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 (_b "bytes";_cb "crypto/md5";_ea "errors";_c "github.com/unidoc/unipdf/v3/common";_dc "github.com/unidoc/unipdf/v3/contentstream";_ef "github.com/unidoc/unipdf/v3/core";_ac "github.com/unidoc/unipdf/v3/extractor";_cf "github.com/unidoc/unipdf/v3/internal/imageutil";
_ag "github.com/unidoc/unipdf/v3/internal/textencoding";_ab "github.com/unidoc/unipdf/v3/model";_e "github.com/unidoc/unitype";_a "golang.org/x/image/draw";_cd "math";);func _de (_be *_dc .ContentStreamOperations )*_dc .ContentStreamOperations {if _be ==nil {return nil ;
};_g :=_dc .ContentStreamOperations {};for _ ,_fb :=range *_be {switch _fb .Operand {case "\u0042\u0044\u0043","\u0042\u004d\u0043","\u0045\u004d\u0043":continue ;case "\u0054\u006d":if len (_fb .Params )==6{if _ga ,_cfg :=_ef .GetNumbersAsFloat (_fb .Params );
_cfg ==nil {if _ga [0]==1&&_ga [1]==0&&_ga [2]==0&&_ga [3]==1{_fb =&_dc .ContentStreamOperation {Params :[]_ef .PdfObject {_fb .Params [4],_fb .Params [5]},Operand :"\u0054\u0064"};};};};};_g =append (_g ,_fb );};return &_g ;};func _dbb (_cec *_ef .PdfObjectStream ,_abcf []rune ,_gdf []_e .GlyphIndex )error {_cec ,_fbc :=_ef .GetStream (_cec );
if !_fbc {_c .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 _ea .New ("\u0066\u006f\u006e\u0074fi\u006c\u0065\u0032\u0020\u006e\u006f\u0074\u0020\u0066\u006f\u0075\u006e\u0064");};_fbd ,_caaa :=_ef .DecodeStream (_cec );if _caaa !=nil {_c .Log .Debug ("\u0044\u0065c\u006f\u0064\u0065 \u0065\u0072\u0072\u006f\u0072\u003a\u0020\u0025\u0076",_caaa );
return _caaa ;};_ddb ,_caaa :=_e .Parse (_b .NewReader (_fbd ));if _caaa !=nil {_c .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 (_cec .Stream ));
return _caaa ;};_agga :=_gdf ;if len (_abcf )> 0{_aec :=_ddb .LookupRunes (_abcf );_agga =append (_agga ,_aec ...);};_ddb ,_caaa =_ddb .SubsetKeepIndices (_agga );if _caaa !=nil {_c .Log .Debug ("\u0045R\u0052\u004f\u0052\u0020s\u0075\u0062\u0073\u0065\u0074t\u0069n\u0067 \u0066\u006f\u006e\u0074\u003a\u0020\u0025v",_caaa );
return _caaa ;};var _gefg _b .Buffer ;_caaa =_ddb .Write (&_gefg );if _caaa !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_caaa );return _caaa ;};if _gefg .Len ()> len (_fbd ){_c .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 ;};_gge ,_caaa :=_ef .MakeStream (_gefg .Bytes (),_ef .NewFlateEncoder ());if _caaa !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004fR \u0057\u0072\u0069\u0074\u0069\u006e\u0067\u0020\u0066\u006f\u006e\u0074\u003a\u0020%\u0076",_caaa );return _caaa ;
};*_cec =*_gge ;_cec .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_ef .MakeInteger (int64 (_gefg .Len ())));return nil ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_cda *CleanContentstream )Optimize (objects []_ef .PdfObject )(_ae []_ef .PdfObject ,_gf error ){_cga :=map[*_ef .PdfObjectStream ]struct{}{};var _gd []*_ef .PdfObjectStream ;_af :=func (_gad *_ef .PdfObjectStream ){if _ ,_cba :=_cga [_gad ];!_cba {_cga [_gad ]=struct{}{};
_gd =append (_gd ,_gad );};};_da :=map[_ef .PdfObject ]bool {};_ca :=map[_ef .PdfObject ]bool {};for _ ,_afa :=range objects {switch _eac :=_afa .(type ){case *_ef .PdfIndirectObject :switch _cgb :=_eac .PdfObject .(type ){case *_ef .PdfObjectDictionary :if _bc ,_bcd :=_ef .GetName (_cgb .Get ("\u0054\u0079\u0070\u0065"));
!_bcd ||_bc .String ()!="\u0050\u0061\u0067\u0065"{continue ;};if _dag ,_ad :=_ef .GetStream (_cgb .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_ad {_af (_dag );}else if _fd ,_egb :=_ef .GetArray (_cgb .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));
_egb {var _ec []*_ef .PdfObjectStream ;for _ ,_cbe :=range _fd .Elements (){if _df ,_dea :=_ef .GetStream (_cbe );_dea {_ec =append (_ec ,_df );};};if len (_ec )> 0{var _ade _b .Buffer ;for _ ,_dfg :=range _ec {if _bcg ,_gac :=_ef .DecodeStream (_dfg );
_gac ==nil {_ade .Write (_bcg );};_da [_dfg ]=true ;};_gef ,_aed :=_ef .MakeStream (_ade .Bytes (),_ef .NewFlateEncoder ());if _aed !=nil {return nil ,_aed ;};_ca [_gef ]=true ;_cgb .Set ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073",_gef );_af (_gef );
};};};case *_ef .PdfObjectStream :if _eb ,_agg :=_ef .GetName (_eac .Get ("\u0054\u0079\u0070\u0065"));!_agg ||_eb .String ()!="\u0058O\u0062\u006a\u0065\u0063\u0074"{continue ;};if _gee ,_dd :=_ef .GetName (_eac .Get ("\u0053u\u0062\u0074\u0079\u0070\u0065"));
!_dd ||_gee .String ()!="\u0046\u006f\u0072\u006d"{continue ;};_af (_eac );};};for _ ,_gg :=range _gd {_gf =_cffa (_gg );if _gf !=nil {return nil ,_gf ;};};_ae =nil ;for _ ,_fa :=range objects {if _da [_fa ]{continue ;};_ae =append (_ae ,_fa );};for _ged :=range _ca {_ae =append (_ae ,_ged );
};return _ae ,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{};

// 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 _cffa (_aca *_ef .PdfObjectStream )error {_gb ,_acg :=_ef .DecodeStream (_aca );if _acg !=nil {return _acg ;};_abb :=_dc .NewContentStreamParser (string (_gb ));_efa ,_acg :=_abb .Parse ();if _acg !=nil {return _acg ;};_efa =_de (_efa );
_agf :=_efa .Bytes ();if len (_agf )>=len (_gb ){return nil ;};_fbf ,_acg :=_ef .MakeStream (_efa .Bytes (),_ef .NewFlateEncoder ());if _acg !=nil {return _acg ;};_aca .Stream =_fbf .Stream ;_aca .Merge (_fbf .PdfObjectDictionary );return 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 ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_fadf *CompressStreams )Optimize (objects []_ef .PdfObject )(_agca []_ef .PdfObject ,_deef error ){_agca =make ([]_ef .PdfObject ,len (objects ));copy (_agca ,objects );for _ ,_bba :=range objects {_ddc ,_ccee :=_ef .GetStream (_bba );if !_ccee {continue ;
};if _eaff :=_ddc .Get ("\u0046\u0069\u006c\u0074\u0065\u0072");_eaff !=nil {if _ ,_eff :=_ef .GetName (_eaff );_eff {continue ;};if _cbc ,_bfbd :=_ef .GetArray (_eaff );_bfbd &&_cbc .Len ()> 0{continue ;};};_degd :=_ef .NewFlateEncoder ();var _edc []byte ;
_edc ,_deef =_degd .EncodeBytes (_ddc .Stream );if _deef !=nil {return _agca ,_deef ;};_dfe :=_degd .MakeStreamDict ();if len (_edc )+len (_dfe .WriteString ())< len (_ddc .Stream ){_ddc .Stream =_edc ;_ddc .PdfObjectDictionary .Merge (_dfe );_ddc .PdfObjectDictionary .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_ef .MakeInteger (int64 (len (_ddc .Stream ))));
};};return _agca ,nil ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_bdf *CombineIdenticalIndirectObjects )Optimize (objects []_ef .PdfObject )(_efg []_ef .PdfObject ,_dab error ){_gabd (objects );_faa :=make (map[_ef .PdfObject ]_ef .PdfObject );_dccfa :=make (map[_ef .PdfObject ]struct{});_cde :=make (map[string ][]*_ef .PdfIndirectObject );
for _ ,_gga :=range objects {_bfd ,_cee :=_gga .(*_ef .PdfIndirectObject );if !_cee {continue ;};if _bfa ,_fab :=_bfd .PdfObject .(*_ef .PdfObjectDictionary );_fab {if _bfcf ,_dcee :=_bfa .Get ("\u0054\u0079\u0070\u0065").(*_ef .PdfObjectName );_dcee &&*_bfcf =="\u0050\u0061\u0067\u0065"{continue ;
};_dff :=_cb .New ();_dff .Write ([]byte (_bfa .WriteString ()));_fcf :=string (_dff .Sum (nil ));_cde [_fcf ]=append (_cde [_fcf ],_bfd );};};for _ ,_bce :=range _cde {if len (_bce )< 2{continue ;};_gae :=_bce [0];for _degg :=1;_degg < len (_bce );_degg ++{_eae :=_bce [_degg ];
_faa [_eae ]=_gae ;_dccfa [_eae ]=struct{}{};};};_efg =make ([]_ef .PdfObject ,0,len (objects )-len (_dccfa ));for _ ,_dbbf :=range objects {if _ ,_bgg :=_dccfa [_dbbf ];_bgg {continue ;};_efg =append (_efg ,_dbbf );};_egcg (_efg ,_faa );return _efg ,nil ;
};func _gag (_eag _ef .PdfObject )[]content {if _eag ==nil {return nil ;};_bfe ,_dbf :=_ef .GetArray (_eag );if !_dbf {_c .Log .Debug ("\u0041\u006e\u006e\u006fts\u0020\u006e\u006f\u0074\u0020\u0061\u006e\u0020\u0061\u0072\u0072\u0061\u0079");return nil ;
};var _ggb []content ;for _ ,_cgd :=range _bfe .Elements (){_cc ,_fge :=_ef .GetDict (_cgd );if !_fge {_c .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 ;};_afe ,_fge :=_ef .GetDict (_cc .Get ("\u0041\u0050"));if !_fge {_c .Log .Debug ("\u004e\u006f\u0020\u0041P \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_dccf :=_ef .TraceToDirectObject (_afe .Get ("\u004e"));
if _dccf ==nil {_c .Log .Debug ("N\u006f\u0020\u004e\u0020en\u0074r\u0079\u0020\u002d\u0020\u0073k\u0069\u0070\u0070\u0069\u006e\u0067");continue ;};var _cgg *_ef .PdfObjectStream ;switch _cea :=_dccf .(type ){case *_ef .PdfObjectDictionary :_eaf ,_eba :=_ef .GetName (_cc .Get ("\u0041\u0053"));
if !_eba {_c .Log .Debug ("\u004e\u006f\u0020\u0041S \u0065\u006e\u0074\u0072\u0079\u0020\u002d\u0020\u0073\u006b\u0069\u0070\u0070\u0069n\u0067");continue ;};_cgg ,_eba =_ef .GetStream (_cea .Get (*_eaf ));if !_eba {_c .Log .Debug ("\u0046o\u0072\u006d\u0020\u006eo\u0074\u0020\u0066\u006f\u0075n\u0064 \u002d \u0073\u006b\u0069\u0070\u0070\u0069\u006eg");
continue ;};case *_ef .PdfObjectStream :_cgg =_cea ;};if _cgg ==nil {_c .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 ;};_ceb ,_gdg :=_ab .NewXObjectFormFromStream (_cgg );if _gdg !=nil {_c .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",_gdg );
continue ;};_fce ,_gdg :=_ceb .GetContentStream ();if _gdg !=nil {_c .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",_gdg );continue ;};_ggb =append (_ggb ,content {_abcc :string (_fce ),_gfa :_ceb .Resources });
};return _ggb ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_caef *ObjectStreams )Optimize (objects []_ef .PdfObject )(_efgc []_ef .PdfObject ,_edec error ){_eefc :=&_ef .PdfObjectStreams {};_fgd :=make ([]_ef .PdfObject ,0,len (objects ));for _ ,_cdf :=range objects {if _abgb ,_gbg :=_cdf .(*_ef .PdfIndirectObject );
_gbg &&_abgb .GenerationNumber ==0{_eefc .Append (_cdf );}else {_fgd =append (_fgd ,_cdf );};};if _eefc .Len ()==0{return _fgd ,nil ;};_efgc =make ([]_ef .PdfObject ,0,len (_fgd )+_eefc .Len ()+1);if _eefc .Len ()> 1{_efgc =append (_efgc ,_eefc );};_efgc =append (_efgc ,_eefc .Elements ()...);
_efgc =append (_efgc ,_fgd ...);return _efgc ,nil ;};func _degc (_cdae []_ef .PdfObject )objectStructure {_afda :=objectStructure {};_gfe :=false ;for _ ,_gcgf :=range _cdae {switch _aag :=_gcgf .(type ){case *_ef .PdfIndirectObject :_cabc ,_bgeg :=_ef .GetDict (_aag );
if !_bgeg {continue ;};_bbfd ,_bgeg :=_ef .GetName (_cabc .Get ("\u0054\u0079\u0070\u0065"));if !_bgeg {continue ;};switch _bbfd .String (){case "\u0043a\u0074\u0061\u006c\u006f\u0067":_afda ._bde =_cabc ;_gfe =true ;};};if _gfe {break ;};};if !_gfe {return _afda ;
};_egef ,_dga :=_ef .GetDict (_afda ._bde .Get ("\u0050\u0061\u0067e\u0073"));if !_dga {return _afda ;};_afda ._dcef =_egef ;_acefa ,_dga :=_ef .GetArray (_egef .Get ("\u004b\u0069\u0064\u0073"));if !_dga {return _afda ;};for _ ,_fbe :=range _acefa .Elements (){_gbcd ,_ceec :=_ef .GetIndirect (_fbe );
if !_ceec {break ;};_afda ._ccfc =append (_afda ._ccfc ,_gbcd );};return _afda ;};type imageModifications struct{Scale float64 ;Encoding _ef .StreamEncoder ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_egfa *Image )Optimize (objects []_ef .PdfObject )(_acdd []_ef .PdfObject ,_cef error ){if _egfa .ImageQuality <=0{return objects ,nil ;};_afef :=_dae (objects );if len (_afef )==0{return objects ,nil ;};_ccb :=make (map[_ef .PdfObject ]_ef .PdfObject );
_fdeg :=make (map[_ef .PdfObject ]struct{});for _ ,_gcg :=range _afef {_cgae :=_gcg .Stream .Get ("\u0053\u004d\u0061s\u006b");_fdeg [_cgae ]=struct{}{};};for _ggbd ,_fgge :=range _afef {_fadg :=_fgge .Stream ;if _ ,_acgb :=_fdeg [_fadg ];_acgb {continue ;
};_bee ,_fag :=_ab .NewXObjectImageFromStream (_fadg );if _fag !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_fag );continue ;};switch _bee .Filter .(type ){case *_ef .JBIG2Encoder :continue ;case *_ef .CCITTFaxEncoder :continue ;
};_cad ,_fag :=_bee .ToImage ();if _fag !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_fag );continue ;};_afb :=_ef .NewDCTEncoder ();_afb .ColorComponents =_cad .ColorComponents ;_afb .Quality =_egfa .ImageQuality ;
_afb .BitsPerComponent =_fgge .BitsPerComponent ;_afb .Width =_fgge .Width ;_afb .Height =_fgge .Height ;_ebd ,_fag :=_afb .EncodeBytes (_cad .Data );if _fag !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_fag );continue ;
};var _fdf _ef .StreamEncoder ;_fdf =_afb ;{_fggb :=_ef .NewFlateEncoder ();_ceg :=_ef .NewMultiEncoder ();_ceg .AddEncoder (_fggb );_ceg .AddEncoder (_afb );_ccf ,_fef :=_ceg .EncodeBytes (_cad .Data );if _fef !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_fef );
continue ;};if len (_ccf )< len (_ebd ){_c .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 (_ebd ),len (_ccf ),len (_fadg .Stream ));
_ebd =_ccf ;_fdf =_ceg ;};};_geg :=len (_fadg .Stream );if _geg < len (_ebd ){continue ;};_aaa :=&_ef .PdfObjectStream {Stream :_ebd };_aaa .PdfObjectReference =_fadg .PdfObjectReference ;_aaa .PdfObjectDictionary =_ef .MakeDict ();_aaa .Merge (_fadg .PdfObjectDictionary );
_aaa .Merge (_fdf .MakeStreamDict ());_aaa .Set ("\u004c\u0065\u006e\u0067\u0074\u0068",_ef .MakeInteger (int64 (len (_ebd ))));_ccb [_fadg ]=_aaa ;_afef [_ggbd ].Stream =_aaa ;};_acdd =make ([]_ef .PdfObject ,len (objects ));copy (_acdd ,objects );_egcg (_acdd ,_ccb );
return _acdd ,nil ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_abef *ImagePPI )Optimize (objects []_ef .PdfObject )(_gbff []_ef .PdfObject ,_agbc error ){if _abef .ImageUpperPPI <=0{return objects ,nil ;};_fdfg :=_dae (objects );if len (_fdfg )==0{return objects ,nil ;};_afca :=make (map[_ef .PdfObject ]struct{});
for _ ,_bebc :=range _fdfg {_geeg :=_bebc .Stream .PdfObjectDictionary .Get ("\u0053\u004d\u0061s\u006b");_afca [_geeg ]=struct{}{};};_ddd :=make (map[*_ef .PdfObjectStream ]*imageInfo );for _ ,_bgc :=range _fdfg {_ddd [_bgc .Stream ]=_bgc ;};var _bfda *_ef .PdfObjectDictionary ;
for _ ,_ffe :=range objects {if _ceed ,_bcga :=_ef .GetDict (_ffe );_bfda ==nil &&_bcga {if _aadc ,_ggee :=_ef .GetName (_ceed .Get ("\u0054\u0079\u0070\u0065"));_ggee &&*_aadc =="\u0043a\u0074\u0061\u006c\u006f\u0067"{_bfda =_ceed ;};};};if _bfda ==nil {return objects ,nil ;
};_bdb ,_gcb :=_ef .GetDict (_bfda .Get ("\u0050\u0061\u0067e\u0073"));if !_gcb {return objects ,nil ;};_dfag ,_cbee :=_ef .GetArray (_bdb .Get ("\u004b\u0069\u0064\u0073"));if !_cbee {return objects ,nil ;};for _ ,_edeb :=range _dfag .Elements (){_eef :=make (map[string ]*imageInfo );
_bag ,_cbba :=_ef .GetDict (_edeb );if !_cbba {continue ;};_adea ,_ :=_ggea (_bag .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));if len (_adea )==0{continue ;};_gaea ,_fafg :=_ef .GetDict (_bag .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));
if !_fafg {continue ;};_gaa ,_eabd :=_ab .NewPdfPageResourcesFromDict (_gaea );if _eabd !=nil {_c .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",_eabd );
continue ;};_edd ,_ccgf :=_ef .GetDict (_gaea .Get ("\u0058O\u0062\u006a\u0065\u0063\u0074"));if !_ccgf {continue ;};_egfag :=_edd .Keys ();for _ ,_eabg :=range _egfag {if _aga ,_bebce :=_ef .GetStream (_edd .Get (_eabg ));_bebce {if _fcg ,_gdgc :=_ddd [_aga ];
_gdgc {_eef [string (_eabg )]=_fcg ;};};};_fea :=_dc .NewContentStreamParser (_adea );_eadg ,_eabd :=_fea .Parse ();if _eabd !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_eabd );continue ;};_ddda :=_dc .NewContentStreamProcessor (*_eadg );
_ddda .AddHandler (_dc .HandlerConditionEnumAllOperands ,"",func (_bga *_dc .ContentStreamOperation ,_ggf _dc .GraphicsState ,_abd *_ab .PdfPageResources )error {switch _bga .Operand {case "\u0044\u006f":if len (_bga .Params )!=1{_c .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 ;};_gfaa ,_fed :=_ef .GetName (_bga .Params [0]);if !_fed {_c .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 _ecgd ,_fcgb :=_eef [string (*_gfaa )];_fcgb {_caf :=_ggf .CTM .ScalingFactorX ();_cdbg :=_ggf .CTM .ScalingFactorY ();_cddbc ,_fda :=_caf /72.0,_cdbg /72.0;_bagg ,_bbf :=float64 (_ecgd .Width )/_cddbc ,float64 (_ecgd .Height )/_fda ;if _cddbc ==0||_fda ==0{_bagg =72.0;
_bbf =72.0;};_ecgd .PPI =_cd .Max (_ecgd .PPI ,_bagg );_ecgd .PPI =_cd .Max (_ecgd .PPI ,_bbf );};};return nil ;});_eabd =_ddda .Process (_gaa );if _eabd !=nil {_c .Log .Debug ("E\u0052\u0052\u004f\u0052 p\u0072o\u0063\u0065\u0073\u0073\u0069n\u0067\u003a\u0020\u0025\u002b\u0076",_eabd );
continue ;};};for _ ,_daa :=range _fdfg {if _ ,_ddbd :=_afca [_daa .Stream ];_ddbd {continue ;};if _daa .PPI <=_abef .ImageUpperPPI {continue ;};_dada ,_ceag :=_ab .NewXObjectImageFromStream (_daa .Stream );if _ceag !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_ceag );
continue ;};var _dgga imageModifications ;_dgga .Scale =_abef .ImageUpperPPI /_daa .PPI ;if _daa .BitsPerComponent ==1&&_daa .ColorComponents ==1{_cdbf :=_cd .Round (_daa .PPI /_abef .ImageUpperPPI );_egec :=_cf .NextPowerOf2 (uint (_cdbf ));if _cf .InDelta (float64 (_egec ),1/_dgga .Scale ,0.3){_dgga .Scale =float64 (1)/float64 (_egec );
};if _ ,_dge :=_dada .Filter .(*_ef .JBIG2Encoder );!_dge {_dgga .Encoding =_ef .NewJBIG2Encoder ();};};if _ceag =_cfab (_dada ,_dgga );_ceag !=nil {_c .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",_ceag );
continue ;};_dgga .Encoding =nil ;if _def ,_gbb :=_ef .GetStream (_daa .Stream .PdfObjectDictionary .Get ("\u0053\u004d\u0061s\u006b"));_gbb {_bca ,_dcce :=_ab .NewXObjectImageFromStream (_def );if _dcce !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_dcce );
continue ;};if _dcce =_cfab (_bca ,_dgga );_dcce !=nil {_c .Log .Debug ("\u0045\u0052\u0052\u004f\u0052\u003a\u0020\u0025\u002b\u0076",_dcce );continue ;};};};return objects ,nil ;};func _eeg (_aa []_ef .PdfObject )(_efac map[*_ef .PdfObjectStream ]struct{},_cae error ){_efac =map[*_ef .PdfObjectStream ]struct{}{};
_bfc :=map[*_ab .PdfFont ]struct{}{};_ce :=_degc (_aa );for _ ,_gda :=range _ce ._ccfc {_eed ,_fe :=_ef .GetDict (_gda .PdfObject );if !_fe {continue ;};_dgg ,_fe :=_ef .GetDict (_eed .Get ("\u0052e\u0073\u006f\u0075\u0072\u0063\u0065s"));if !_fe {continue ;
};_bbd ,_ :=_ggea (_eed .Get ("\u0043\u006f\u006e\u0074\u0065\u006e\u0074\u0073"));_fg ,_acd :=_ab .NewPdfPageResourcesFromDict (_dgg );if _acd !=nil {return nil ,_acd ;};_ddf :=[]content {{_abcc :_bbd ,_gfa :_fg }};_dfd :=_gag (_eed .Get ("\u0041\u006e\u006e\u006f\u0074\u0073"));
if _dfd !=nil {_ddf =append (_ddf ,_dfd ...);};for _ ,_bg :=range _ddf {_adf ,_faf :=_ac .NewFromContents (_bg ._abcc ,_bg ._gfa );if _faf !=nil {return nil ,_faf ;};_cag ,_ ,_ ,_faf :=_adf .ExtractPageText ();if _faf !=nil {return nil ,_faf ;};for _ ,_ead :=range _cag .Marks ().Elements (){if _ead .Font ==nil {continue ;
};if _ ,_dcbe :=_bfc [_ead .Font ];!_dcbe {_bfc [_ead .Font ]=struct{}{};};};};};_ada :=map[*_ef .PdfObjectStream ][]*_ab .PdfFont {};for _cab :=range _bfc {_bbde :=_cab .FontDescriptor ();if _bbde ==nil ||_bbde .FontFile2 ==nil {continue ;};_ecb ,_ebb :=_ef .GetStream (_bbde .FontFile2 );
if !_ebb {continue ;};_ada [_ecb ]=append (_ada [_ecb ],_cab );};for _dcf :=range _ada {var _cdg []rune ;var _dfdb []_e .GlyphIndex ;for _ ,_ebg :=range _ada [_dcf ]{switch _gfg :=_ebg .Encoder ().(type ){case *_ag .IdentityEncoder :_caa :=_gfg .RegisteredRunes ();
_db :=make ([]_e .GlyphIndex ,len (_caa ));for _fgg ,_adb :=range _caa {_db [_fgg ]=_e .GlyphIndex (_adb );};_dfdb =append (_dfdb ,_db ...);case *_ag .TrueTypeFontEncoder :_dee :=_gfg .RegisteredRunes ();_cdg =append (_cdg ,_dee ...);case _ag .SimpleEncoder :_agb :=_gfg .Charcodes ();
for _ ,_gc :=range _agb {_ff ,_bab :=_gfg .CharcodeToRune (_gc );if !_bab {_c .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",_gc );
continue ;};_cdg =append (_cdg ,_ff );};};};_cae =_dbb (_dcf ,_cdg ,_dfdb );if _cae !=nil {_c .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",_cae );
return nil ,_cae ;};_efac [_dcf ]=struct{}{};};return _efac ,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 ;};func _gabd (_bgfe []_ef .PdfObject ){for _eaeb ,_egff :=range _bgfe {switch _afge :=_egff .(type ){case *_ef .PdfIndirectObject :_afge .ObjectNumber =int64 (_eaeb +1);_afge .GenerationNumber =0;case *_ef .PdfObjectStream :_afge .ObjectNumber =int64 (_eaeb +1);
_afge .GenerationNumber =0;case *_ef .PdfObjectStreams :_afge .ObjectNumber =int64 (_eaeb +1);_afge .GenerationNumber =0;};};};

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

// Optimize optimizes PDF objects to decrease PDF size.
func (_aee *CombineDuplicateDirectObjects )Optimize (objects []_ef .PdfObject )(_dcfg []_ef .PdfObject ,_cce error ){_gabd (objects );_fbfa :=make (map[string ][]*_ef .PdfObjectDictionary );var _fgf func (_acb *_ef .PdfObjectDictionary );_fgf =func (_ffb *_ef .PdfObjectDictionary ){for _ ,_fcd :=range _ffb .Keys (){_baa :=_ffb .Get (_fcd );
if _beb ,_gaga :=_baa .(*_ef .PdfObjectDictionary );_gaga {_aeg :=_cb .New ();_aeg .Write ([]byte (_beb .WriteString ()));_gdfd :=string (_aeg .Sum (nil ));_fbfa [_gdfd ]=append (_fbfa [_gdfd ],_beb );_fgf (_beb );};};};for _ ,_fdg :=range objects {_acc ,_cdad :=_fdg .(*_ef .PdfIndirectObject );
if !_cdad {continue ;};if _cdd ,_cfb :=_acc .PdfObject .(*_ef .PdfObjectDictionary );_cfb {_fgf (_cdd );};};_ed :=make ([]_ef .PdfObject ,0,len (_fbfa ));_aff :=make (map[_ef .PdfObject ]_ef .PdfObject );for _ ,_bgf :=range _fbfa {if len (_bgf )< 2{continue ;
};_fad :=_ef .MakeDict ();_fad .Merge (_bgf [0]);_dbc :=_ef .MakeIndirectObject (_fad );_ed =append (_ed ,_dbc );for _cfc :=0;_cfc < len (_bgf );_cfc ++{_aef :=_bgf [_cfc ];_aff [_aef ]=_dbc ;};};_dcfg =make ([]_ef .PdfObject ,len (objects ));copy (_dcfg ,objects );
_dcfg =append (_ed ,_dcfg ...);_egcg (_dcfg ,_aff );return _dcfg ,nil ;};

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

// 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 (_fgeg *CombineDuplicateStreams )Optimize (objects []_ef .PdfObject )(_deg []_ef .PdfObject ,_ggbe error ){_afg :=make (map[_ef .PdfObject ]_ef .PdfObject );_dac :=make (map[_ef .PdfObject ]struct{});_egc :=make (map[string ][]*_ef .PdfObjectStream );
for _ ,_cdb :=range objects {if _ecd ,_gbf :=_cdb .(*_ef .PdfObjectStream );_gbf {_dbe :=_cb .New ();_dbe .Write (_ecd .Stream );_dbe .Write ([]byte (_ecd .PdfObjectDictionary .WriteString ()));_cbb :=string (_dbe .Sum (nil ));_egc [_cbb ]=append (_egc [_cbb ],_ecd );
};};for _ ,_age :=range _egc {if len (_age )< 2{continue ;};_egg :=_age [0];for _bge :=1;_bge < len (_age );_bge ++{_agc :=_age [_bge ];_afg [_agc ]=_egg ;_dac [_agc ]=struct{}{};};};_deg =make ([]_ef .PdfObject ,0,len (objects )-len (_dac ));for _ ,_dacg :=range objects {if _ ,_egce :=_dac [_dacg ];
_egce {continue ;};_deg =append (_deg ,_dacg );};_egcg (_deg ,_afg );return _deg ,nil ;};func _ggea (_eaec _ef .PdfObject )(_adbb string ,_febe []_ef .PdfObject ){var _cbf _b .Buffer ;switch _feef :=_eaec .(type ){case *_ef .PdfIndirectObject :_febe =append (_febe ,_feef );
_eaec =_feef .PdfObject ;};switch _afec :=_eaec .(type ){case *_ef .PdfObjectStream :if _bdbb ,_ggd :=_ef .DecodeStream (_afec );_ggd ==nil {_cbf .Write (_bdbb );_febe =append (_febe ,_afec );};case *_ef .PdfObjectArray :for _ ,_gaef :=range _afec .Elements (){switch _gecf :=_gaef .(type ){case *_ef .PdfObjectStream :if _gcbf ,_ddg :=_ef .DecodeStream (_gecf );
_ddg ==nil {_cbf .Write (_gcbf );_febe =append (_febe ,_gecf );};};};};return _cbf .String (),_febe ;};func _egcg (_aggaf []_ef .PdfObject ,_eada map[_ef .PdfObject ]_ef .PdfObject ){if len (_eada )==0{return ;};for _edg ,_abda :=range _aggaf {if _bbb ,_deeb :=_eada [_abda ];
_deeb {_aggaf [_edg ]=_bbb ;continue ;};_eada [_abda ]=_abda ;switch _gdga :=_abda .(type ){case *_ef .PdfObjectArray :_fga :=make ([]_ef .PdfObject ,_gdga .Len ());copy (_fga ,_gdga .Elements ());_egcg (_fga ,_eada );for _gfde ,_cbd :=range _fga {_gdga .Set (_gfde ,_cbd );
};case *_ef .PdfObjectStreams :_egcg (_gdga .Elements (),_eada );case *_ef .PdfObjectStream :_ebab :=[]_ef .PdfObject {_gdga .PdfObjectDictionary };_egcg (_ebab ,_eada );_gdga .PdfObjectDictionary =_ebab [0].(*_ef .PdfObjectDictionary );case *_ef .PdfObjectDictionary :_gab :=_gdga .Keys ();
_bea :=make ([]_ef .PdfObject ,len (_gab ));for _abf ,_ebbf :=range _gab {_bea [_abf ]=_gdga .Get (_ebbf );};_egcg (_bea ,_eada );for _bcf ,_feb :=range _gab {_gdga .Set (_feb ,_bea [_bcf ]);};case *_ef .PdfIndirectObject :_gced :=[]_ef .PdfObject {_gdga .PdfObject };
_egcg (_gced ,_eada );_gdga .PdfObject =_gced [0];};};};type objectStructure struct{_bde *_ef .PdfObjectDictionary ;_dcef *_ef .PdfObjectDictionary ;_ccfc []*_ef .PdfIndirectObject ;};

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

// Options describes PDF optimization parameters.
type Options struct{CombineDuplicateStreams bool ;CombineDuplicateDirectObjects bool ;ImageUpperPPI float64 ;ImageQuality int ;UseObjectStreams bool ;CombineIdenticalIndirectObjects bool ;CompressStreams bool ;CleanFonts bool ;SubsetFonts bool ;CleanContentstream bool ;
};func _cfab (_gec *_ab .XObjectImage ,_ebbe imageModifications )error {_gbd ,_gcf :=_gec .ToImage ();if _gcf !=nil {return _gcf ;};if _ebbe .Scale !=0{_gbd ,_gcf =_bbec (_gbd ,_ebbe .Scale );if _gcf !=nil {return _gcf ;};};if _ebbe .Encoding !=nil {_gec .Filter =_ebbe .Encoding ;
};_gec .Decode =nil ;switch _gadd :=_gec .Filter .(type ){case *_ef .FlateEncoder :if _gadd .Predictor !=1&&_gadd .Predictor !=11{_gadd .Predictor =1;};};if _gcf =_gec .SetImage (_gbd ,nil );_gcf !=nil {_c .Log .Debug ("\u0045\u0072\u0072or\u0020\u0073\u0065\u0074\u0074\u0069\u006e\u0067\u0020\u0069\u006d\u0061\u0067\u0065\u003a\u0020\u0025\u0076",_gcf );
return _gcf ;};_gec .ToPdfObject ();return nil ;};type imageInfo struct{BitsPerComponent int ;ColorComponents int ;Width int ;Height int ;Stream *_ef .PdfObjectStream ;PPI float64 ;};

// CombineDuplicateDirectObjects combines duplicated direct objects by its data hash.
// It implements interface model.Optimizer.
type CombineDuplicateDirectObjects struct{};func _bbec (_abe *_ab .Image ,_bdg float64 )(*_ab .Image ,error ){_afc ,_fee :=_abe .ToGoImage ();if _fee !=nil {return nil ,_fee ;};var _cbed _cf .Image ;_bgb ,_effa :=_afc .(*_cf .Monochrome );if _effa {if _fee =_bgb .ResolveDecode ();
_fee !=nil {return nil ,_fee ;};_cbed ,_fee =_bgb .Scale (_bdg );if _fee !=nil {return nil ,_fee ;};}else {_bef :=int (_cd .RoundToEven (float64 (_abe .Width )*_bdg ));_cdbd :=int (_cd .RoundToEven (float64 (_abe .Height )*_bdg ));_cbed ,_fee =_cf .NewImage (_bef ,_cdbd ,int (_abe .BitsPerComponent ),_abe .ColorComponents ,nil ,nil ,nil );
if _fee !=nil {return nil ,_fee ;};_a .CatmullRom .Scale (_cbed ,_cbed .Bounds (),_afc ,_afc .Bounds (),_a .Over ,&_a .Options {});};_gfda :=_cbed .Base ();_eggf :=&_ab .Image {Width :int64 (_gfda .Width ),Height :int64 (_gfda .Height ),BitsPerComponent :int64 (_gfda .BitsPerComponent ),ColorComponents :_gfda .ColorComponents ,Data :_gfda .Data };
_eggf .SetDecode (_gfda .Decode );_eggf .SetAlpha (_gfda .Alpha );return _eggf ,nil ;};

// Optimize optimizes PDF objects to decrease PDF size.
func (_f *Chain )Optimize (objects []_ef .PdfObject )(_dg []_ef .PdfObject ,_ee error ){_dcc :=objects ;for _ ,_cg :=range _f ._ace {_cff ,_eee :=_cg .Optimize (_dcc );if _eee !=nil {_c .Log .Debug ("\u0045\u0052\u0052OR\u0020\u004f\u0070\u0074\u0069\u006d\u0069\u007a\u0061\u0074\u0069\u006f\u006e\u003a\u0020\u0025\u002b\u0076",_eee );
continue ;};_dcc =_cff ;};return _dcc ,nil ;};

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

// Append appends optimizers to the chain.
func (_ba *Chain )Append (optimizers ..._ab .Optimizer ){_ba ._ace =append (_ba ._ace ,optimizers ...)};type content struct{_abcc string ;_gfa *_ab .PdfPageResources ;};func _dae (_gce []_ef .PdfObject )[]*imageInfo {_eab :=_ef .PdfObjectName ("\u0053u\u0062\u0074\u0079\u0070\u0065");
_gdd :=make (map[*_ef .PdfObjectStream ]struct{});var _gbc []*imageInfo ;for _ ,_baab :=range _gce {_eeeg ,_bdd :=_ef .GetStream (_baab );if !_bdd {continue ;};if _ ,_fgef :=_gdd [_eeeg ];_fgef {continue ;};_gdd [_eeeg ]=struct{}{};_gfd :=_eeeg .PdfObjectDictionary .Get (_eab );
_acef ,_bdd :=_ef .GetName (_gfd );if !_bdd ||string (*_acef )!="\u0049\u006d\u0061g\u0065"{continue ;};_fcc :=&imageInfo {Stream :_eeeg ,BitsPerComponent :8};if _eeb ,_agd :=_ef .GetIntVal (_eeeg .Get ("\u0042\u0069t\u0073\u0050\u0065r\u0043\u006f\u006d\u0070\u006f\u006e\u0065\u006e\u0074"));
_agd {_fcc .BitsPerComponent =_eeb ;};if _abg ,_gfgc :=_ef .GetIntVal (_eeeg .Get ("\u0057\u0069\u0064t\u0068"));_gfgc {_fcc .Width =_abg ;};if _cddb ,_bae :=_ef .GetIntVal (_eeeg .Get ("\u0048\u0065\u0069\u0067\u0068\u0074"));_bae {_fcc .Height =_cddb ;
};_dfa ,_fcce :=_ab .NewPdfColorspaceFromPdfObject (_eeeg .Get ("\u0043\u006f\u006c\u006f\u0072\u0053\u0070\u0061\u0063\u0065"));if _fcce !=nil {_c .Log .Debug ("\u0045R\u0052\u004f\u0052\u003a\u0020\u0025v",_fcce );continue ;};if _dfa ==nil {_aecf ,_cgbg :=_ef .GetName (_eeeg .Get ("\u0046\u0069\u006c\u0074\u0065\u0072"));
if _cgbg {switch _aecf .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":_dfa =_ab .NewPdfColorspaceDeviceGray ();_fcc .BitsPerComponent =1;
};};};switch _adaf :=_dfa .(type ){case *_ab .PdfColorspaceDeviceRGB :_fcc .ColorComponents =3;case *_ab .PdfColorspaceDeviceGray :_fcc .ColorComponents =1;default:_c .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",_adaf );
continue ;};_gbc =append (_gbc ,_fcc );};return _gbc ;};

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

// Optimize optimizes PDF objects to decrease PDF size.
func (_fde *CleanFonts )Optimize (objects []_ef .PdfObject )(_cdgb []_ef .PdfObject ,_ebge error ){var _ecg map[*_ef .PdfObjectStream ]struct{};if _fde .Subset {var _dbbg error ;_ecg ,_dbbg =_eeg (objects );if _dbbg !=nil {_c .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",_dbbg );
return nil ,_dbbg ;};};for _ ,_deed :=range objects {_dca ,_bbe :=_ef .GetStream (_deed );if !_bbe {continue ;};if _ ,_fae :=_ecg [_dca ];_fae {continue ;};_aae ,_aad :=_ef .NewEncoderFromStream (_dca );if _aad !=nil {_c .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",_aad );
continue ;};_fec ,_aad :=_aae .DecodeStream (_dca );if _aad !=nil {_c .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",_aad );
continue ;};if len (_fec )< 4{continue ;};_gacb :=string (_fec [:4]);if _gacb =="\u004f\u0054\u0054\u004f"{continue ;};if _gacb !="\u0000\u0001\u0000\u0000"&&_gacb !="\u0074\u0072\u0075\u0065"{continue ;};_eea ,_aad :=_e .Parse (_b .NewReader (_fec ));
if _aad !=nil {_c .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",_aad );continue ;};_aad =_eea .Optimize ();
if _aad !=nil {_c .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",_aad );continue ;};var _bd _b .Buffer ;_aad =_eea .Write (&_bd );
if _aad !=nil {_c .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",_aad );continue ;};if _bd .Len ()> len (_fec ){_c .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 ;};_dce ,_aad :=_ef .MakeStream (_bd .Bytes (),_ef .NewFlateEncoder ());if _aad !=nil {continue ;};*_dca =*_dce ;_dca .Set ("\u004ce\u006e\u0067\u0074\u0068\u0031",_ef .MakeInteger (int64 (_bd .Len ())));};return objects ,nil ;};