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 (_c "fmt";_da "github.com/unidoc/unipdf/v3/common";_b "github.com/unidoc/unipdf/v3/internal/bitwise";_cb "github.com/unidoc/unipdf/v3/internal/jbig2/internal";_dd "io";_ddb "strings";);type Decoder struct{ContextSize []uint32 ;
ReferedToContextSize []uint32 ;_a _b .StreamReader ;_e uint8 ;_ea uint64 ;_ca uint32 ;_ad int64 ;_ec int32 ;_eb int32 ;_ee int64 ;};func NewStats (contextSize int32 ,index int32 )*DecoderStats {return &DecoderStats {_ga :index ,_daa :contextSize ,_eec :make ([]byte ,contextSize ),_dfd :make ([]byte ,contextSize )};
};func New (r _b .StreamReader )(*Decoder ,error ){_ed :=&Decoder {_a :r ,ContextSize :[]uint32 {16,13,10,10},ReferedToContextSize :[]uint32 {13,10}};if _dg :=_ed .init ();_dg !=nil {return nil ,_dg ;};return _ed ,nil ;};type DecoderStats struct{_ga int32 ;
_daa int32 ;_eec []byte ;_dfd []byte ;};func (_edc *DecoderStats )String ()string {_ebc :=&_ddb .Builder {};_ebc .WriteString (_c .Sprintf ("S\u0074\u0061\u0074\u0073\u003a\u0020\u0020\u0025\u0064\u000a",len (_edc ._eec )));for _be ,_cec :=range _edc ._eec {if _cec !=0{_ebc .WriteString (_c .Sprintf ("N\u006f\u0074\u0020\u007aer\u006f \u0061\u0074\u003a\u0020\u0025d\u0020\u002d\u0020\u0025\u0064\u000a",_be ,_cec ));
};};return _ebc .String ();};var (_cf =[][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 (_dfa *Decoder )init ()error {_dfa ._ee =_dfa ._a .StreamPosition ();_bg ,_edd :=_dfa ._a .ReadByte ();if _edd !=nil {_da .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",_edd );
return _edd ;};_dfa ._e =_bg ;_dfa ._ea =uint64 (_bg )<<16;if _edd =_dfa .readByte ();_edd !=nil {return _edd ;};_dfa ._ea <<=7;_dfa ._ec -=7;_dfa ._ca =0x8000;_dfa ._eb ++;return nil ;};func (_ag *Decoder )DecodeBit (stats *DecoderStats )(int ,error ){var (_af int ;
_f =_cf [stats .cx ()][0];_g =int32 (stats .cx ()););defer func (){_ag ._eb ++}();_ag ._ca -=_f ;if (_ag ._ea >>16)< uint64 (_f ){_af =_ag .lpsExchange (stats ,_g ,_f );if _cg :=_ag .renormalize ();_cg !=nil {return 0,_cg ;};}else {_ag ._ea -=uint64 (_f )<<16;
if (_ag ._ca &0x8000)==0{_af =_ag .mpsExchange (stats ,_g );if _eeb :=_ag .renormalize ();_eeb !=nil {return 0,_eeb ;};}else {_af =int (stats .getMps ());};};return _af ,nil ;};func (_ff *Decoder )readByte ()error {if _ff ._a .StreamPosition ()> _ff ._ee {if _ ,_adf :=_ff ._a .Seek (-1,_dd .SeekCurrent );
_adf !=nil {return _adf ;};};_fdb ,_ebf :=_ff ._a .ReadByte ();if _ebf !=nil {return _ebf ;};_ff ._e =_fdb ;if _ff ._e ==0xFF{_bf ,_bga :=_ff ._a .ReadByte ();if _bga !=nil {return _bga ;};if _bf > 0x8F{_ff ._ea +=0xFF00;_ff ._ec =8;if _ ,_bbb :=_ff ._a .Seek (-2,_dd .SeekCurrent );
_bbb !=nil {return _bbb ;};}else {_ff ._ea +=uint64 (_bf )<<9;_ff ._ec =7;};}else {_fdb ,_ebf =_ff ._a .ReadByte ();if _ebf !=nil {return _ebf ;};_ff ._e =_fdb ;_ff ._ea +=uint64 (_ff ._e )<<8;_ff ._ec =8;};_ff ._ea &=0xFFFFFFFFFF;return nil ;};func (_caf *Decoder )mpsExchange (_dcc *DecoderStats ,_fec int32 )int {_dcb :=_dcc ._dfd [_dcc ._ga ];
if _caf ._ca < _cf [_fec ][0]{if _cf [_fec ][3]==1{_dcc .toggleMps ();};_dcc .setEntry (int (_cf [_fec ][2]));return int (1-_dcb );};_dcc .setEntry (int (_cf [_fec ][1]));return int (_dcb );};func (_gb *Decoder )renormalize ()error {for {if _gb ._ec ==0{if _ab :=_gb .readByte ();
_ab !=nil {return _ab ;};};_gb ._ca <<=1;_gb ._ea <<=1;_gb ._ec --;if (_gb ._ca &0x8000)!=0{break ;};};_gb ._ea &=0xffffffff;return nil ;};func (_ffe *Decoder )lpsExchange (_dff *DecoderStats ,_ffd int32 ,_cae uint32 )int {_bgc :=_dff .getMps ();if _ffe ._ca < _cae {_dff .setEntry (int (_cf [_ffd ][1]));
_ffe ._ca =_cae ;return int (_bgc );};if _cf [_ffd ][3]==1{_dff .toggleMps ();};_dff .setEntry (int (_cf [_ffd ][2]));_ffe ._ca =_cae ;return int (1-_bgc );};func (_cfd *DecoderStats )getMps ()byte {return _cfd ._dfd [_cfd ._ga ]};func (_afe *DecoderStats )Reset (){for _ecb :=0;
_ecb < len (_afe ._eec );_ecb ++{_afe ._eec [_ecb ]=0;_afe ._dfd [_ecb ]=0;};};func (_fd *Decoder )DecodeIAID (codeLen uint64 ,stats *DecoderStats )(int64 ,error ){_fd ._ad =1;var _dad uint64 ;for _dad =0;_dad < codeLen ;_dad ++{stats .SetIndex (int32 (_fd ._ad ));
_fb ,_ce :=_fd .DecodeBit (stats );if _ce !=nil {return 0,_ce ;};_fd ._ad =(_fd ._ad <<1)|int64 (_fb );};_ba :=_fd ._ad -(1<<codeLen );return _ba ,nil ;};func (_cafg *DecoderStats )Overwrite (dNew *DecoderStats ){for _gd :=0;_gd < len (_cafg ._eec );_gd ++{_cafg ._eec [_gd ]=dNew ._eec [_gd ];
_cafg ._dfd [_gd ]=dNew ._dfd [_gd ];};};func (_ge *Decoder )DecodeInt (stats *DecoderStats )(int32 ,error ){var (_gg ,_ef int32 ;_geb ,_bb ,_df int ;_gee error ;);if stats ==nil {stats =NewStats (512,1);};_ge ._ad =1;_bb ,_gee =_ge .decodeIntBit (stats );
if _gee !=nil {return 0,_gee ;};_geb ,_gee =_ge .decodeIntBit (stats );if _gee !=nil {return 0,_gee ;};if _geb ==1{_geb ,_gee =_ge .decodeIntBit (stats );if _gee !=nil {return 0,_gee ;};if _geb ==1{_geb ,_gee =_ge .decodeIntBit (stats );if _gee !=nil {return 0,_gee ;
};if _geb ==1{_geb ,_gee =_ge .decodeIntBit (stats );if _gee !=nil {return 0,_gee ;};if _geb ==1{_geb ,_gee =_ge .decodeIntBit (stats );if _gee !=nil {return 0,_gee ;};if _geb ==1{_df =32;_ef =4436;}else {_df =12;_ef =340;};}else {_df =8;_ef =84;};}else {_df =6;
_ef =20;};}else {_df =4;_ef =4;};}else {_df =2;_ef =0;};for _fe :=0;_fe < _df ;_fe ++{_geb ,_gee =_ge .decodeIntBit (stats );if _gee !=nil {return 0,_gee ;};_gg =(_gg <<1)|int32 (_geb );};_gg +=_ef ;if _bb ==0{return _gg ,nil ;}else if _bb ==1&&_gg > 0{return -_gg ,nil ;
};return 0,_cb .ErrOOB ;};func (_bd *DecoderStats )SetIndex (index int32 ){_bd ._ga =index };func (_ecg *DecoderStats )toggleMps (){_ecg ._dfd [_ecg ._ga ]^=1};func (_dac *DecoderStats )cx ()byte {return _dac ._eec [_dac ._ga ]};func (_ae *DecoderStats )Copy ()*DecoderStats {_bc :=&DecoderStats {_daa :_ae ._daa ,_eec :make ([]byte ,_ae ._daa )};
for _ged :=0;_ged < len (_ae ._eec );_ged ++{_bc ._eec [_ged ]=_ae ._eec [_ged ];};return _bc ;};func (_bac *Decoder )decodeIntBit (_dc *DecoderStats )(int ,error ){_dc .SetIndex (int32 (_bac ._ad ));_dda ,_eg :=_bac .DecodeBit (_dc );if _eg !=nil {_da .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",_eg );
return _dda ,_eg ;};if _bac ._ad < 256{_bac ._ad =((_bac ._ad <<uint64 (1))|int64 (_dda ))&0x1ff;}else {_bac ._ad =(((_bac ._ad <<uint64 (1)|int64 (_dda ))&511)|256)&0x1ff;};return _dda ,nil ;};func (_fed *DecoderStats )setEntry (_efb int ){_gbe :=byte (_efb &0x7f);
_fed ._eec [_fed ._ga ]=_gbe };