forked from rururutan/ckw-mod
/
encoding.cpp
145 lines (138 loc) · 7.47 KB
/
encoding.cpp
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/*----------------------------------------------------------------------------
* Copyright 2004-2012 Kazuo Ishii <kish@wb3.so-net.ne.jp>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*--------------------------------------------------------------------------*/
#include "ckw.h"
#include <WinNls.h>
#include "encoding.h"
UINT surrogate_to_ucs(const UINT16 _src_high, const UINT16 _src_low)
{
UINT src_high = _src_high - 0xd800;
UINT src_low = _src_low - 0xdc00;
return (src_high << 10 | src_low) + 0x10000;
}
static const UINT _is_dblchar_table []={
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0x7FFFFFFF,0x000003FF,0xFFFFFFFF,
0xFFFFFFFF,0x00000000,0x00000000,0x00000000,0x00000000,0xFFFF0000,0xFFFFFFFF,0xFFFFFFFF,
0x0001FFFF,0x00000000,0x00000000,0x00000000,0x007F0000,
};
static const UINT _is_dblchar_table_cjk []={
0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00530180,0x00800000,0x00800400,
0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x1FFFE000,0x00200000,
0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x00000C00,0x00000000,
0x00180000,0x00420000,0x00000000,0x00000000,0xFFFE0000,0xFFFE03FB,0x000003FB,0x00000000,
0xFFFF0002,0xFFFFFFFF,0xCDA6FFFF,0x203403DC,0x00000001,0x00400000,0x0000007A,0x00004000,
0x00000000,0x00000000,0x01000020,0x20002018,0x001C0000,0xFFFFFFFC,0x003C0FFF,0x00000000,
0x00500000,0x00000000,0x90082634,0x80C17E87,0x00100000,0x0000330C,0x00000330,0x00000080,
0x00000002,0x00000000,0x04100200,0x00001800,0x00000000,0x00000000,0x00000000,0x00000000,
0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0xFFFFFFFC,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0xFFFFEFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFC3FFF,0x0007FFFF,0xFF000000,0xC030000F,
0x00032300,0x00020000,0xF3FFFFFC,0x87FFFFFF,0xFFFFFFFF,0xFFF29403,0x00000001,0x80000007,
0xFFFEFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFF0003FF,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,
0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0x0FFFFFFD,0xFFFC0000,0xFFFFFFFF,0x0003FFFF,
0x00000000,0x00000000,0x00000000,0x00000000,0xFFFFFFFC,0xFFFFFFFF,0xFFFFFFFF,0x00000007,
0x00000000,0x00000000,0x00000000,0x800001FC,
};
inline bool _is_dblchar(int idx){
return ( _is_dblchar_table[idx>>5] & 1<<(idx&31) ) ? true : false;
}
inline bool _is_dblchar_cjk(int idx){
return ( _is_dblchar_table_cjk[idx>>5] & 1<<(idx&31) ) ? true : false;
}
bool is_dblchar(UINT n){
if(n <= 0x004DFF){
if(n <= 0x0010FF) return false; /* U+000000 ~ U+0010FF (4352)*/
if(n <= 0x00115F) return true; /* U+001100 ~ U+00115F (96)*/
if(n <= 0x002328) return false; /* U+001160 ~ U+002328 (4553)*/
if(n <= 0x00232A) return true; /* U+002329 ~ U+00232A (2)*/
if(n <= 0x002E7F) return false; /* U+00232B ~ U+002E7F (2901)*/
if(n <= 0x00303F) return _is_dblchar(n-0x002E80+0); /* U+002E80 ~ U+00303F (448)*/
if(n <= 0x003247) return true; /* U+003040 ~ U+003247 (520)*/
if(n <= 0x00324F) return false; /* U+003248 ~ U+00324F (8)*/
if(n <= 0x004DBF) return true; /* U+003250 ~ U+004DBF (7024)*/
if(n <= 0x004DFF) return false; /* U+004DC0 ~ U+004DFF (64)*/
}
else if(n <= 0x00FFE6){
if(n <= 0x00A4CF) return true; /* U+004E00 ~ U+00A4CF (22224)*/
if(n <= 0x00A95F) return false; /* U+00A4D0 ~ U+00A95F (1168)*/
if(n <= 0x00A97C) return true; /* U+00A960 ~ U+00A97C (29)*/
if(n <= 0x00ABFF) return false; /* U+00A97D ~ U+00ABFF (643)*/
if(n <= 0x00D7A3) return true; /* U+00AC00 ~ U+00D7A3 (11172)*/
if(n <= 0x00F8FF) return false; /* U+00D7A4 ~ U+00F8FF (8540)*/
if(n <= 0x00FAFF) return true; /* U+00F900 ~ U+00FAFF (512)*/
if(n <= 0x00FE0F) return false; /* U+00FB00 ~ U+00FE0F (784)*/
if(n <= 0x00FFE6) return _is_dblchar(n-0x00FE10+448); /* U+00FE10 ~ U+00FFE6 (471)*/
}
else{
if(n <= 0x01AFFF) return false; /* U+00FFE7 ~ U+01AFFF (45081)*/
if(n <= 0x01B001) return true; /* U+01B000 ~ U+01B001 (2)*/
if(n <= 0x01F1FF) return false; /* U+01B002 ~ U+01F1FF (16894)*/
if(n <= 0x01F2FF) return true; /* U+01F200 ~ U+01F2FF (256)*/
if(n <= 0x01FFFF) return false; /* U+01F300 ~ U+01FFFF (3328)*/
if(n <= 0x02FFFD) return true; /* U+020000 ~ U+02FFFD (65534)*/
if(n <= 0x02FFFF) return false; /* U+02FFFE ~ U+02FFFF (2)*/
if(n <= 0x03FFFD) return true; /* U+030000 ~ U+03FFFD (65534)*/
if(n <= 0x10FFFF) return false; /* U+03FFFE ~ U+10FFFF (851970)*/
}
return false;
}
bool is_dblchar_cjk(UINT n){
if(n <= 0x004DFF){
if(n <= 0x000451) return _is_dblchar_cjk(n-0x000000); /* U+000000 ~ U+000451 (1106)*/
if(n <= 0x0010FF) return false; /* U+000452 ~ U+0010FF (3246)*/
if(n <= 0x00115F) return true; /* U+001100 ~ U+00115F (96)*/
if(n <= 0x00200F) return false; /* U+001160 ~ U+00200F (3760)*/
if(n <= 0x00277F) return _is_dblchar_cjk(n-0x002010+1106); /* U+002010 ~ U+00277F (1904)*/
if(n <= 0x002B54) return false; /* U+002780 ~ U+002B54 (981)*/
if(n <= 0x002B59) return true; /* U+002B55 ~ U+002B59 (5)*/
if(n <= 0x002E7F) return false; /* U+002B5A ~ U+002E7F (806)*/
if(n <= 0x00303F) return _is_dblchar_cjk(n-0x002E80+3010); /* U+002E80 ~ U+00303F (448)*/
if(n <= 0x004DBF) return true; /* U+003040 ~ U+004DBF (7552)*/
if(n <= 0x004DFF) return false; /* U+004DC0 ~ U+004DFF (64)*/
}
else if(n <= 0x00FFFD){
if(n <= 0x00A4CF) return true; /* U+004E00 ~ U+00A4CF (22224)*/
if(n <= 0x00A95F) return false; /* U+00A4D0 ~ U+00A95F (1168)*/
if(n <= 0x00A97C) return true; /* U+00A960 ~ U+00A97C (29)*/
if(n <= 0x00ABFF) return false; /* U+00A97D ~ U+00ABFF (643)*/
if(n <= 0x00D7A3) return true; /* U+00AC00 ~ U+00D7A3 (11172)*/
if(n <= 0x00DFFF) return false; /* U+00D7A4 ~ U+00DFFF (2140)*/
if(n <= 0x00FAFF) return true; /* U+00E000 ~ U+00FAFF (6912)*/
if(n <= 0x00FDFF) return false; /* U+00FB00 ~ U+00FDFF (768)*/
if(n <= 0x00FFFD) return _is_dblchar_cjk(n-0x00FE00+3458); /* U+00FE00 ~ U+00FFFD (510)*/
}
else if(n <= 0x03FFFD){
if(n <= 0x01AFFF) return false; /* U+00FFFE ~ U+01AFFF (45058)*/
if(n <= 0x01B001) return true; /* U+01B000 ~ U+01B001 (2)*/
if(n <= 0x01F0FF) return false; /* U+01B002 ~ U+01F0FF (16638)*/
if(n <= 0x01F77F) return true; /* U+01F100 ~ U+01F77F (1664)*/
if(n <= 0x01FFFF) return false; /* U+01F780 ~ U+01FFFF (2176)*/
if(n <= 0x02FFFD) return true; /* U+020000 ~ U+02FFFD (65534)*/
if(n <= 0x02FFFF) return false; /* U+02FFFE ~ U+02FFFF (2)*/
if(n <= 0x03FFFD) return true; /* U+030000 ~ U+03FFFD (65534)*/
}
else{
if(n <= 0x0E00FF) return false; /* U+03FFFE ~ U+0E00FF (655618)*/
if(n <= 0x0E01EF) return true; /* U+0E0100 ~ U+0E01EF (240)*/
if(n <= 0x0EFFFF) return false; /* U+0E01F0 ~ U+0EFFFF (65040)*/
if(n <= 0x0FFFFD) return true; /* U+0F0000 ~ U+0FFFFD (65534)*/
if(n <= 0x0FFFFF) return false; /* U+0FFFFE ~ U+0FFFFF (2)*/
if(n <= 0x10FFFD) return true; /* U+100000 ~ U+10FFFD (65534)*/
if(n <= 0x10FFFF) return false; /* U+10FFFE ~ U+10FFFF (2)*/
}
return false;
}