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

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// DO NOT EDIT: generated by unitwist Go source code obfuscator.
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package arithmetic ;import (_fcf "fmt";_g "github.com/unidoc/unipdf/v3/common";_d "github.com/unidoc/unipdf/v3/internal/bitwise";_ef "github.com/unidoc/unipdf/v3/internal/jbig2/internal";_fc "io";_e "strings";);func (_dd *DecoderStats )SetIndex (index int32 ){_dd ._fec =index };
func (_efg *Decoder )DecodeBit (stats *DecoderStats )(int ,error ){var (_ee int ;_fg =_gf [stats .cx ()][0];_cg =int32 (stats .cx ()););defer func (){_efg ._fe ++}();_efg ._gg -=_fg ;if (_efg ._gd >>16)< uint64 (_fg ){_ee =_efg .lpsExchange (stats ,_cg ,_fg );
if _dg :=_efg .renormalize ();_dg !=nil {return 0,_dg ;};}else {_efg ._gd -=uint64 (_fg )<<16;if (_efg ._gg &0x8000)==0{_ee =_efg .mpsExchange (stats ,_cg );if _b :=_efg .renormalize ();_b !=nil {return 0,_b ;};}else {_ee =int (stats .getMps ());};};return _ee ,nil ;
};func (_bcf *Decoder )readByte ()error {if _bcf ._c .StreamPosition ()> _bcf ._ga {if _ ,_gdf :=_bcf ._c .Seek (-1,_fc .SeekCurrent );_gdf !=nil {return _gdf ;};};_cgc ,_bcfb :=_bcf ._c .ReadByte ();if _bcfb !=nil {return _bcfb ;};_bcf ._ed =_cgc ;if _bcf ._ed ==0xFF{_ag ,_ggc :=_bcf ._c .ReadByte ();
if _ggc !=nil {return _ggc ;};if _ag > 0x8F{_bcf ._gd +=0xFF00;_bcf ._fd =8;if _ ,_fa :=_bcf ._c .Seek (-2,_fc .SeekCurrent );_fa !=nil {return _fa ;};}else {_bcf ._gd +=uint64 (_ag )<<9;_bcf ._fd =7;};}else {_cgc ,_bcfb =_bcf ._c .ReadByte ();if _bcfb !=nil {return _bcfb ;
};_bcf ._ed =_cgc ;_bcf ._gd +=uint64 (_bcf ._ed )<<8;_bcf ._fd =8;};_bcf ._gd &=0xFFFFFFFFFF;return nil ;};func (_cff *Decoder )DecodeIAID (codeLen uint64 ,stats *DecoderStats )(int64 ,error ){_cff ._gc =1;var _dgd uint64 ;for _dgd =0;_dgd < codeLen ;
_dgd ++{stats .SetIndex (int32 (_cff ._gc ));_bc ,_de :=_cff .DecodeBit (stats );if _de !=nil {return 0,_de ;};_cff ._gc =(_cff ._gc <<1)|int64 (_bc );};_ce :=_cff ._gc -(1<<codeLen );return _ce ,nil ;};func (_fcg *DecoderStats )setEntry (_bff int ){_gdfa :=byte (_bff &0x7f);
_fcg ._gcda [_fcg ._fec ]=_gdfa ;};func (_ea *Decoder )lpsExchange (_aag *DecoderStats ,_af int32 ,_faa uint32 )int {_agf :=_aag .getMps ();if _ea ._gg < _faa {_aag .setEntry (int (_gf [_af ][1]));_ea ._gg =_faa ;return int (_agf );};if _gf [_af ][3]==1{_aag .toggleMps ();
};_aag .setEntry (int (_gf [_af ][2]));_ea ._gg =_faa ;return int (1-_agf );};func (_be *Decoder )init ()error {_be ._ga =_be ._c .StreamPosition ();_bef ,_ab :=_be ._c .ReadByte ();if _ab !=nil {_g .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",_ab );
return _ab ;};_be ._ed =_bef ;_be ._gd =uint64 (_bef )<<16;if _ab =_be .readByte ();_ab !=nil {return _ab ;};_be ._gd <<=7;_be ._fd -=7;_be ._gg =0x8000;_be ._fe ++;return nil ;};var (_gf =[][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 (_bccg *DecoderStats )getMps ()byte {return _bccg ._bcc [_bccg ._fec ]};func (_eb *Decoder )DecodeInt (stats *DecoderStats )(int32 ,error ){var (_gfc ,_edg int32 ;_bb ,_bbd ,_fef int ;_ge error ;);if stats ==nil {stats =NewStats (512,1);};_eb ._gc =1;
_bbd ,_ge =_eb .decodeIntBit (stats );if _ge !=nil {return 0,_ge ;};_bb ,_ge =_eb .decodeIntBit (stats );if _ge !=nil {return 0,_ge ;};if _bb ==1{_bb ,_ge =_eb .decodeIntBit (stats );if _ge !=nil {return 0,_ge ;};if _bb ==1{_bb ,_ge =_eb .decodeIntBit (stats );
if _ge !=nil {return 0,_ge ;};if _bb ==1{_bb ,_ge =_eb .decodeIntBit (stats );if _ge !=nil {return 0,_ge ;};if _bb ==1{_bb ,_ge =_eb .decodeIntBit (stats );if _ge !=nil {return 0,_ge ;};if _bb ==1{_fef =32;_edg =4436;}else {_fef =12;_edg =340;};}else {_fef =8;
_edg =84;};}else {_fef =6;_edg =20;};}else {_fef =4;_edg =4;};}else {_fef =2;_edg =0;};for _cf :=0;_cf < _fef ;_cf ++{_bb ,_ge =_eb .decodeIntBit (stats );if _ge !=nil {return 0,_ge ;};_gfc =(_gfc <<1)|int32 (_bb );};_gfc +=_edg ;if _bbd ==0{return _gfc ,nil ;
}else if _bbd ==1&&_gfc > 0{return -_gfc ,nil ;};return 0,_ef .ErrOOB ;};func (_gge *Decoder )mpsExchange (_dc *DecoderStats ,_ad int32 )int {_gcd :=_dc ._bcc [_dc ._fec ];if _gge ._gg < _gf [_ad ][0]{if _gf [_ad ][3]==1{_dc .toggleMps ();};_dc .setEntry (int (_gf [_ad ][2]));
return int (1-_gcd );};_dc .setEntry (int (_gf [_ad ][1]));return int (_gcd );};func (_cd *DecoderStats )cx ()byte {return _cd ._gcda [_cd ._fec ]};func (_gea *DecoderStats )String ()string {_cbf :=&_e .Builder {};_cbf .WriteString (_fcf .Sprintf ("S\u0074\u0061\u0074\u0073\u003a\u0020\u0020\u0025\u0064\u000a",len (_gea ._gcda )));
for _afd ,_fdf :=range _gea ._gcda {if _fdf !=0{_cbf .WriteString (_fcf .Sprintf ("N\u006f\u0074\u0020\u007aer\u006f \u0061\u0074\u003a\u0020\u0025d\u0020\u002d\u0020\u0025\u0064\u000a",_afd ,_fdf ));};};return _cbf .String ();};func NewStats (contextSize int32 ,index int32 )*DecoderStats {return &DecoderStats {_fec :index ,_df :contextSize ,_gcda :make ([]byte ,contextSize ),_bcc :make ([]byte ,contextSize )};
};func (_abf *Decoder )decodeIntBit (_aa *DecoderStats )(int ,error ){_aa .SetIndex (int32 (_abf ._gc ));_gff ,_bf :=_abf .DecodeBit (_aa );if _bf !=nil {_g .Log .Debug ("\u0041\u0072\u0069\u0074\u0068\u006d\u0065t\u0069\u0063\u0044e\u0063\u006f\u0064e\u0072\u0020'\u0064\u0065\u0063\u006f\u0064\u0065I\u006etB\u0069\u0074\u0027\u002d\u003e\u0020\u0044\u0065\u0063\u006f\u0064\u0065\u0042\u0069\u0074\u0020\u0066\u0061\u0069\u006c\u0065\u0064\u002e\u0020\u0025\u0076",_bf );
return _gff ,_bf ;};if _abf ._gc < 256{_abf ._gc =((_abf ._gc <<uint64 (1))|int64 (_gff ))&0x1ff;}else {_abf ._gc =(((_abf ._gc <<uint64 (1)|int64 (_gff ))&511)|256)&0x1ff;};return _gff ,nil ;};func (_gadb *DecoderStats )toggleMps (){_gadb ._bcc [_gadb ._fec ]^=1};
type DecoderStats struct{_fec int32 ;_df int32 ;_gcda []byte ;_bcc []byte ;};func (_bccc *DecoderStats )Reset (){for _ca :=0;_ca < len (_bccc ._gcda );_ca ++{_bccc ._gcda [_ca ]=0;_bccc ._bcc [_ca ]=0;};};type Decoder struct{ContextSize []uint32 ;ReferedToContextSize []uint32 ;
_c _d .StreamReader ;_ed uint8 ;_gd uint64 ;_gg uint32 ;_gc int64 ;_fd int32 ;_fe int32 ;_ga int64 ;};func (_abd *DecoderStats )Overwrite (dNew *DecoderStats ){for _bcca :=0;_bcca < len (_abd ._gcda );_bcca ++{_abd ._gcda [_bcca ]=dNew ._gcda [_bcca ];
_abd ._bcc [_bcca ]=dNew ._bcc [_bcca ];};};func New (r _d .StreamReader )(*Decoder ,error ){_efb :=&Decoder {_c :r ,ContextSize :[]uint32 {16,13,10,10},ReferedToContextSize :[]uint32 {13,10}};if _a :=_efb .init ();_a !=nil {return nil ,_a ;};return _efb ,nil ;
};func (_cbg *DecoderStats )Copy ()*DecoderStats {_dfe :=&DecoderStats {_df :_cbg ._df ,_gcda :make ([]byte ,_cbg ._df )};for _eef :=0;_eef < len (_cbg ._gcda );_eef ++{_dfe ._gcda [_eef ]=_cbg ._gcda [_eef ];};return _dfe ;};func (_gfa *Decoder )renormalize ()error {for {if _gfa ._fd ==0{if _cb :=_gfa .readByte ();
_cb !=nil {return _cb ;};};_gfa ._gg <<=1;_gfa ._gd <<=1;_gfa ._fd --;if (_gfa ._gg &0x8000)!=0{break ;};};_gfa ._gd &=0xffffffff;return nil ;};