unipdf/model/optimize/optimize.go

//
// 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 optimize ;import (_ff "bytes";_ee "crypto/md5";_bb "errors";_a "fmt";_f "github.com/unidoc/unipdf/v3/common";_cg "github.com/unidoc/unipdf/v3/contentstream";_fbb "github.com/unidoc/unipdf/v3/core";_b "github.com/unidoc/unipdf/v3/extractor";_ag "github.com/unidoc/unipdf/v3/internal/imageutil";
_g "github.com/unidoc/unipdf/v3/internal/textencoding";_eg "github.com/unidoc/unipdf/v3/model";_ac "github.com/unidoc/unitype";_ed "golang.org/x/image/draw";_c "math";_fb "strings";);

// Optimize optimizes PDF objects to decrease PDF size.
func (_bcb *ObjectStreams )Optimize (objects []_fbb .PdfObject )(_ddc []_fbb .PdfObject ,_edg error ){_fecaa :=&_fbb .PdfObjectStreams {};_bdcg :=make ([]_fbb .PdfObject ,0,len (objects ));for _ ,_ddce :=range objects {if _bcd ,_gac :=_ddce .(*_fbb .PdfIndirectObject );
_gac &&_bcd .GenerationNumber ==0{_fecaa .Append (_ddce );}else {_bdcg =append (_bdcg ,_ddce );};};if _fecaa .Len ()==0{return _bdcg ,nil ;};_ddc =make ([]_fbb .PdfObject ,0,len (_bdcg )+_fecaa .Len ()+1);if _fecaa .Len ()> 1{_ddc =append (_ddc ,_fecaa );
};_ddc =append (_ddc ,_fecaa .Elements ()...);_ddc =append (_ddc ,_bdcg ...);return _ddc ,nil ;};

// CombineIdenticalIndirectObjects combines identical indirect objects.
// It implements interface model.Optimizer.
type CombineIdenticalIndirectObjects struct{};

// CleanFonts cleans up embedded fonts, reducing font sizes.
type CleanFonts struct{

// Subset embedded fonts if encountered (if true).
// Otherwise attempts to reduce the font program.
Subset bool ;};func _ecdg (_fefg _fbb .PdfObject )(_ced string ,_cdab []_fbb .PdfObject ){var _ebff _ff .Buffer ;switch _fcce :=_fefg .(type ){case *_fbb .PdfIndirectObject :_cdab =append (_cdab ,_fcce );_fefg =_fcce .PdfObject ;};switch _gcfe :=_fefg .(type ){case *_fbb .PdfObjectStream :if _cgff ,_fca :=_fbb .DecodeStream (_gcfe );
_fca ==nil {_ebff .Write (_cgff );_cdab =append (_cdab ,_gcfe );};case *_fbb .PdfObjectArray :for _ ,_edfb :=range _gcfe .Elements (){switch _dfga :=_edfb .(type ){case *_fbb .PdfObjectStream :if _fdgg ,_ddef :=_fbb .DecodeStream (_dfga );_ddef ==nil {_ebff .Write (_fdgg );
_cdab =append (_cdab ,_dfga );};};};};return _ebff .String (),_cdab ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_eddb *CompressStreams )Optimize (objects []_fbb .PdfObject )(_gbg []_fbb .PdfObject ,_dca error ){_gbg =make ([]_fbb .PdfObject ,len (objects ));copy (_gbg ,objects );for _ ,_fbgb :=range objects {_acee ,_ggb :=_fbb .GetStream (_fbgb );if !_ggb {continue ;
};if _bdbd :=_acee .Get ("\u0046\u0069\u006c\u0074\u0065\u0072");_bdbd !=nil {if _ ,_bfa :=_fbb .GetName (_bdbd );_bfa {continue ;};if _fbe ,_agf :=_fbb .GetArray (_bdbd );_agf &&_fbe .Len ()> 0{continue ;};};_gbe :=_fbb .NewFlateEncoder ();var _gba []byte ;
_gba ,_dca =_gbe .EncodeBytes (_acee .Stream );if _dca !=nil {return _gbg ,_dca ;};_gge :=_gbe .MakeStreamDict ();if len (_gba )+len (_gge .WriteString ())< len (_acee .Stream ){_acee .Stream =_gba ;_acee .PdfObjectDictionary .Merge (_gge );_acee .PdfObjectDictionary .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_fbb .MakeInteger (int64 (len (_acee .Stream ))));
};};return _gbg ,nil ;};func _bad (_dgg _fbb .PdfObject )[]content {if _dgg ==nil {return nil ;};_cgc ,_ggd :=_fbb .GetArray (_dgg );if !_ggd {_f .Log .Debug ("\u0041\u006e\u006e\u006fts\u0020\u006e\u006f\u0074\u0020\u0061\u006e\u0020\u0061\u0072\u0072\u0061\u0079");
return nil ;};var _dga []content ;for _ ,_cggg :=range _cgc .Elements (){_fdg ,_cfc :=_fbb .GetDict (_cggg );if !_cfc {_f .Log .Debug ("I\u0067\u006e\u006f\u0072\u0069\u006eg\u0020\u006e\u006f\u006e\u002d\u0064i\u0063\u0074\u0020\u0065\u006c\u0065\u006de\u006e\u0074\u0020\u0069\u006e\u0020\u0041\u006e\u006e\u006ft\u0073");
continue ;};_def ,_cfc :=_fbb .GetDict (_fdg .Get ("\u0041\u0050"));if !_cfc {_f .Log .Debug ("\u004e\u006f\u0020\u0041P \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_fbg :=_fbb .TraceToDirectObject (_def .Get ("\u004e"));
if _fbg ==nil {_f .Log .Debug ("N\u006f\u0020\u004e\u0020en\u0074r\u0079\u0020\u002d\u0020\u0073k\u0069\u0070\u0070\u0069\u006e\u0067");continue ;};var _bbc *_fbb .PdfObjectStream ;switch _efb :=_fbg .(type ){case *_fbb .PdfObjectDictionary :_egb ,_cbea :=_fbb .GetName (_fdg .Get ("\u0041\u0053"));
if !_cbea {_f .Log .Debug ("\u004e\u006f\u0020\u0041S \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_bbc ,_cbea =_fbb .GetStream (_efb .Get (*_egb ));if !_cbea {_f .Log .Debug ("\u0046o\u0072\u006d\u0020\u006eo\u0074\u0020\u0066\u006f\u0075n\u0064 \u002d \u0073\u006b\u0069\u0070\u0070\u0069\u006eg");
continue ;};case *_fbb .PdfObjectStream :_bbc =_efb ;};if _bbc ==nil {_f .Log .Debug ("\u0046\u006f\u0072m\u0020\u006e\u006f\u0074 \u0066\u006f\u0075\u006e\u0064\u0020\u0028n\u0069\u006c\u0029\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069\u006e\u0067");
continue ;};_afc ,_ace :=_eg .NewXObjectFormFromStream (_bbc );if _ace !=nil {_f .Log .Debug ("\u0045\u0072\u0072\u006f\u0072\u0020l\u006f\u0061\u0064\u0069\u006e\u0067\u0020\u0066\u006f\u0072\u006d\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_ace );
continue ;};_gfe ,_ace :=_afc .GetContentStream ();if _ace !=nil {_f .Log .Debug ("E\u0072\u0072\u006f\u0072\u0020\u0064e\u0063\u006f\u0064\u0069\u006e\u0067\u0020\u0063\u006fn\u0074\u0065\u006et\u0073:\u0020\u0025\u0076",_ace );continue ;};_dga =append (_dga ,content {_fgf :string (_gfe ),_ccg :_afc .Resources });
};return _dga ;};func _fae (_gefc []*_fbb .PdfIndirectObject )map[string ][]string {_ecbd :=map[string ][]string {};for _ ,_ggc :=range _gefc {_cec ,_cbb :=_fbb .GetDict (_ggc .PdfObject );if !_cbb {continue ;};_eccb :=_cec .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073");
_ggae :=_fbb .TraceToDirectObject (_eccb );var _gagg []string ;if _ega ,_dac :=_ggae .(*_fbb .PdfObjectArray );_dac {for _ ,_bdb :=range _ega .Elements (){_eeb ,_aegb :=_bced (_bdb );if _aegb !=nil {continue ;};_gagg =append (_gagg ,_eeb );};};_dfd :=_fb .Join (_gagg ,"\u0020");
_gcfd :=_cg .NewContentStreamParser (_dfd );_cgfc ,_dcd :=_gcfd .Parse ();if _dcd !=nil {continue ;};for _ ,_bafg :=range *_cgfc {_cdb :=_bafg .Operand ;_cefb :=_bafg .Params ;switch _cdb {case "\u0044\u006f":_eeec :=_cefb [0].String ();if _ ,_ccd :=_ecbd ["\u0058O\u0062\u006a\u0065\u0063\u0074"];
!_ccd {_ecbd ["\u0058O\u0062\u006a\u0065\u0063\u0074"]=[]string {_eeec };}else {_ecbd ["\u0058O\u0062\u006a\u0065\u0063\u0074"]=append (_ecbd ["\u0058O\u0062\u006a\u0065\u0063\u0074"],_eeec );};case "\u0054\u0066":_gddg :=_cefb [0].String ();if _ ,_cebc :=_ecbd ["\u0046\u006f\u006e\u0074"];
!_cebc {_ecbd ["\u0046\u006f\u006e\u0074"]=[]string {_gddg };}else {_ecbd ["\u0046\u006f\u006e\u0074"]=append (_ecbd ["\u0046\u006f\u006e\u0074"],_gddg );};case "\u0067\u0073":_dba :=_cefb [0].String ();if _ ,_gaf :=_ecbd ["\u0045x\u0074\u0047\u0053\u0074\u0061\u0074e"];
!_gaf {_ecbd ["\u0045x\u0074\u0047\u0053\u0074\u0061\u0074e"]=[]string {_dba };}else {_ecbd ["\u0045x\u0074\u0047\u0053\u0074\u0061\u0074e"]=append (_ecbd ["\u0045x\u0074\u0047\u0053\u0074\u0061\u0074e"],_dba );};};};};return _ecbd ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_daaa *CombineDuplicateStreams )Optimize (objects []_fbb .PdfObject )(_dbf []_fbb .PdfObject ,_cega error ){_cbdc :=make (map[_fbb .PdfObject ]_fbb .PdfObject );_gega :=make (map[_fbb .PdfObject ]struct{});_gfg :=make (map[string ][]*_fbb .PdfObjectStream );
for _ ,_dgbg :=range objects {if _begc ,_faee :=_dgbg .(*_fbb .PdfObjectStream );_faee {_aff :=_ee .New ();_aff .Write (_begc .Stream );_aff .Write ([]byte (_begc .PdfObjectDictionary .WriteString ()));_aee :=string (_aff .Sum (nil ));_gfg [_aee ]=append (_gfg [_aee ],_begc );
};};for _ ,_bfe :=range _gfg {if len (_bfe )< 2{continue ;};_cebf :=_bfe [0];for _bfea :=1;_bfea < len (_bfe );_bfea ++{_bbfb :=_bfe [_bfea ];_cbdc [_bbfb ]=_cebf ;_gega [_bbfb ]=struct{}{};};};_dbf =make ([]_fbb .PdfObject ,0,len (objects )-len (_gega ));
for _ ,_bbb :=range objects {if _ ,_aega :=_gega [_bbb ];_aega {continue ;};_dbf =append (_dbf ,_bbb );};_ffca (_dbf ,_cbdc );return _dbf ,nil ;};func _cea (_cff string ,_dfg []string )bool {for _ ,_abcge :=range _dfg {if _cff ==_abcge {return true ;};
};return false ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_ebbca *ImagePPI )Optimize (objects []_fbb .PdfObject )(_adcd []_fbb .PdfObject ,_dce error ){if _ebbca .ImageUpperPPI <=0{return objects ,nil ;};_bed :=_abcb (objects );if len (_bed )==0{return objects ,nil ;};_cdba :=make (map[_fbb .PdfObject ]struct{});
for _ ,_afca :=range _bed {_gdf :=_afca .Stream .PdfObjectDictionary .Get ("\u0053\u004d\u0061s\u006b");_cdba [_gdf ]=struct{}{};};_badc :=make (map[*_fbb .PdfObjectStream ]*imageInfo );for _ ,_gfea :=range _bed {_badc [_gfea .Stream ]=_gfea ;};var _dgef *_fbb .PdfObjectDictionary ;
for _ ,_afa :=range objects {if _fgcb ,_dgeg :=_fbb .GetDict (_afa );_dgef ==nil &&_dgeg {if _gcfb ,_agec :=_fbb .GetName (_fgcb .Get ("\u0054\u0079\u0070\u0065"));_agec &&*_gcfb =="\u0043a\u0074\u0061\u006c\u006f\u0067"{_dgef =_fgcb ;};};};if _dgef ==nil {return objects ,nil ;
};_ebc ,_eef :=_fbb .GetDict (_dgef .Get ("\u0050\u0061\u0067e\u0073"));if !_eef {return objects ,nil ;};_cbdf ,_abfg :=_fbb .GetArray (_ebc .Get ("\u004b\u0069\u0064\u0073"));if !_abfg {return objects ,nil ;};for _ ,_cbbb :=range _cbdf .Elements (){_fffc :=make (map[string ]*imageInfo );
_gfb ,_addd :=_fbb .GetDict (_cbbb );if !_addd {continue ;};_ada ,_ :=_ecdg (_gfb .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));if len (_ada )==0{continue ;};_dcbb ,_bafc :=_fbb .GetDict (_gfb .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));
if !_bafc {continue ;};_gabgb ,_bac :=_eg .NewPdfPageResourcesFromDict (_dcbb );if _bac !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020\u0070\u0061\u0072\u0073\u0069\u006e\u0067\u0020\u0072\u0065\u0073\u006f\u0075\u0072\u0063\u0065\u0073\u0020-\u0020\u0069\u0067\u006e\u006fr\u0069\u006eg\u003a\u0020\u0025\u0076",_bac );
continue ;};_geff ,_dbbc :=_fbb .GetDict (_dcbb .Get ("\u0058O\u0062\u006a\u0065\u0063\u0074"));if !_dbbc {continue ;};_fdb :=_geff .Keys ();for _ ,_beab :=range _fdb {if _dcee ,_gegc :=_fbb .GetStream (_geff .Get (_beab ));_gegc {if _feg ,_fgdf :=_badc [_dcee ];
_fgdf {_fffc [string (_beab )]=_feg ;};};};_aade :=_cg .NewContentStreamParser (_ada );_bdc ,_bac :=_aade .Parse ();if _bac !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_bac );continue ;};_cgcb :=_cg .NewContentStreamProcessor (*_bdc );
_cgcb .AddHandler (_cg .HandlerConditionEnumAllOperands ,"",func (_gae *_cg .ContentStreamOperation ,_abd _cg .GraphicsState ,_cege *_eg .PdfPageResources )error {switch _gae .Operand {case "\u0044\u006f":if len (_gae .Params )!=1{_f .Log .Debug ("E\u0052\u0052\u004f\u0052\u003a\u0020\u0049\u0067\u006e\u006f\u0072\u0069\u006e\u0067\u0020\u0044\u006f\u0020w\u0069\u0074\u0068\u0020\u006c\u0065\u006e\u0028\u0070\u0061ra\u006d\u0073\u0029 \u0021=\u0020\u0031");
return nil ;};_gbgc ,_eaa :=_fbb .GetName (_gae .Params [0]);if !_eaa {_f .Log .Debug ("\u0045\u0052\u0052O\u0052\u003a\u0020\u0049\u0067\u006e\u006f\u0072\u0069\u006e\u0067\u0020\u0044\u006f\u0020\u0077\u0069\u0074\u0068\u0020\u006e\u006f\u006e\u0020\u004e\u0061\u006d\u0065\u0020p\u0061\u0072\u0061\u006d\u0065\u0074\u0065\u0072");
return nil ;};if _feca ,_gcb :=_fffc [string (*_gbgc )];_gcb {_dea :=_abd .CTM .ScalingFactorX ();_eab :=_abd .CTM .ScalingFactorY ();_gggd ,_gdba :=_dea /72.0,_eab /72.0;_daac ,_bcgb :=float64 (_feca .Width )/_gggd ,float64 (_feca .Height )/_gdba ;if _gggd ==0||_gdba ==0{_daac =72.0;
_bcgb =72.0;};_feca .PPI =_c .Max (_feca .PPI ,_daac );_feca .PPI =_c .Max (_feca .PPI ,_bcgb );};};return nil ;});_bac =_cgcb .Process (_gabgb );if _bac !=nil {_f .Log .Debug ("E\u0052\u0052\u004f\u0052 p\u0072o\u0063\u0065\u0073\u0073\u0069n\u0067\u003a\u0020\u0025\u002b\u0076",_bac );
continue ;};};for _ ,_gefgc :=range _bed {if _ ,_ecd :=_cdba [_gefgc .Stream ];_ecd {continue ;};if _gefgc .PPI <=_ebbca .ImageUpperPPI {continue ;};_ebgf ,_fadb :=_eg .NewXObjectImageFromStream (_gefgc .Stream );if _fadb !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_fadb );
continue ;};var _fcba imageModifications ;_fcba .Scale =_ebbca .ImageUpperPPI /_gefgc .PPI ;if _gefgc .BitsPerComponent ==1&&_gefgc .ColorComponents ==1{_ebbd :=_c .Round (_gefgc .PPI /_ebbca .ImageUpperPPI );_cfbeb :=_ag .NextPowerOf2 (uint (_ebbd ));
if _ag .InDelta (float64 (_cfbeb ),1/_fcba .Scale ,0.3){_fcba .Scale =float64 (1)/float64 (_cfbeb );};if _ ,_gaga :=_ebgf .Filter .(*_fbb .JBIG2Encoder );!_gaga {_fcba .Encoding =_fbb .NewJBIG2Encoder ();};};if _fadb =_gddd (_ebgf ,_fcba );_fadb !=nil {_f .Log .Debug ("\u0045\u0072\u0072\u006f\u0072 \u0073\u0063\u0061\u006c\u0065\u0020\u0069\u006d\u0061\u0067\u0065\u0020\u006be\u0065\u0070\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u0069\u006d\u0061\u0067\u0065\u003a\u0020\u0025\u0073",_fadb );
continue ;};_fcba .Encoding =nil ;if _edb ,_begcd :=_fbb .GetStream (_gefgc .Stream .PdfObjectDictionary .Get ("\u0053\u004d\u0061s\u006b"));_begcd {_cgb ,_cbc :=_eg .NewXObjectImageFromStream (_edb );if _cbc !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_cbc );
continue ;};if _cbc =_gddd (_cgb ,_fcba );_cbc !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_cbc );continue ;};};};return objects ,nil ;};func _abcb (_fcb []_fbb .PdfObject )[]*imageInfo {_cfbe :=_fbb .PdfObjectName ("\u0053u\u0062\u0074\u0079\u0070\u0065");
_bdbda :=make (map[*_fbb .PdfObjectStream ]struct{});var _gcegg []*imageInfo ;for _ ,_fcg :=range _fcb {_ffc ,_dbc :=_fbb .GetStream (_fcg );if !_dbc {continue ;};if _ ,_agdb :=_bdbda [_ffc ];_agdb {continue ;};_bdbda [_ffc ]=struct{}{};_gfec :=_ffc .PdfObjectDictionary .Get (_cfbe );
_gbgf ,_dbc :=_fbb .GetName (_gfec );if !_dbc ||string (*_gbgf )!="\u0049\u006d\u0061g\u0065"{continue ;};_bff :=&imageInfo {Stream :_ffc ,BitsPerComponent :8};if _bec ,_aede :=_fbb .GetIntVal (_ffc .Get ("\u0042\u0069t\u0073\u0050\u0065r\u0043\u006f\u006d\u0070\u006f\u006e\u0065\u006e\u0074"));
_aede {_bff .BitsPerComponent =_bec ;};if _affg ,_gbgg :=_fbb .GetIntVal (_ffc .Get ("\u0057\u0069\u0064t\u0068"));_gbgg {_bff .Width =_affg ;};if _bece ,_ded :=_fbb .GetIntVal (_ffc .Get ("\u0048\u0065\u0069\u0067\u0068\u0074"));_ded {_bff .Height =_bece ;
};_cca ,_aad :=_eg .NewPdfColorspaceFromPdfObject (_ffc .Get ("\u0043\u006f\u006c\u006f\u0072\u0053\u0070\u0061\u0063\u0065"));if _aad !=nil {_f .Log .Debug ("\u0045R\u0052\u004f\u0052\u003a\u0020\u0025v",_aad );continue ;};if _cca ==nil {_acggb ,_adc :=_fbb .GetName (_ffc .Get ("\u0046\u0069\u006c\u0074\u0065\u0072"));
if _adc {switch _acggb .String (){case "\u0043\u0043\u0049\u0054\u0054\u0046\u0061\u0078\u0044e\u0063\u006f\u0064\u0065","J\u0042\u0049\u0047\u0032\u0044\u0065\u0063\u006f\u0064\u0065":_cca =_eg .NewPdfColorspaceDeviceGray ();_bff .BitsPerComponent =1;
};};};switch _cefd :=_cca .(type ){case *_eg .PdfColorspaceDeviceRGB :_bff .ColorComponents =3;case *_eg .PdfColorspaceDeviceGray :_bff .ColorComponents =1;default:_f .Log .Debug ("\u004f\u0070\u0074\u0069\u006d\u0069\u007aa\u0074\u0069\u006fn\u0020\u0069\u0073 \u006e\u006ft\u0020\u0073\u0075\u0070\u0070\u006fr\u0074ed\u0020\u0066\u006f\u0072\u0020\u0063\u006f\u006c\u006f\u0072\u0020\u0073\u0070\u0061\u0063\u0065\u0020\u0025\u0054\u0020\u002d\u0020\u0073\u006b\u0069\u0070",_cefd );
continue ;};_gcegg =append (_gcegg ,_bff );};return _gcegg ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_ecbf *Image )Optimize (objects []_fbb .PdfObject )(_cdf []_fbb .PdfObject ,_baff error ){if _ecbf .ImageQuality <=0{return objects ,nil ;};_bgac :=_abcb (objects );if len (_bgac )==0{return objects ,nil ;};_cgcg :=make (map[_fbb .PdfObject ]_fbb .PdfObject );
_ggbc :=make (map[_fbb .PdfObject ]struct{});for _ ,_dedc :=range _bgac {_dfb :=_dedc .Stream .Get ("\u0053\u004d\u0061s\u006b");_ggbc [_dfb ]=struct{}{};};for _cegg ,_dbcb :=range _bgac {_ddbb :=_dbcb .Stream ;if _ ,_cba :=_ggbc [_ddbb ];_cba {continue ;
};_dbca ,_gefg :=_eg .NewXObjectImageFromStream (_ddbb );if _gefg !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_gefg );continue ;};switch _dbca .Filter .(type ){case *_fbb .JBIG2Encoder :continue ;case *_fbb .CCITTFaxEncoder :continue ;
};_cfbg ,_gefg :=_dbca .ToImage ();if _gefg !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_gefg );continue ;};_ffcg :=_fbb .NewDCTEncoder ();_ffcg .ColorComponents =_cfbg .ColorComponents ;_ffcg .Quality =_ecbf .ImageQuality ;
_ffcg .BitsPerComponent =_dbcb .BitsPerComponent ;_ffcg .Width =_dbcb .Width ;_ffcg .Height =_dbcb .Height ;_bggb ,_gefg :=_ffcg .EncodeBytes (_cfbg .Data );if _gefg !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_gefg );
continue ;};var _gede _fbb .StreamEncoder ;_gede =_ffcg ;{_bdg :=_fbb .NewFlateEncoder ();_bebc :=_fbb .NewMultiEncoder ();_bebc .AddEncoder (_bdg );_bebc .AddEncoder (_ffcg );_fgea ,_dgec :=_bebc .EncodeBytes (_cfbg .Data );if _dgec !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_dgec );
continue ;};if len (_fgea )< len (_bggb ){_f .Log .Trace ("\u004d\u0075\u006c\u0074\u0069\u0020\u0065\u006e\u0063\u0020\u0069\u006d\u0070\u0072\u006f\u0076\u0065\u0073\u003a\u0020\u0025\u0064\u0020\u0074o\u0020\u0025\u0064\u0020\u0028o\u0072\u0069g\u0020\u0025\u0064\u0029",len (_bggb ),len (_fgea ),len (_ddbb .Stream ));
_bggb =_fgea ;_gede =_bebc ;};};_fbbb :=len (_ddbb .Stream );if _fbbb < len (_bggb ){continue ;};_ffdf :=&_fbb .PdfObjectStream {Stream :_bggb };_ffdf .PdfObjectReference =_ddbb .PdfObjectReference ;_ffdf .PdfObjectDictionary =_fbb .MakeDict ();_ffdf .Merge (_ddbb .PdfObjectDictionary );
_ffdf .Merge (_gede .MakeStreamDict ());_ffdf .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_fbb .MakeInteger (int64 (len (_bggb ))));_cgcg [_ddbb ]=_ffdf ;_bgac [_cegg ].Stream =_ffdf ;};_cdf =make ([]_fbb .PdfObject ,len (objects ));copy (_cdf ,objects );
_ffca (_cdf ,_cgcg );return _cdf ,nil ;};func _bgae (_agfd []_fbb .PdfObject ){for _dgba ,_ggbcf :=range _agfd {switch _ddba :=_ggbcf .(type ){case *_fbb .PdfIndirectObject :_ddba .ObjectNumber =int64 (_dgba +1);_ddba .GenerationNumber =0;case *_fbb .PdfObjectStream :_ddba .ObjectNumber =int64 (_dgba +1);
_ddba .GenerationNumber =0;case *_fbb .PdfObjectStreams :_ddba .ObjectNumber =int64 (_dgba +1);_ddba .GenerationNumber =0;};};};func _ffca (_agdea []_fbb .PdfObject ,_bdbg map[_fbb .PdfObject ]_fbb .PdfObject ){if len (_bdbg )==0{return ;};for _bgag ,_aegc :=range _agdea {if _bdd ,_dad :=_bdbg [_aegc ];
_dad {_agdea [_bgag ]=_bdd ;continue ;};_bdbg [_aegc ]=_aegc ;switch _fed :=_aegc .(type ){case *_fbb .PdfObjectArray :_dgdf :=make ([]_fbb .PdfObject ,_fed .Len ());copy (_dgdf ,_fed .Elements ());_ffca (_dgdf ,_bdbg );for _dfbg ,_adb :=range _dgdf {_fed .Set (_dfbg ,_adb );
};case *_fbb .PdfObjectStreams :_ffca (_fed .Elements (),_bdbg );case *_fbb .PdfObjectStream :_bcc :=[]_fbb .PdfObject {_fed .PdfObjectDictionary };_ffca (_bcc ,_bdbg );_fed .PdfObjectDictionary =_bcc [0].(*_fbb .PdfObjectDictionary );case *_fbb .PdfObjectDictionary :_bbce :=_fed .Keys ();
_cegb :=make ([]_fbb .PdfObject ,len (_bbce ));for _bbe ,_daag :=range _bbce {_cegb [_bbe ]=_fed .Get (_daag );};_ffca (_cegb ,_bdbg );for _cagff ,_gcgc :=range _bbce {_fed .Set (_gcgc ,_cegb [_cagff ]);};case *_fbb .PdfIndirectObject :_bfaf :=[]_fbb .PdfObject {_fed .PdfObject };
_ffca (_bfaf ,_bdbg );_fed .PdfObject =_bfaf [0];};};};func _bced (_cfcc _fbb .PdfObject )(string ,error ){_ddgg :=_fbb .TraceToDirectObject (_cfcc );switch _abe :=_ddgg .(type ){case *_fbb .PdfObjectString :return _abe .Str (),nil ;case *_fbb .PdfObjectStream :_fec ,_gea :=_fbb .DecodeStream (_abe );
if _gea !=nil {return "",_gea ;};return string (_fec ),nil ;};return "",_a .Errorf ("\u0069\u006e\u0076\u0061\u006ci\u0064\u0020\u0063\u006f\u006e\u0074\u0065\u006e\u0074\u0020\u0073\u0074\u0072e\u0061\u006d\u0020\u006f\u0062\u006a\u0065\u0063\u0074\u0020\u0068\u006f\u006c\u0064\u0065\u0072\u0020\u0028\u0025\u0054\u0029",_ddgg );
};

// ObjectStreams groups PDF objects to object streams.
// It implements interface model.Optimizer.
type ObjectStreams struct{};

// Optimize optimizes PDF objects to decrease PDF size.
func (_gc *Chain )Optimize (objects []_fbb .PdfObject )(_gec []_fbb .PdfObject ,_ga error ){_eb :=objects ;for _ ,_bc :=range _gc ._ad {_d ,_age :=_bc .Optimize (_eb );if _age !=nil {_f .Log .Debug ("\u0045\u0052\u0052OR\u0020\u004f\u0070\u0074\u0069\u006d\u0069\u007a\u0061\u0074\u0069\u006f\u006e\u003a\u0020\u0025\u002b\u0076",_age );
continue ;};_eb =_d ;};return _eb ,nil ;};

// Image optimizes images by rewrite images into JPEG format with quality equals to ImageQuality.
// TODO(a5i): Add support for inline images.
// It implements interface model.Optimizer.
type Image struct{ImageQuality int ;};

// CombineDuplicateStreams combines duplicated streams by its data hash.
// It implements interface model.Optimizer.
type CombineDuplicateStreams struct{};

// Optimize optimizes PDF objects to decrease PDF size.
func (_acgd *CombineDuplicateDirectObjects )Optimize (objects []_fbb .PdfObject )(_gda []_fbb .PdfObject ,_edcg error ){_bgae (objects );_bea :=make (map[string ][]*_fbb .PdfObjectDictionary );var _caa func (_dbg *_fbb .PdfObjectDictionary );_caa =func (_dfag *_fbb .PdfObjectDictionary ){for _ ,_ebgc :=range _dfag .Keys (){_fded :=_dfag .Get (_ebgc );
if _dbb ,_fge :=_fded .(*_fbb .PdfObjectDictionary );_fge {_cdbb :=_ee .New ();_cdbb .Write ([]byte (_dbb .WriteString ()));_ddbe :=string (_cdbb .Sum (nil ));_bea [_ddbe ]=append (_bea [_ddbe ],_dbb );_caa (_dbb );};};};for _ ,_cbbe :=range objects {_gff ,_aec :=_cbbe .(*_fbb .PdfIndirectObject );
if !_aec {continue ;};if _fcc ,_fdce :=_gff .PdfObject .(*_fbb .PdfObjectDictionary );_fdce {_caa (_fcc );};};_fdgc :=make ([]_fbb .PdfObject ,0,len (_bea ));_bdba :=make (map[_fbb .PdfObject ]_fbb .PdfObject );for _ ,_fgfc :=range _bea {if len (_fgfc )< 2{continue ;
};_aed :=_fbb .MakeDict ();_aed .Merge (_fgfc [0]);_dfe :=_fbb .MakeIndirectObject (_aed );_fdgc =append (_fdgc ,_dfe );for _aaf :=0;_aaf < len (_fgfc );_aaf ++{_fea :=_fgfc [_aaf ];_bdba [_fea ]=_dfe ;};};_gda =make ([]_fbb .PdfObject ,len (objects ));
copy (_gda ,objects );_gda =append (_fdgc ,_gda ...);_ffca (_gda ,_bdba );return _gda ,nil ;};

// Append appends optimizers to the chain.
func (_ge *Chain )Append (optimizers ..._eg .Optimizer ){_ge ._ad =append (_ge ._ad ,optimizers ...)};func _gddd (_fce *_eg .XObjectImage ,_cdd imageModifications )error {_fead ,_efa :=_fce .ToImage ();if _efa !=nil {return _efa ;};if _cdd .Scale !=0{_fead ,_efa =_aecg (_fead ,_cdd .Scale );
if _efa !=nil {return _efa ;};};if _cdd .Encoding !=nil {_fce .Filter =_cdd .Encoding ;};_fce .Decode =nil ;switch _gefae :=_fce .Filter .(type ){case *_fbb .FlateEncoder :if _gefae .Predictor !=1&&_gefae .Predictor !=11{_gefae .Predictor =1;};};if _efa =_fce .SetImage (_fead ,nil );
_efa !=nil {_f .Log .Debug ("\u0045\u0072\u0072or\u0020\u0073\u0065\u0074\u0074\u0069\u006e\u0067\u0020\u0069\u006d\u0061\u0067\u0065\u003a\u0020\u0025\u0076",_efa );return _efa ;};_fce .ToPdfObject ();return nil ;};func _ebf (_acb *_fbb .PdfObjectDictionary )[]string {_gabf :=[]string {};
for _ ,_ebfg :=range _acb .Keys (){_gabf =append (_gabf ,_ebfg .String ());};return _gabf ;};type imageInfo struct{BitsPerComponent int ;ColorComponents int ;Width int ;Height int ;Stream *_fbb .PdfObjectStream ;PPI float64 ;};func _aab (_ceb []_fbb .PdfObject )(_baf map[*_fbb .PdfObjectStream ]struct{},_dag error ){_baf =map[*_fbb .PdfObjectStream ]struct{}{};
_adf :=map[*_eg .PdfFont ]struct{}{};_ddb :=_gcga (_ceb );for _ ,_abc :=range _ddb ._fba {_bgb ,_cfbb :=_fbb .GetDict (_abc .PdfObject );if !_cfbb {continue ;};_cce ,_cfbb :=_fbb .GetDict (_bgb .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));if !_cfbb {continue ;
};_geg ,_ :=_ecdg (_bgb .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_cge ,_eac :=_eg .NewPdfPageResourcesFromDict (_cce );if _eac !=nil {return nil ,_eac ;};_ffa :=[]content {{_fgf :_geg ,_ccg :_cge }};_fbd :=_bad (_bgb .Get ("\u0041\u006e\u006e\u006f\u0074\u0073"));
if _fbd !=nil {_ffa =append (_ffa ,_fbd ...);};for _ ,_bgbg :=range _ffa {_ddde ,_ddf :=_b .NewFromContents (_bgbg ._fgf ,_bgbg ._ccg );if _ddf !=nil {return nil ,_ddf ;};_efd ,_ ,_ ,_ddf :=_ddde .ExtractPageText ();if _ddf !=nil {return nil ,_ddf ;};for _ ,_fgbd :=range _efd .Marks ().Elements (){if _fgbd .Font ==nil {continue ;
};if _ ,_gef :=_adf [_fgbd .Font ];!_gef {_adf [_fgbd .Font ]=struct{}{};};};};};_eced :=map[*_fbb .PdfObjectStream ][]*_eg .PdfFont {};for _beb :=range _adf {_fbfe :=_beb .FontDescriptor ();if _fbfe ==nil ||_fbfe .FontFile2 ==nil {continue ;};_dgb ,_acgg :=_fbb .GetStream (_fbfe .FontFile2 );
if !_acgg {continue ;};_eced [_dgb ]=append (_eced [_dgb ],_beb );};for _bef :=range _eced {var _dee []rune ;var _gdb []_ac .GlyphIndex ;for _ ,_agc :=range _eced [_bef ]{switch _acf :=_agc .Encoder ().(type ){case *_g .IdentityEncoder :_cfbc :=_acf .RegisteredRunes ();
_abf :=make ([]_ac .GlyphIndex ,len (_cfbc ));for _bce ,_fdd :=range _cfbc {_abf [_bce ]=_ac .GlyphIndex (_fdd );};_gdb =append (_gdb ,_abf ...);case *_g .TrueTypeFontEncoder :_ggg :=_acf .RegisteredRunes ();_dee =append (_dee ,_ggg ...);case _g .SimpleEncoder :_fbfed :=_acf .Charcodes ();
for _ ,_ddfb :=range _fbfed {_faga ,_gefa :=_acf .CharcodeToRune (_ddfb );if !_gefa {_f .Log .Debug ("\u0043\u0068a\u0072\u0063\u006f\u0064\u0065\u003c\u002d\u003e\u0072\u0075\u006e\u0065\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064: \u0025\u0064",_ddfb );
continue ;};_dee =append (_dee ,_faga );};};};_dag =_cgae (_bef ,_dee ,_gdb );if _dag !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020\u0073\u0075\u0062\u0073\u0065\u0074\u0074\u0069\u006eg\u0020f\u006f\u006e\u0074\u0020\u0073\u0074\u0072\u0065\u0061\u006d\u003a\u0020\u0025\u0076",_dag );
return nil ,_dag ;};_baf [_bef ]=struct{}{};};return _baf ,nil ;};

// ImagePPI optimizes images by scaling images such that the PPI (pixels per inch) is never higher than ImageUpperPPI.
// TODO(a5i): Add support for inline images.
// It implements interface model.Optimizer.
type ImagePPI struct{ImageUpperPPI float64 ;};

// New creates a optimizers chain from options.
func New (options Options )*Chain {_bfeb :=new (Chain );if options .CleanFonts ||options .SubsetFonts {_bfeb .Append (&CleanFonts {Subset :options .SubsetFonts });};if options .CleanContentstream {_bfeb .Append (new (CleanContentstream ));};if options .ImageUpperPPI > 0{_bgdb :=new (ImagePPI );
_bgdb .ImageUpperPPI =options .ImageUpperPPI ;_bfeb .Append (_bgdb );};if options .ImageQuality > 0{_eaf :=new (Image );_eaf .ImageQuality =options .ImageQuality ;_bfeb .Append (_eaf );};if options .CombineDuplicateDirectObjects {_bfeb .Append (new (CombineDuplicateDirectObjects ));
};if options .CombineDuplicateStreams {_bfeb .Append (new (CombineDuplicateStreams ));};if options .CombineIdenticalIndirectObjects {_bfeb .Append (new (CombineIdenticalIndirectObjects ));};if options .UseObjectStreams {_bfeb .Append (new (ObjectStreams ));
};if options .CompressStreams {_bfeb .Append (new (CompressStreams ));};if options .CleanUnusedResources {_bfeb .Append (new (CleanUnusedResources ));};return _bfeb ;};

// CompressStreams compresses uncompressed streams.
// It implements interface model.Optimizer.
type CompressStreams struct{};

// GetOptimizers gets the list of optimizers in chain `c`.
func (_fbf *Chain )GetOptimizers ()[]_eg .Optimizer {return _fbf ._ad };func _aeb (_ccgf _fbb .PdfObject ,_gcg map[_fbb .PdfObject ]struct{})error {if _ebg ,_cfea :=_ccgf .(*_fbb .PdfIndirectObject );_cfea {_gcg [_ccgf ]=struct{}{};_gcd :=_aeb (_ebg .PdfObject ,_gcg );
if _gcd !=nil {return _gcd ;};return nil ;};if _aefg ,_bga :=_ccgf .(*_fbb .PdfObjectStream );_bga {_gcg [_aefg ]=struct{}{};_acdd :=_aeb (_aefg .PdfObjectDictionary ,_gcg );if _acdd !=nil {return _acdd ;};return nil ;};if _dagf ,_bgd :=_ccgf .(*_fbb .PdfObjectDictionary );
_bgd {for _ ,_efgd :=range _dagf .Keys (){_beg :=_dagf .Get (_efgd );_ =_beg ;if _fcf ,_fad :=_beg .(*_fbb .PdfObjectReference );_fad {_beg =_fcf .Resolve ();_dagf .Set (_efgd ,_beg );};if _efgd !="\u0050\u0061\u0072\u0065\u006e\u0074"{if _dge :=_aeb (_beg ,_gcg );
_dge !=nil {return _dge ;};};};return nil ;};if _aefgg ,_dddee :=_ccgf .(*_fbb .PdfObjectArray );_dddee {if _aefgg ==nil {return _bb .New ("\u0061\u0072\u0072a\u0079\u0020\u0069\u0073\u0020\u006e\u0069\u006c");};for _edd ,_fgac :=range _aefgg .Elements (){if _egcd ,_ege :=_fgac .(*_fbb .PdfObjectReference );
_ege {_fgac =_egcd .Resolve ();_aefgg .Set (_edd ,_fgac );};if _cbg :=_aeb (_fgac ,_gcg );_cbg !=nil {return _cbg ;};};return nil ;};return nil ;};

// CleanContentstream cleans up redundant operands in content streams, including Page and XObject Form
// contents. This process includes:
// 1. Marked content operators are removed.
// 2. Some operands are simplified (shorter form).
// TODO: Add more reduction methods and improving the methods for identifying unnecessary operands.
type CleanContentstream struct{};func _acg (_ba *_cg .ContentStreamOperations )*_cg .ContentStreamOperations {if _ba ==nil {return nil ;};_ebd :=_cg .ContentStreamOperations {};for _ ,_cf :=range *_ba {switch _cf .Operand {case "\u0042\u0044\u0043","\u0042\u004d\u0043","\u0045\u004d\u0043":continue ;
case "\u0054\u006d":if len (_cf .Params )==6{if _dd ,_ddd :=_fbb .GetNumbersAsFloat (_cf .Params );_ddd ==nil {if _dd [0]==1&&_dd [1]==0&&_dd [2]==0&&_dd [3]==1{_cf =&_cg .ContentStreamOperation {Params :[]_fbb .PdfObject {_cf .Params [4],_cf .Params [5]},Operand :"\u0054\u0064"};
};};};};_ebd =append (_ebd ,_cf );};return &_ebd ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_deg *CleanFonts )Optimize (objects []_fbb .PdfObject )(_ffe []_fbb .PdfObject ,_dcg error ){var _ddg map[*_fbb .PdfObjectStream ]struct{};if _deg .Subset {var _dgbc error ;_ddg ,_dgbc =_aab (objects );if _dgbc !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004fR\u003a\u0020\u0046\u0061\u0069\u006c\u0065\u0064\u0020\u0073u\u0062s\u0065\u0074\u0074\u0069\u006e\u0067\u003a \u0025\u0076",_dgbc );
return nil ,_dgbc ;};};for _ ,_bf :=range objects {_fagd ,_edc :=_fbb .GetStream (_bf );if !_edc {continue ;};if _ ,_gceg :=_ddg [_fagd ];_gceg {continue ;};_df ,_aef :=_fbb .NewEncoderFromStream (_fagd );if _aef !=nil {_f .Log .Debug ("\u0045\u0052RO\u0052\u0020\u0067e\u0074\u0074\u0069\u006eg e\u006eco\u0064\u0065\u0072\u003a\u0020\u0025\u0076 -\u0020\u0069\u0067\u006e\u006f\u0072\u0069n\u0067",_aef );
continue ;};_fcd ,_aef :=_df .DecodeStream (_fagd );if _aef !=nil {_f .Log .Debug ("\u0044\u0065\u0063\u006f\u0064\u0069\u006e\u0067\u0020\u0065r\u0072\u006f\u0072\u0020\u003a\u0020\u0025v\u0020\u002d\u0020\u0069\u0067\u006e\u006f\u0072\u0069\u006e\u0067",_aef );
continue ;};if len (_fcd )< 4{continue ;};_cbd :=string (_fcd [:4]);if _cbd =="\u004f\u0054\u0054\u004f"{continue ;};if _cbd !="\u0000\u0001\u0000\u0000"&&_cbd !="\u0074\u0072\u0075\u0065"{continue ;};_gedd ,_aef :=_ac .Parse (_ff .NewReader (_fcd ));if _aef !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020P\u0061\u0072\u0073\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_aef );
continue ;};_aef =_gedd .Optimize ();if _aef !=nil {_f .Log .Debug ("\u0045\u0052RO\u0052\u0020\u004fp\u0074\u0069\u006d\u0069zin\u0067 f\u006f\u006e\u0074\u003a\u0020\u0025\u0076 -\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067",_aef );continue ;};var _gdc _ff .Buffer ;
_aef =_gedd .Write (&_gdc );if _aef !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u0020W\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076\u0020\u002d\u0020\u0069\u0067\u006eo\u0072\u0069\u006e\u0067",_aef );
continue ;};if _gdc .Len ()> len (_fcd ){_f .Log .Debug ("\u0052\u0065-\u0077\u0072\u0069\u0074\u0074\u0065\u006e\u0020\u0066\u006f\u006e\u0074\u0020\u0069\u0073\u0020\u006c\u0061\u0072\u0067\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u002d\u0020\u0073\u006b\u0069\u0070");
continue ;};_afe ,_aef :=_fbb .MakeStream (_gdc .Bytes (),_fbb .NewFlateEncoder ());if _aef !=nil {continue ;};*_fagd =*_afe ;_fagd .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_fbb .MakeInteger (int64 (_gdc .Len ())));};return objects ,nil ;};

// Options describes PDF optimization parameters.
type Options struct{CombineDuplicateStreams bool ;CombineDuplicateDirectObjects bool ;ImageUpperPPI float64 ;ImageQuality int ;UseObjectStreams bool ;CombineIdenticalIndirectObjects bool ;CompressStreams bool ;CleanFonts bool ;SubsetFonts bool ;CleanContentstream bool ;
CleanUnusedResources bool ;};func _gcf (_cag []_fbb .PdfObject )(map[_fbb .PdfObject ]struct{},error ){_fde :=_gcga (_cag );_fdde :=_fde ._fba ;_gcef :=make (map[_fbb .PdfObject ]struct{});_eee :=_fae (_fdde );for _ ,_aaga :=range _fdde {_faf ,_bbf :=_fbb .GetDict (_aaga .PdfObject );
if !_bbf {continue ;};_cagf ,_bbf :=_fbb .GetDict (_faf .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));if !_bbf {continue ;};_cda :=_eee ["\u0058O\u0062\u006a\u0065\u0063\u0074"];_edf ,_bbf :=_fbb .GetDict (_cagf .Get ("\u0058O\u0062\u006a\u0065\u0063\u0074"));
if _bbf {_gga :=_ebf (_edf );for _ ,_gaag :=range _gga {if _cea (_gaag ,_cda ){continue ;};_aba :=*_fbb .MakeName (_gaag );_fga :=_edf .Get (_aba );_gcef [_fga ]=struct{}{};_edf .Remove (_aba );_acca :=_aeb (_fga ,_gcef );if _acca !=nil {_f .Log .Debug ("\u0066\u0061\u0069\u006ce\u0064\u0020\u0074\u006f\u0020\u0074\u0072\u0061\u0076\u0065r\u0073e\u0020\u006f\u0062\u006a\u0065\u0063\u0074 \u0025\u0076",_fga );
};};};_cgf ,_bbf :=_fbb .GetDict (_cagf .Get ("\u0046\u006f\u006e\u0074"));_agb :=_eee ["\u0046\u006f\u006e\u0074"];if _bbf {_cfgc :=_ebf (_cgf );for _ ,_cef :=range _cfgc {if _cea (_cef ,_agb ){continue ;};_fef :=*_fbb .MakeName (_cef );_gece :=_cgf .Get (_fef );
_gcef [_gece ]=struct{}{};_cgf .Remove (_fef );_dfa :=_aeb (_gece ,_gcef );if _dfa !=nil {_f .Log .Debug ("\u0046\u0061i\u006c\u0065\u0064\u0020\u0074\u006f\u0020\u0074\u0072\u0061\u0076\u0065\u0072\u0073\u0065\u0020\u006f\u0062\u006a\u0065\u0063\u0074 %\u0076\u000a",_gece );
};};};_ddfc ,_bbf :=_fbb .GetDict (_cagf .Get ("\u0045x\u0074\u0047\u0053\u0074\u0061\u0074e"));if _bbf {_fafg :=_ebf (_ddfc );_afb :=_eee ["\u0045x\u0074\u0047\u0053\u0074\u0061\u0074e"];for _ ,_dgf :=range _fafg {if _cea (_dgf ,_afb ){continue ;};_ffd :=*_fbb .MakeName (_dgf );
_afd :=_ddfc .Get (_ffd );_gcef [_afd ]=struct{}{};_ddfc .Remove (_ffd );_feb :=_aeb (_afd ,_gcef );if _feb !=nil {_f .Log .Debug ("\u0066\u0061i\u006c\u0065\u0064\u0020\u0074\u006f\u0020\u0074\u0072\u0061\u0076\u0065\u0072\u0073\u0065\u0020\u006f\u0062\u006a\u0065\u0063\u0074 %\u0076\u000a",_afd );
};};};};return _gcef ,nil ;};

// Optimize implements Optimizer interface.
func (_eeae *CleanUnusedResources )Optimize (objects []_fbb .PdfObject )(_acc []_fbb .PdfObject ,_gdde error ){_daa ,_gdde :=_gcf (objects );if _gdde !=nil {return nil ,_gdde ;};_cd :=[]_fbb .PdfObject {};for _ ,_aae :=range objects {_ ,_agd :=_daa [_aae ];
if _agd {continue ;};_cd =append (_cd ,_aae );};return _cd ,nil ;};type objectStructure struct{_bccf *_fbb .PdfObjectDictionary ;_bbcee *_fbb .PdfObjectDictionary ;_fba []*_fbb .PdfIndirectObject ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_gd *CleanContentstream )Optimize (objects []_fbb .PdfObject )(_db []_fbb .PdfObject ,_ffb error ){_geb :=map[*_fbb .PdfObjectStream ]struct{}{};var _ade []*_fbb .PdfObjectStream ;_fdc :=func (_gcea *_fbb .PdfObjectStream ){if _ ,_baa :=_geb [_gcea ];
!_baa {_geb [_gcea ]=struct{}{};_ade =append (_ade ,_gcea );};};_cga :=map[_fbb .PdfObject ]bool {};_aa :=map[_fbb .PdfObject ]bool {};for _ ,_ef :=range objects {switch _ea :=_ef .(type ){case *_fbb .PdfIndirectObject :switch _gag :=_ea .PdfObject .(type ){case *_fbb .PdfObjectDictionary :if _cfd ,_ged :=_fbb .GetName (_gag .Get ("\u0054\u0079\u0070\u0065"));
!_ged ||_cfd .String ()!="\u0050\u0061\u0067\u0065"{continue ;};if _eba ,_bg :=_fbb .GetStream (_gag .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_bg {_fdc (_eba );}else if _aag ,_geba :=_fbb .GetArray (_gag .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));
_geba {var _dcf []*_fbb .PdfObjectStream ;for _ ,_fbc :=range _aag .Elements (){if _be ,_gg :=_fbb .GetStream (_fbc );_gg {_dcf =append (_dcf ,_be );};};if len (_dcf )> 0{var _fa _ff .Buffer ;for _ ,_fag :=range _dcf {if _fc ,_cfg :=_fbb .DecodeStream (_fag );
_cfg ==nil {_fa .Write (_fc );};_cga [_fag ]=true ;};_fgb ,_ece :=_fbb .MakeStream (_fa .Bytes (),_fbb .NewFlateEncoder ());if _ece !=nil {return nil ,_ece ;};_aa [_fgb ]=true ;_gag .Set ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073",_fgb );_fdc (_fgb );
};};};case *_fbb .PdfObjectStream :if _fbbe ,_eea :=_fbb .GetName (_ea .Get ("\u0054\u0079\u0070\u0065"));!_eea ||_fbbe .String ()!="\u0058O\u0062\u006a\u0065\u0063\u0074"{continue ;};if _af ,_efg :=_fbb .GetName (_ea .Get ("\u0053u\u0062\u0074\u0079\u0070\u0065"));
!_efg ||_af .String ()!="\u0046\u006f\u0072\u006d"{continue ;};_fdc (_ea );};};for _ ,_dcb :=range _ade {_ffb =_de (_dcb );if _ffb !=nil {return nil ,_ffb ;};};_db =nil ;for _ ,_cfb :=range objects {if _cga [_cfb ]{continue ;};_db =append (_db ,_cfb );
};for _cc :=range _aa {_db =append (_db ,_cc );};return _db ,nil ;};type content struct{_fgf string ;_ccg *_eg .PdfPageResources ;};func _cgae (_gaa *_fbb .PdfObjectStream ,_ceg []rune ,_aaa []_ac .GlyphIndex )error {_gaa ,_ecb :=_fbb .GetStream (_gaa );
if !_ecb {_f .Log .Debug ("\u0045\u006d\u0062\u0065\u0064\u0064\u0065\u0064\u0020\u0066\u006f\u006e\u0074\u0020\u006f\u0062\u006a\u0065c\u0074\u0020\u006e\u006f\u0074\u0020\u0066o\u0075\u006e\u0064\u0020\u002d\u002d\u0020\u0041\u0042\u004f\u0052T\u0020\u0073\u0075\u0062\u0073\u0065\u0074\u0074\u0069\u006e\u0067");
return _bb .New ("\u0066\u006f\u006e\u0074fi\u006c\u0065\u0032\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064");};_bd ,_fbbg :=_fbb .DecodeStream (_gaa );if _fbbg !=nil {_f .Log .Debug ("\u0044\u0065c\u006f\u0064\u0065 \u0065\u0072\u0072\u006f\u0072\u003a\u0020\u0025\u0076",_fbbg );
return _fbbg ;};_acd ,_fbbg :=_ac .Parse (_ff .NewReader (_bd ));if _fbbg !=nil {_f .Log .Debug ("\u0045\u0072\u0072\u006f\u0072\u0020\u0070\u0061\u0072\u0073\u0069n\u0067\u0020\u0025\u0064\u0020\u0062\u0079\u0074\u0065\u0020f\u006f\u006e\u0074",len (_gaa .Stream ));
return _fbbg ;};_cgg :=_aaa ;if len (_ceg )> 0{_fe :=_acd .LookupRunes (_ceg );_cgg =append (_cgg ,_fe ...);};_acd ,_fbbg =_acd .SubsetKeepIndices (_cgg );if _fbbg !=nil {_f .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020s\u0075\u0062\u0073\u0065\u0074t\u0069n\u0067 \u0066\u006f\u006e\u0074\u003a\u0020\u0025v",_fbbg );
return _fbbg ;};var _dda _ff .Buffer ;_fbbg =_acd .Write (&_dda );if _fbbg !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_fbbg );return _fbbg ;};if _dda .Len ()> len (_bd ){_f .Log .Debug ("\u0052\u0065-\u0077\u0072\u0069\u0074\u0074\u0065\u006e\u0020\u0066\u006f\u006e\u0074\u0020\u0069\u0073\u0020\u006c\u0061\u0072\u0067\u0065\u0072\u0020\u0074\u0068\u0061\u006e\u0020\u006f\u0072\u0069\u0067\u0069\u006e\u0061\u006c\u0020\u002d\u0020\u0073\u006b\u0069\u0070");
return nil ;};_gdd ,_fbbg :=_fbb .MakeStream (_dda .Bytes (),_fbb .NewFlateEncoder ());if _fbbg !=nil {_f .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_fbbg );return _fbbg ;
};*_gaa =*_gdd ;_gaa .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_fbb .MakeInteger (int64 (_dda .Len ())));return nil ;};func _gcga (_cdac []_fbb .PdfObject )objectStructure {_dfee :=objectStructure {};_beba :=false ;for _ ,_adce :=range _cdac {switch _eaeb :=_adce .(type ){case *_fbb .PdfIndirectObject :_dcaf ,_caag :=_fbb .GetDict (_eaeb );
if !_caag {continue ;};_bebg ,_caag :=_fbb .GetName (_dcaf .Get ("\u0054\u0079\u0070\u0065"));if !_caag {continue ;};switch _bebg .String (){case "\u0043a\u0074\u0061\u006c\u006f\u0067":_dfee ._bccf =_dcaf ;_beba =true ;};};if _beba {break ;};};if !_beba {return _dfee ;
};_daad ,_geffc :=_fbb .GetDict (_dfee ._bccf .Get ("\u0050\u0061\u0067e\u0073"));if !_geffc {return _dfee ;};_dfee ._bbcee =_daad ;_cad ,_geffc :=_fbb .GetArray (_daad .Get ("\u004b\u0069\u0064\u0073"));if !_geffc {return _dfee ;};for _ ,_feae :=range _cad .Elements (){_agbc ,_abfb :=_fbb .GetIndirect (_feae );
if !_abfb {break ;};_dfee ._fba =append (_dfee ._fba ,_agbc );};return _dfee ;};type imageModifications struct{Scale float64 ;Encoding _fbb .StreamEncoder ;};

// Chain allows to use sequence of optimizers.
// It implements interface model.Optimizer.
type Chain struct{_ad []_eg .Optimizer };

// CombineDuplicateDirectObjects combines duplicated direct objects by its data hash.
// It implements interface model.Optimizer.
type CombineDuplicateDirectObjects struct{};func _de (_fg *_fbb .PdfObjectStream )error {_bca ,_cb :=_fbb .DecodeStream (_fg );if _cb !=nil {return _cb ;};_ec :=_cg .NewContentStreamParser (string (_bca ));_gce ,_cb :=_ec .Parse ();if _cb !=nil {return _cb ;
};_gce =_acg (_gce );_ce :=_gce .Bytes ();if len (_ce )>=len (_bca ){return nil ;};_da ,_cb :=_fbb .MakeStream (_gce .Bytes (),_fbb .NewFlateEncoder ());if _cb !=nil {return _cb ;};_fg .Stream =_da .Stream ;_fg .Merge (_da .PdfObjectDictionary );return nil ;
};

// CleanUnusedResources represents an optimizer used to clean unused resources.
type CleanUnusedResources struct{};

// Optimize optimizes PDF objects to decrease PDF size.
func (_ecg *CombineIdenticalIndirectObjects )Optimize (objects []_fbb .PdfObject )(_egag []_fbb .PdfObject ,_eae error ){_bgae (objects );_ddad :=make (map[_fbb .PdfObject ]_fbb .PdfObject );_dfdd :=make (map[_fbb .PdfObject ]struct{});_gb :=make (map[string ][]*_fbb .PdfIndirectObject );
for _ ,_fadc :=range objects {_gegg ,_dgc :=_fadc .(*_fbb .PdfIndirectObject );if !_dgc {continue ;};if _cfad ,_ccb :=_gegg .PdfObject .(*_fbb .PdfObjectDictionary );_ccb {if _gdcb ,_bgg :=_cfad .Get ("\u0054\u0079\u0070\u0065").(*_fbb .PdfObjectName );
_bgg &&*_gdcb =="\u0050\u0061\u0067\u0065"{continue ;};_bfc :=_ee .New ();_bfc .Write ([]byte (_cfad .WriteString ()));_gca :=string (_bfc .Sum (nil ));_gb [_gca ]=append (_gb [_gca ],_gegg );};};for _ ,_add :=range _gb {if len (_add )< 2{continue ;};_cgfb :=_add [0];
for _dde :=1;_dde < len (_add );_dde ++{_dcfb :=_add [_dde ];_ddad [_dcfb ]=_cgfb ;_dfdd [_dcfb ]=struct{}{};};};_egag =make ([]_fbb .PdfObject ,0,len (objects )-len (_dfdd ));for _ ,_gdg :=range objects {if _ ,_dab :=_dfdd [_gdg ];_dab {continue ;};_egag =append (_egag ,_gdg );
};_ffca (_egag ,_ddad );return _egag ,nil ;};func _aecg (_fgfg *_eg .Image ,_ggaf float64 )(*_eg .Image ,error ){_febd ,_dcbd :=_fgfg .ToGoImage ();if _dcbd !=nil {return nil ,_dcbd ;};var _gfgb _ag .Image ;_fddd ,_gabg :=_febd .(*_ag .Monochrome );if _gabg {if _dcbd =_fddd .ResolveDecode ();
_dcbd !=nil {return nil ,_dcbd ;};_gfgb ,_dcbd =_fddd .Scale (_ggaf );if _dcbd !=nil {return nil ,_dcbd ;};}else {_ccaa :=int (_c .RoundToEven (float64 (_fgfg .Width )*_ggaf ));_defe :=int (_c .RoundToEven (float64 (_fgfg .Height )*_ggaf ));_gfgb ,_dcbd =_ag .NewImage (_ccaa ,_defe ,int (_fgfg .BitsPerComponent ),_fgfg .ColorComponents ,nil ,nil ,nil );
if _dcbd !=nil {return nil ,_dcbd ;};_ed .CatmullRom .Scale (_gfgb ,_gfgb .Bounds (),_febd ,_febd .Bounds (),_ed .Over ,&_ed .Options {});};_ggec :=_gfgb .Base ();_bgad :=&_eg .Image {Width :int64 (_ggec .Width ),Height :int64 (_ggec .Height ),BitsPerComponent :int64 (_ggec .BitsPerComponent ),ColorComponents :_ggec .ColorComponents ,Data :_ggec .Data };
_bgad .SetDecode (_ggec .Decode );_bgad .SetAlpha (_ggec .Alpha );return _bgad ,nil ;};