};
 
-// InitSignature initialises the PdfSignature.
-func (_fccd *adobeX509RSASHA1 )InitSignature (sig *_ec .PdfSignature )error {if _fccd ._cbf ==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 _fccd ._ccd ==nil &&_fccd ._gf ==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");};_eb :=*_fccd ;sig .Handler =&_eb ;sig .Filter =_a .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_a .MakeName ("\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031");sig .Cert =_a .MakeString (string (_eb ._cbf .Raw ));sig .Reference =nil ;_ed ,_dbe :=_eb .NewDigest (sig );if _dbe !=nil {return _dbe ;};_ed .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 _eb .Sign (sig ,_ed );};
+// 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 ;};
 
-// Validate validates PdfSignature.
-func (_fff *adobeX509RSASHA1 )Validate (sig *_ec .PdfSignature ,digest _ec .Hasher )(_ec .SignatureValidationResult ,error ){_aa ,_bab :=_fff .getCertificate (sig );if _bab !=nil {return _ec .SignatureValidationResult {},_bab ;};_da :=sig .Contents .Bytes ();var _af []byte ;if _ ,_ebc :=_gg .Unmarshal (_da ,&_af );_ebc !=nil {return _ec .SignatureValidationResult {},_ebc ;};_dgg ,_ccc :=digest .(_fc .Hash );if !_ccc {return _ec .SignatureValidationResult {},_gc .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_bg ,_ :=_cfd (_aa .SignatureAlgorithm );if _fbf :=_fbe .VerifyPKCS1v15 (_aa .PublicKey .(*_fbe .PublicKey ),_bg ,_dgg .Sum (nil ),_af );_fbf !=nil {return _ec .SignatureValidationResult {},_fbf ;};return _ec .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};func _gdg (_geg _gg .ObjectIdentifier )(_ce .Hash ,error ){switch {case _geg .Equal (_d .OIDDigestAlgorithmSHA1 ),_geg .Equal (_d .OIDDigestAlgorithmECDSASHA1 ),_geg .Equal (_d .OIDDigestAlgorithmDSA ),_geg .Equal (_d .OIDDigestAlgorithmDSASHA1 ),_geg .Equal (_d .OIDEncryptionAlgorithmRSA ):return _ce .SHA1 ,nil ;case _geg .Equal (_d .OIDDigestAlgorithmSHA256 ),_geg .Equal (_d .OIDDigestAlgorithmECDSASHA256 ):return _ce .SHA256 ,nil ;case _geg .Equal (_d .OIDDigestAlgorithmSHA384 ),_geg .Equal (_d .OIDDigestAlgorithmECDSASHA384 ):return _ce .SHA384 ,nil ;case _geg .Equal (_d .OIDDigestAlgorithmSHA512 ),_geg .Equal (_d .OIDDigestAlgorithmECDSASHA512 ):return _ce .SHA512 ,nil ;};return _ce .Hash (0),_d .ErrUnsupportedAlgorithm ;};
+// 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 ;};
 
 // Sign sets the Contents fields for the PdfSignature.
-func (_ffc *docTimeStamp )Sign (sig *_ec .PdfSignature ,digest _ec .Hasher )error {_fgc :=digest .(*_b .Buffer );_agb :=_ffc ._eff .New ();if _ ,_aee :=_g .Copy (_agb ,_fgc );_aee !=nil {return _aee ;};_dae :=_agb .Sum (nil );_fbc :=_fg .Request {HashAlgorithm :_ffc ._eff ,HashedMessage :_dae ,Certificates :true ,Extensions :nil ,ExtraExtensions :nil };_cega ,_caf :=_fbc .Marshal ();if _caf !=nil {return _caf ;};_daa ,_caf :=_fb .Post (_ffc ._dcf ,"a\u0070\u0070\u006c\u0069\u0063\u0061t\u0069\u006f\u006e\u002f\u0074\u0069\u006d\u0065\u0073t\u0061\u006d\u0070-\u0071u\u0065\u0072\u0079",_b .NewBuffer (_cega ));if _caf !=nil {return _caf ;};defer _daa .Body .Close ();_gfdf ,_caf :=_e .ReadAll (_daa .Body );if _caf !=nil {return _caf ;};if _daa .StatusCode !=_fb .StatusOK {return _fe .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",_daa .StatusCode );};var _ad struct{Version _gg .RawValue ;Content _gg .RawValue ;};_ ,_caf =_gg .Unmarshal (_gfdf ,&_ad );if _caf !=nil {return _caf ;};sig .Contents =_a .MakeHexString (string (_ad .Content .FullBytes ));return nil ;};
+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 ;};
+
+// 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 ;};
+
+// 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";};
+
+// 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";};
+
+// DocTimeStampOpts defines options for configuring the timestamp handler.
+type DocTimeStampOpts struct{
+
+// SignatureSize is the estimated size of the signature contents in bytes.
+// If not provided, a default signature size of 4192 is used.
+// The signing process will report the model.ErrSignNotEnoughSpace error
+// if the estimated signature size is smaller than the actual size of the
+// signature.
+SignatureSize int ;};
 
 // InitSignature initialises the PdfSignature.
-func (_ba *adobePKCS7Detached )InitSignature (sig *_ec .PdfSignature )error {if !_ba ._fcc {if _ba ._df ==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 _ba ._ac ==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");};};_cf :=*_ba ;sig .Handler =&_cf ;sig .Filter =_a .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_a .MakeName ("\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064");sig .Reference =nil ;_cfc ,_fbed :=_cf .NewDigest (sig );if _fbed !=nil {return _fbed ;};_cfc .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 _cf .Sign (sig ,_cfc );};
+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 ;};
+
+// 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 ;};
+
+// 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 *_ae .PrivateKey ,certificate *_gc .Certificate )(_da .SignatureHandler ,error ){return &adobePKCS7Detached {_fd :certificate ,_fg :privateKey },nil ;};

pdfutil/pdfutil.go

@@ -9,11 +9,19 @@
 // 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 (_a "github.com/unidoc/unipdf/v3/common";_b "github.com/unidoc/unipdf/v3/contentstream";_ge "github.com/unidoc/unipdf/v3/contentstream/draw";_g "github.com/unidoc/unipdf/v3/model";);
+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";);
 
-// NormalizePage rotates the contents of the passed in page according to its
-// Rotate entry (i.e. flattens the rotation). If rotation is applied, the
-// Rotate entry of the page is set to nil.
+// NormalizePage performs the following operations on the passed in page:
+// - Normalize the page rotation.
+//   Rotates the contents of the page according to the Rotate entry, thus
+//   flattening the rotation. The Rotate entry of the page is set to nil.
+// - Normalize the media box.
+//   If the media box of the page is offsetted (Llx != 0 or Lly != 0),
+//   the contents of the page are translated to (-Llx, -Lly). After
+//   normalization, the media box is updated (Llx and Lly are set to 0 and
+//   Urx and Ury are updated accordingly).
+// - Normalize the crop box.
+//   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 *_g .PdfPage )error {if _ae :=page .Rotate ;_ae ==nil ||*_ae ==0||*_ae %90!=0{return nil ;};_gg ,_f :=page .GetMediaBox ();if _f !=nil {return _f ;};_e ,_f :=page .GetContentStreams ();if _f !=nil {return _f ;};_gc ,_ff :=_gg .Width (),_gg .Height ();_ag :=-float64 (*page .Rotate );_cc :=_ge .Path {Points :[]_ge .Point {_ge .NewPoint (0,0).Rotate (_ag ),_ge .NewPoint (_gc ,0).Rotate (_ag ),_ge .NewPoint (0,_ff ).Rotate (_ag ),_ge .NewPoint (_gc ,_ff ).Rotate (_ag )}}.GetBoundingBox ();_bb :=-_gg .Llx +(_cc .Width -_gc )/2+_gc /2;_ef :=_gg .Lly +(_cc .Height -_ff )/2+_ff /2;_d :=_b .NewContentCreator ();_d .Translate (_bb ,_ef );_d .RotateDeg (_ag );_d .Translate (-_gc /2,-_ff /2);_fg :=_d .Operations ().String ();*_gg =_g .PdfRectangle {Urx :_cc .Width ,Ury :_cc .Height };_e =append ([]string {_fg },_e ...);if _f =page .SetContentStreams (_e ,nil );_f !=nil {return _f ;};_a .Log .Debug ("\u0052o\u0074\u0061\u0074\u0065\u003d\u0025\u0066\u00b0\u0020\u0025\u0071 \u006d\u0062\u006f\u0078\u003d\u0025\u002e\u0032\u0066",_ag ,_fg ,*_gg );page .Rotate =nil ;return nil ;};
+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 ;};

ps/ps.go

@@ -14,35 +14,86 @@
 //
 // Package ps implements various functionalities needed for handling Postscript for PDF uses, in particular
 // for PDF function type 4.
-package ps ;import (_df "bufio";_c "bytes";_d "errors";_e "fmt";_dfe "github.com/unidoc/unipdf/v3/common";_cd "github.com/unidoc/unipdf/v3/core";_b "io";_bb "math";);
+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 ;};
 
-// NewPSParser returns a new instance of the PDF Postscript parser from input data.
-func NewPSParser (content []byte )*PSParser {_facc :=PSParser {};_acc :=_c .NewBuffer (content );_facc ._acfg =_df .NewReader (_acc );return &_facc ;};var ErrTypeCheck =_d .New ("\u0074\u0079p\u0065\u0020\u0063h\u0065\u0063\u006b\u0020\u0065\u0072\u0072\u006f\u0072");
+// 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 ;};
 
-// Pop pops an object from the top of the stack.
-func (_bcg *PSStack )Pop ()(PSObject ,error ){if len (*_bcg )< 1{return nil ,ErrStackUnderflow ;};_bdc :=(*_bcg )[len (*_bcg )-1];*_bcg =(*_bcg )[0:len (*_bcg )-1];return _bdc ,nil ;};func (_dba *PSProgram )String ()string {_ec :="\u007b\u0020";for _ ,_ag :=range *_dba {_ec +=_ag .String ();_ec +="\u0020";};_ec +="\u007d";return _ec ;};var ErrStackUnderflow =_d .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 (_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 };
 
-// PopNumberAsFloat64 pops and return the numeric value of the top of the stack as a float64.
-// Real or integer only.
-func (_cecd *PSStack )PopNumberAsFloat64 ()(float64 ,error ){_acgg ,_eeec :=_cecd .Pop ();if _eeec !=nil {return 0,_eeec ;};if _aggd ,_ddbe :=_acgg .(*PSReal );_ddbe {return _aggd .Val ,nil ;}else if _acec ,_bfeg :=_acgg .(*PSInteger );_bfeg {return float64 (_acec .Val ),nil ;}else {return 0,ErrTypeCheck ;};};func (_bf *PSReal )Duplicate ()PSObject {_g :=PSReal {};_g .Val =_bf .Val ;return &_g };func (_beeg *PSOperand )roll (_gde *PSStack )error {_ged ,_abg :=_gde .Pop ();if _abg !=nil {return _abg ;};_ecd ,_abg :=_gde .Pop ();if _abg !=nil {return _abg ;};_caec ,_fdcf :=_ged .(*PSInteger );if !_fdcf {return ErrTypeCheck ;};_ecggb ,_fdcf :=_ecd .(*PSInteger );if !_fdcf {return ErrTypeCheck ;};if _ecggb .Val < 0{return ErrRangeCheck ;};if _ecggb .Val ==0||_ecggb .Val ==1{return nil ;};if _ecggb .Val > len (*_gde ){return ErrStackUnderflow ;};for _dbgf :=0;_dbgf < _dfg (_caec .Val );_dbgf ++{var _edd []PSObject ;_edd =(*_gde )[len (*_gde )-(_ecggb .Val ):len (*_gde )];if _caec .Val > 0{_gaed :=_edd [len (_edd )-1];_edd =append ([]PSObject {_gaed },_edd [0:len (_edd )-1]...);}else {_gfd :=_edd [len (_edd )-_ecggb .Val ];_edd =append (_edd [1:],_gfd );};_fcf :=append ((*_gde )[0:len (*_gde )-_ecggb .Val ],_edd ...);_gde =&_fcf ;};return nil ;};
+// 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 ;};
 
 // Exec executes the operand `op` in the state specified by `stack`.
-func (_cc *PSOperand )Exec (stack *PSStack )error {_bbc :=ErrUnsupportedOperand ;switch *_cc {case "\u0061\u0062\u0073":_bbc =_cc .abs (stack );case "\u0061\u0064\u0064":_bbc =_cc .add (stack );case "\u0061\u006e\u0064":_bbc =_cc .and (stack );case "\u0061\u0074\u0061\u006e":_bbc =_cc .atan (stack );case "\u0062\u0069\u0074\u0073\u0068\u0069\u0066\u0074":_bbc =_cc .bitshift (stack );case "\u0063e\u0069\u006c\u0069\u006e\u0067":_bbc =_cc .ceiling (stack );case "\u0063\u006f\u0070\u0079":_bbc =_cc .copy (stack );case "\u0063\u006f\u0073":_bbc =_cc .cos (stack );case "\u0063\u0076\u0069":_bbc =_cc .cvi (stack );case "\u0063\u0076\u0072":_bbc =_cc .cvr (stack );case "\u0064\u0069\u0076":_bbc =_cc .div (stack );case "\u0064\u0075\u0070":_bbc =_cc .dup (stack );case "\u0065\u0071":_bbc =_cc .eq (stack );case "\u0065\u0078\u0063\u0068":_bbc =_cc .exch (stack );case "\u0065\u0078\u0070":_bbc =_cc .exp (stack );case "\u0066\u006c\u006fo\u0072":_bbc =_cc .floor (stack );case "\u0067\u0065":_bbc =_cc .ge (stack );case "\u0067\u0074":_bbc =_cc .gt (stack );case "\u0069\u0064\u0069\u0076":_bbc =_cc .idiv (stack );case "\u0069\u0066":_bbc =_cc .ifCondition (stack );case "\u0069\u0066\u0065\u006c\u0073\u0065":_bbc =_cc .ifelse (stack );case "\u0069\u006e\u0064e\u0078":_bbc =_cc .index (stack );case "\u006c\u0065":_bbc =_cc .le (stack );case "\u006c\u006f\u0067":_bbc =_cc .log (stack );case "\u006c\u006e":_bbc =_cc .ln (stack );case "\u006c\u0074":_bbc =_cc .lt (stack );case "\u006d\u006f\u0064":_bbc =_cc .mod (stack );case "\u006d\u0075\u006c":_bbc =_cc .mul (stack );case "\u006e\u0065":_bbc =_cc .ne (stack );case "\u006e\u0065\u0067":_bbc =_cc .neg (stack );case "\u006e\u006f\u0074":_bbc =_cc .not (stack );case "\u006f\u0072":_bbc =_cc .or (stack );case "\u0070\u006f\u0070":_bbc =_cc .pop (stack );case "\u0072\u006f\u0075n\u0064":_bbc =_cc .round (stack );case "\u0072\u006f\u006c\u006c":_bbc =_cc .roll (stack );case "\u0073\u0069\u006e":_bbc =_cc .sin (stack );case "\u0073\u0071\u0072\u0074":_bbc =_cc .sqrt (stack );case "\u0073\u0075\u0062":_bbc =_cc .sub (stack );case "\u0074\u0072\u0075\u006e\u0063\u0061\u0074\u0065":_bbc =_cc .truncate (stack );case "\u0078\u006f\u0072":_bbc =_cc .xor (stack );};return _bbc ;};
-
-// MakeInteger returns a new PSInteger object initialized with `val`.
-func MakeInteger (val int )*PSInteger {_ccdg :=PSInteger {};_ccdg .Val =val ;return &_ccdg };func (_gfca *PSOperand )exp (_gee *PSStack )error {_afc ,_fba :=_gee .PopNumberAsFloat64 ();if _fba !=nil {return _fba ;};_fabf ,_fba :=_gee .PopNumberAsFloat64 ();if _fba !=nil {return _fba ;};if _bb .Abs (_afc )< 1&&_fabf < 0{return ErrUndefinedResult ;};_egbf :=_bb .Pow (_fabf ,_afc );_fba =_gee .Push (MakeReal (_egbf ));return _fba ;};func (_eecb *PSOperand )ln (_ebbe *PSStack )error {_dag ,_adce :=_ebbe .PopNumberAsFloat64 ();if _adce !=nil {return _adce ;};_ccga :=_bb .Log (_dag );_adce =_ebbe .Push (MakeReal (_ccga ));return _adce ;};func (_abga *PSParser )parseNumber ()(PSObject ,error ){_bege ,_bfge :=_cd .ParseNumber (_abga ._acfg );if _bfge !=nil {return nil ,_bfge ;};switch _ddaf :=_bege .(type ){case *_cd .PdfObjectFloat :return MakeReal (float64 (*_ddaf )),nil ;case *_cd .PdfObjectInteger :return MakeInteger (int (*_ddaf )),nil ;};return nil ,_e .Errorf ("\u0075n\u0068\u0061\u006e\u0064\u006c\u0065\u0064\u0020\u006e\u0075\u006db\u0065\u0072\u0020\u0074\u0079\u0070\u0065\u0020\u0025\u0054",_bege );};
-
-// PSReal represents a real number.
-type PSReal struct{Val float64 ;};
+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 ;};
 
 // PSProgram defines a Postscript program which is a series of PS objects (arguments, commands, programs etc).
 type PSProgram []PSObject ;
 
-// PSBoolean represents a boolean value.
-type PSBoolean struct{Val bool ;};func (_eac *PSOperand )copy (_aed *PSStack )error {_eaa ,_cgf :=_aed .PopInteger ();if _cgf !=nil {return _cgf ;};if _eaa < 0{return ErrRangeCheck ;};if _eaa > len (*_aed ){return ErrRangeCheck ;};*_aed =append (*_aed ,(*_aed )[len (*_aed )-_eaa :]...);return nil ;};func _dfg (_ggb int )int {if _ggb < 0{return -_ggb ;};return _ggb ;};func (_bfce *PSOperand )mul (_gaf *PSStack )error {_bfbb ,_cdgf :=_gaf .Pop ();if _cdgf !=nil {return _cdgf ;};_cda ,_cdgf :=_gaf .Pop ();if _cdgf !=nil {return _cdgf ;};_ccc ,_afe :=_bfbb .(*PSReal );_gbd ,_bfcc :=_bfbb .(*PSInteger );if !_afe &&!_bfcc {return ErrTypeCheck ;};_ccd ,_bbbc :=_cda .(*PSReal );_ddd ,_gfg :=_cda .(*PSInteger );if !_bbbc &&!_gfg {return ErrTypeCheck ;};if _bfcc &&_gfg {_cge :=_gbd .Val *_ddd .Val ;_cce :=_gaf .Push (MakeInteger (_cge ));return _cce ;};var _dgd float64 =0;if _afe {_dgd =_ccc .Val ;}else {_dgd =float64 (_gbd .Val );};if _bbbc {_dgd *=_ccd .Val ;}else {_dgd *=float64 (_ddd .Val );};_cdgf =_gaf .Push (MakeReal (_dgd ));return _cdgf ;};
+// 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 );};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
 
 // NewPSStack returns an initialized PSStack.
-func NewPSStack ()*PSStack {return &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 ;};
 
 // PSObject represents a postscript object.
 type PSObject interface{
@@ -55,65 +106,14 @@ Duplicate ()PSObject ;
 DebugString ()string ;
 
 // String returns a string representation of the PSObject.
-String ()string ;};func (_bfdb *PSOperand )ne (_daba *PSStack )error {_gcdf :=_bfdb .eq (_daba );if _gcdf !=nil {return _gcdf ;};_gcdf =_bfdb .not (_daba );return _gcdf ;};func (_aa *PSBoolean )Duplicate ()PSObject {_af :=PSBoolean {};_af .Val =_aa .Val ;return &_af };
-
-// PopInteger specificially pops an integer from the top of the stack, returning the value as an int.
-func (_dcgb *PSStack )PopInteger ()(int ,error ){_ddff ,_gea :=_dcgb .Pop ();if _gea !=nil {return 0,_gea ;};if _ede ,_addb :=_ddff .(*PSInteger );_addb {return _ede .Val ,nil ;};return 0,ErrTypeCheck ;};
-
-// PSStack defines a stack of PSObjects. PSObjects can be pushed on or pull from the stack.
-type PSStack []PSObject ;func (_ceca *PSOperand )exch (_cdbb *PSStack )error {_fabg ,_befc :=_cdbb .Pop ();if _befc !=nil {return _befc ;};_fdc ,_befc :=_cdbb .Pop ();if _befc !=nil {return _befc ;};_befc =_cdbb .Push (_fabg );if _befc !=nil {return _befc ;};_befc =_cdbb .Push (_fdc );return _befc ;};func (_cefg *PSOperand )round (_dbabg *PSStack )error {_gegg ,_gcaa :=_dbabg .Pop ();if _gcaa !=nil {return _gcaa ;};if _gaa ,_bbe :=_gegg .(*PSReal );_bbe {_gcaa =_dbabg .Push (MakeReal (_bb .Floor (_gaa .Val +0.5)));}else if _bdec ,_dfcd :=_gegg .(*PSInteger );_dfcd {_gcaa =_dbabg .Push (MakeInteger (_bdec .Val ));}else {return ErrTypeCheck ;};return _gcaa ;};func (_dgc *PSProgram )DebugString ()string {_bef :="\u007b\u0020";for _ ,_dge :=range *_dgc {_bef +=_dge .DebugString ();_bef +="\u0020";};_bef +="\u007d";return _bef ;};const _dg =0.000001;func (_gcg *PSOperand )dup (_eefa *PSStack )error {_acd ,_bfef :=_eefa .Pop ();if _bfef !=nil {return _bfef ;};_bfef =_eefa .Push (_acd );if _bfef !=nil {return _bfef ;};_bfef =_eefa .Push (_acd .Duplicate ());return _bfef ;};func (_bed *PSOperand )log (_dbec *PSStack )error {_eege ,_acef :=_dbec .PopNumberAsFloat64 ();if _acef !=nil {return _acef ;};_ebf :=_bb .Log10 (_eege );_acef =_dbec .Push (MakeReal (_ebf ));return _acef ;};func (_cef *PSOperand )eq (_cdb *PSStack )error {_efa ,_ecea :=_cdb .Pop ();if _ecea !=nil {return _ecea ;};_ebd ,_ecea :=_cdb .Pop ();if _ecea !=nil {return _ecea ;};_gfc ,_bdf :=_efa .(*PSBoolean );_gfcf ,_bfa :=_ebd .(*PSBoolean );if _bdf ||_bfa {var _cgfc error ;if _bdf &&_bfa {_cgfc =_cdb .Push (MakeBool (_gfc .Val ==_gfcf .Val ));}else {_cgfc =_cdb .Push (MakeBool (false ));};return _cgfc ;};var _ebbf float64 ;var _gdb float64 ;if _gddd ,_cded :=_efa .(*PSInteger );_cded {_ebbf =float64 (_gddd .Val );}else if _fab ,_fbc :=_efa .(*PSReal );_fbc {_ebbf =_fab .Val ;}else {return ErrTypeCheck ;};if _ffa ,_dea :=_ebd .(*PSInteger );_dea {_gdb =float64 (_ffa .Val );}else if _dbab ,_gegd :=_ebd .(*PSReal );_gegd {_gdb =_dbab .Val ;}else {return ErrTypeCheck ;};if _bb .Abs (_gdb -_ebbf )< _dg {_ecea =_cdb .Push (MakeBool (true ));}else {_ecea =_cdb .Push (MakeBool (false ));};return _ecea ;};
-
-// PSInteger represents an integer.
-type PSInteger struct{Val int ;};func (_ff *PSOperand )Duplicate ()PSObject {_gd :=*_ff ;return &_gd };func (_bde *PSOperand )floor (_dbac *PSStack )error {_decf ,_ccf :=_dbac .Pop ();if _ccf !=nil {return _ccf ;};if _fdb ,_cae :=_decf .(*PSReal );_cae {_ccf =_dbac .Push (MakeReal (_bb .Floor (_fdb .Val )));}else if _daeb ,_fgf :=_decf .(*PSInteger );_fgf {_ccf =_dbac .Push (MakeInteger (_daeb .Val ));}else {return ErrTypeCheck ;};return _ccf ;};func (_dgb *PSOperand )bitshift (_dee *PSStack )error {_bfc ,_dcd :=_dee .PopInteger ();if _dcd !=nil {return _dcd ;};_ae ,_dcd :=_dee .PopInteger ();if _dcd !=nil {return _dcd ;};var _gc int ;if _bfc >=0{_gc =_ae <<uint (_bfc );}else {_gc =_ae >>uint (-_bfc );};_dcd =_dee .Push (MakeInteger (_gc ));return _dcd ;};func (_fd *PSInteger )String ()string {return _e .Sprintf ("\u0025\u0064",_fd .Val )};func (_becb *PSOperand )gt (_ddg *PSStack )error {_egbb ,_ceg :=_ddg .PopNumberAsFloat64 ();if _ceg !=nil {return _ceg ;};_dfcc ,_ceg :=_ddg .PopNumberAsFloat64 ();if _ceg !=nil {return _ceg ;};if _bb .Abs (_dfcc -_egbb )< _dg {_dgg :=_ddg .Push (MakeBool (false ));return _dgg ;}else if _dfcc > _egbb {_faaf :=_ddg .Push (MakeBool (true ));return _faaf ;}else {_bade :=_ddg .Push (MakeBool (false ));return _bade ;};};
-
-// NewPSProgram returns an empty, initialized PSProgram.
-func NewPSProgram ()*PSProgram {return &PSProgram {}};func (_cf *PSInteger )Duplicate ()PSObject {_fbe :=PSInteger {};_fbe .Val =_cf .Val ;return &_fbe };func (_dbg *PSOperand )atan (_bad *PSStack )error {_dcf ,_ca :=_bad .PopNumberAsFloat64 ();if _ca !=nil {return _ca ;};_beb ,_ca :=_bad .PopNumberAsFloat64 ();if _ca !=nil {return _ca ;};if _dcf ==0{var _ed error ;if _beb < 0{_ed =_bad .Push (MakeReal (270));}else {_ed =_bad .Push (MakeReal (90));};return _ed ;};_aaa :=_beb /_dcf ;_fdg :=_bb .Atan (_aaa )*180/_bb .Pi ;_ca =_bad .Push (MakeReal (_fdg ));return _ca ;};func (_eee *PSOperand )String ()string {return _e .Sprintf ("\u0025\u0073",*_eee )};func (_dfd *PSOperand )sqrt (_cccf *PSStack )error {_gbgc ,_adfg :=_cccf .PopNumberAsFloat64 ();if _adfg !=nil {return _adfg ;};if _gbgc < 0{return ErrRangeCheck ;};_cccd :=_bb .Sqrt (_gbgc );_adfg =_cccf .Push (MakeReal (_cccd ));return _adfg ;};
-
-// PSExecutor has its own execution stack and is used to executre a PS routine (program).
-type PSExecutor struct{Stack *PSStack ;_de *PSProgram ;};var ErrRangeCheck =_d .New ("\u0072\u0061\u006e\u0067\u0065\u0020\u0063\u0068\u0065\u0063\u006b\u0020e\u0072\u0072\u006f\u0072");func (_aae *PSParser )parseBool ()(*PSBoolean ,error ){_cdae ,_bafe :=_aae ._acfg .Peek (4);if _bafe !=nil {return MakeBool (false ),_bafe ;};if (len (_cdae )>=4)&&(string (_cdae [:4])=="\u0074\u0072\u0075\u0065"){_aae ._acfg .Discard (4);return MakeBool (true ),nil ;};_cdae ,_bafe =_aae ._acfg .Peek (5);if _bafe !=nil {return MakeBool (false ),_bafe ;};if (len (_cdae )>=5)&&(string (_cdae [:5])=="\u0066\u0061\u006cs\u0065"){_aae ._acfg .Discard (5);return MakeBool (false ),nil ;};return MakeBool (false ),_d .New ("\u0075n\u0065\u0078\u0070\u0065c\u0074\u0065\u0064\u0020\u0062o\u006fl\u0065a\u006e\u0020\u0073\u0074\u0072\u0069\u006eg");};var ErrStackOverflow =_d .New ("\u0073\u0074\u0061\u0063\u006b\u0020\u006f\u0076\u0065r\u0066\u006c\u006f\u0077");func (_bdbe *PSOperand )or (_gge *PSStack )error {_cadg ,_bga :=_gge .Pop ();if _bga !=nil {return _bga ;};_cgef ,_bga :=_gge .Pop ();if _bga !=nil {return _bga ;};if _bggb ,_agc :=_cadg .(*PSBoolean );_agc {_caed ,_ecc :=_cgef .(*PSBoolean );if !_ecc {return ErrTypeCheck ;};_bga =_gge .Push (MakeBool (_bggb .Val ||_caed .Val ));return _bga ;};if _cedg ,_ab :=_cadg .(*PSInteger );_ab {_eeea ,_gdac :=_cgef .(*PSInteger );if !_gdac {return ErrTypeCheck ;};_bga =_gge .Push (MakeInteger (_cedg .Val |_eeea .Val ));return _bga ;};return ErrTypeCheck ;};func (_gcd *PSOperand )idiv (_cdgg *PSStack )error {_fed ,_gcdg :=_cdgg .Pop ();if _gcdg !=nil {return _gcdg ;};_cgff ,_gcdg :=_cdgg .Pop ();if _gcdg !=nil {return _gcdg ;};_add ,_fbg :=_fed .(*PSInteger );if !_fbg {return ErrTypeCheck ;};if _add .Val ==0{return ErrUndefinedResult ;};_bab ,_fbg :=_cgff .(*PSInteger );if !_fbg {return ErrTypeCheck ;};_ccbfb :=_bab .Val /_add .Val ;_gcdg =_cdgg .Push (MakeInteger (_ccbfb ));return _gcdg ;};
-
-// Parse parses the postscript and store as a program that can be executed.
-func (_dda *PSParser )Parse ()(*PSProgram ,error ){_dda .skipSpaces ();_daea ,_gbb :=_dda ._acfg .Peek (2);if _gbb !=nil {return nil ,_gbb ;};if _daea [0]!='{'{return nil ,_d .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");};_beeb ,_gbb :=_dda .parseFunction ();if _gbb !=nil &&_gbb !=_b .EOF {return nil ,_gbb ;};return _beeb ,_gbb ;};func (_dga *PSOperand )not (_gbde *PSStack )error {_aegb ,_gce :=_gbde .Pop ();if _gce !=nil {return _gce ;};if _bge ,_fgda :=_aegb .(*PSBoolean );_fgda {_gce =_gbde .Push (MakeBool (!_bge .Val ));return _gce ;}else if _gcf ,_cac :=_aegb .(*PSInteger );_cac {_gce =_gbde .Push (MakeInteger (^_gcf .Val ));return _gce ;}else {return ErrTypeCheck ;};};
+String ()string ;};
 
 // DebugString returns a descriptive string representation of the stack - intended for debugging.
-func (_babd *PSStack )DebugString ()string {_efg :="\u005b\u0020";for _ ,_bfdd :=range *_babd {_efg +=_bfdd .DebugString ();_efg +="\u0020";};_efg +="\u005d";return _efg ;};func (_fga *PSOperand )DebugString ()string {return _e .Sprintf ("\u006fp\u003a\u0027\u0025\u0073\u0027",*_fga );};func (_bbb *PSBoolean )DebugString ()string {return _e .Sprintf ("\u0062o\u006f\u006c\u003a\u0025\u0076",_bbb .Val );};var ErrUndefinedResult =_d .New ("\u0075\u006e\u0064\u0065fi\u006e\u0065\u0064\u0020\u0072\u0065\u0073\u0075\u006c\u0074\u0020\u0065\u0072\u0072o\u0072");func (_gg *PSOperand )cvr (_eb *PSStack )error {_dfaf ,_dfc :=_eb .Pop ();if _dfc !=nil {return _dfc ;};if _aef ,_cfg :=_dfaf .(*PSReal );_cfg {_dfc =_eb .Push (MakeReal (_aef .Val ));}else if _ace ,_cdg :=_dfaf .(*PSInteger );_cdg {_dfc =_eb .Push (MakeReal (float64 (_ace .Val )));}else {return ErrTypeCheck ;};return _dfc ;};func (_gfe *PSOperand )mod (_ebe *PSStack )error {_eegc ,_bdb :=_ebe .Pop ();if _bdb !=nil {return _bdb ;};_gcag ,_bdb :=_ebe .Pop ();if _bdb !=nil {return _bdb ;};_bgf ,_dde :=_eegc .(*PSInteger );if !_dde {return ErrTypeCheck ;};if _bgf .Val ==0{return ErrUndefinedResult ;};_ecb ,_dde :=_gcag .(*PSInteger );if !_dde {return ErrTypeCheck ;};_deac :=_ecb .Val %_bgf .Val ;_bdb =_ebe .Push (MakeInteger (_deac ));return _bdb ;};func (_dbde *PSOperand )sin (_febg *PSStack )error {_egcf ,_fcbc :=_febg .PopNumberAsFloat64 ();if _fcbc !=nil {return _fcbc ;};_cdf :=_bb .Sin (_egcf *_bb .Pi /180.0);_fcbc =_febg .Push (MakeReal (_cdf ));return _fcbc ;};
-
-// PSOperand represents a Postscript operand (text string).
-type PSOperand string ;func (_febc *PSOperand )lt (_dcg *PSStack )error {_acb ,_fafe :=_dcg .PopNumberAsFloat64 ();if _fafe !=nil {return _fafe ;};_bcef ,_fafe :=_dcg .PopNumberAsFloat64 ();if _fafe !=nil {return _fafe ;};if _bb .Abs (_bcef -_acb )< _dg {_cba :=_dcg .Push (MakeBool (false ));return _cba ;}else if _bcef < _acb {_ced :=_dcg .Push (MakeBool (true ));return _ced ;}else {_cgd :=_dcg .Push (MakeBool (false ));return _cgd ;};};func (_dbfa *PSOperand )le (_eec *PSStack )error {_gef ,_ggff :=_eec .PopNumberAsFloat64 ();if _ggff !=nil {return _ggff ;};_effc ,_ggff :=_eec .PopNumberAsFloat64 ();if _ggff !=nil {return _ggff ;};if _bb .Abs (_effc -_gef )< _dg {_gdfd :=_eec .Push (MakeBool (true ));return _gdfd ;}else if _effc < _gef {_ddb :=_eec .Push (MakeBool (true ));return _ddb ;}else {_gdc :=_eec .Push (MakeBool (false ));return _gdc ;};};func (_bgcc *PSParser )parseFunction ()(*PSProgram ,error ){_bdeg ,_ :=_bgcc ._acfg .ReadByte ();if _bdeg !='{'{return nil ,_d .New ("\u0069\u006ev\u0061\u006c\u0069d\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_eaf :=NewPSProgram ();for {_bgcc .skipSpaces ();_bcb ,_bfde :=_bgcc ._acfg .Peek (2);if _bfde !=nil {if _bfde ==_b .EOF {break ;};return nil ,_bfde ;};_dfe .Log .Trace ("\u0050e\u0065k\u0020\u0073\u0074\u0072\u0069\u006e\u0067\u003a\u0020\u0025\u0073",string (_bcb ));if _bcb [0]=='}'{_dfe .Log .Trace ("\u0045\u004f\u0046 \u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");_bgcc ._acfg .ReadByte ();break ;}else if _bcb [0]=='{'{_dfe .Log .Trace ("\u0046u\u006e\u0063\u0074\u0069\u006f\u006e!");_ffg ,_ddf :=_bgcc .parseFunction ();if _ddf !=nil {return nil ,_ddf ;};_eaf .Append (_ffg );}else if _cd .IsDecimalDigit (_bcb [0])||(_bcb [0]=='-'&&_cd .IsDecimalDigit (_bcb [1])){_dfe .Log .Trace ("\u002d>\u004e\u0075\u006d\u0062\u0065\u0072!");_eeed ,_cadgg :=_bgcc .parseNumber ();if _cadgg !=nil {return nil ,_cadgg ;};_eaf .Append (_eeed );}else {_dfe .Log .Trace ("\u002d>\u004fp\u0065\u0072\u0061\u006e\u0064 \u006f\u0072 \u0062\u006f\u006f\u006c\u003f");_bcb ,_ =_bgcc ._acfg .Peek (5);_dgaa :=string (_bcb );_dfe .Log .Trace ("\u0050\u0065\u0065k\u0020\u0073\u0074\u0072\u003a\u0020\u0025\u0073",_dgaa );if (len (_dgaa )> 4)&&(_dgaa [:5]=="\u0066\u0061\u006cs\u0065"){_aaf ,_fdgb :=_bgcc .parseBool ();if _fdgb !=nil {return nil ,_fdgb ;};_eaf .Append (_aaf );}else if (len (_dgaa )> 3)&&(_dgaa [:4]=="\u0074\u0072\u0075\u0065"){_ffgd ,_fda :=_bgcc .parseBool ();if _fda !=nil {return nil ,_fda ;};_eaf .Append (_ffgd );}else {_gaef ,_fedb :=_bgcc .parseOperand ();if _fedb !=nil {return nil ,_fedb ;};_eaf .Append (_gaef );};};};return _eaf ,nil ;};func (_fgdd *PSOperand )ceiling (_bee *PSStack )error {_dec ,_eg :=_bee .Pop ();if _eg !=nil {return _eg ;};if _bfd ,_bfb :=_dec .(*PSReal );_bfb {_eg =_bee .Push (MakeReal (_bb .Ceil (_bfd .Val )));}else if _cfc ,_fag :=_dec .(*PSInteger );_fag {_eg =_bee .Push (MakeInteger (_cfc .Val ));}else {_eg =ErrTypeCheck ;};return _eg ;};func (_ccge *PSOperand )cos (_eff *PSStack )error {_cca ,_gae :=_eff .PopNumberAsFloat64 ();if _gae !=nil {return _gae ;};_aeg :=_bb .Cos (_cca *_bb .Pi /180.0);_gae =_eff .Push (MakeReal (_aeg ));return _gae ;};
-
-// Exec executes the program, typically leaving output values on the stack.
-func (_cg *PSProgram )Exec (stack *PSStack )error {for _ ,_baa :=range *_cg {var _bac error ;switch _ge :=_baa .(type ){case *PSInteger :_ee :=_ge ;_bac =stack .Push (_ee );case *PSReal :_fgd :=_ge ;_bac =stack .Push (_fgd );case *PSBoolean :_cbg :=_ge ;_bac =stack .Push (_cbg );case *PSProgram :_geg :=_ge ;_bac =stack .Push (_geg );case *PSOperand :_ce :=_ge ;_bac =_ce .Exec (stack );default:return ErrTypeCheck ;};if _bac !=nil {return _bac ;};};return nil ;};func (_aebg *PSOperand )xor (_ddeg *PSStack )error {_dcb ,_afec :=_ddeg .Pop ();if _afec !=nil {return _afec ;};_fcbf ,_afec :=_ddeg .Pop ();if _afec !=nil {return _afec ;};if _effb ,_efd :=_dcb .(*PSBoolean );_efd {_ebfd ,_acf :=_fcbf .(*PSBoolean );if !_acf {return ErrTypeCheck ;};_afec =_ddeg .Push (MakeBool (_effb .Val !=_ebfd .Val ));return _afec ;};if _ddcb ,_cga :=_dcb .(*PSInteger );_cga {_bgfa ,_bbef :=_fcbf .(*PSInteger );if !_bbef {return ErrTypeCheck ;};_afec =_ddeg .Push (MakeInteger (_ddcb .Val ^_bgfa .Val ));return _afec ;};return ErrTypeCheck ;};func (_adbd *PSOperand )ge (_eab *PSStack )error {_bea ,_bgc :=_eab .PopNumberAsFloat64 ();if _bgc !=nil {return _bgc ;};_acgb ,_bgc :=_eab .PopNumberAsFloat64 ();if _bgc !=nil {return _bgc ;};if _bb .Abs (_acgb -_bea )< _dg {_gca :=_eab .Push (MakeBool (true ));return _gca ;}else if _acgb > _bea {_dbf :=_eab .Push (MakeBool (true ));return _dbf ;}else {_cbgf :=_eab .Push (MakeBool (false ));return _cbgf ;};};func (_dbe *PSOperand )ifCondition (_ceb *PSStack )error {_adde ,_dab :=_ceb .Pop ();if _dab !=nil {return _dab ;};_cfa ,_dab :=_ceb .Pop ();if _dab !=nil {return _dab ;};_fca ,_gda :=_adde .(*PSProgram );if !_gda {return ErrTypeCheck ;};_bdg ,_gda :=_cfa .(*PSBoolean );if !_gda {return ErrTypeCheck ;};if _bdg .Val {_ggf :=_fca .Exec (_ceb );return _ggf ;};return nil ;};func (_ddec *PSOperand )pop (_cea *PSStack )error {_ ,_fagb :=_cea .Pop ();if _fagb !=nil {return _fagb ;};return nil ;};func (_agg *PSOperand )div (_deed *PSStack )error {_ebb ,_efb :=_deed .Pop ();if _efb !=nil {return _efb ;};_badd ,_efb :=_deed .Pop ();if _efb !=nil {return _efb ;};_caa ,_ege :=_ebb .(*PSReal );_ecg ,_ebba :=_ebb .(*PSInteger );if !_ege &&!_ebba {return ErrTypeCheck ;};if _ege &&_caa .Val ==0{return ErrUndefinedResult ;};if _ebba &&_ecg .Val ==0{return ErrUndefinedResult ;};_cad ,_egb :=_badd .(*PSReal );_faf ,_cec :=_badd .(*PSInteger );if !_egb &&!_cec {return ErrTypeCheck ;};var _aeb float64 =0;if _egb {_aeb =_cad .Val ;}else {_aeb =float64 (_faf .Val );};if _ege {_aeb /=_caa .Val ;}else {_aeb /=float64 (_ecg .Val );};_efb =_deed .Push (MakeReal (_aeb ));return _efb ;};func (_bg *PSReal )String ()string {return _e .Sprintf ("\u0025\u002e\u0035\u0066",_bg .Val )};func (_cb *PSReal )DebugString ()string {return _e .Sprintf ("\u0072e\u0061\u006c\u003a\u0025\u002e\u0035f",_cb .Val );};
-
-// NewPSExecutor returns an initialized PSExecutor for an input `program`.
-func NewPSExecutor (program *PSProgram )*PSExecutor {_dgf :=&PSExecutor {};_dgf .Stack =NewPSStack ();_dgf ._de =program ;return _dgf ;};func (_cefb *PSOperand )ifelse (_adcf *PSStack )error {_feb ,_gbee :=_adcf .Pop ();if _gbee !=nil {return _gbee ;};_ecgg ,_gbee :=_adcf .Pop ();if _gbee !=nil {return _gbee ;};_fea ,_gbee :=_adcf .Pop ();if _gbee !=nil {return _gbee ;};_gbc ,_gdf :=_feb .(*PSProgram );if !_gdf {return ErrTypeCheck ;};_afg ,_gdf :=_ecgg .(*PSProgram );if !_gdf {return ErrTypeCheck ;};_eeg ,_gdf :=_fea .(*PSBoolean );if !_gdf {return ErrTypeCheck ;};if _eeg .Val {_bba :=_afg .Exec (_adcf );return _bba ;};_gbee =_gbc .Exec (_adcf );return _gbee ;};func (_adf *PSOperand )index (_gfa *PSStack )error {_beab ,_egc :=_gfa .Pop ();if _egc !=nil {return _egc ;};_gga ,_bgcb :=_beab .(*PSInteger );if !_bgcb {return ErrTypeCheck ;};if _gga .Val < 0{return ErrRangeCheck ;};if _gga .Val > len (*_gfa )-1{return ErrStackUnderflow ;};_bgd :=(*_gfa )[len (*_gfa )-1-_gga .Val ];_egc =_gfa .Push (_bgd .Duplicate ());return _egc ;};func (_affa *PSParser )skipSpaces ()(int ,error ){_gec :=0;for {_gedg ,_bfg :=_affa ._acfg .Peek (1);if _bfg !=nil {return 0,_bfg ;};if _cd .IsWhiteSpace (_gedg [0]){_affa ._acfg .ReadByte ();_gec ++;}else {break ;};};return _gec ,nil ;};func (_aab *PSOperand )cvi (_dbd *PSStack )error {_acg ,_bfdf :=_dbd .Pop ();if _bfdf !=nil {return _bfdf ;};if _baae ,_adg :=_acg .(*PSReal );_adg {_gba :=int (_baae .Val );_bfdf =_dbd .Push (MakeInteger (_gba ));}else if _agb ,_afb :=_acg .(*PSInteger );_afb {_dbad :=_agb .Val ;_bfdf =_dbd .Push (MakeInteger (_dbad ));}else {return ErrTypeCheck ;};return _bfdf ;};
+func (_ffa *PSStack )DebugString ()string {_cag :="\u005b\u0020";for _ ,_bcafb :=range *_ffa {_cag +=_bcafb .DebugString ();_cag +="\u0020";};_cag +="\u005d";return _cag ;};
 
 // 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 _db []float64 ;for _ ,_dbc :=range objects {if _da ,_dc :=_dbc .(*PSInteger );_dc {_db =append (_db ,float64 (_da .Val ));}else if _cdd ,_bc :=_dbc .(*PSReal );_bc {_db =append (_db ,_cdd .Val );}else {return nil ,ErrTypeCheck ;};};return _db ,nil ;};func (_bce *PSInteger )DebugString ()string {return _e .Sprintf ("\u0069\u006e\u0074\u003a\u0025\u0064",_bce .Val );};
-
-// Empty empties the stack.
-func (_eed *PSStack )Empty (){*_eed =[]PSObject {}};func (_ceda *PSOperand )neg (_egg *PSStack )error {_gbg ,_fdbf :=_egg .Pop ();if _fdbf !=nil {return _fdbf ;};if _fdgg ,_cbc :=_gbg .(*PSReal );_cbc {_fdbf =_egg .Push (MakeReal (-_fdgg .Val ));return _fdbf ;}else if _bgcf ,_edb :=_gbg .(*PSInteger );_edb {_fdbf =_egg .Push (MakeInteger (-_bgcf .Val ));return _fdbf ;}else {return ErrTypeCheck ;};};
-
-// Execute executes the program for an input parameters `objects` and returns a slice of output objects.
-func (_ea *PSExecutor )Execute (objects []PSObject )([]PSObject ,error ){for _ ,_ac :=range objects {_be :=_ea .Stack .Push (_ac );if _be !=nil {return nil ,_be ;};};_fa :=_ea ._de .Exec (_ea .Stack );if _fa !=nil {_dfe .Log .Debug ("\u0045x\u0065c\u0020\u0066\u0061\u0069\u006c\u0065\u0064\u003a\u0020\u0025\u0076",_fa );return nil ,_fa ;};_fg :=[]PSObject (*_ea .Stack );_ea .Stack .Empty ();return _fg ,nil ;};func (_cddb *PSOperand )abs (_fgg *PSStack )error {_eef ,_fe :=_fgg .Pop ();if _fe !=nil {return _fe ;};if _baaf ,_ef :=_eef .(*PSReal );_ef {_fc :=_baaf .Val ;if _fc < 0{_fe =_fgg .Push (MakeReal (-_fc ));}else {_fe =_fgg .Push (MakeReal (_fc ));};}else if _dfeg ,_bd :=_eef .(*PSInteger );_bd {_dcc :=_dfeg .Val ;if _dcc < 0{_fe =_fgg .Push (MakeInteger (-_dcc ));}else {_fe =_fgg .Push (MakeInteger (_dcc ));};}else {return ErrTypeCheck ;};return _fe ;};func (_egd *PSParser )parseOperand ()(*PSOperand ,error ){var _cdc []byte ;for {_cee ,_afd :=_egd ._acfg .Peek (1);if _afd !=nil {if _afd ==_b .EOF {break ;};return nil ,_afd ;};if _cd .IsDelimiter (_cee [0]){break ;};if _cd .IsWhiteSpace (_cee [0]){break ;};_aec ,_ :=_egd ._acfg .ReadByte ();_cdc =append (_cdc ,_aec );};if len (_cdc )==0{return nil ,_d .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 (_cdc )),nil ;};func (_bcec *PSOperand )sub (_bfca *PSStack )error {_baf ,_fce :=_bfca .Pop ();if _fce !=nil {return _fce ;};_fafa ,_fce :=_bfca .Pop ();if _fce !=nil {return _fce ;};_afee ,_dce :=_baf .(*PSReal );_eddf ,_gab :=_baf .(*PSInteger );if !_dce &&!_gab {return ErrTypeCheck ;};_dcdd ,_cege :=_fafa .(*PSReal );_adge ,_edc :=_fafa .(*PSInteger );if !_cege &&!_edc {return ErrTypeCheck ;};if _gab &&_edc {_eabg :=_adge .Val -_eddf .Val ;_dbdc :=_bfca .Push (MakeInteger (_eabg ));return _dbdc ;};var _gedd float64 =0;if _cege {_gedd =_dcdd .Val ;}else {_gedd =float64 (_adge .Val );};if _dce {_gedd -=_afee .Val ;}else {_gedd -=float64 (_eddf .Val );};_fce =_bfca .Push (MakeReal (_gedd ));return _fce ;};
+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");
 
 // String returns a string representation of the stack.
-func (_cgaf *PSStack )String ()string {_beff :="\u005b\u0020";for _ ,_faag :=range *_cgaf {_beff +=_faag .String ();_beff +="\u0020";};_beff +="\u005d";return _beff ;};func (_cfe *PSProgram )Duplicate ()PSObject {_faa :=&PSProgram {};for _ ,_ga :=range *_cfe {_faa .Append (_ga .Duplicate ());};return _faa ;};
-
-// PSParser is a basic Postscript parser.
-type PSParser struct{_acfg *_df .Reader };func (_ad *PSBoolean )String ()string {return _e .Sprintf ("\u0025\u0076",_ad .Val )};
-
-// MakeReal returns a new PSReal object initialized with `val`.
-func MakeReal (val float64 )*PSReal {_gbdd :=PSReal {};_gbdd .Val =val ;return &_gbdd };func (_afa *PSOperand )truncate (_gebg *PSStack )error {_bgb ,_fac :=_gebg .Pop ();if _fac !=nil {return _fac ;};if _dgda ,_dbgb :=_bgb .(*PSReal );_dbgb {_bae :=int (_dgda .Val );_fac =_gebg .Push (MakeReal (float64 (_bae )));}else if _acde ,_bggg :=_bgb .(*PSInteger );_bggg {_fac =_gebg .Push (MakeInteger (_acde .Val ));}else {return ErrTypeCheck ;};return _fac ;};
-
-// MakeBool returns a new PSBoolean object initialized with `val`.
-func MakeBool (val bool )*PSBoolean {_ecbg :=PSBoolean {};_ecbg .Val =val ;return &_ecbg };
-
-// Push pushes an object on top of the stack.
-func (_aege *PSStack )Push (obj PSObject )error {if len (*_aege )> 100{return ErrStackOverflow ;};*_aege =append (*_aege ,obj );return nil ;};
-
-// Append appends an object to the PSProgram.
-func (_dd *PSProgram )Append (obj PSObject ){*_dd =append (*_dd ,obj )};func (_fcg *PSOperand )and (_aff *PSStack )error {_ece ,_cbfg :=_aff .Pop ();if _cbfg !=nil {return _cbfg ;};_bgg ,_cbfg :=_aff .Pop ();if _cbfg !=nil {return _cbfg ;};if _eae ,_bfe :=_ece .(*PSBoolean );_bfe {_gbe ,_adb :=_bgg .(*PSBoolean );if !_adb {return ErrTypeCheck ;};_cbfg =_aff .Push (MakeBool (_eae .Val &&_gbe .Val ));return _cbfg ;};if _gdd ,_ffe :=_ece .(*PSInteger );_ffe {_ddc ,_def :=_bgg .(*PSInteger );if !_def {return ErrTypeCheck ;};_cbfg =_aff .Push (MakeInteger (_gdd .Val &_ddc .Val ));return _cbfg ;};return ErrTypeCheck ;};
-
-// MakeOperand returns a new PSOperand object based on string `val`.
-func MakeOperand (val string )*PSOperand {_deacf :=PSOperand (val );return &_deacf };var ErrUnsupportedOperand =_d .New ("\u0075\u006e\u0073\u0075pp\u006f\u0072\u0074\u0065\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064");func (_bec *PSOperand )add (_daf *PSStack )error {_adc ,_beg :=_daf .Pop ();if _beg !=nil {return _beg ;};_eca ,_beg :=_daf .Pop ();if _beg !=nil {return _beg ;};_gag ,_ccb :=_adc .(*PSReal );_ccg ,_geb :=_adc .(*PSInteger );if !_ccb &&!_geb {return ErrTypeCheck ;};_ccbf ,_fcb :=_eca .(*PSReal );_cgb ,_cde :=_eca .(*PSInteger );if !_fcb &&!_cde {return ErrTypeCheck ;};if _geb &&_cde {_fgc :=_ccg .Val +_cgb .Val ;_dfa :=_daf .Push (MakeInteger (_fgc ));return _dfa ;};var _cbf float64 =0;if _ccb {_cbf =_gag .Val ;}else {_cbf =float64 (_ccg .Val );};if _fcb {_cbf +=_ccbf .Val ;}else {_cbf +=float64 (_cgb .Val );};_beg =_daf .Push (MakeReal (_cbf ));return _beg ;};
+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 ;};