Merge pull request #410 from unidoc-build/prep-rc-v3.11.1

Prepare release of UniPDF v3.11.1

common/common.go

@@ -10,7 +10,19 @@
 // terms that can be accessed at https://unidoc.io/eula/
 
 // Package common contains common properties used by the subpackages.
-package common ;import (_a "fmt";_aa "io";_dc "os";_d "path/filepath";_f "runtime";_bg "time";);const _bgg ="\u0032\u0020\u004aan\u0075\u0061\u0072\u0079\u0020\u0032\u0030\u0030\u0036\u0020\u0061\u0074\u0020\u0031\u0035\u003a\u0030\u0034";
+package common ;import (_b "fmt";_fc "io";_f "os";_c "path/filepath";_e "runtime";_g "time";);
+
+// 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 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;
+
+// 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{}){};
@@ -19,84 +31,72 @@ func (DummyLogger )Error (format string ,args ...interface{}){};
 func (DummyLogger )Info (format string ,args ...interface{}){};
 
 // Warning logs warning message.
-func (_bfc ConsoleLogger )Warning (format string ,args ...interface{}){if _bfc .LogLevel >=LogLevelWarning {_af :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_bfc .output (_dc .Stdout ,_af ,format ,args ...);};};
-
-// WriterLogger is the logger that writes data to the Output writer
-type WriterLogger struct{LogLevel LogLevel ;Output _aa .Writer ;};
+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 ;
+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 ...);};
 
-// Debug logs debug message.
-func (_cb ConsoleLogger )Debug (format string ,args ...interface{}){if _cb .LogLevel >=LogLevelDebug {_edg :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_cb .output (_dc .Stdout ,_edg ,format ,args ...);};};
+// 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"};
 
-// IsLogLevel returns true from dummy logger.
-func (DummyLogger )IsLogLevel (level LogLevel )bool {return true };
-
-// Error logs error message.
-func (_ea ConsoleLogger )Error (format string ,args ...interface{}){if _ea .LogLevel >=LogLevelError {_bb :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_ea .output (_dc .Stdout ,_bb ,format ,args ...);};};const (LogLevelTrace LogLevel =5;LogLevelDebug LogLevel =4;LogLevelInfo LogLevel =3;LogLevelNotice LogLevel =2;LogLevelWarning LogLevel =1;LogLevelError LogLevel =0;);
-
-// Info logs info message.
-func (_ff ConsoleLogger )Info (format string ,args ...interface{}){if _ff .LogLevel >=LogLevelInfo {_ca :="\u005bI\u004e\u0046\u004f\u005d\u0020";_ff .output (_dc .Stdout ,_ca ,format ,args ...);};};const _gecb =18;
-
-// Trace logs trace message.
-func (_gf ConsoleLogger )Trace (format string ,args ...interface{}){if _gf .LogLevel >=LogLevelTrace {_dcc :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_gf .output (_dc .Stdout ,_dcc ,format ,args ...);};};
-
-// Warning does nothing for dummy logger.
-func (DummyLogger )Warning (format string ,args ...interface{}){};
-
-// IsLogLevel returns true if log level is greater or equal than `level`.
-// Can be used to avoid resource intensive calls to loggers.
-func (_afa WriterLogger )IsLogLevel (level LogLevel )bool {return _afa .LogLevel >=level };
-
-// Trace does nothing for dummy logger.
-func (DummyLogger )Trace (format string ,args ...interface{}){};
+// DummyLogger does nothing.
+type DummyLogger struct{};
 
 // Notice logs notice message.
-func (_ed ConsoleLogger )Notice (format string ,args ...interface{}){if _ed .LogLevel >=LogLevelNotice {_fg :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_ed .output (_dc .Stdout ,_fg ,format ,args ...);};};
-
-// Debug logs debug message.
-func (_bfca WriterLogger )Debug (format string ,args ...interface{}){if _bfca .LogLevel >=LogLevelDebug {_de :="\u005b\u0044\u0045\u0042\u0055\u0047\u005d\u0020";_bfca .logToWriter (_bfca .Output ,_de ,format ,args ...);};};
+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 ...);};};
 
 // NewConsoleLogger creates new console logger.
-func NewConsoleLogger (logLevel LogLevel )*ConsoleLogger {return &ConsoleLogger {LogLevel :logLevel }};const _cbee =9;
-
-// Notice logs notice message.
-func (_ac WriterLogger )Notice (format string ,args ...interface{}){if _ac .LogLevel >=LogLevelNotice {_dgf :="\u005bN\u004f\u0054\u0049\u0043\u0045\u005d ";_ac .logToWriter (_ac .Output ,_dgf ,format ,args ...);};};func (_cc ConsoleLogger )output (_dg _aa .Writer ,_fa string ,_gde string ,_agge ...interface{}){_fad (_dg ,_fa ,_gde ,_agge ...);};
+func NewConsoleLogger (logLevel LogLevel )*ConsoleLogger {return &ConsoleLogger {LogLevel :logLevel }};const _aed =8;
 
 // Trace logs trace message.
-func (_ee WriterLogger )Trace (format string ,args ...interface{}){if _ee .LogLevel >=LogLevelTrace {_ggc :="\u005b\u0054\u0052\u0041\u0043\u0045\u005d\u0020";_ee .logToWriter (_ee .Output ,_ggc ,format ,args ...);};};
-
-// Warning logs warning message.
-func (_cg WriterLogger )Warning (format string ,args ...interface{}){if _cg .LogLevel >=LogLevelWarning {_ge :="\u005b\u0057\u0041\u0052\u004e\u0049\u004e\u0047\u005d\u0020";_cg .logToWriter (_cg .Output ,_ge ,format ,args ...);};};
-
-// Logger is the interface used for logging in the unipdf package.
-type Logger interface{Error (_ba string ,_e ...interface{});Warning (_ag string ,_g ...interface{});Notice (_c string ,_cd ...interface{});Info (_agg string ,_gd ...interface{});Debug (_bc string ,_gdd ...interface{});Trace (_dcf string ,_bf ...interface{});IsLogLevel (_bfd LogLevel )bool ;};
-
-// Error logs error message.
-func (_ead WriterLogger )Error (format string ,args ...interface{}){if _ead .LogLevel >=LogLevelError {_be :="\u005b\u0045\u0052\u0052\u004f\u0052\u005d\u0020";_ead .logToWriter (_ead .Output ,_be ,format ,args ...);};};
+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{}){};
 
-// Debug does nothing for dummy logger.
-func (DummyLogger )Debug (format string ,args ...interface{}){};var Log Logger =DummyLogger {};const _gec =2020;const _gda =6;func (_da WriterLogger )logToWriter (_eb _aa .Writer ,_db string ,_bgd string ,_dae ...interface{}){_fad (_eb ,_db ,_bgd ,_dae );};
+// 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 (_gg ConsoleLogger )IsLogLevel (level LogLevel )bool {return _gg .LogLevel >=level };func UtcTimeFormat (t _bg .Time )string {return t .Format (_bgg )+"\u0020\u0055\u0054\u0043"};var ReleasedAt =_bg .Date (_gec ,_cbee ,_gda ,_gecb ,_eg ,0,0,_bg .UTC );
+func (_bfgf WriterLogger )IsLogLevel (level LogLevel )bool {return _bfgf .LogLevel >=level };const _dbg =2020;
 
-// NewWriterLogger creates new 'writer' logger.
-func NewWriterLogger (logLevel LogLevel ,writer _aa .Writer )*WriterLogger {_ga :=WriterLogger {Output :writer ,LogLevel :logLevel };return &_ga ;};const Version ="\u0033\u002e\u0031\u0031\u002e\u0030";const _eg =50;
+// 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;
+
+// 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 );
+
+// Debug does nothing for dummy logger.
+func (DummyLogger )Debug (format string ,args ...interface{}){};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 ;};
 
-// DummyLogger does nothing.
-type DummyLogger struct{};func _fad (_ace _aa .Writer ,_edb string ,_cga string ,_fd ...interface{}){_ ,_cae ,_ec ,_dbc :=_f .Caller (3);if !_dbc {_cae ="\u003f\u003f\u003f";_ec =0;}else {_cae =_d .Base (_cae );};_fge :=_a .Sprintf ("\u0025s\u0020\u0025\u0073\u003a\u0025\u0064 ",_edb ,_cae ,_ec )+_cga +"\u000a";_a .Fprintf (_ace ,_fge ,_fd ...);};
-
-// SetLogger sets 'logger' to be used by the unidoc unipdf library.
-func SetLogger (logger Logger ){Log =logger };
+// IsLogLevel returns true from dummy logger.
+func (DummyLogger )IsLogLevel (level LogLevel )bool {return true };
 
 // Info logs info message.
-func (_cba WriterLogger )Info (format string ,args ...interface{}){if _cba .LogLevel >=LogLevelInfo {_cbe :="\u005bI\u004e\u0046\u004f\u005d\u0020";_cba .logToWriter (_cba .Output ,_cbe ,format ,args ...);};};
+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 );};
+
+// 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 ...);};};

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 (_f "fmt";_b "github.com/unidoc/unipdf/v3/contentstream";_e "github.com/unidoc/unipdf/v3/core";_ee "github.com/unidoc/unipdf/v3/internal/transform";_fe "github.com/unidoc/unipdf/v3/model";_g "math";);
+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";);
 
-// FlipY flips the sign of the Dy component of the vector.
-func (_aac Vector )FlipY ()Vector {_aac .Dy =-_aac .Dy ;return _aac };
-
-// 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 *_b .ContentCreator ){for _fdd ,_ffg :=range path .Points {if _fdd ==0{creator .Add_m (_ffg .X ,_ffg .Y );}else {creator .Add_l (_ffg .X ,_ffg .Y );};};};const (LineStyleSolid LineStyle =0;LineStyleDashed LineStyle =1;);
-
-// Rotate rotates the vector by the specified angle.
-func (_ga Vector )Rotate (phi float64 )Vector {_ccd :=_ga .Magnitude ();_aaa :=_ga .GetPolarAngle ();return NewVectorPolar (_ccd ,_aaa +phi );};
-
-// NewCubicBezierCurve returns a new cubic Bezier curve.
-func NewCubicBezierCurve (x0 ,y0 ,x1 ,y1 ,x2 ,y2 ,x3 ,y3 float64 )CubicBezierCurve {_fea :=CubicBezierCurve {};_fea .P0 =NewPoint (x0 ,y0 );_fea .P1 =NewPoint (x1 ,y1 );_fea .P2 =NewPoint (x2 ,y2 );_fea .P3 =NewPoint (x3 ,y3 );return _fea ;};
-
-// BoundingBox represents the smallest rectangular area that encapsulates an object.
-type BoundingBox struct{X float64 ;Y float64 ;Width float64 ;Height float64 ;};
-
-// ToPdfRectangle returns the bounding box as a PDF rectangle.
-func (_dgg BoundingBox )ToPdfRectangle ()*_fe .PdfRectangle {return &_fe .PdfRectangle {Llx :_dgg .X ,Lly :_dgg .Y ,Urx :_dgg .X +_dgg .Width ,Ury :_dgg .Y +_dgg .Height };};
-
-// 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 *_fe .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_fe .PdfColorDeviceRGB ;Opacity float64 ;};
-
-// GetBoundingBox returns the bounding box of the path.
-func (_dg Path )GetBoundingBox ()BoundingBox {_cd :=BoundingBox {};_cgf :=0.0;_ce :=0.0;_dc :=0.0;_bb :=0.0;for _af ,_ea :=range _dg .Points {if _af ==0{_cgf =_ea .X ;_ce =_ea .X ;_dc =_ea .Y ;_bb =_ea .Y ;continue ;};if _ea .X < _cgf {_cgf =_ea .X ;};if _ea .X > _ce {_ce =_ea .X ;};if _ea .Y < _dc {_dc =_ea .Y ;};if _ea .Y > _bb {_bb =_ea .Y ;};};_cd .X =_cgf ;_cd .Y =_dc ;_cd .Width =_ce -_cgf ;_cd .Height =_bb -_dc ;return _cd ;};
-
-// 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 *_b .ContentCreator ){for _ebf ,_bcga :=range bpath .Curves {if _ebf ==0{creator .Add_m (_bcga .P0 .X ,_bcga .P0 .Y );};creator .Add_c (_bcga .P1 .X ,_bcga .P1 .Y ,_bcga .P2 .X ,_bcga .P2 .Y ,_bcga .P3 .X ,_bcga .P3 .Y );};};
-
-// 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 *_fe .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineEndingStyle1 LineEndingStyle ;LineEndingStyle2 LineEndingStyle ;LineStyle LineStyle ;};
-
-// Scale scales the vector by the specified factor.
-func (_ceb Vector )Scale (factor float64 )Vector {_ffc :=_ceb .Magnitude ();_ccc :=_ceb .GetPolarAngle ();_ceb .Dx =factor *_ffc *_g .Cos (_ccc );_ceb .Dy =factor *_ffc *_g .Sin (_ccc );return _ceb ;};
-
-// NewPoint returns a new point with the coordinates x, y.
-func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};func (_adb Point )String ()string {return _f .Sprintf ("(\u0025\u002e\u0031\u0066\u002c\u0025\u002e\u0031\u0066\u0029",_adb .X ,_adb .Y );};
+// 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 *_fe .PdfColorDeviceRGB ;FillEnabled bool ;FillColor *_fe .PdfColorDeviceRGB ;};
+type PolyBezierCurve struct{Curves []CubicBezierCurve ;BorderWidth float64 ;BorderColor *_a .PdfColorDeviceRGB ;FillEnabled bool ;FillColor *_a .PdfColorDeviceRGB ;};
 
-// 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 (_edb Polyline )Draw (gsName string )([]byte ,*_fe .PdfRectangle ,error ){if _edb .LineColor ==nil {_edb .LineColor =_fe .NewPdfColorDeviceRGB (0,0,0);};_bagd :=NewPath ();for _ ,_bda :=range _edb .Points {_bagd =_bagd .AppendPoint (_bda );};_gfb :=_b .NewContentCreator ();_gfb .Add_q ();_gfb .Add_RG (_edb .LineColor .R (),_edb .LineColor .G (),_edb .LineColor .B ());_gfb .Add_w (_edb .LineWidth );if len (gsName )> 1{_gfb .Add_gs (_e .PdfObjectName (gsName ));};DrawPathWithCreator (_bagd ,_gfb );_gfb .Add_S ();_gfb .Add_Q ();return _gfb .Bytes (),_bagd .GetBoundingBox ().ToPdfRectangle (),nil ;};
+// 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 )};
 
-// AppendCurve appends the specified Bezier curve to the path.
-func (_de CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_de .Curves =append (_de .Curves ,curve );return _de ;};
-
-// Magnitude returns the magnitude of the vector.
-func (_gde Vector )Magnitude ()float64 {return _g .Sqrt (_g .Pow (_gde .Dx ,2.0)+_g .Pow (_gde .Dy ,2.0))};
-
-// Copy returns a clone of the Bezier path.
-func (_fg CubicBezierPath )Copy ()CubicBezierPath {_aa :=CubicBezierPath {};_aa .Curves =[]CubicBezierCurve {};for _ ,_dd :=range _fg .Curves {_aa .Curves =append (_aa .Curves ,_dd );};return _aa ;};
-
-// Flip changes the sign of the vector: -vector.
-func (_eecg Vector )Flip ()Vector {_cbg :=_eecg .Magnitude ();_cgd :=_eecg .GetPolarAngle ();_eecg .Dx =_cbg *_g .Cos (_cgd +_g .Pi );_eecg .Dy =_cbg *_g .Sin (_cgd +_g .Pi );return _eecg ;};
+// 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 (_afa Polygon )Draw (gsName string )([]byte ,*_fe .PdfRectangle ,error ){_dcf :=_b .NewContentCreator ();_dcf .Add_q ();_afa .FillEnabled =_afa .FillEnabled &&_afa .FillColor !=nil ;if _afa .FillEnabled {_dcf .Add_rg (_afa .FillColor .R (),_afa .FillColor .G (),_afa .FillColor .B ());};_afa .BorderEnabled =_afa .BorderEnabled &&_afa .BorderColor !=nil ;if _afa .BorderEnabled {_dcf .Add_RG (_afa .BorderColor .R (),_afa .BorderColor .G (),_afa .BorderColor .B ());_dcf .Add_w (_afa .BorderWidth );};if len (gsName )> 1{_dcf .Add_gs (_e .PdfObjectName (gsName ));};_ead :=NewPath ();for _ ,_gff :=range _afa .Points {for _dff ,_edf :=range _gff {_ead =_ead .AppendPoint (_edf );if _dff ==0{_dcf .Add_m (_edf .X ,_edf .Y );}else {_dcf .Add_l (_edf .X ,_edf .Y );};};_dcf .Add_h ();};if _afa .FillEnabled &&_afa .BorderEnabled {_dcf .Add_B ();}else if _afa .FillEnabled {_dcf .Add_f ();}else if _afa .BorderEnabled {_dcf .Add_S ();};_dcf .Add_Q ();return _dcf .Bytes (),_ead .GetBoundingBox ().ToPdfRectangle (),nil ;};
+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 ;};
 
-// 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 (_bf BasicLine )Draw (gsName string )([]byte ,*_fe .PdfRectangle ,error ){_agd :=_bf .LineWidth ;_egd :=NewPath ();_egd =_egd .AppendPoint (NewPoint (_bf .X1 ,_bf .Y1 ));_egd =_egd .AppendPoint (NewPoint (_bf .X2 ,_bf .Y2 ));_fbe :=_b .NewContentCreator ();_bab :=_egd .GetBoundingBox ();DrawPathWithCreator (_egd ,_fbe );if _bf .LineStyle ==LineStyleDashed {_fbe .Add_d ([]int64 {1,1},0);};_fbe .Add_RG (_bf .LineColor .R (),_bf .LineColor .G (),_bf .LineColor .B ()).Add_w (_agd ).Add_S ().Add_Q ();return _fbe .Bytes (),_bab .ToPdfRectangle (),nil ;};
-
-// Copy returns a clone of the path.
-func (_fc Path )Copy ()Path {_ag :=Path {};_ag .Points =[]Point {};for _ ,_gga :=range _fc .Points {_ag .Points =append (_ag .Points ,_gga );};return _ag ;};
-
-// Polygon is a multi-point shape that can be drawn to a PDF content stream.
-type Polygon struct{Points [][]Point ;FillEnabled bool ;FillColor *_fe .PdfColorDeviceRGB ;BorderEnabled bool ;BorderColor *_fe .PdfColorDeviceRGB ;BorderWidth float64 ;};
-
-// Length returns the number of points in the path.
-func (_bcg Path )Length ()int {return len (_bcg .Points )};
-
-// GetBoundingBox returns the bounding box of the Bezier path.
-func (_efe CubicBezierPath )GetBoundingBox ()Rectangle {_gc :=Rectangle {};_cb :=0.0;_ddb :=0.0;_aeb :=0.0;_ca :=0.0;for _cf ,_ec :=range _efe .Curves {_db :=_ec .GetBounds ();if _cf ==0{_cb =_db .Llx ;_ddb =_db .Urx ;_aeb =_db .Lly ;_ca =_db .Ury ;continue ;};if _db .Llx < _cb {_cb =_db .Llx ;};if _db .Urx > _ddb {_ddb =_db .Urx ;};if _db .Lly < _aeb {_aeb =_db .Lly ;};if _db .Ury > _ca {_ca =_db .Ury ;};};_gc .X =_cb ;_gc .Y =_aeb ;_gc .Width =_ddb -_cb ;_gc .Height =_ca -_aeb ;return _gc ;};
-
-// Add shifts the coordinates of the point with dx, dy and returns the result.
-func (_cff Point )Add (dx ,dy float64 )Point {_cff .X +=dx ;_cff .Y +=dy ;return _cff };
-
-// NewCubicBezierPath returns a new empty cubic Bezier path.
-func NewCubicBezierPath ()CubicBezierPath {_da :=CubicBezierPath {};_da .Curves =[]CubicBezierCurve {};return _da ;};
-
-// 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 (_bcfe Line )Draw (gsName string )([]byte ,*_fe .PdfRectangle ,error ){_eef ,_gd :=_bcfe .X1 ,_bcfe .X2 ;_gdf ,_efd :=_bcfe .Y1 ,_bcfe .Y2 ;_bcgf :=_efd -_gdf ;_eeg :=_gd -_eef ;_efa :=_g .Atan2 (_bcgf ,_eeg );L :=_g .Sqrt (_g .Pow (_eeg ,2.0)+_g .Pow (_bcgf ,2.0));_cdb :=_bcfe .LineWidth ;_afc :=_g .Pi ;_gfe :=1.0;if _eeg < 0{_gfe *=-1.0;};if _bcgf < 0{_gfe *=-1.0;};VsX :=_gfe *(-_cdb /2*_g .Cos (_efa +_afc /2));VsY :=_gfe *(-_cdb /2*_g .Sin (_efa +_afc /2)+_cdb *_g .Sin (_efa +_afc /2));V1X :=VsX +_cdb /2*_g .Cos (_efa +_afc /2);V1Y :=VsY +_cdb /2*_g .Sin (_efa +_afc /2);V2X :=VsX +_cdb /2*_g .Cos (_efa +_afc /2)+L *_g .Cos (_efa );V2Y :=VsY +_cdb /2*_g .Sin (_efa +_afc /2)+L *_g .Sin (_efa );V3X :=VsX +_cdb /2*_g .Cos (_efa +_afc /2)+L *_g .Cos (_efa )+_cdb *_g .Cos (_efa -_afc /2);V3Y :=VsY +_cdb /2*_g .Sin (_efa +_afc /2)+L *_g .Sin (_efa )+_cdb *_g .Sin (_efa -_afc /2);V4X :=VsX +_cdb /2*_g .Cos (_efa -_afc /2);V4Y :=VsY +_cdb /2*_g .Sin (_efa -_afc /2);_daa :=NewPath ();_daa =_daa .AppendPoint (NewPoint (V1X ,V1Y ));_daa =_daa .AppendPoint (NewPoint (V2X ,V2Y ));_daa =_daa .AppendPoint (NewPoint (V3X ,V3Y ));_daa =_daa .AppendPoint (NewPoint (V4X ,V4Y ));_ece :=_bcfe .LineEndingStyle1 ;_ebb :=_bcfe .LineEndingStyle2 ;_dge :=3*_cdb ;_ceg :=3*_cdb ;_ac :=(_ceg -_cdb )/2;if _ebb ==LineEndingStyleArrow {_affb :=_daa .GetPointNumber (2);_fde :=NewVectorPolar (_dge ,_efa +_afc );_dfe :=_affb .AddVector (_fde );_bgc :=NewVectorPolar (_ceg /2,_efa +_afc /2);_afag :=NewVectorPolar (_dge ,_efa );_ecc :=NewVectorPolar (_ac ,_efa +_afc /2);_dce :=_dfe .AddVector (_ecc );_cfg :=_afag .Add (_bgc .Flip ());_fb :=_dce .AddVector (_cfg );_cec :=_bgc .Scale (2).Flip ().Add (_cfg .Flip ());_fbb :=_fb .AddVector (_cec );_ba :=_dfe .AddVector (NewVectorPolar (_cdb ,_efa -_afc /2));_eec :=NewPath ();_eec =_eec .AppendPoint (_daa .GetPointNumber (1));_eec =_eec .AppendPoint (_dfe );_eec =_eec .AppendPoint (_dce );_eec =_eec .AppendPoint (_fb );_eec =_eec .AppendPoint (_fbb );_eec =_eec .AppendPoint (_ba );_eec =_eec .AppendPoint (_daa .GetPointNumber (4));_daa =_eec ;};if _ece ==LineEndingStyleArrow {_dffa :=_daa .GetPointNumber (1);_aab :=_daa .GetPointNumber (_daa .Length ());_cecc :=NewVectorPolar (_cdb /2,_efa +_afc +_afc /2);_cef :=_dffa .AddVector (_cecc );_gdc :=NewVectorPolar (_dge ,_efa ).Add (NewVectorPolar (_ceg /2,_efa +_afc /2));_gb :=_cef .AddVector (_gdc );_aec :=NewVectorPolar (_ac ,_efa -_afc /2);_bag :=_gb .AddVector (_aec );_gfed :=NewVectorPolar (_dge ,_efa );_bd :=_aab .AddVector (_gfed );_dee :=NewVectorPolar (_ac ,_efa +_afc +_afc /2);_dfg :=_bd .AddVector (_dee );_gda :=_cef ;_egb :=NewPath ();_egb =_egb .AppendPoint (_cef );_egb =_egb .AppendPoint (_gb );_egb =_egb .AppendPoint (_bag );for _ ,_fcb :=range _daa .Points [1:len (_daa .Points )-1]{_egb =_egb .AppendPoint (_fcb );};_egb =_egb .AppendPoint (_bd );_egb =_egb .AppendPoint (_dfg );_egb =_egb .AppendPoint (_gda );_daa =_egb ;};_ebc :=_b .NewContentCreator ();_ebc .Add_q ().Add_rg (_bcfe .LineColor .R (),_bcfe .LineColor .G (),_bcfe .LineColor .B ());if len (gsName )> 1{_ebc .Add_gs (_e .PdfObjectName (gsName ));};_daa =_daa .Offset (_bcfe .X1 ,_bcfe .Y1 );_dfa :=_daa .GetBoundingBox ();DrawPathWithCreator (_daa ,_ebc );if _bcfe .LineStyle ==LineStyleDashed {_ebc .Add_d ([]int64 {1,1},0).Add_S ().Add_f ().Add_Q ();}else {_ebc .Add_f ().Add_Q ();};return _ebc .Bytes (),_dfa .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 ;
 
-// 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 (_dcg Rectangle )Draw (gsName string )([]byte ,*_fe .PdfRectangle ,error ){_fed :=NewPath ();_fed =_fed .AppendPoint (NewPoint (0,0));_fed =_fed .AppendPoint (NewPoint (0,_dcg .Height ));_fed =_fed .AppendPoint (NewPoint (_dcg .Width ,_dcg .Height ));_fed =_fed .AppendPoint (NewPoint (_dcg .Width ,0));_fed =_fed .AppendPoint (NewPoint (0,0));if _dcg .X !=0||_dcg .Y !=0{_fed =_fed .Offset (_dcg .X ,_dcg .Y );};_ff :=_b .NewContentCreator ();_ff .Add_q ();if _dcg .FillEnabled {_ff .Add_rg (_dcg .FillColor .R (),_dcg .FillColor .G (),_dcg .FillColor .B ());};if _dcg .BorderEnabled {_ff .Add_RG (_dcg .BorderColor .R (),_dcg .BorderColor .G (),_dcg .BorderColor .B ());_ff .Add_w (_dcg .BorderWidth );};if len (gsName )> 1{_ff .Add_gs (_e .PdfObjectName (gsName ));};DrawPathWithCreator (_fed ,_ff );_ff .Add_h ();if _dcg .FillEnabled &&_dcg .BorderEnabled {_ff .Add_B ();}else if _dcg .FillEnabled {_ff .Add_f ();}else if _dcg .BorderEnabled {_ff .Add_S ();};_ff .Add_Q ();return _ff .Bytes (),_fed .GetBoundingBox ().ToPdfRectangle (),nil ;};
+// 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 ;};
 
-// CubicBezierPath represents a collection of cubic Bezier curves.
-type CubicBezierPath struct{Curves []CubicBezierCurve ;};
+// 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 ;};
 
-// 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 *_fe .PdfColorDeviceRGB ;Opacity float64 ;LineWidth float64 ;LineStyle LineStyle ;};
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
 
 // Vector represents a two-dimensional vector.
-type Vector struct{Dx float64 ;Dy float64 ;};const (LineEndingStyleNone LineEndingStyle =0;LineEndingStyleArrow LineEndingStyle =1;LineEndingStyleButt LineEndingStyle =2;);
+type Vector struct{Dx float64 ;Dy float64 ;};
 
-// NewPath returns a new empty path.
-func NewPath ()Path {return Path {}};
+// 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 ;};
+
+// AppendCurve appends the specified Bezier curve to the path.
+func (_ag CubicBezierPath )AppendCurve (curve CubicBezierCurve )CubicBezierPath {_ag .Curves =append (_ag .Curves ,curve );return _ag ;};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 (_bg CubicBezierPath )Offset (offX ,offY float64 )CubicBezierPath {for _dad ,_cg :=range _bg .Curves {_bg .Curves [_dad ]=_cg .AddOffsetXY (offX ,offY );};return _bg ;};
+func (_ec CubicBezierPath )Offset (offX ,offY float64 )CubicBezierPath {for _da ,_fc :=range _ec .Curves {_ec .Curves [_da ]=_fc .AddOffsetXY (offX ,offY );};return _ec ;};
 
 // 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 ;};
 
-// LineEndingStyle defines the line ending style for lines.
-// The currently supported line ending styles are None, Arrow (ClosedArrow) and Butt.
-type LineEndingStyle int ;
-
-// 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 *_fe .PdfColorDeviceRGB ;BorderEnabled bool ;BorderWidth float64 ;BorderColor *_fe .PdfColorDeviceRGB ;Opacity float64 ;};
-
-// GetBounds returns the bounding box of the Bezier curve.
-func (_d CubicBezierCurve )GetBounds ()_fe .PdfRectangle {_ggc :=_d .P0 .X ;_ae :=_d .P0 .X ;_ad :=_d .P0 .Y ;_eb :=_d .P0 .Y ;for _c :=0.0;_c <=1.0;_c +=0.001{Rx :=_d .P0 .X *_g .Pow (1-_c ,3)+_d .P1 .X *3*_c *_g .Pow (1-_c ,2)+_d .P2 .X *3*_g .Pow (_c ,2)*(1-_c )+_d .P3 .X *_g .Pow (_c ,3);Ry :=_d .P0 .Y *_g .Pow (1-_c ,3)+_d .P1 .Y *3*_c *_g .Pow (1-_c ,2)+_d .P2 .Y *3*_g .Pow (_c ,2)*(1-_c )+_d .P3 .Y *_g .Pow (_c ,3);if Rx < _ggc {_ggc =Rx ;};if Rx > _ae {_ae =Rx ;};if Ry < _ad {_ad =Ry ;};if Ry > _eb {_eb =Ry ;};};_ef :=_fe .PdfRectangle {};_ef .Llx =_ggc ;_ef .Lly =_ad ;_ef .Urx =_ae ;_ef .Ury =_eb ;return _ef ;};
-
 // 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 (_ge PolyBezierCurve )Draw (gsName string )([]byte ,*_fe .PdfRectangle ,error ){if _ge .BorderColor ==nil {_ge .BorderColor =_fe .NewPdfColorDeviceRGB (0,0,0);};_feb :=NewCubicBezierPath ();for _ ,_cc :=range _ge .Curves {_feb =_feb .AppendCurve (_cc );};_age :=_b .NewContentCreator ();_age .Add_q ();_ge .FillEnabled =_ge .FillEnabled &&_ge .FillColor !=nil ;if _ge .FillEnabled {_age .Add_rg (_ge .FillColor .R (),_ge .FillColor .G (),_ge .FillColor .B ());};_age .Add_RG (_ge .BorderColor .R (),_ge .BorderColor .G (),_ge .BorderColor .B ());_age .Add_w (_ge .BorderWidth );if len (gsName )> 1{_age .Add_gs (_e .PdfObjectName (gsName ));};for _ ,_ccf :=range _feb .Curves {_age .Add_m (_ccf .P0 .X ,_ccf .P0 .Y );_age .Add_c (_ccf .P1 .X ,_ccf .P1 .Y ,_ccf .P2 .X ,_ccf .P2 .Y ,_ccf .P3 .X ,_ccf .P3 .Y );};if _ge .FillEnabled {_age .Add_h ();_age .Add_B ();}else {_age .Add_S ();};_age .Add_Q ();return _age .Bytes (),_feb .GetBoundingBox ().ToPdfRectangle (),nil ;};
+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 ;};
 
-// Polyline defines a slice of points that are connected as straight lines.
-type Polyline struct{Points []Point ;LineColor *_fe .PdfColorDeviceRGB ;LineWidth float64 ;};
+// 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 ;};
 
-// 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 {_bbc :=Vector {};_bbc .Dx =b .X -a .X ;_bbc .Dy =b .Y -a .Y ;return _bbc ;};
+// CubicBezierPath represents a collection of cubic Bezier curves.
+type CubicBezierPath struct{Curves []CubicBezierCurve ;};
 
-// NewVector returns a new vector with the direction specified by dx and dy.
-func NewVector (dx ,dy float64 )Vector {_cce :=Vector {};_cce .Dx =dx ;_cce .Dy =dy ;return _cce };
-
-// GetPointNumber returns the path point at the index specified by number.
-// The index is 1-based.
-func (_be Path )GetPointNumber (number int )Point {if number < 1||number > len (_be .Points ){return Point {};};return _be .Points [number -1];};
-
-// Add adds the specified vector to the current one and returns the result.
-func (_ab Vector )Add (other Vector )Vector {_ab .Dx +=other .Dx ;_ab .Dy +=other .Dy ;return _ab };
-
-// Rotate returns a new Point at `p` rotated by `theta` degrees.
-func (_fa Point )Rotate (theta float64 )Point {_agg :=_ee .NewPoint (_fa .X ,_fa .Y ).Rotate (theta );return NewPoint (_agg .X ,_agg .Y );};
-
-// Path consists of straight line connections between each point defined in an array of points.
-type Path struct{Points []Point ;};
-
-// AddOffsetXY adds X,Y offset to all points on a curve.
-func (_gg CubicBezierCurve )AddOffsetXY (offX ,offY float64 )CubicBezierCurve {_gg .P0 .X +=offX ;_gg .P1 .X +=offX ;_gg .P2 .X +=offX ;_gg .P3 .X +=offX ;_gg .P0 .Y +=offY ;_gg .P1 .Y +=offY ;_gg .P2 .Y +=offY ;_gg .P3 .Y +=offY ;return _gg ;};
-
-// RemovePoint removes the point at the index specified by number from the
-// path. The index is 1-based.
-func (_cfd Path )RemovePoint (number int )Path {if number < 1||number > len (_cfd .Points ){return _cfd ;};_add :=number -1;_cfd .Points =append (_cfd .Points [:_add ],_cfd .Points [_add +1:]...);return _cfd ;};
-
-// AppendPoint adds the specified point to the path.
-func (_cbd Path )AppendPoint (point Point )Path {_cbd .Points =append (_cbd .Points ,point );return _cbd };
-
-// NewVectorPolar returns a new vector calculated from the specified
-// magnitude and angle.
-func NewVectorPolar (length float64 ,theta float64 )Vector {_eeb :=Vector {};_eeb .Dx =length *_g .Cos (theta );_eeb .Dy =length *_g .Sin (theta );return _eeb ;};
-
-// FlipX flips the sign of the Dx component of the vector.
-func (_cgc Vector )FlipX ()Vector {_cgc .Dx =-_cgc .Dx ;return _cgc };
-
-// 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 (_ecd Circle )Draw (gsName string )([]byte ,*_fe .PdfRectangle ,error ){_bcf :=_ecd .Width /2;_gfg :=_ecd .Height /2;if _ecd .BorderEnabled {_bcf -=_ecd .BorderWidth /2;_gfg -=_ecd .BorderWidth /2;};_agb :=0.551784;_fce :=_bcf *_agb ;_fd :=_gfg *_agb ;_ggca :=NewCubicBezierPath ();_ggca =_ggca .AppendCurve (NewCubicBezierCurve (-_bcf ,0,-_bcf ,_fd ,-_fce ,_gfg ,0,_gfg ));_ggca =_ggca .AppendCurve (NewCubicBezierCurve (0,_gfg ,_fce ,_gfg ,_bcf ,_fd ,_bcf ,0));_ggca =_ggca .AppendCurve (NewCubicBezierCurve (_bcf ,0,_bcf ,-_fd ,_fce ,-_gfg ,0,-_gfg ));_ggca =_ggca .AppendCurve (NewCubicBezierCurve (0,-_gfg ,-_fce ,-_gfg ,-_bcf ,-_fd ,-_bcf ,0));_ggca =_ggca .Offset (_bcf ,_gfg );if _ecd .BorderEnabled {_ggca =_ggca .Offset (_ecd .BorderWidth /2,_ecd .BorderWidth /2);};if _ecd .X !=0||_ecd .Y !=0{_ggca =_ggca .Offset (_ecd .X ,_ecd .Y );};_dbg :=_b .NewContentCreator ();_dbg .Add_q ();if _ecd .FillEnabled {_dbg .Add_rg (_ecd .FillColor .R (),_ecd .FillColor .G (),_ecd .FillColor .B ());};if _ecd .BorderEnabled {_dbg .Add_RG (_ecd .BorderColor .R (),_ecd .BorderColor .G (),_ecd .BorderColor .B ());_dbg .Add_w (_ecd .BorderWidth );};if len (gsName )> 1{_dbg .Add_gs (_e .PdfObjectName (gsName ));};DrawBezierPathWithCreator (_ggca ,_dbg );_dbg .Add_h ();if _ecd .FillEnabled &&_ecd .BorderEnabled {_dbg .Add_B ();}else if _ecd .FillEnabled {_dbg .Add_f ();}else if _ecd .BorderEnabled {_dbg .Add_S ();};_dbg .Add_Q ();_eg :=_ggca .GetBoundingBox ();if _ecd .BorderEnabled {_eg .Height +=_ecd .BorderWidth ;_eg .Width +=_ecd .BorderWidth ;_eg .X -=_ecd .BorderWidth /2;_eg .Y -=_ecd .BorderWidth /2;};return _dbg .Bytes (),_eg .ToPdfRectangle (),nil ;};
-
-// Offset shifts the path with the specified offsets.
-func (_gf Path )Offset (offX ,offY float64 )Path {for _df ,_ed :=range _gf .Points {_gf .Points [_df ]=_ed .Add (offX ,offY );};return _gf ;};
-
-// ToPdfRectangle returns the rectangle as a PDF rectangle.
-func (_gfa Rectangle )ToPdfRectangle ()*_fe .PdfRectangle {return &_fe .PdfRectangle {Llx :_gfa .X ,Lly :_gfa .Y ,Urx :_gfa .X +_gfa .Width ,Ury :_gfa .Y +_gfa .Height };};
-
-// GetPolarAngle returns the angle the magnitude of the vector forms with the
-// positive X-axis going counterclockwise.
-func (_faf Vector )GetPolarAngle ()float64 {return _g .Atan2 (_faf .Dy ,_faf .Dx )};
-
-// AddVector adds vector to a point.
-func (_dac Point )AddVector (v Vector )Point {_dac .X +=v .Dx ;_dac .Y +=v .Dy ;return _dac };
+// NewPath returns a new empty path.
+func NewPath ()Path {return Path {}};

core/security/crypt/crypt.go

@@ -9,49 +9,61 @@
 // 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 (_a "crypto/aes";_c "crypto/cipher";_d "crypto/md5";_e "crypto/rand";_aa "crypto/rc4";_g "fmt";_ee "github.com/unidoc/unipdf/v3/common";_ag "github.com/unidoc/unipdf/v3/core/security";_bc "io";);func init (){_bda ("\u0041\u0045\u0053V\u0032",_ad )};var _ Filter =filterV2 {};func (filterIdentity )Name ()string {return "\u0049\u0064\u0065\u006e\u0074\u0069\u0074\u0079"};
+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 )};
 
-// FilterDict represents information from a CryptFilter dictionary.
-type FilterDict struct{CFM string ;AuthEvent _ag .AuthEvent ;Length int ;};func (filterIdentity )KeyLength ()int {return 0};func _ad (_af FilterDict )(Filter ,error ){if _af .Length ==128{_ee .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",_af .Length );_af .Length /=8;};if _af .Length !=0&&_af .Length !=16{return nil ,_g .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",_af .Length );};return filterAESV2 {},nil ;};func _ade (_gd FilterDict )(Filter ,error ){if _gd .Length ==256{_ee .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",_gd .Length );_gd .Length /=8;};if _gd .Length !=0&&_gd .Length !=32{return nil ,_g .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",_gd .Length );};return filterAESV3 {},nil ;};var (_gba =make (map[string ]filterFunc ););
+// 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 ;};
 
-// NewFilterAESV2 creates an AES-based filter with a 128 bit key (AESV2).
-func NewFilterAESV2 ()Filter {_da ,_ab :=_ad (FilterDict {});if _ab !=nil {_ee .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",_ab );return filterAESV2 {};};return _da ;};
+// 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 {}};func init (){_bda ("\u0041\u0045\u0053V\u0033",_ade )};type filterAES struct{};
+func NewIdentity ()Filter {return filterIdentity {}};
 
-// Name implements Filter interface.
-func (filterAESV2 )Name ()string {return "\u0041\u0045\u0053V\u0032"};func _fgf (_cba string )(filterFunc ,error ){_ccd :=_gba [string (_cba )];if _ccd ==nil {return nil ,_g .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",_cba );};return _ccd ,nil ;};
+// 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 (filterAESV2 )KeyLength ()int {return 128/8};var _ Filter =filterAESV2 {};
+func (_gdc filterV2 )KeyLength ()int {return _gdc ._bb };func init (){_dce ("\u0041\u0045\u0053V\u0033",_ec )};func (filterIdentity )HandlerVersion ()(V ,R int ){return ;};
 
-// KeyLength implements Filter interface.
-func (_cfb filterV2 )KeyLength ()int {return _cfb ._fec };
+// 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 };
 
-// MakeKey implements Filter interface.
-func (filterAESV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _gfg (objNum ,genNum ,ekey ,true );};
+// 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 )};
 
 // HandlerVersion implements Filter interface.
 func (filterAESV3 )HandlerVersion ()(V ,R int ){V ,R =5,6;return ;};
 
-// DecryptBytes implements Filter interface.
-func (filterV2 )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_dc ,_cdc :=_aa .NewCipher (okey );if _cdc !=nil {return nil ,_cdc ;};_ee .Log .Trace ("\u0052\u00434\u0020\u0044\u0065c\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_dc .XORKeyStream (buf ,buf );_ee .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};func (filterAES )DecryptBytes (buf []byte ,okey []byte )([]byte ,error ){_ea ,_gf :=_a .NewCipher (okey );if _gf !=nil {return nil ,_gf ;};if len (buf )< 16{_ee .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 ,_g .Errorf ("\u0041\u0045\u0053\u003a B\u0075\u0066\u0020\u006c\u0065\u006e\u0020\u003c\u0020\u0031\u0036\u0020\u0028\u0025d\u0029",len (buf ));};_bg :=buf [:16];buf =buf [16:];if len (buf )%16!=0{_ee .Log .Debug ("\u0020\u0069\u0076\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (_bg ),_bg );_ee .Log .Debug ("\u0062\u0075\u0066\u0020\u0028\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,_g .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 ));};_bf :=_c .NewCBCDecrypter (_ea ,_bg );_ee .Log .Trace ("A\u0045\u0053\u0020\u0044ec\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );_ee .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 );_bf .CryptBlocks (buf ,buf );_ee .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );if len (buf )==0{_ee .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 ;};_ege :=int (buf [len (buf )-1]);if _ege > len (buf ){_ee .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",_ege ,len (buf ));return buf ,_g .Errorf ("\u0069n\u0076a\u006c\u0069\u0064\u0020\u0070a\u0064\u0020l\u0065\u006e\u0067\u0074\u0068");};buf =buf [:len (buf )-_ege ];return buf ,nil ;};type filterAESV2 struct{filterAES };func init (){_bda ("\u0056\u0032",_cg )};func (filterIdentity )HandlerVersion ()(V ,R int ){return ;};
+// 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 {}};
 
-// Name implements Filter interface.
-func (filterAESV3 )Name ()string {return "\u0041\u0045\u0053V\u0033"};
+// 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 (_eff filterV2 )PDFVersion ()[2]int {return [2]int {}};func (filterAES )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_ff ,_afb :=_a .NewCipher (okey );if _afb !=nil {return nil ,_afb ;};_ee .Log .Trace ("A\u0045\u0053\u0020\u0045nc\u0072y\u0070\u0074\u0020\u0028\u0025d\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );const _eg =_a .BlockSize ;_ef :=_eg -len (buf )%_eg ;for _bcg :=0;_bcg < _ef ;_bcg ++{buf =append (buf ,byte (_ef ));};_ee .Log .Trace ("\u0050a\u0064d\u0065\u0064\u0020\u0074\u006f \u0025\u0064 \u0062\u0079\u0074\u0065\u0073",len (buf ));_adf :=make ([]byte ,_eg +len (buf ));_cd :=_adf [:_eg ];if _ ,_gc :=_bc .ReadFull (_e .Reader ,_cd );_gc !=nil {return nil ,_gc ;};_fg :=_c .NewCBCEncrypter (_ff ,_cd );_fg .CryptBlocks (_adf [_eg :],buf );buf =_adf ;_ee .Log .Trace ("\u0074\u006f\u0020(\u0025\u0064\u0029\u003a\u0020\u0025\u0020\u0078",len (buf ),buf );return buf ,nil ;};func (filterIdentity )MakeKey (objNum ,genNum uint32 ,fkey []byte )([]byte ,error ){return fkey ,nil };
-
-// MakeKey implements Filter interface.
-func (_ffc filterV2 )MakeKey (objNum ,genNum uint32 ,ekey []byte )([]byte ,error ){return _gfg (objNum ,genNum ,ekey ,false );};
-
-// PDFVersion implements Filter interface.
-func (filterAESV2 )PDFVersion ()[2]int {return [2]int {1,5}};
+func (filterAESV3 )PDFVersion ()[2]int {return [2]int {2,0}};var _ Filter =filterV2 {};
 
 // Name implements Filter interface.
 func (filterV2 )Name ()string {return "\u0056\u0032"};
@@ -73,36 +85,24 @@ 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 (_eee ,_gfgc uint32 ,_gcf []byte )([]byte ,error );
+MakeKey (_efc ,_be uint32 ,_ae []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 (_gga []byte ,_ga []byte )([]byte ,error );
+EncryptBytes (_aee []byte ,_ba []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 (_ffd []byte ,_eb []byte )([]byte ,error );};var _ Filter =filterAESV3 {};
+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 };
 
-// HandlerVersion implements Filter interface.
-func (_cga 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 (_fcf FilterDict )(Filter ,error );type filterV2 struct{_fec int };
+// Name implements Filter interface.
+func (filterAESV3 )Name ()string {return "\u0041\u0045\u0053V\u0033"};var _ Filter =filterAESV3 {};
+
+// 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 };
+
+// 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 ););
 
 // KeyLength implements Filter interface.
-func (filterAESV3 )KeyLength ()int {return 256/8};
-
-// NewFilterAESV3 creates an AES-based filter with a 256 bit key (AESV3).
-func NewFilterAESV3 ()Filter {_adg ,_ge :=_ade (FilterDict {});if _ge !=nil {_ee .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",_ge );return filterAESV3 {};};return _adg ;};func (filterIdentity )PDFVersion ()[2]int {return [2]int {}};func _bda (_gff string ,_efb filterFunc ){if _ ,_bfc :=_gba [_gff ];_bfc {panic ("\u0061l\u0072e\u0061\u0064\u0079\u0020\u0072e\u0067\u0069s\u0074\u0065\u0072\u0065\u0064");};_gba [_gff ]=_efb ;};
-
-// NewFilter creates CryptFilter from a corresponding dictionary.
-func NewFilter (d FilterDict )(Filter ,error ){_cge ,_cbd :=_fgf (d .CFM );if _cbd !=nil {return nil ,_cbd ;};_gbf ,_cbd :=_cge (d );if _cbd !=nil {return nil ,_cbd ;};return _gbf ,nil ;};func (filterIdentity )EncryptBytes (p []byte ,okey []byte )([]byte ,error ){return p ,nil };func _gfg (_db ,_fff uint32 ,_gfge []byte ,_cb bool )([]byte ,error ){_bcb :=make ([]byte ,len (_gfge )+5);for _de :=0;_de < len (_gfge );_de ++{_bcb [_de ]=_gfge [_de ];};for _cf :=0;_cf < 3;_cf ++{_cda :=byte ((_db >>uint32 (8*_cf ))&0xff);_bcb [_cf +len (_gfge )]=_cda ;};for _fe :=0;_fe < 2;_fe ++{_bb :=byte ((_fff >>uint32 (8*_fe ))&0xff);_bcb [_fe +len (_gfge )+3]=_bb ;};if _cb {_bcb =append (_bcb ,0x73);_bcb =append (_bcb ,0x41);_bcb =append (_bcb ,0x6C);_bcb =append (_bcb ,0x54);};_ead :=_d .New ();_ead .Write (_bcb );_fcc :=_ead .Sum (nil );if len (_gfge )+5< 16{return _fcc [0:len (_gfge )+5],nil ;};return _fcc ,nil ;};type filterIdentity struct{};
-
-// EncryptBytes implements Filter interface.
-func (filterV2 )EncryptBytes (buf []byte ,okey []byte )([]byte ,error ){_gb ,_aaa :=_aa .NewCipher (okey );if _aaa !=nil {return nil ,_aaa ;};_ee .Log .Trace ("\u0052\u00434\u0020\u0045\u006ec\u0072\u0079\u0070\u0074\u003a\u0020\u0025\u0020\u0078",buf );_gb .XORKeyStream (buf ,buf );_ee .Log .Trace ("\u0074o\u003a\u0020\u0025\u0020\u0078",buf );return buf ,nil ;};
-
-// HandlerVersion implements Filter interface.
-func (filterAESV2 )HandlerVersion ()(V ,R int ){V ,R =4,4;return ;};
-
-// PDFVersion implements Filter interface.
-func (filterAESV3 )PDFVersion ()[2]int {return [2]int {2,0}};type filterAESV3 struct{filterAES };func _cg (_be FilterDict )(Filter ,error ){if _be .Length %8!=0{return nil ,_g .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",_be .Length );};if _be .Length < 5||_be .Length > 16{if _be .Length ==40||_be .Length ==64||_be .Length ==128{_ee .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",_be .Length );_be .Length /=8;}else {return nil ,_g .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",_be .Length );};};return filterV2 {_fec :_be .Length },nil ;};
-
-// NewFilterV2 creates a RC4-based filter with a specified key length (in bytes).
-func NewFilterV2 (length int )Filter {_bde ,_cde :=_cg (FilterDict {Length :length });if _cde !=nil {_ee .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",_cde );return filterV2 {_fec :length };};return _bde ;};
+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 ;};

fjson/fjson.go

@@ -10,28 +10,28 @@
 // terms that can be accessed at https://unidoc.io/eula/
 
 // Package fjson provides support for loading PDF form field data from JSON data/files.
-package fjson ;import (_e "encoding/json";_fe "github.com/unidoc/unipdf/v3/core";_fb "github.com/unidoc/unipdf/v3/model";_f "io";_aa "os";);type fieldValue struct{Name string `json:"name"`;Value string `json:"value"`;
+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 _f .Reader )(*FieldData ,error ){var _d FieldData ;_ea :=_e .NewDecoder (r ).Decode (&_d ._c );if _ea !=nil {return nil ,_ea ;};return &_d ,nil ;};
-
-// FieldData represents form field data loaded from JSON file.
-type FieldData struct{_c []fieldValue };
-
-// LoadFromJSONFile loads form field data from a JSON file.
-func LoadFromJSONFile (filePath string )(*FieldData ,error ){_df ,_cb :=_aa .Open (filePath );if _cb !=nil {return nil ,_cb ;};defer _df .Close ();return LoadFromJSON (_df );};
-
-// FieldValues implements model.FieldValueProvider interface.
-func (_ee *FieldData )FieldValues ()(map[string ]_fe .PdfObject ,error ){_ae :=make (map[string ]_fe .PdfObject );for _ ,_dd :=range _ee ._c {if len (_dd .Value )> 0{_ae [_dd .Name ]=_fe .MakeString (_dd .Value );};};return _ae ,nil ;};
-
-// LoadFromPDFFile loads form field data from a PDF file.
-func LoadFromPDFFile (filePath string )(*FieldData ,error ){_ag ,_acc :=_aa .Open (filePath );if _acc !=nil {return nil ,_acc ;};defer _ag .Close ();return LoadFromPDF (_ag );};
-
-// LoadFromPDF loads form field data from a PDF.
-func LoadFromPDF (rs _f .ReadSeeker )(*FieldData ,error ){_dfd ,_cf :=_fb .NewPdfReader (rs );if _cf !=nil {return nil ,_cf ;};if _dfd .AcroForm ==nil {return nil ,nil ;};var _g []fieldValue ;_b :=_dfd .AcroForm .AllFields ();for _ ,_be :=range _b {var _fd []string ;_cd :=make (map[string ]struct{});_de ,_gb :=_be .FullName ();if _gb !=nil {return nil ,_gb ;};if _cdf ,_gd :=_be .V .(*_fe .PdfObjectString );_gd {_g =append (_g ,fieldValue {Name :_de ,Value :_cdf .Decoded ()});continue ;};var _ec string ;for _ ,_cff :=range _be .Annotations {_cbf ,_gc :=_fe .GetName (_cff .AS );if _gc {_ec =_cbf .String ();};_ecb ,_ac :=_fe .GetDict (_cff .AP );if !_ac {continue ;};_cc ,_ :=_fe .GetDict (_ecb .Get ("\u004e"));for _ ,_cbg :=range _cc .Keys (){_fef :=_cbg .String ();if _ ,_ccb :=_cd [_fef ];!_ccb {_fd =append (_fd ,_fef );_cd [_fef ]=struct{}{};};};_bb ,_ :=_fe .GetDict (_ecb .Get ("\u0044"));for _ ,_fde :=range _bb .Keys (){_gdf :=_fde .String ();if _ ,_ff :=_cd [_gdf ];!_ff {_fd =append (_fd ,_gdf );_cd [_gdf ]=struct{}{};};};};_bd :=fieldValue {Name :_de ,Value :_ec ,Options :_fd };_g =append (_g ,_bd );};_aae :=FieldData {_c :_g };return &_aae ,nil ;};
+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 (_ecc FieldData )JSON ()(string ,error ){_eae ,_def :=_e .MarshalIndent (_ecc ._c ,"","\u0020\u0020\u0020\u0020");return string (_eae ),_def ;};
+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 ;};
+
+// FieldData represents form field data loaded from JSON file.
+type FieldData struct{_a []fieldValue };
+
+// 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 ;};

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 (_g "encoding/binary";_gd "unsafe";);var (ByteOrder _g .ByteOrder ;_c bool ;);func init (){const _fb =int (_gd .Sizeof (0));_df :=1;_a :=(*[_fb ]byte )(_gd .Pointer (&_df ));if _a [0]==0{_c =true ;ByteOrder =_g .BigEndian ;}else {ByteOrder =_g .LittleEndian ;};};func IsBig ()bool {return _c };func IsLittle ()bool {return !_c };
+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 };

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 _da "github.com/unidoc/unipdf/v3/internal/jbig2/errors";type Stack struct{Data []interface{};Aux *Stack ;};func (_gf IntSlice )Get (index int )(int ,error ){if index > len (_gf )-1{return 0,_da .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 _gf [index ],nil ;};func (_ac NumSlice )Get (i int )(float32 ,error ){if i < 0||i > len (_ac )-1{return 0,_da .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 _ac [i ],nil ;};func NewNumSlice (i int )*NumSlice {_ed :=NumSlice (make ([]float32 ,i ));return &_ed };func (_ee IntSlice )Size ()int {return len (_ee )};func Max (x ,y int )int {if x > y {return x ;};return y ;};func (_eeb NumSlice )GetIntSlice ()[]int {_cdd :=make ([]int ,len (_eeb ));for _gg ,_bb :=range _eeb {_cdd [_gg ]=int (_bb );};return _cdd ;};func Abs (v int )int {if v > 0{return v ;};return -v ;};func (_ad NumSlice )GetInt (i int )(int ,error ){const _fd ="\u0047\u0065\u0074\u0049\u006e\u0074";if i < 0||i > len (_ad )-1{return 0,_da .Errorf (_fd ,"\u0069n\u0064\u0065\u0078\u003a\u0020\u0027\u0025\u0064\u0027\u0020\u006fu\u0074\u0020\u006f\u0066\u0020\u0072\u0061\u006e\u0067\u0065",i );};_cb :=_ad [i ];return int (_cb +Sign (_cb )*0.5),nil ;};func (_dcb *Stack )Pop ()(_gd interface{},_gfa bool ){_gd ,_gfa =_dcb .peek ();if !_gfa {return nil ,_gfa ;};_dcb .Data =_dcb .Data [:_dcb .top ()];return _gd ,true ;};func (_cd *NumSlice )Add (v float32 ){*_cd =append (*_cd ,v )};func (_ged *Stack )Push (v interface{}){_ged .Data =append (_ged .Data ,v )};type IntsMap map[uint64 ][]int ;func (_gb IntsMap )Delete (key uint64 ){delete (_gb ,key )};func (_b *IntSlice )Copy ()*IntSlice {_dc :=IntSlice (make ([]int ,len (*_b )));copy (_dc ,*_b );return &_dc ;};func (_ab *Stack )top ()int {return len (_ab .Data )-1};func (_e IntsMap )Add (key uint64 ,value int ){_e [key ]=append (_e [key ],value )};func (_gbc *Stack )Len ()int {return len (_gbc .Data )};func Min (x ,y int )int {if x < y {return x ;};return y ;};func Ceil (numerator ,denominator int )int {if numerator %denominator ==0{return numerator /denominator ;};return (numerator /denominator )+1;};func (_bd *Stack )peek ()(interface{},bool ){_cbg :=_bd .top ();if _cbg ==-1{return nil ,false ;};return _bd .Data [_cbg ],true ;};func Sign (v float32 )float32 {if v >=0.0{return 1.0;};return -1.0;};func (_fc IntsMap )GetSlice (key uint64 )([]int ,bool ){_a ,_dad :=_fc [key ];if !_dad {return nil ,false ;};return _a ,true ;};type IntSlice []int ;func NewIntSlice (i int )*IntSlice {_dg :=IntSlice (make ([]int ,i ));return &_dg };func (_ff *IntSlice )Add (v int )error {if _ff ==nil {return _da .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");};*_ff =append (*_ff ,v );return nil ;};func (_fdd *Stack )Peek ()(_be interface{},_eee bool ){return _fdd .peek ()};func (_f IntsMap )Get (key uint64 )(int ,bool ){_g ,_c :=_f [key ];if !_c {return 0,false ;};if len (_g )==0{return 0,false ;};return _g [0],true ;};func (_ge *NumSlice )AddInt (v int ){*_ge =append (*_ge ,float32 (v ))};type NumSlice []float32 ;
+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 ;};

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 (_c "github.com/unidoc/unipdf/v3/internal/bitwise";_e "github.com/unidoc/unipdf/v3/internal/jbig2/bitmap";_b "github.com/unidoc/unipdf/v3/internal/jbig2/document";_f "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_a "image";);func (_bf *Decoder )DecodePageImage (pageNumber int )(_a .Image ,error ){const _fa ="\u0064\u0065\u0063od\u0065\u0072\u002e\u0044\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";_bg ,_gb :=_bf .decodePageImage (pageNumber );if _gb !=nil {return nil ,_f .Wrap (_gb ,_fa ,"");};return _bg ,nil ;};func (_ga *Decoder )DecodePage (pageNumber int )([]byte ,error ){return _ga .decodePage (pageNumber )};type Parameters struct{UnpaddedData bool ;Color _e .Color ;};type Decoder struct{_d _c .StreamReader ;_fg *_b .Document ;_ae int ;_eb Parameters ;};func (_ac *Decoder )PageNumber ()(int ,error ){const _af ="\u0044e\u0063o\u0064\u0065\u0072\u002e\u0050a\u0067\u0065N\u0075\u006d\u0062\u0065\u0072";if _ac ._fg ==nil {return 0,_f .Error (_af ,"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 (_ac ._fg .NumberOfPages ),nil ;};func (_aff *Decoder )decodePage (_ad int )([]byte ,error ){const _be ="\u0064\u0065\u0063\u006f\u0064\u0065\u0050\u0061\u0067\u0065";if _ad < 0{return nil ,_f .Errorf (_be ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_ad );};if _ad > int (_aff ._fg .NumberOfPages ){return nil ,_f .Errorf (_be ,"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",_ad );};_fd ,_adb :=_aff ._fg .GetPage (_ad );if _adb !=nil {return nil ,_f .Wrap (_adb ,_be ,"");};_gd ,_adb :=_fd .GetBitmap ();if _adb !=nil {return nil ,_f .Wrap (_adb ,_be ,"");};_gd .InverseData ();if !_aff ._eb .UnpaddedData {return _gd .Data ,nil ;};return _gd .GetUnpaddedData ();};func (_fb *Decoder )DecodeNextPage ()([]byte ,error ){_fb ._ae ++;_gg :=_fb ._ae ;return _fb .decodePage (_gg );};func (_ca *Decoder )decodePageImage (_bc int )(_a .Image ,error ){const _da ="\u0064e\u0063o\u0064\u0065\u0050\u0061\u0067\u0065\u0049\u006d\u0061\u0067\u0065";if _bc < 0{return nil ,_f .Errorf (_da ,"\u0069n\u0076\u0061\u006c\u0069d\u0020\u0070\u0061\u0067\u0065 \u006eu\u006db\u0065\u0072\u003a\u0020\u0027\u0025\u0064'",_bc );};if _bc > int (_ca ._fg .NumberOfPages ){return nil ,_f .Errorf (_da ,"p\u0061\u0067\u0065\u003a\u0020\u0027%\u0064\u0027\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0069n\u0020\u0074\u0068\u0065\u0020\u0064\u0065\u0063\u006f\u0064e\u0072",_bc );};_fe ,_dg :=_ca ._fg .GetPage (_bc );if _dg !=nil {return nil ,_f .Wrap (_dg ,_da ,"");};_fgf ,_dg :=_fe .GetBitmap ();if _dg !=nil {return nil ,_f .Wrap (_dg ,_da ,"");};return _fgf .ToImage (),nil ;};func Decode (input []byte ,parameters Parameters ,globals *_b .Globals )(*Decoder ,error ){_ada :=_c .NewReader (input );_fad ,_gc :=_b .DecodeDocument (_ada ,globals );if _gc !=nil {return nil ,_gc ;};return &Decoder {_d :_ada ,_fg :_fad ,_eb :parameters },nil ;};
+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 ;};

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 _g "fmt";func Wrapf (err error ,processName ,message string ,arguments ...interface{})error {if _fb ,_ba :=err .(*processError );_ba {_fb ._d ="";};_fbg :=_dd (_g .Sprintf (message ,arguments ...),processName );_fbg ._a =err ;return _fbg ;};func Wrap (err error ,processName ,message string )error {if _dg ,_ee :=err .(*processError );_ee {_dg ._d ="";};_ec :=_dd (message ,processName );_ec ._a =err ;return _ec ;};type processError struct{_d string ;_e string ;_f string ;_a error ;};func Error (processName ,message string )error {return _dd (message ,processName )};func (_da *processError )Error ()string {var _c string ;if _da ._d !=""{_c =_da ._d ;};_c +="\u0050r\u006f\u0063\u0065\u0073\u0073\u003a "+_da ._e ;if _da ._f !=""{_c +="\u0020\u004d\u0065\u0073\u0073\u0061\u0067\u0065\u003a\u0020"+_da ._f ;};if _da ._a !=nil {_c +="\u002e\u0020"+_da ._a .Error ();};return _c ;};func Errorf (processName ,message string ,arguments ...interface{})error {return _dd (_g .Sprintf (message ,arguments ...),processName );};func _dd (_df ,_bf string )*processError {return &processError {_d :"\u005b\u0055\u006e\u0069\u0050\u0044\u0046\u005d",_f :_df ,_e :_bf };};
+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 ;};

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";_d "github.com/unidoc/unipdf/v3/internal/jbig2/decoder";_df "github.com/unidoc/unipdf/v3/internal/jbig2/document";_c "github.com/unidoc/unipdf/v3/internal/jbig2/document/segments";_da "github.com/unidoc/unipdf/v3/internal/jbig2/errors";_b "sort";);type Globals map[int ]*_c .Header ;func DecodeBytes (encoded []byte ,parameters _d .Parameters ,globals ...Globals )([]byte ,error ){var _bd Globals ;if len (globals )> 0{_bd =globals [0];};_e ,_gd :=_d .Decode (encoded ,parameters ,_bd .ToDocumentGlobals ());if _gd !=nil {return nil ,_gd ;};return _e .DecodeNextPage ();};func DecodeGlobals (encoded []byte )(Globals ,error ){const _dc ="\u0044\u0065\u0063\u006f\u0064\u0065\u0047\u006c\u006f\u0062\u0061\u006c\u0073";_a :=_g .NewReader (encoded );_bdd ,_ed :=_df .DecodeDocument (_a ,nil );if _ed !=nil {return nil ,_da .Wrap (_ed ,_dc ,"");};if _bdd .GlobalSegments ==nil ||(_bdd .GlobalSegments .Segments ==nil ){return nil ,_da .Error (_dc ,"\u006eo\u0020\u0067\u006c\u006f\u0062\u0061\u006c\u0020\u0073\u0065\u0067m\u0065\u006e\u0074\u0073\u0020\u0066\u006f\u0075\u006e\u0064");};_ec :=Globals {};for _ ,_de :=range _bdd .GlobalSegments .Segments {_ec [int (_de .SegmentNumber )]=_de ;};return _ec ,nil ;};func (_af Globals )ToDocumentGlobals ()*_df .Globals {if _af ==nil {return nil ;};_eb :=[]*_c .Header {};for _ ,_ee :=range _af {_eb =append (_eb ,_ee );};_b .Slice (_eb ,func (_ae ,_bg int )bool {return _eb [_ae ].SegmentNumber < _eb [_bg ].SegmentNumber });return &_df .Globals {Segments :_eb };};
+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 ;

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 (_a "github.com/unidoc/unipdf/v3/internal/bitwise";_dc "github.com/unidoc/unipdf/v3/internal/imageutil";_f "io";);func ResampleUint32 (data []uint32 ,bitsPerInputSample int ,bitsPerOutputSample int )[]uint32 {var _bb []uint32 ;_ab :=bitsPerOutputSample ;var _gg uint32 ;var _df uint32 ;_fad :=0;_dbb :=0;_gc :=0;for _gc < len (data ){if _fad > 0{_dba :=_fad ;if _ab < _dba {_dba =_ab ;};_gg =(_gg <<uint (_dba ))|uint32 (_df >>uint (bitsPerInputSample -_dba ));_fad -=_dba ;if _fad > 0{_df =_df <<uint (_dba );}else {_df =0;};_ab -=_dba ;if _ab ==0{_bb =append (_bb ,_gg );_ab =bitsPerOutputSample ;_gg =0;_dbb ++;};}else {_bg :=data [_gc ];_gc ++;_fec :=bitsPerInputSample ;if _ab < _fec {_fec =_ab ;};_fad =bitsPerInputSample -_fec ;_gg =(_gg <<uint (_fec ))|uint32 (_bg >>uint (_fad ));if _fec < bitsPerInputSample {_df =_bg <<uint (_fec );};_ab -=_fec ;if _ab ==0{_bb =append (_bb ,_gg );_ab =bitsPerOutputSample ;_gg =0;_dbb ++;};};};for _fad >=bitsPerOutputSample {_ace :=_fad ;if _ab < _ace {_ace =_ab ;};_gg =(_gg <<uint (_ace ))|uint32 (_df >>uint (bitsPerInputSample -_ace ));_fad -=_ace ;if _fad > 0{_df =_df <<uint (_ace );}else {_df =0;};_ab -=_ace ;if _ab ==0{_bb =append (_bb ,_gg );_ab =bitsPerOutputSample ;_gg =0;_dbb ++;};};if _ab > 0&&_ab < bitsPerOutputSample {_gg <<=uint (_ab );_bb =append (_bb ,_gg );};return _bb ;};func (_bd *Writer )WriteSample (sample uint32 )error {if _ ,_bac :=_bd ._ca .WriteBits (uint64 (sample ),_bd ._gf .BitsPerComponent );_bac !=nil {return _bac ;};_bd ._bbg --;if _bd ._bbg ==0{_bd ._bbg =_bd ._gf .ColorComponents ;_bd ._ff ++;};if _bd ._ff ==_bd ._gf .Width {if _bd ._ef {_bd ._ca .FinishByte ();};_bd ._ff =0;};return nil ;};func NewReader (img _dc .ImageBase )*Reader {return &Reader {_fb :_a .NewReader (img .Data ),_c :img ,_fe :img .ColorComponents ,_cg :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};func (_da *Writer )WriteSamples (samples []uint32 )error {for _bf :=0;_bf < len (samples );_bf ++{if _cf :=_da .WriteSample (samples [_bf ]);_cf !=nil {return _cf ;};};return nil ;};func ResampleBytes (data []byte ,bitsPerSample int )[]uint32 {var _ee []uint32 ;_eea :=bitsPerSample ;var _g uint32 ;var _ba byte ;_fa :=0;_ec :=0;_afb :=0;for _afb < len (data ){if _fa > 0{_fc :=_fa ;if _eea < _fc {_fc =_eea ;};_g =(_g <<uint (_fc ))|uint32 (_ba >>uint (8-_fc ));_fa -=_fc ;if _fa > 0{_ba =_ba <<uint (_fc );}else {_ba =0;};_eea -=_fc ;if _eea ==0{_ee =append (_ee ,_g );_eea =bitsPerSample ;_g =0;_ec ++;};}else {_fg :=data [_afb ];_afb ++;_bc :=8;if _eea < _bc {_bc =_eea ;};_fa =8-_bc ;_g =(_g <<uint (_bc ))|uint32 (_fg >>uint (_fa ));if _bc < 8{_ba =_fg <<uint (_bc );};_eea -=_bc ;if _eea ==0{_ee =append (_ee ,_g );_eea =bitsPerSample ;_g =0;_ec ++;};};};for _fa >=bitsPerSample {_aff :=_fa ;if _eea < _aff {_aff =_eea ;};_g =(_g <<uint (_aff ))|uint32 (_ba >>uint (8-_aff ));_fa -=_aff ;if _fa > 0{_ba =_ba <<uint (_aff );}else {_ba =0;};_eea -=_aff ;if _eea ==0{_ee =append (_ee ,_g );_eea =bitsPerSample ;_g =0;_ec ++;};};return _ee ;};type SampleWriter interface{WriteSample (_afbf uint32 )error ;WriteSamples (_afc []uint32 )error ;};type Reader struct{_c _dc .ImageBase ;_fb *_a .Reader ;_ac ,_cc ,_fe int ;_cg bool ;};func NewWriter (img _dc .ImageBase )*Writer {return &Writer {_ca :_a .NewWriterMSB (img .Data ),_gf :img ,_bbg :img .ColorComponents ,_ef :img .BytesPerLine *8!=img .ColorComponents *img .BitsPerComponent *img .Width };};type SampleReader interface{ReadSample ()(uint32 ,error );ReadSamples (_e []uint32 )error ;};type Writer struct{_gf _dc .ImageBase ;_ca *_a .Writer ;_ff ,_bbg int ;_ef bool ;};func (_b *Reader )ReadSample ()(uint32 ,error ){if _b ._cc ==_b ._c .Height {return 0,_f .EOF ;};_db ,_af :=_b ._fb .ReadBits (byte (_b ._c .BitsPerComponent ));if _af !=nil {return 0,_af ;};_b ._fe --;if _b ._fe ==0{_b ._fe =_b ._c .ColorComponents ;_b ._ac ++;};if _b ._ac ==_b ._c .Width {if _b ._cg {_b ._fb .ConsumeRemainingBits ();};_b ._ac =0;_b ._cc ++;};return uint32 (_db ),nil ;};func (_dg *Reader )ReadSamples (samples []uint32 )(_eg error ){for _de :=0;_de < len (samples );_de ++{samples [_de ],_eg =_dg .ReadSample ();if _eg !=nil {return _eg ;};};return nil ;};
+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 ;};

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 (_cb "fmt";_a "github.com/unidoc/unipdf/v3/common";_g "math";);func (_gc *Matrix )Shear (x ,y float64 ){_gc .Concat (ShearMatrix (x ,y ))};func (_ad *Matrix )Scale (x ,y float64 ){_ad .Concat (ScaleMatrix (x ,y ))};func (_cc Point )Displace (delta Point )Point {return Point {_cc .X +delta .X ,_cc .Y +delta .Y }};func (_eafg *Point )Set (x ,y float64 ){_eafg .X ,_eafg .Y =x ,y };func (_db *Point )transformByMatrix (_fff Matrix ){_db .X ,_db .Y =_fff .Transform (_db .X ,_db .Y )};func (_bg Point )String ()string {return _cb .Sprintf ("(\u0025\u002e\u0032\u0066\u002c\u0025\u002e\u0032\u0066\u0029",_bg .X ,_bg .Y );};type Point struct{X float64 ;Y float64 ;};func (_ge *Matrix )Translation ()(float64 ,float64 ){return _ge [6],_ge [7]};func (_ac *Matrix )Concat (b Matrix ){*_ac =Matrix {b [0]*_ac [0]+b [1]*_ac [3],b [0]*_ac [1]+b [1]*_ac [4],0,b [3]*_ac [0]+b [4]*_ac [3],b [3]*_ac [1]+b [4]*_ac [4],0,b [6]*_ac [0]+b [7]*_ac [3]+_ac [6],b [6]*_ac [1]+b [7]*_ac [4]+_ac [7],1};_ac .clampRange ();};func (_geg *Matrix )ScalingFactorX ()float64 {return _g .Hypot (_geg [0],_geg [1])};func NewPoint (x ,y float64 )Point {return Point {X :x ,Y :y }};func (_ca *Matrix )Translate (x ,y float64 ){_ca .Concat (TranslationMatrix (x ,y ))};func (_df *Matrix )clampRange (){for _dd ,_caf :=range _df {if _caf > _ce {_a .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_caf ,_ce );_df [_dd ]=_ce ;}else if _caf < -_ce {_a .Log .Debug ("\u0043L\u0041M\u0050\u003a\u0020\u0025\u0067\u0020\u002d\u003e\u0020\u0025\u0067",_caf ,-_ce );_df [_dd ]=-_ce ;};};};func (_fb *Matrix )Angle ()float64 {_eaf :=_g .Atan2 (-_fb [1],_fb [0]);if _eaf < 0.0{_eaf +=2*_g .Pi ;};return _eaf /_g .Pi *180.0;};func (_fe *Matrix )Transform (x ,y float64 )(float64 ,float64 ){_ab :=x *_fe [0]+y *_fe [1]+_fe [6];_adb :=x *_fe [3]+y *_fe [4]+_fe [7];return _ab ,_adb ;};func TranslationMatrix (tx ,ty float64 )Matrix {return NewMatrix (1,0,0,1,tx ,ty )};const _ggf =1.0e-6;func (_be *Matrix )Clone ()Matrix {return NewMatrix (_be [0],_be [1],_be [3],_be [4],_be [6],_be [7])};type Matrix [9]float64 ;func (_gcd Point )Interpolate (b Point ,t float64 )Point {return Point {X :(1-t )*_gcd .X +t *b .X ,Y :(1-t )*_gcd .Y +t *b .Y };};func (_ff *Matrix )Set (a ,b ,c ,d ,tx ,ty float64 ){_ff [0],_ff [1]=a ,b ;_ff [3],_ff [4]=c ,d ;_ff [6],_ff [7]=tx ,ty ;_ff .clampRange ();};func NewMatrix (a ,b ,c ,d ,tx ,ty float64 )Matrix {_cg :=Matrix {a ,b ,0,c ,d ,0,tx ,ty ,1};_cg .clampRange ();return _cg ;};func (_ga *Point )Transform (a ,b ,c ,d ,tx ,ty float64 ){_gbd :=NewMatrix (a ,b ,c ,d ,tx ,ty );_ga .transformByMatrix (_gbd );};const _ce =1e9;func (_af Point )Distance (b Point )float64 {return _g .Hypot (_af .X -b .X ,_af .Y -b .Y )};func (_ced Point )Rotate (theta float64 )Point {_fa :=_g .Hypot (_ced .X ,_ced .Y );_ba :=_g .Atan2 (_ced .Y ,_ced .X );_dae ,_dad :=_g .Sincos (_ba +theta /180.0*_g .Pi );return Point {_fa *_dad ,_fa *_dae };};func (_d Matrix )String ()string {_ea ,_cgd ,_f ,_fd ,_fg ,_ee :=_d [0],_d [1],_d [3],_d [4],_d [6],_d [7];return _cb .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",_ea ,_cgd ,_f ,_fd ,_fg ,_ee );};func IdentityMatrix ()Matrix {return NewMatrix (1,0,0,1,0,0)};const _cba =1e-6;func (_b *Matrix )Rotate (angle float64 ){_b .Concat (RotationMatrix (angle ))};func ScaleMatrix (x ,y float64 )Matrix {return NewMatrix (x ,0,0,y ,0,0)};func (_dfb *Matrix )Unrealistic ()bool {_da ,_gg ,_fga ,_bd :=_g .Abs (_dfb [0]),_g .Abs (_dfb [1]),_g .Abs (_dfb [3]),_g .Abs (_dfb [4]);_ddc :=_da > _cba &&_bd > _cba ;_ed :=_gg > _cba &&_fga > _cba ;return !(_ddc ||_ed );};func RotationMatrix (angle float64 )Matrix {_e :=_g .Cos (angle );_ae :=_g .Sin (angle );return NewMatrix (_e ,_ae ,-_ae ,_e ,0,0);};func (_gb *Matrix )ScalingFactorY ()float64 {return _g .Hypot (_gb [3],_gb [4])};func (_dg Matrix )Mult (b Matrix )Matrix {_dg .Concat (b );return _dg };func ShearMatrix (x ,y float64 )Matrix {return NewMatrix (1,y ,x ,1,0,0)};
+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 }};

model/sighandler/sighandler.go

@@ -10,75 +10,75 @@
 // terms that can be accessed at https://unidoc.io/eula/
 
 // Package sighandler implements digital signature handlers for PDF signature validation and signing.
-package sighandler ;import (_f "bytes";_e "crypto";_aab "crypto/rand";_dd "crypto/rsa";_cc "crypto/x509";_g "crypto/x509/pkix";_aa "encoding/asn1";_cf "errors";_eg "fmt";_cfb "github.com/unidoc/pkcs7";_dc "github.com/unidoc/timestamp";_dcb "github.com/unidoc/unipdf/v3/core";_b "github.com/unidoc/unipdf/v3/model";_ca "hash";_c "io";_fg "io/ioutil";_ae "net/http";_a "time";);
-
-// InitSignature initialises the PdfSignature.
-func (_bf *adobePKCS7Detached )InitSignature (sig *_b .PdfSignature )error {if !_bf ._ba {if _bf ._bd ==nil {return _cf .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 _bf ._ge ==nil {return _cf .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");};};_de :=*_bf ;sig .Handler =&_de ;sig .Filter =_dcb .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_dcb .MakeName ("\u0061\u0064\u0062\u0065.p\u006b\u0063\u0073\u0037\u002e\u0064\u0065\u0074\u0061\u0063\u0068\u0065\u0064");sig .Reference =nil ;_eb ,_egb :=_de .NewDigest (sig );if _egb !=nil {return _egb ;};_eb .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 _de .Sign (sig ,_eb );};func (_baf *adobePKCS7Detached )getCertificate (_aeb *_b .PdfSignature )(*_cc .Certificate ,error ){if _baf ._bd !=nil {return _baf ._bd ,nil ;};var _cb []byte ;switch _fe :=_aeb .Cert .(type ){case *_dcb .PdfObjectString :_cb =_fe .Bytes ();case *_dcb .PdfObjectArray :if _fe .Len ()==0{return nil ,_cf .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 _ ,_da :=range _fe .Elements (){_af ,_cfbc :=_dcb .GetString (_da );if !_cfbc {return nil ,_eg .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",_da );};_cb =append (_cb ,_af .Bytes ()...);};default:return nil ,_eg .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",_fe );};_bad ,_dce :=_cc .ParseCertificates (_cb );if _dce !=nil {return nil ,_dce ;};return _bad [0],nil ;};type docTimeStamp struct{_ecc string ;_bbc _e .Hash ;};
-
-// NewDigest creates a new digest.
-func (_bdc *adobePKCS7Detached )NewDigest (sig *_b .PdfSignature )(_b .Hasher ,error ){return _f .NewBuffer (nil ),nil ;};type timestampInfo struct{Version int ;Policy _aa .RawValue ;MessageImprint struct{HashAlgorithm _g .AlgorithmIdentifier ;HashedMessage []byte ;};SerialNumber _aa .RawValue ;GeneralizedTime _a .Time ;};type adobePKCS7Detached struct{_ge *_dd .PrivateKey ;_bd *_cc .Certificate ;_ba bool ;_ad int ;};
-
-// Validate validates PdfSignature.
-func (_ff *adobeX509RSASHA1 )Validate (sig *_b .PdfSignature ,digest _b .Hasher )(_b .SignatureValidationResult ,error ){_gc ,_dee :=_ff .getCertificate (sig );if _dee !=nil {return _b .SignatureValidationResult {},_dee ;};_bdd :=sig .Contents .Bytes ();var _cce []byte ;if _ ,_cceb :=_aa .Unmarshal (_bdd ,&_cce );_cceb !=nil {return _b .SignatureValidationResult {},_cceb ;};_fega ,_gd :=digest .(_ca .Hash );if !_gd {return _b .SignatureValidationResult {},_cf .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_bec ,_ :=_fede (_gc .SignatureAlgorithm );if _cbc :=_dd .VerifyPKCS1v15 (_gc .PublicKey .(*_dd .PublicKey ),_bec ,_fega .Sum (nil ),_cce );_cbc !=nil {return _b .SignatureValidationResult {},_cbc ;};return _b .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
-
-// NewDigest creates a new digest.
-func (_efc *docTimeStamp )NewDigest (sig *_b .PdfSignature )(_b .Hasher ,error ){return _f .NewBuffer (nil ),nil ;};
-
-// NewDigest creates a new digest.
-func (_dag *adobeX509RSASHA1 )NewDigest (sig *_b .PdfSignature )(_b .Hasher ,error ){_gec ,_dbd :=_dag .getCertificate (sig );if _dbd !=nil {return nil ,_dbd ;};_ecf ,_ :=_fede (_gec .SignatureAlgorithm );return _ecf .New (),nil ;};
-
-// Sign sets the Contents fields for the PdfSignature.
-func (_cfe *docTimeStamp )Sign (sig *_b .PdfSignature ,digest _b .Hasher )error {_ddc :=digest .(*_f .Buffer );_ceef :=_cfe ._bbc .New ();if _ ,_ecb :=_c .Copy (_ceef ,_ddc );_ecb !=nil {return _ecb ;};_bc :=_ceef .Sum (nil );_edd :=_dc .Request {HashAlgorithm :_cfe ._bbc ,HashedMessage :_bc ,Certificates :true ,Extensions :nil ,ExtraExtensions :nil };_ea ,_dcf :=_edd .Marshal ();if _dcf !=nil {return _dcf ;};_ac ,_dcf :=_ae .Post (_cfe ._ecc ,"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 (_ea ));if _dcf !=nil {return _dcf ;};defer _ac .Body .Close ();_gfe ,_dcf :=_fg .ReadAll (_ac .Body );if _dcf !=nil {return _dcf ;};if _ac .StatusCode !=_ae .StatusOK {return _eg .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",_ac .StatusCode );};var _adf struct{Version _aa .RawValue ;Content _aa .RawValue ;};_ ,_dcf =_aa .Unmarshal (_gfe ,&_adf );if _dcf !=nil {return _dcf ;};sig .Contents =_dcb .MakeHexString (string (_adf .Content .FullBytes ));return nil ;};
-
-// SignFunc represents a custom signing function. The function should return
-// the computed signature.
-type SignFunc func (_ebc *_b .PdfSignature ,_gb _b .Hasher )([]byte ,error );
-
-// Validate validates PdfSignature.
-func (_fgaa *docTimeStamp )Validate (sig *_b .PdfSignature ,digest _b .Hasher )(_b .SignatureValidationResult ,error ){_cfbb :=sig .Contents .Bytes ();_gee ,_abf :=_cfb .Parse (_cfbb );if _abf !=nil {return _b .SignatureValidationResult {},_abf ;};if _abf =_gee .Verify ();_abf !=nil {return _b .SignatureValidationResult {},_abf ;};var _gafg timestampInfo ;_ ,_abf =_aa .Unmarshal (_gee .Content ,&_gafg );if _abf !=nil {return _b .SignatureValidationResult {},_abf ;};_bfb ,_abf :=_gagc (_gafg .MessageImprint .HashAlgorithm .Algorithm );if _abf !=nil {return _b .SignatureValidationResult {},_abf ;};_bbd :=_bfb .New ();_beg :=digest .(*_f .Buffer );_bbd .Write (_beg .Bytes ());_cee :=_bbd .Sum (nil );_cac :=_b .SignatureValidationResult {IsSigned :true ,IsVerified :_f .Equal (_cee ,_gafg .MessageImprint .HashedMessage ),GeneralizedTime :_gafg .GeneralizedTime };return _cac ,nil ;};func _fede (_feg _cc .SignatureAlgorithm )(_e .Hash ,bool ){return _e .SHA1 ,true };
-
-// Sign sets the Contents fields for the PdfSignature.
-func (_ebd *adobeX509RSASHA1 )Sign (sig *_b .PdfSignature ,digest _b .Hasher )error {var _cef []byte ;var _baa error ;if _ebd ._gac !=nil {_cef ,_baa =_ebd ._gac (sig ,digest );if _baa !=nil {return _baa ;};}else {_ceb ,_caa :=digest .(_ca .Hash );if !_caa {return _cf .New ("\u0068a\u0073h\u0020\u0074\u0079\u0070\u0065\u0020\u0065\u0072\u0072\u006f\u0072");};_afd ,_ :=_fede (_ebd ._gag .SignatureAlgorithm );_cef ,_baa =_dd .SignPKCS1v15 (_aab .Reader ,_ebd ._ab ,_afd ,_ceb .Sum (nil ));if _baa !=nil {return _baa ;};};_cef ,_baa =_aa .Marshal (_cef );if _baa !=nil {return _baa ;};sig .Contents =_dcb .MakeHexString (string (_cef ));return nil ;};func (_fd *docTimeStamp )getCertificate (_fec *_b .PdfSignature )(*_cc .Certificate ,error ){var _gf []byte ;switch _bdcf :=_fec .Cert .(type ){case *_dcb .PdfObjectString :_gf =_bdcf .Bytes ();case *_dcb .PdfObjectArray :if _bdcf .Len ()==0{return nil ,_cf .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 _ ,_geg :=range _bdcf .Elements (){_ebgd ,_dg :=_dcb .GetString (_geg );if !_dg {return nil ,_eg .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",_geg );};_gf =append (_gf ,_ebgd .Bytes ()...);};default:return nil ,_eg .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",_bdcf );};_cg ,_cfa :=_cc .ParseCertificates (_gf );if _cfa !=nil {return nil ,_cfa ;};return _cg [0],nil ;};
-
-// Sign sets the Contents fields.
-func (_fa *adobePKCS7Detached )Sign (sig *_b .PdfSignature ,digest _b .Hasher )error {if _fa ._ba {_fed :=_fa ._ad ;if _fed <=0{_fed =8192;};sig .Contents =_dcb .MakeHexString (string (make ([]byte ,_fed )));return nil ;};_ga :=digest .(*_f .Buffer );_adg ,_ebg :=_cfb .NewSignedData (_ga .Bytes ());if _ebg !=nil {return _ebg ;};if _gae :=_adg .AddSigner (_fa ._bd ,_fa ._ge ,_cfb .SignerInfoConfig {});_gae !=nil {return _gae ;};_adg .Detach ();_ed ,_ebg :=_adg .Finish ();if _ebg !=nil {return _ebg ;};_cec :=make ([]byte ,8192);copy (_cec ,_ed );sig .Contents =_dcb .MakeHexString (string (_cec ));return 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 *_cc .Certificate ,signFunc SignFunc )(_b .SignatureHandler ,error ){return &adobeX509RSASHA1 {_gag :certificate ,_gac :signFunc },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 )(_b .SignatureHandler ,error ){return &adobePKCS7Detached {_ba :true ,_ad :signatureLen },nil ;};
-
-// Validate validates PdfSignature.
-func (_ce *adobePKCS7Detached )Validate (sig *_b .PdfSignature ,digest _b .Hasher )(_b .SignatureValidationResult ,error ){_df :=sig .Contents .Bytes ();_ef ,_bfc :=_cfb .Parse (_df );if _bfc !=nil {return _b .SignatureValidationResult {},_bfc ;};_afg :=digest .(*_f .Buffer );_ef .Content =_afg .Bytes ();if _bfc =_ef .Verify ();_bfc !=nil {return _b .SignatureValidationResult {},_bfc ;};return _b .SignatureValidationResult {IsSigned :true ,IsVerified :true },nil ;};
-
-// IsApplicable returns true if the signature handler is applicable for the PdfSignature
-func (_dcc *adobePKCS7Detached )IsApplicable (sig *_b .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";};
-
-// 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 *_dd .PrivateKey ,certificate *_cc .Certificate )(_b .SignatureHandler ,error ){return &adobePKCS7Detached {_bd :certificate ,_ge :privateKey },nil ;};
+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 *_dd .PrivateKey ,certificate *_cc .Certificate )(_b .SignatureHandler ,error ){return &adobeX509RSASHA1 {_gag :certificate ,_ab :privateKey },nil ;};func _gagc (_fc _aa .ObjectIdentifier )(_e .Hash ,error ){switch {case _fc .Equal (_cfb .OIDDigestAlgorithmSHA1 ),_fc .Equal (_cfb .OIDDigestAlgorithmECDSASHA1 ),_fc .Equal (_cfb .OIDDigestAlgorithmDSA ),_fc .Equal (_cfb .OIDDigestAlgorithmDSASHA1 ),_fc .Equal (_cfb .OIDEncryptionAlgorithmRSA ):return _e .SHA1 ,nil ;case _fc .Equal (_cfb .OIDDigestAlgorithmSHA256 ),_fc .Equal (_cfb .OIDDigestAlgorithmECDSASHA256 ):return _e .SHA256 ,nil ;case _fc .Equal (_cfb .OIDDigestAlgorithmSHA384 ),_fc .Equal (_cfb .OIDDigestAlgorithmECDSASHA384 ):return _e .SHA384 ,nil ;case _fc .Equal (_cfb .OIDDigestAlgorithmSHA512 ),_fc .Equal (_cfb .OIDDigestAlgorithmECDSASHA512 ):return _e .SHA512 ,nil ;};return _e .Hash (0),_cfb .ErrUnsupportedAlgorithm ;};
+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 _e .Hash )(_b .SignatureHandler ,error ){return &docTimeStamp {_ecc :timestampServerURL ,_bbc :hashAlgorithm },nil ;};
+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 (_eef *adobeX509RSASHA1 )IsApplicable (sig *_b .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";};func (_ec *adobeX509RSASHA1 )getCertificate (_cfg *_b .PdfSignature )(*_cc .Certificate ,error ){if _ec ._gag !=nil {return _ec ._gag ,nil ;};var _gaf []byte ;switch _fgg :=_cfg .Cert .(type ){case *_dcb .PdfObjectString :_gaf =_fgg .Bytes ();case *_dcb .PdfObjectArray :if _fgg .Len ()==0{return nil ,_cf .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 _ ,_db :=range _fgg .Elements (){_gbe ,_gagg :=_dcb .GetString (_db );if !_gagg {return nil ,_eg .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",_db );};_gaf =append (_gaf ,_gbe .Bytes ()...);};default:return nil ,_eg .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",_fgg );};_ee ,_bg :=_cc .ParseCertificates (_gaf );if _bg !=nil {return nil ,_bg ;};return _ee [0],nil ;};type adobeX509RSASHA1 struct{_ab *_dd .PrivateKey ;_gag *_cc .Certificate ;_gac SignFunc ;};
+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 ;};
+
+// 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 );};
+
+// 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 (_fef *docTimeStamp )IsApplicable (sig *_b .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";};
+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";};
+
+// 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 ;};
+
+// 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 ;};
+
+// 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 ;};
+
+// NewDigest creates a new digest.
+func (_baa *adobePKCS7Detached )NewDigest (sig *_ec .PdfSignature )(_ec .Hasher ,error ){return _b .NewBuffer (nil ),nil ;};
 
 // InitSignature initialises the PdfSignature.
-func (_cecd *adobeX509RSASHA1 )InitSignature (sig *_b .PdfSignature )error {if _cecd ._gag ==nil {return _cf .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 _cecd ._ab ==nil &&_cecd ._gac ==nil {return _cf .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");};_bb :=*_cecd ;sig .Handler =&_bb ;sig .Filter =_dcb .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_dcb .MakeName ("\u0061d\u0062e\u002e\u0078\u0035\u0030\u0039.\u0072\u0073a\u005f\u0073\u0068\u0061\u0031");sig .Cert =_dcb .MakeString (string (_bb ._gag .Raw ));sig .Reference =nil ;_ced ,_aaa :=_bb .NewDigest (sig );if _aaa !=nil {return _aaa ;};_ced .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 _bb .Sign (sig ,_ced );};
+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 );};
+
+// 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 ;};
+
+// 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 ;};
 
 // InitSignature initialises the PdfSignature.
-func (_abe *docTimeStamp )InitSignature (sig *_b .PdfSignature )error {_fb :=*_abe ;sig .Handler =&_fb ;sig .Filter =_dcb .MakeName ("\u0041\u0064\u006f\u0062\u0065\u002e\u0050\u0050\u004b\u004c\u0069\u0074\u0065");sig .SubFilter =_dcb .MakeName ("\u0045\u0054\u0053I\u002e\u0052\u0046\u0043\u0033\u0031\u0036\u0031");sig .Reference =nil ;_dae ,_afe :=_abe .NewDigest (sig );if _afe !=nil {return _afe ;};_dae .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 _fb .Sign (sig ,_dae );};
+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 );};

pdfutil/pdfutil.go

@@ -0,0 +1,19 @@
+//
+// Copyright 2020 FoxyUtils ehf. All rights reserved.
+//
+// This is a commercial product and requires a license to operate.
+// A trial license can be obtained at https://unidoc.io
+//
+// DO NOT EDIT: generated by unitwist Go source code obfuscator.
+//
+// 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";);
+
+// 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.
+// 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 ;};

ps/ps.go

@@ -14,36 +14,35 @@
 //
 // Package ps implements various functionalities needed for handling Postscript for PDF uses, in particular
 // for PDF function type 4.
-package ps ;import (_fe "bufio";_d "bytes";_e "errors";_fg "fmt";_b "github.com/unidoc/unipdf/v3/common";_feb "github.com/unidoc/unipdf/v3/core";_ea "io";_eg "math";);func (_ffac *PSOperand )sin (_ddb *PSStack )error {_afgc ,_geea :=_ddb .PopNumberAsFloat64 ();if _geea !=nil {return _geea ;};_eafa :=_eg .Sin (_afgc *_eg .Pi /180.0);_geea =_ddb .Push (MakeReal (_eafa ));return _geea ;};func (_dbe *PSOperand )copy (_cddb *PSStack )error {_deg ,_gab :=_cddb .PopInteger ();if _gab !=nil {return _gab ;};if _deg < 0{return ErrRangeCheck ;};if _deg > len (*_cddb ){return ErrRangeCheck ;};*_cddb =append (*_cddb ,(*_cddb )[len (*_cddb )-_deg :]...);return nil ;};func (_cab *PSOperand )DebugString ()string {return _fg .Sprintf ("\u006fp\u003a\u0027\u0025\u0073\u0027",*_cab );};
+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";);
 
-// PSExecutor has its own execution stack and is used to executre a PS routine (program).
-type PSExecutor struct{Stack *PSStack ;_fb *PSProgram ;};
+// 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");
 
-// MakeBool returns a new PSBoolean object initialized with `val`.
-func MakeBool (val bool )*PSBoolean {_ade :=PSBoolean {};_ade .Val =val ;return &_ade };func (_gdg *PSOperand )ifCondition (_caff *PSStack )error {_edc ,_afc :=_caff .Pop ();if _afc !=nil {return _afc ;};_aac ,_afc :=_caff .Pop ();if _afc !=nil {return _afc ;};_gbfd ,_abad :=_edc .(*PSProgram );if !_abad {return ErrTypeCheck ;};_cba ,_abad :=_aac .(*PSBoolean );if !_abad {return ErrTypeCheck ;};if _cba .Val {_eaf :=_gbfd .Exec (_caff );return _eaf ;};return nil ;};
-
-// Exec executes the program, typically leaving output values on the stack.
-func (_cdd *PSProgram )Exec (stack *PSStack )error {for _ ,_fdf :=range *_cdd {var _fgd error ;switch _dcg :=_fdf .(type ){case *PSInteger :_cfd :=_dcg ;_fgd =stack .Push (_cfd );case *PSReal :_caa :=_dcg ;_fgd =stack .Push (_caa );case *PSBoolean :_fc :=_dcg ;_fgd =stack .Push (_fc );case *PSProgram :_egf :=_dcg ;_fgd =stack .Push (_egf );case *PSOperand :_geb :=_dcg ;_fgd =_geb .Exec (stack );default:return ErrTypeCheck ;};if _fgd !=nil {return _fgd ;};};return nil ;};func (_ge *PSInteger )Duplicate ()PSObject {_c :=PSInteger {};_c .Val =_ge .Val ;return &_c };func (_decc *PSOperand )sub (_fgdb *PSStack )error {_gce ,_gadb :=_fgdb .Pop ();if _gadb !=nil {return _gadb ;};_ddga ,_gadb :=_fgdb .Pop ();if _gadb !=nil {return _gadb ;};_agg ,_dcec :=_gce .(*PSReal );_badc ,_gefb :=_gce .(*PSInteger );if !_dcec &&!_gefb {return ErrTypeCheck ;};_efd ,_acg :=_ddga .(*PSReal );_aaa ,_fdd :=_ddga .(*PSInteger );if !_acg &&!_fdd {return ErrTypeCheck ;};if _gefb &&_fdd {_gca :=_aaa .Val -_badc .Val ;_ffef :=_fgdb .Push (MakeInteger (_gca ));return _ffef ;};var _bbcfb float64 =0;if _acg {_bbcfb =_efd .Val ;}else {_bbcfb =float64 (_aaa .Val );};if _dcec {_bbcfb -=_agg .Val ;}else {_bbcfb -=float64 (_badc .Val );};_gadb =_fgdb .Push (MakeReal (_bbcfb ));return _gadb ;};var ErrTypeCheck =_e .New ("\u0074\u0079p\u0065\u0020\u0063h\u0065\u0063\u006b\u0020\u0065\u0072\u0072\u006f\u0072");
-
-// MakeOperand returns a new PSOperand object based on string `val`.
-func MakeOperand (val string )*PSOperand {_gfeea :=PSOperand (val );return &_gfeea };func (_cbe *PSOperand )gt (_cae *PSStack )error {_ded ,_gec :=_cae .PopNumberAsFloat64 ();if _gec !=nil {return _gec ;};_dbed ,_gec :=_cae .PopNumberAsFloat64 ();if _gec !=nil {return _gec ;};if _eg .Abs (_dbed -_ded )< _a {_eea :=_cae .Push (MakeBool (false ));return _eea ;}else if _dbed > _ded {_fda :=_cae .Push (MakeBool (true ));return _fda ;}else {_egb :=_cae .Push (MakeBool (false ));return _egb ;};};
-
-// 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 _ff []float64 ;for _ ,_ac :=range objects {if _acc ,_g :=_ac .(*PSInteger );_g {_ff =append (_ff ,float64 (_acc .Val ));}else if _eb ,_af :=_ac .(*PSReal );_af {_ff =append (_ff ,_eb .Val );}else {return nil ,ErrTypeCheck ;};};return _ff ,nil ;};func (_cag *PSOperand )add (_dac *PSStack )error {_bae ,_gcb :=_dac .Pop ();if _gcb !=nil {return _gcb ;};_baf ,_gcb :=_dac .Pop ();if _gcb !=nil {return _gcb ;};_bbd ,_dea :=_bae .(*PSReal );_ffg ,_df :=_bae .(*PSInteger );if !_dea &&!_df {return ErrTypeCheck ;};_dec ,_agf :=_baf .(*PSReal );_bdc ,_gbc :=_baf .(*PSInteger );if !_agf &&!_gbc {return ErrTypeCheck ;};if _df &&_gbc {_ffb :=_ffg .Val +_bdc .Val ;_gee :=_dac .Push (MakeInteger (_ffb ));return _gee ;};var _adg float64 =0;if _dea {_adg =_bbd .Val ;}else {_adg =float64 (_ffg .Val );};if _agf {_adg +=_dec .Val ;}else {_adg +=float64 (_bdc .Val );};_gcb =_dac .Push (MakeReal (_adg ));return _gcb ;};var ErrRangeCheck =_e .New ("\u0072\u0061\u006e\u0067\u0065\u0020\u0063\u0068\u0065\u0063\u006b\u0020e\u0072\u0072\u006f\u0072");func (_cce *PSOperand )lt (_cbfa *PSStack )error {_agcf ,_gag :=_cbfa .PopNumberAsFloat64 ();if _gag !=nil {return _gag ;};_fggb ,_gag :=_cbfa .PopNumberAsFloat64 ();if _gag !=nil {return _gag ;};if _eg .Abs (_fggb -_agcf )< _a {_cgc :=_cbfa .Push (MakeBool (false ));return _cgc ;}else if _fggb < _agcf {_dggb :=_cbfa .Push (MakeBool (true ));return _dggb ;}else {_bbdg :=_cbfa .Push (MakeBool (false ));return _bbdg ;};};func _abbb (_dfaa int )int {if _dfaa < 0{return -_dfaa ;};return _dfaa ;};var ErrUndefinedResult =_e .New ("\u0075\u006e\u0064\u0065fi\u006e\u0065\u0064\u0020\u0072\u0065\u0073\u0075\u006c\u0074\u0020\u0065\u0072\u0072o\u0072");func (_ag *PSProgram )DebugString ()string {_gb :="\u007b\u0020";for _ ,_ffc :=range *_ag {_gb +=_ffc .DebugString ();_gb +="\u0020";};_gb +="\u007d";return _gb ;};func (_agfa *PSOperand )div (_cda *PSStack )error {_dbd ,_dcge :=_cda .Pop ();if _dcge !=nil {return _dcge ;};_cdf ,_dcge :=_cda .Pop ();if _dcge !=nil {return _dcge ;};_bbcf ,_dd :=_dbd .(*PSReal );_acb ,_ada :=_dbd .(*PSInteger );if !_dd &&!_ada {return ErrTypeCheck ;};if _dd &&_bbcf .Val ==0{return ErrUndefinedResult ;};if _ada &&_acb .Val ==0{return ErrUndefinedResult ;};_fcg ,_bafe :=_cdf .(*PSReal );_eeb ,_gd :=_cdf .(*PSInteger );if !_bafe &&!_gd {return ErrTypeCheck ;};var _cca float64 =0;if _bafe {_cca =_fcg .Val ;}else {_cca =float64 (_eeb .Val );};if _dd {_cca /=_bbcf .Val ;}else {_cca /=float64 (_acb .Val );};_dcge =_cda .Push (MakeReal (_cca ));return _dcge ;};func (_ebab *PSOperand )mod (_fbd *PSStack )error {_adbe ,_gdgg :=_fbd .Pop ();if _gdgg !=nil {return _gdgg ;};_edg ,_gdgg :=_fbd .Pop ();if _gdgg !=nil {return _gdgg ;};_gfg ,_bcag :=_adbe .(*PSInteger );if !_bcag {return ErrTypeCheck ;};if _gfg .Val ==0{return ErrUndefinedResult ;};_ecc ,_bcag :=_edg .(*PSInteger );if !_bcag {return ErrTypeCheck ;};_cgdd :=_ecc .Val %_gfg .Val ;_gdgg =_fbd .Push (MakeInteger (_cgdd ));return _gdgg ;};func (_dcc *PSOperand )dup (_bcc *PSStack )error {_fgg ,_eggd :=_bcc .Pop ();if _eggd !=nil {return _eggd ;};_eggd =_bcc .Push (_fgg );if _eggd !=nil {return _eggd ;};_eggd =_bcc .Push (_fgg .Duplicate ());return _eggd ;};func (_ebd *PSOperand )bitshift (_dgb *PSStack )error {_dgf ,_ed :=_dgb .PopInteger ();if _ed !=nil {return _ed ;};_bgec ,_ed :=_dgb .PopInteger ();if _ed !=nil {return _ed ;};var _eca int ;if _dgf >=0{_eca =_bgec <<uint (_dgf );}else {_eca =_bgec >>uint (-_dgf );};_ed =_dgb .Push (MakeInteger (_eca ));return _ed ;};func (_cegf *PSOperand )atan (_dee *PSStack )error {_adb ,_aag :=_dee .PopNumberAsFloat64 ();if _aag !=nil {return _aag ;};_egg ,_aag :=_dee .PopNumberAsFloat64 ();if _aag !=nil {return _aag ;};if _adb ==0{var _bba error ;if _egg < 0{_bba =_dee .Push (MakeReal (270));}else {_bba =_dee .Push (MakeReal (90));};return _bba ;};_cdde :=_egg /_adb ;_dfgf :=_eg .Atan (_cdde )*180/_eg .Pi ;_aag =_dee .Push (MakeReal (_dfgf ));return _aag ;};
+// 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");
 
 // PopNumberAsFloat64 pops and return the numeric value of the top of the stack as a float64.
 // Real or integer only.
-func (_ccea *PSStack )PopNumberAsFloat64 ()(float64 ,error ){_ebc ,_gfa :=_ccea .Pop ();if _gfa !=nil {return 0,_gfa ;};if _bgfd ,_ffgd :=_ebc .(*PSReal );_ffgd {return _bgfd .Val ,nil ;}else if _gagc ,_ggd :=_ebc .(*PSInteger );_ggd {return float64 (_gagc .Val ),nil ;}else {return 0,ErrTypeCheck ;};};func (_ebb *PSOperand )sqrt (_gbag *PSStack )error {_fcfe ,_dcaa :=_gbag .PopNumberAsFloat64 ();if _dcaa !=nil {return _dcaa ;};if _fcfe < 0{return ErrRangeCheck ;};_gad :=_eg .Sqrt (_fcfe );_dcaa =_gbag .Push (MakeReal (_gad ));return _dcaa ;};func (_dce *PSOperand )cvr (_gbf *PSStack )error {_bbc ,_ega :=_gbf .Pop ();if _ega !=nil {return _ega ;};if _baa ,_ebf :=_bbc .(*PSReal );_ebf {_ega =_gbf .Push (MakeReal (_baa .Val ));}else if _bdad ,_dead :=_bbc .(*PSInteger );_dead {_ega =_gbf .Push (MakeReal (float64 (_bdad .Val )));}else {return ErrTypeCheck ;};return _ega ;};
+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 ;};
 
-// PSInteger represents an integer.
-type PSInteger struct{Val int ;};func (_bf *PSProgram )String ()string {_ca :="\u007b\u0020";for _ ,_afg :=range *_bf {_ca +=_afg .String ();_ca +="\u0020";};_ca +="\u007d";return _ca ;};func (_gae *PSOperand )ln (_edce *PSStack )error {_gdb ,_gacg :=_edce .PopNumberAsFloat64 ();if _gacg !=nil {return _gacg ;};_cabc :=_eg .Log (_gdb );_gacg =_edce .Push (MakeReal (_cabc ));return _gacg ;};
+// 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 ;};
 
-// Append appends an object to the PSProgram.
-func (_aa *PSProgram )Append (obj PSObject ){*_aa =append (*_aa ,obj )};func (_bbg *PSOperand )ne (_cfaa *PSStack )error {_bbgd :=_bbg .eq (_cfaa );if _bbgd !=nil {return _bbgd ;};_bbgd =_bbg .not (_cfaa );return _bbgd ;};func (_ga *PSProgram )Duplicate ()PSObject {_db :=&PSProgram {};for _ ,_caf :=range *_ga {_db .Append (_caf .Duplicate ());};return _db ;};
+// 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 );};
 
-// String returns a string representation of the stack.
-func (_gfee *PSStack )String ()string {_bdge :="\u005b\u0020";for _ ,_agfd :=range *_gfee {_bdge +=_agfd .String ();_bdge +="\u0020";};_bdge +="\u005d";return _bdge ;};
+// PSReal represents a real number.
+type PSReal struct{Val float64 ;};
+
+// 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 ;};
+
+// NewPSStack returns an initialized PSStack.
+func NewPSStack ()*PSStack {return &PSStack {}};
 
 // PSObject represents a postscript object.
 type PSObject interface{
@@ -56,64 +55,65 @@ Duplicate ()PSObject ;
 DebugString ()string ;
 
 // String returns a string representation of the PSObject.
-String ()string ;};func (_ad *PSOperand )String ()string {return _fg .Sprintf ("\u0025\u0073",*_ad )};func (_gc *PSOperand )Duplicate ()PSObject {_fde :=*_gc ;return &_fde };func (_bbde *PSOperand )ceiling (_bda *PSStack )error {_decb ,_ace :=_bda .Pop ();if _ace !=nil {return _ace ;};if _efc ,_gef :=_decb .(*PSReal );_gef {_ace =_bda .Push (MakeReal (_eg .Ceil (_efc .Val )));}else if _deb ,_edb :=_decb .(*PSInteger );_edb {_ace =_bda .Push (MakeInteger (_deb .Val ));}else {_ace =ErrTypeCheck ;};return _ace ;};func (_bgge *PSParser )parseFunction ()(*PSProgram ,error ){_fge ,_ :=_bgge ._gde .ReadByte ();if _fge !='{'{return nil ,_e .New ("\u0069\u006ev\u0061\u006c\u0069d\u0020\u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");};_gccd :=NewPSProgram ();for {_bgge .skipSpaces ();_fbdf ,_dbc :=_bgge ._gde .Peek (2);if _dbc !=nil {if _dbc ==_ea .EOF {break ;};return nil ,_dbc ;};_b .Log .Trace ("\u0050e\u0065k\u0020\u0073\u0074\u0072\u0069\u006e\u0067\u003a\u0020\u0025\u0073",string (_fbdf ));if _fbdf [0]=='}'{_b .Log .Trace ("\u0045\u004f\u0046 \u0066\u0075\u006e\u0063\u0074\u0069\u006f\u006e");_bgge ._gde .ReadByte ();break ;}else if _fbdf [0]=='{'{_b .Log .Trace ("\u0046u\u006e\u0063\u0074\u0069\u006f\u006e!");_fce ,_faa :=_bgge .parseFunction ();if _faa !=nil {return nil ,_faa ;};_gccd .Append (_fce );}else if _feb .IsDecimalDigit (_fbdf [0])||(_fbdf [0]=='-'&&_feb .IsDecimalDigit (_fbdf [1])){_b .Log .Trace ("\u002d>\u004e\u0075\u006d\u0062\u0065\u0072!");_bbgg ,_gcaa :=_bgge .parseNumber ();if _gcaa !=nil {return nil ,_gcaa ;};_gccd .Append (_bbgg );}else {_b .Log .Trace ("\u002d>\u004fp\u0065\u0072\u0061\u006e\u0064 \u006f\u0072 \u0062\u006f\u006f\u006c\u003f");_fbdf ,_ =_bgge ._gde .Peek (5);_fafb :=string (_fbdf );_b .Log .Trace ("\u0050\u0065\u0065k\u0020\u0073\u0074\u0072\u003a\u0020\u0025\u0073",_fafb );if (len (_fafb )> 4)&&(_fafb [:5]=="\u0066\u0061\u006cs\u0065"){_fbgc ,_abce :=_bgge .parseBool ();if _abce !=nil {return nil ,_abce ;};_gccd .Append (_fbgc );}else if (len (_fafb )> 3)&&(_fafb [:4]=="\u0074\u0072\u0075\u0065"){_afbf ,_baad :=_bgge .parseBool ();if _baad !=nil {return nil ,_baad ;};_gccd .Append (_afbf );}else {_aadb ,_cedb :=_bgge .parseOperand ();if _cedb !=nil {return nil ,_cedb ;};_gccd .Append (_aadb );};};};return _gccd ,nil ;};func (_dbdc *PSOperand )floor (_abc *PSStack )error {_cfa ,_gdd :=_abc .Pop ();if _gdd !=nil {return _gdd ;};if _cfe ,_cdbc :=_cfa .(*PSReal );_cdbc {_gdd =_abc .Push (MakeReal (_eg .Floor (_cfe .Val )));}else if _cac ,_ede :=_cfa .(*PSInteger );_ede {_gdd =_abc .Push (MakeInteger (_cac .Val ));}else {return ErrTypeCheck ;};return _gdd ;};const _a =0.000001;func (_gf *PSBoolean )String ()string {return _fg .Sprintf ("\u0025\u0076",_gf .Val )};func (_dbb *PSOperand )cvi (_dba *PSStack )error {_gabc ,_fgc :=_dba .Pop ();if _fgc !=nil {return _fgc ;};if _gebg ,_bef :=_gabc .(*PSReal );_bef {_afgb :=int (_gebg .Val );_fgc =_dba .Push (MakeInteger (_afgb ));}else if _cdbb ,_efa :=_gabc .(*PSInteger );_efa {_decd :=_cdbb .Val ;_fgc =_dba .Push (MakeInteger (_decd ));}else {return ErrTypeCheck ;};return _fgc ;};func (_gaa *PSOperand )roll (_gggf *PSStack )error {_caae ,_edcc :=_gggf .Pop ();if _edcc !=nil {return _edcc ;};_bcd ,_edcc :=_gggf .Pop ();if _edcc !=nil {return _edcc ;};_abae ,_ggae :=_caae .(*PSInteger );if !_ggae {return ErrTypeCheck ;};_bgag ,_ggae :=_bcd .(*PSInteger );if !_ggae {return ErrTypeCheck ;};if _bgag .Val < 0{return ErrRangeCheck ;};if _bgag .Val ==0||_bgag .Val ==1{return nil ;};if _bgag .Val > len (*_gggf ){return ErrStackUnderflow ;};for _fdb :=0;_fdb < _abbb (_abae .Val );_fdb ++{var _ggf []PSObject ;_ggf =(*_gggf )[len (*_gggf )-(_bgag .Val ):len (*_gggf )];if _abae .Val > 0{_ecee :=_ggf [len (_ggf )-1];_ggf =append ([]PSObject {_ecee },_ggf [0:len (_ggf )-1]...);}else {_cceb :=_ggf [len (_ggf )-_bgag .Val ];_ggf =append (_ggf [1:],_cceb );};_bgg :=append ((*_gggf )[0:len (*_gggf )-_bgag .Val ],_ggf ...);_gggf =&_bgg ;};return nil ;};
-
-// DebugString returns a descriptive string representation of the stack - intended for debugging.
-func (_fdbd *PSStack )DebugString ()string {_dceca :="\u005b\u0020";for _ ,_bfcf :=range *_fdbd {_dceca +=_bfcf .DebugString ();_dceca +="\u0020";};_dceca +="\u005d";return _dceca ;};func (_gg *PSInteger )DebugString ()string {return _fg .Sprintf ("\u0069\u006e\u0074\u003a\u0025\u0064",_gg .Val );};func (_dc *PSInteger )String ()string {return _fg .Sprintf ("\u0025\u0064",_dc .Val )};func (_affd *PSOperand )mul (_bdgc *PSStack )error {_egd ,_ege :=_bdgc .Pop ();if _ege !=nil {return _ege ;};_ggg ,_ege :=_bdgc .Pop ();if _ege !=nil {return _ege ;};_afa ,_ffdf :=_egd .(*PSReal );_gbfb ,_abac :=_egd .(*PSInteger );if !_ffdf &&!_abac {return ErrTypeCheck ;};_baee ,_acfc :=_ggg .(*PSReal );_bad ,_fbg :=_ggg .(*PSInteger );if !_acfc &&!_fbg {return ErrTypeCheck ;};if _abac &&_fbg {_befc :=_gbfb .Val *_bad .Val ;_ffa :=_bdgc .Push (MakeInteger (_befc ));return _ffa ;};var _fef float64 =0;if _ffdf {_fef =_afa .Val ;}else {_fef =float64 (_gbfb .Val );};if _acfc {_fef *=_baee .Val ;}else {_fef *=float64 (_bad .Val );};_ege =_bdgc .Push (MakeReal (_fef ));return _ege ;};
-
-// PSBoolean represents a boolean value.
-type PSBoolean struct{Val bool ;};func (_bgf *PSOperand )abs (_gfd *PSStack )error {_gcc ,_bd :=_gfd .Pop ();if _bd !=nil {return _bd ;};if _ffe ,_ebe :=_gcc .(*PSReal );_ebe {_aca :=_ffe .Val ;if _aca < 0{_bd =_gfd .Push (MakeReal (-_aca ));}else {_bd =_gfd .Push (MakeReal (_aca ));};}else if _ece ,_fga :=_gcc .(*PSInteger );_fga {_gfe :=_ece .Val ;if _gfe < 0{_bd =_gfd .Push (MakeInteger (-_gfe ));}else {_bd =_gfd .Push (MakeInteger (_gfe ));};}else {return ErrTypeCheck ;};return _bd ;};func (_cga *PSOperand )exp (_aga *PSStack )error {_ced ,_bga :=_aga .PopNumberAsFloat64 ();if _bga !=nil {return _bga ;};_bcbf ,_bga :=_aga .PopNumberAsFloat64 ();if _bga !=nil {return _bga ;};if _eg .Abs (_ced )< 1&&_bcbf < 0{return ErrUndefinedResult ;};_dgg :=_eg .Pow (_bcbf ,_ced );_bga =_aga .Push (MakeReal (_dgg ));return _bga ;};func (_bb *PSReal )DebugString ()string {return _fg .Sprintf ("\u0072e\u0061\u006c\u003a\u0025\u002e\u0035f",_bb .Val );};func (_eggb *PSParser )parseNumber ()(PSObject ,error ){_eaga ,_adffa :=_feb .ParseNumber (_eggb ._gde );if _adffa !=nil {return nil ,_adffa ;};switch _gage :=_eaga .(type ){case *_feb .PdfObjectFloat :return MakeReal (float64 (*_gage )),nil ;case *_feb .PdfObjectInteger :return MakeInteger (int (*_gage )),nil ;};return nil ,_fg .Errorf ("\u0075n\u0068\u0061\u006e\u0064\u006c\u0065\u0064\u0020\u006e\u0075\u006db\u0065\u0072\u0020\u0074\u0079\u0070\u0065\u0020\u0025\u0054",_eaga );};var ErrUnsupportedOperand =_e .New ("\u0075\u006e\u0073\u0075pp\u006f\u0072\u0074\u0065\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064");func (_abcf *PSParser )parseOperand ()(*PSOperand ,error ){var _dfe []byte ;for {_fbcb ,_abb :=_abcf ._gde .Peek (1);if _abb !=nil {if _abb ==_ea .EOF {break ;};return nil ,_abb ;};if _feb .IsDelimiter (_fbcb [0]){break ;};if _feb .IsWhiteSpace (_fbcb [0]){break ;};_bdd ,_ :=_abcf ._gde .ReadByte ();_dfe =append (_dfe ,_bdd );};if len (_dfe )==0{return nil ,_e .New ("\u0069\u006e\u0076al\u0069\u0064\u0020\u006f\u0070\u0065\u0072\u0061\u006e\u0064\u0020\u0028\u0065\u006d\u0070\u0074\u0079\u0029");};return MakeOperand (string (_dfe )),nil ;};func (_gfde *PSOperand )log (_fgcc *PSStack )error {_cadb ,_ddg :=_fgcc .PopNumberAsFloat64 ();if _ddg !=nil {return _ddg ;};_bbe :=_eg .Log10 (_cadb );_ddg =_fgcc .Push (MakeReal (_bbe ));return _ddg ;};
-
-// Parse parses the postscript and store as a program that can be executed.
-func (_bbdf *PSParser )Parse ()(*PSProgram ,error ){_bbdf .skipSpaces ();_dgff ,_dag :=_bbdf ._gde .Peek (2);if _dag !=nil {return nil ,_dag ;};if _dgff [0]!='{'{return nil ,_e .New ("\u0069\u006e\u0076\u0061\u006c\u0069\u0064\u0020\u0050\u0053\u0020\u0050\u0072\u006f\u0067\u0072\u0061\u006d\u0020\u006e\u006f\u0074\u0020\u0073t\u0061\u0072\u0074\u0069\u006eg\u0020\u0077i\u0074\u0068\u0020\u007b");};_abg ,_dag :=_bbdf .parseFunction ();if _dag !=nil &&_dag !=_ea .EOF {return nil ,_dag ;};return _abg ,_dag ;};func (_bea *PSOperand )ifelse (_aff *PSStack )error {_dbee ,_dbda :=_aff .Pop ();if _dbda !=nil {return _dbda ;};_gbg ,_dbda :=_aff .Pop ();if _dbda !=nil {return _dbda ;};_eba ,_dbda :=_aff .Pop ();if _dbda !=nil {return _dbda ;};_cea ,_gga :=_dbee .(*PSProgram );if !_gga {return ErrTypeCheck ;};_adf ,_gga :=_gbg .(*PSProgram );if !_gga {return ErrTypeCheck ;};_def ,_gga :=_eba .(*PSBoolean );if !_gga {return ErrTypeCheck ;};if _def .Val {_bebd :=_adf .Exec (_aff );return _bebd ;};_dbda =_cea .Exec (_aff );return _dbda ;};
-
-// MakeInteger returns a new PSInteger object initialized with `val`.
-func MakeInteger (val int )*PSInteger {_aef :=PSInteger {};_aef .Val =val ;return &_aef };func (_ffd *PSBoolean )DebugString ()string {return _fg .Sprintf ("\u0062o\u006f\u006c\u003a\u0025\u0076",_ffd .Val );};func (_cbee *PSOperand )not (_bab *PSStack )error {_eccg ,_cgdg :=_bab .Pop ();if _cgdg !=nil {return _cgdg ;};if _aegg ,_cdbbg :=_eccg .(*PSBoolean );_cdbbg {_cgdg =_bab .Push (MakeBool (!_aegg .Val ));return _cgdg ;}else if _affe ,_bagf :=_eccg .(*PSInteger );_bagf {_cgdg =_bab .Push (MakeInteger (^_affe .Val ));return _cgdg ;}else {return ErrTypeCheck ;};};func (_edec *PSOperand )ge (_bage *PSStack )error {_bfe ,_bdg :=_bage .PopNumberAsFloat64 ();if _bdg !=nil {return _bdg ;};_adc ,_bdg :=_bage .PopNumberAsFloat64 ();if _bdg !=nil {return _bdg ;};if _eg .Abs (_adc -_bfe )< _a {_fad :=_bage .Push (MakeBool (true ));return _fad ;}else if _adc > _bfe {_fff :=_bage .Push (MakeBool (true ));return _fff ;}else {_cef :=_bage .Push (MakeBool (false ));return _cef ;};};func (_ee *PSReal )Duplicate ()PSObject {_aba :=PSReal {};_aba .Val =_ee .Val ;return &_aba };var ErrStackOverflow =_e .New ("\u0073\u0074\u0061\u0063\u006b\u0020\u006f\u0076\u0065r\u0066\u006c\u006f\u0077");
-
-// NewPSExecutor returns an initialized PSExecutor for an input `program`.
-func NewPSExecutor (program *PSProgram )*PSExecutor {_de :=&PSExecutor {};_de .Stack =NewPSStack ();_de ._fb =program ;return _de ;};
-
-// PSReal represents a real number.
-type PSReal struct{Val float64 ;};
-
-// NewPSProgram returns an empty, initialized PSProgram.
-func NewPSProgram ()*PSProgram {return &PSProgram {}};func (_cd *PSReal )String ()string {return _fg .Sprintf ("\u0025\u002e\u0035\u0066",_cd .Val )};
-
-// PSOperand represents a Postscript operand (text string).
-type PSOperand string ;
-
-// Push pushes an object on top of the stack.
-func (_edee *PSStack )Push (obj PSObject )error {if len (*_edee )> 100{return ErrStackOverflow ;};*_edee =append (*_edee ,obj );return nil ;};
-
-// Execute executes the program for an input parameters `objects` and returns a slice of output objects.
-func (_fd *PSExecutor )Execute (objects []PSObject )([]PSObject ,error ){for _ ,_bg :=range objects {_ec :=_fd .Stack .Push (_bg );if _ec !=nil {return nil ,_ec ;};};_bge :=_fd ._fb .Exec (_fd .Stack );if _bge !=nil {_b .Log .Debug ("\u0045x\u0065c\u0020\u0066\u0061\u0069\u006c\u0065\u0064\u003a\u0020\u0025\u0076",_bge );return nil ,_bge ;};_febb :=[]PSObject (*_fd .Stack );_fd .Stack .Empty ();return _febb ,nil ;};
-
-// PSParser is a basic Postscript parser.
-type PSParser struct{_gde *_fe .Reader };func (_adff *PSOperand )or (_dcgb *PSStack )error {_befe ,_adac :=_dcgb .Pop ();if _adac !=nil {return _adac ;};_dca ,_adac :=_dcgb .Pop ();if _adac !=nil {return _adac ;};if _dgd ,_bgc :=_befe .(*PSBoolean );_bgc {_fbe ,_fcfb :=_dca .(*PSBoolean );if !_fcfb {return ErrTypeCheck ;};_adac =_dcgb .Push (MakeBool (_dgd .Val ||_fbe .Val ));return _adac ;};if _bgcg ,_faf :=_befe .(*PSInteger );_faf {_fbc ,_fdec :=_dca .(*PSInteger );if !_fdec {return ErrTypeCheck ;};_adac =_dcgb .Push (MakeInteger (_bgcg .Val |_fbc .Val ));return _adac ;};return ErrTypeCheck ;};func (_afe *PSParser )parseBool ()(*PSBoolean ,error ){_dcfb ,_fgef :=_afe ._gde .Peek (4);if _fgef !=nil {return MakeBool (false ),_fgef ;};if (len (_dcfb )>=4)&&(string (_dcfb [:4])=="\u0074\u0072\u0075\u0065"){_afe ._gde .Discard (4);return MakeBool (true ),nil ;};_dcfb ,_fgef =_afe ._gde .Peek (5);if _fgef !=nil {return MakeBool (false ),_fgef ;};if (len (_dcfb )>=5)&&(string (_dcfb [:5])=="\u0066\u0061\u006cs\u0065"){_afe ._gde .Discard (5);return MakeBool (false ),nil ;};return MakeBool (false ),_e .New ("\u0075n\u0065\u0078\u0070\u0065c\u0074\u0065\u0064\u0020\u0062o\u006fl\u0065a\u006e\u0020\u0073\u0074\u0072\u0069\u006eg");};func (_fcc *PSOperand )le (_ecf *PSStack )error {_eebg ,_cedc :=_ecf .PopNumberAsFloat64 ();if _cedc !=nil {return _cedc ;};_dcce ,_cedc :=_ecf .PopNumberAsFloat64 ();if _cedc !=nil {return _cedc ;};if _eg .Abs (_dcce -_eebg )< _a {_bgd :=_ecf .Push (MakeBool (true ));return _bgd ;}else if _dcce < _eebg {_bfbf :=_ecf .Push (MakeBool (true ));return _bfbf ;}else {_bfc :=_ecf .Push (MakeBool (false ));return _bfc ;};};func (_be *PSOperand )cos (_abe *PSStack )error {_beb ,_gfb :=_abe .PopNumberAsFloat64 ();if _gfb !=nil {return _gfb ;};_bgee :=_eg .Cos (_beb *_eg .Pi /180.0);_gfb =_abe .Push (MakeReal (_bgee ));return _gfb ;};
+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 (_ddbg *PSStack )PopInteger ()(int ,error ){_ebbe ,_aed :=_ddbg .Pop ();if _aed !=nil {return 0,_aed ;};if _abd ,_fee :=_ebbe .(*PSInteger );_fee {return _abd .Val ,nil ;};return 0,ErrTypeCheck ;};
-
-// Exec executes the operand `op` in the state specified by `stack`.
-func (_aad *PSOperand )Exec (stack *PSStack )error {_cc :=ErrUnsupportedOperand ;switch *_aad {case "\u0061\u0062\u0073":_cc =_aad .abs (stack );case "\u0061\u0064\u0064":_cc =_aad .add (stack );case "\u0061\u006e\u0064":_cc =_aad .and (stack );case "\u0061\u0074\u0061\u006e":_cc =_aad .atan (stack );case "\u0062\u0069\u0074\u0073\u0068\u0069\u0066\u0074":_cc =_aad .bitshift (stack );case "\u0063e\u0069\u006c\u0069\u006e\u0067":_cc =_aad .ceiling (stack );case "\u0063\u006f\u0070\u0079":_cc =_aad .copy (stack );case "\u0063\u006f\u0073":_cc =_aad .cos (stack );case "\u0063\u0076\u0069":_cc =_aad .cvi (stack );case "\u0063\u0076\u0072":_cc =_aad .cvr (stack );case "\u0064\u0069\u0076":_cc =_aad .div (stack );case "\u0064\u0075\u0070":_cc =_aad .dup (stack );case "\u0065\u0071":_cc =_aad .eq (stack );case "\u0065\u0078\u0063\u0068":_cc =_aad .exch (stack );case "\u0065\u0078\u0070":_cc =_aad .exp (stack );case "\u0066\u006c\u006fo\u0072":_cc =_aad .floor (stack );case "\u0067\u0065":_cc =_aad .ge (stack );case "\u0067\u0074":_cc =_aad .gt (stack );case "\u0069\u0064\u0069\u0076":_cc =_aad .idiv (stack );case "\u0069\u0066":_cc =_aad .ifCondition (stack );case "\u0069\u0066\u0065\u006c\u0073\u0065":_cc =_aad .ifelse (stack );case "\u0069\u006e\u0064e\u0078":_cc =_aad .index (stack );case "\u006c\u0065":_cc =_aad .le (stack );case "\u006c\u006f\u0067":_cc =_aad .log (stack );case "\u006c\u006e":_cc =_aad .ln (stack );case "\u006c\u0074":_cc =_aad .lt (stack );case "\u006d\u006f\u0064":_cc =_aad .mod (stack );case "\u006d\u0075\u006c":_cc =_aad .mul (stack );case "\u006e\u0065":_cc =_aad .ne (stack );case "\u006e\u0065\u0067":_cc =_aad .neg (stack );case "\u006e\u006f\u0074":_cc =_aad .not (stack );case "\u006f\u0072":_cc =_aad .or (stack );case "\u0070\u006f\u0070":_cc =_aad .pop (stack );case "\u0072\u006f\u0075n\u0064":_cc =_aad .round (stack );case "\u0072\u006f\u006c\u006c":_cc =_aad .roll (stack );case "\u0073\u0069\u006e":_cc =_aad .sin (stack );case "\u0073\u0071\u0072\u0074":_cc =_aad .sqrt (stack );case "\u0073\u0075\u0062":_cc =_aad .sub (stack );case "\u0074\u0072\u0075\u006e\u0063\u0061\u0074\u0065":_cc =_aad .truncate (stack );case "\u0078\u006f\u0072":_cc =_aad .xor (stack );};return _cc ;};
-
-// PSProgram defines a Postscript program which is a series of PS objects (arguments, commands, programs etc).
-type PSProgram []PSObject ;func (_faga *PSOperand )round (_cddd *PSStack )error {_bfd ,_dfa :=_cddd .Pop ();if _dfa !=nil {return _dfa ;};if _gba ,_gbe :=_bfd .(*PSReal );_gbe {_dfa =_cddd .Push (MakeReal (_eg .Floor (_gba .Val +0.5)));}else if _eage ,_caef :=_bfd .(*PSInteger );_caef {_dfa =_cddd .Push (MakeInteger (_eage .Val ));}else {return ErrTypeCheck ;};return _dfa ;};func (_ce *PSOperand )and (_fec *PSStack )error {_fa ,_aaf :=_fec .Pop ();if _aaf !=nil {return _aaf ;};_bc ,_aaf :=_fec .Pop ();if _aaf !=nil {return _aaf ;};if _dg ,_bde :=_fa .(*PSBoolean );_bde {_bca ,_eeg :=_bc .(*PSBoolean );if !_eeg {return ErrTypeCheck ;};_aaf =_fec .Push (MakeBool (_dg .Val &&_bca .Val ));return _aaf ;};if _efb ,_ceg :=_fa .(*PSInteger );_ceg {_dfg ,_cdb :=_bc .(*PSInteger );if !_cdb {return ErrTypeCheck ;};_aaf =_fec .Push (MakeInteger (_efb .Val &_dfg .Val ));return _aaf ;};return ErrTypeCheck ;};func (_da *PSBoolean )Duplicate ()PSObject {_ef :=PSBoolean {};_ef .Val =_da .Val ;return &_ef };
-
-// Pop pops an object from the top of the stack.
-func (_cbeg *PSStack )Pop ()(PSObject ,error ){if len (*_cbeg )< 1{return nil ,ErrStackUnderflow ;};_egec :=(*_cbeg )[len (*_cbeg )-1];*_cbeg =(*_cbeg )[0:len (*_cbeg )-1];return _egec ,nil ;};func (_eed *PSOperand )xor (_bee *PSStack )error {_ddc ,_debg :=_bee .Pop ();if _debg !=nil {return _debg ;};_ecg ,_debg :=_bee .Pop ();if _debg !=nil {return _debg ;};if _bdb ,_aec :=_ddc .(*PSBoolean );_aec {_dedd ,_aeec :=_ecg .(*PSBoolean );if !_aeec {return ErrTypeCheck ;};_debg =_bee .Push (MakeBool (_bdb .Val !=_dedd .Val ));return _debg ;};if _fffb ,_dga :=_ddc .(*PSInteger );_dga {_gabd ,_abada :=_ecg .(*PSInteger );if !_abada {return ErrTypeCheck ;};_debg =_bee .Push (MakeInteger (_fffb .Val ^_gabd .Val ));return _debg ;};return ErrTypeCheck ;};var ErrStackUnderflow =_e .New ("\u0073t\u0061c\u006b\u0020\u0075\u006e\u0064\u0065\u0072\u0066\u006c\u006f\u0077");func (_ccf *PSParser )skipSpaces ()(int ,error ){_bfde :=0;for {_gcf ,_acda :=_ccf ._gde .Peek (1);if _acda !=nil {return 0,_acda ;};if _feb .IsWhiteSpace (_gcf [0]){_ccf ._gde .ReadByte ();_bfde ++;}else {break ;};};return _bfde ,nil ;};func (_gge *PSOperand )truncate (_afce *PSStack )error {_cgf ,_ecb :=_afce .Pop ();if _ecb !=nil {return _ecb ;};if _acdb ,_gcbc :=_cgf .(*PSReal );_gcbc {_cde :=int (_acdb .Val );_ecb =_afce .Push (MakeReal (float64 (_cde )));}else if _gfcd ,_fbec :=_cgf .(*PSInteger );_fbec {_ecb =_afce .Push (MakeInteger (_gfcd .Val ));}else {return ErrTypeCheck ;};return _ecb ;};func (_edba *PSOperand )index (_eeab *PSStack )error {_fcf ,_cad :=_eeab .Pop ();if _cad !=nil {return _cad ;};_bcae ,_fagd :=_fcf .(*PSInteger );if !_fagd {return ErrTypeCheck ;};if _bcae .Val < 0{return ErrRangeCheck ;};if _bcae .Val > len (*_eeab )-1{return ErrStackUnderflow ;};_adfe :=(*_eeab )[len (*_eeab )-1-_bcae .Val ];_cad =_eeab .Push (_adfe .Duplicate ());return _cad ;};
-
-// NewPSParser returns a new instance of the PDF Postscript parser from input data.
-func NewPSParser (content []byte )*PSParser {_bdab :=PSParser {};_bagd :=_d .NewBuffer (content );_bdab ._gde =_fe .NewReader (_bagd );return &_bdab ;};
-
-// MakeReal returns a new PSReal object initialized with `val`.
-func MakeReal (val float64 )*PSReal {_dbdb :=PSReal {};_dbdb .Val =val ;return &_dbdb };func (_egc *PSOperand )idiv (_egfe *PSStack )error {_dae ,_acd :=_egfe .Pop ();if _acd !=nil {return _acd ;};_ggb ,_acd :=_egfe .Pop ();if _acd !=nil {return _acd ;};_bce ,_gebb :=_dae .(*PSInteger );if !_gebb {return ErrTypeCheck ;};if _bce .Val ==0{return ErrUndefinedResult ;};_dfc ,_gebb :=_ggb .(*PSInteger );if !_gebb {return ErrTypeCheck ;};_fea :=_dfc .Val /_bce .Val ;_acd =_egfe .Push (MakeInteger (_fea ));return _acd ;};func (_geffc *PSOperand )pop (_baeb *PSStack )error {_ ,_gdc :=_baeb .Pop ();if _gdc !=nil {return _gdc ;};return nil ;};
+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 ;
+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 ;};};
+
+// 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 ;};
+
+// 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 (_dcff *PSStack )Empty (){*_dcff =[]PSObject {}};func (_aee *PSOperand )neg (_ccgb *PSStack )error {_gdf ,_acde :=_ccgb .Pop ();if _acde !=nil {return _acde ;};if _agd ,_dbbd :=_gdf .(*PSReal );_dbbd {_acde =_ccgb .Push (MakeReal (-_agd .Val ));return _acde ;}else if _eaa ,_bfa :=_gdf .(*PSInteger );_bfa {_acde =_ccgb .Push (MakeInteger (-_eaa .Val ));return _acde ;}else {return ErrTypeCheck ;};};func (_cdfa *PSOperand )exch (_fag *PSStack )error {_aeg ,_acf :=_fag .Pop ();if _acf !=nil {return _acf ;};_beff ,_acf :=_fag .Pop ();if _acf !=nil {return _acf ;};_acf =_fag .Push (_aeg );if _acf !=nil {return _acf ;};_acf =_fag .Push (_beff );return _acf ;};
+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 ;};};
 
-// NewPSStack returns an initialized PSStack.
-func NewPSStack ()*PSStack {return &PSStack {}};func (_bag *PSOperand )eq (_ccg *PSStack )error {_cgd ,_geff :=_ccg .Pop ();if _geff !=nil {return _geff ;};_bcb ,_geff :=_ccg .Pop ();if _geff !=nil {return _geff ;};_cb ,_ccag :=_cgd .(*PSBoolean );_gfc ,_gac :=_bcb .(*PSBoolean );if _ccag ||_gac {var _afgd error ;if _ccag &&_gac {_afgd =_ccg .Push (MakeBool (_cb .Val ==_gfc .Val ));}else {_afgd =_ccg .Push (MakeBool (false ));};return _afgd ;};var _edbg float64 ;var _gebe float64 ;if _cbf ,_ggc :=_cgd .(*PSInteger );_ggc {_edbg =float64 (_cbf .Val );}else if _ae ,_agc :=_cgd .(*PSReal );_agc {_edbg =_ae .Val ;}else {return ErrTypeCheck ;};if _dfd ,_acbc :=_bcb .(*PSInteger );_acbc {_gebe =float64 (_dfd .Val );}else if _gff ,_bfb :=_bcb .(*PSReal );_bfb {_gebe =_gff .Val ;}else {return ErrTypeCheck ;};if _eg .Abs (_gebe -_edbg )< _a {_geff =_ccg .Push (MakeBool (true ));}else {_geff =_ccg .Push (MakeBool (false ));};return _geff ;};
+// 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 ;};
+
+// 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 ;};