unipdf/internal/jbig2/decoder/arithmetic/arithmetic.go

//
// Copyright 2020 FoxyUtils ehf. All rights reserved.
//
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// DO NOT EDIT: generated by unitwist Go source code obfuscator.
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package arithmetic ;import (_f "fmt";_fb "github.com/unidoc/unipdf/v3/common";_a "github.com/unidoc/unipdf/v3/internal/bitwise";_fa "github.com/unidoc/unipdf/v3/internal/jbig2/internal";_g "io";_d "strings";);func NewStats (contextSize int32 ,index int32 )*DecoderStats {return &DecoderStats {_ade :index ,_baa :contextSize ,_aa :make ([]byte ,contextSize ),_cbc :make ([]byte ,contextSize )};};func (_dce *Decoder )readByte ()error {if _dce ._gc .StreamPosition ()> _dce ._ba {if _ ,_fab :=_dce ._gc .Seek (-1,_g .SeekCurrent );_fab !=nil {return _fab ;};};_ded ,_fdf :=_dce ._gc .ReadByte ();if _fdf !=nil {return _fdf ;};_dce ._b =_ded ;if _dce ._b ==0xFF{_aef ,_cgg :=_dce ._gc .ReadByte ();if _cgg !=nil {return _cgg ;};if _aef > 0x8F{_dce ._ed +=0xFF00;_dce ._fg =8;if _ ,_gd :=_dce ._gc .Seek (-2,_g .SeekCurrent );_gd !=nil {return _gd ;};}else {_dce ._ed +=uint64 (_aef )<<9;_dce ._fg =7;};}else {_ded ,_fdf =_dce ._gc .ReadByte ();if _fdf !=nil {return _fdf ;};_dce ._b =_ded ;_dce ._ed +=uint64 (_dce ._b )<<8;_dce ._fg =8;};_dce ._ed &=0xFFFFFFFFFF;return nil ;};func (_fbf *Decoder )mpsExchange (_add *DecoderStats ,_ffb int32 )int {_gcg :=_add ._cbc [_add ._ade ];if _fbf ._eg < _eb [_ffb ][0]{if _eb [_ffb ][3]==1{_add .toggleMps ();};_add .setEntry (int (_eb [_ffb ][2]));return int (1-_gcg );};_add .setEntry (int (_eb [_ffb ][1]));return int (_gcg );};func (_de *Decoder )DecodeInt (stats *DecoderStats )(int32 ,error ){var (_dc ,_ag int32 ;_fdd ,_df ,_ae int ;_cf error ;);if stats ==nil {stats =NewStats (512,1);};_de ._fd =1;_df ,_cf =_de .decodeIntBit (stats );if _cf !=nil {return 0,_cf ;};_fdd ,_cf =_de .decodeIntBit (stats );if _cf !=nil {return 0,_cf ;};if _fdd ==1{_fdd ,_cf =_de .decodeIntBit (stats );if _cf !=nil {return 0,_cf ;};if _fdd ==1{_fdd ,_cf =_de .decodeIntBit (stats );if _cf !=nil {return 0,_cf ;};if _fdd ==1{_fdd ,_cf =_de .decodeIntBit (stats );if _cf !=nil {return 0,_cf ;};if _fdd ==1{_fdd ,_cf =_de .decodeIntBit (stats );if _cf !=nil {return 0,_cf ;};if _fdd ==1{_ae =32;_ag =4436;}else {_ae =12;_ag =340;};}else {_ae =8;_ag =84;};}else {_ae =6;_ag =20;};}else {_ae =4;_ag =4;};}else {_ae =2;_ag =0;};for _dg :=0;_dg < _ae ;_dg ++{_fdd ,_cf =_de .decodeIntBit (stats );if _cf !=nil {return 0,_cf ;};_dc =(_dc <<1)|int32 (_fdd );};_dc +=_ag ;if _df ==0{return _dc ,nil ;}else if _df ==1&&_dc > 0{return -_dc ,nil ;};return 0,_fa .ErrOOB ;};func (_gdf *DecoderStats )Overwrite (dNew *DecoderStats ){for _agd :=0;_agd < len (_gdf ._aa );_agd ++{_gdf ._aa [_agd ]=dNew ._aa [_agd ];_gdf ._cbc [_agd ]=dNew ._cbc [_agd ];};};var (_eb =[][4]uint32 {{0x5601,1,1,1},{0x3401,2,6,0},{0x1801,3,9,0},{0x0AC1,4,12,0},{0x0521,5,29,0},{0x0221,38,33,0},{0x5601,7,6,1},{0x5401,8,14,0},{0x4801,9,14,0},{0x3801,10,14,0},{0x3001,11,17,0},{0x2401,12,18,0},{0x1C01,13,20,0},{0x1601,29,21,0},{0x5601,15,14,1},{0x5401,16,14,0},{0x5101,17,15,0},{0x4801,18,16,0},{0x3801,19,17,0},{0x3401,20,18,0},{0x3001,21,19,0},{0x2801,22,19,0},{0x2401,23,20,0},{0x2201,24,21,0},{0x1C01,25,22,0},{0x1801,26,23,0},{0x1601,27,24,0},{0x1401,28,25,0},{0x1201,29,26,0},{0x1101,30,27,0},{0x0AC1,31,28,0},{0x09C1,32,29,0},{0x08A1,33,30,0},{0x0521,34,31,0},{0x0441,35,32,0},{0x02A1,36,33,0},{0x0221,37,34,0},{0x0141,38,35,0},{0x0111,39,36,0},{0x0085,40,37,0},{0x0049,41,38,0},{0x0025,42,39,0},{0x0015,43,40,0},{0x0009,44,41,0},{0x0005,45,42,0},{0x0001,45,43,0},{0x5601,46,46,0}};);func (_eda *Decoder )init ()error {_eda ._ba =_eda ._gc .StreamPosition ();_gcc ,_cg :=_eda ._gc .ReadByte ();if _cg !=nil {_fb .Log .Debug ("B\u0075\u0066\u0066\u0065\u0072\u0030 \u0072\u0065\u0061\u0064\u0042\u0079\u0074\u0065\u0020f\u0061\u0069\u006ce\u0064.\u0020\u0025\u0076",_cg );return _cg ;};_eda ._b =_gcc ;_eda ._ed =uint64 (_gcc )<<16;if _cg =_eda .readByte ();_cg !=nil {return _cg ;};_eda ._ed <<=7;_eda ._fg -=7;_eda ._eg =0x8000;_eda ._gb ++;return nil ;};func (_gcb *DecoderStats )toggleMps (){_gcb ._cbc [_gcb ._ade ]^=1};func (_adab *DecoderStats )setEntry (_acf int ){_gdd :=byte (_acf &0x7f);_adab ._aa [_adab ._ade ]=_gdd ;};func (_gf *DecoderStats )Reset (){for _bc :=0;_bc < len (_gf ._aa