Something went wrong. Try again.
Reactos
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199/* * String folding * * Copyright 2003 Jon Griffiths * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */
#include "wine/unicode.h"
static inline WCHAR to_unicode_digit( WCHAR ch ){ extern const WCHAR wine_digitmap[] DECLSPEC_HIDDEN; return ch + wine_digitmap[wine_digitmap[ch >> 8] + (ch & 0xff)];}
static inline WCHAR to_unicode_native( WCHAR ch ){ extern const WCHAR wine_compatmap[] DECLSPEC_HIDDEN; return ch + wine_compatmap[wine_compatmap[ch >> 8] + (ch & 0xff)];}
static const WCHAR wine_ligatures[] ={ 0x00c6, 0x00de, 0x00df, 0x00e6, 0x00fe, 0x0132, 0x0133, 0x0152, 0x0153, 0x01c4, 0x01c5, 0x01c6, 0x01c7, 0x01c8, 0x01c9, 0x01ca, 0x01cb, 0x01cc, 0x01e2, 0x01e3, 0x01f1, 0x01f2, 0x01f3, 0x01fc, 0x01fd, 0x05f0, 0x05f1, 0x05f2, 0xfb00, 0xfb01, 0xfb02, 0xfb03, 0xfb04, 0xfb05, 0xfb06};
/* Unicode expanded ligatures */static const WCHAR wine_expanded_ligatures[][4] ={ { 'A','E','\0',1 }, { 'T','H','\0',1 }, { 's','s','\0',1 }, { 'a','e','\0',1 }, { 't','h','\0',1 }, { 'I','J','\0',1 }, { 'i','j','\0',1 }, { 'O','E','\0',1 }, { 'o','e','\0',1 }, { 'D',0x017d,'\0',1 }, { 'D',0x017e,'\0',1 }, { 'd',0x017e,'\0',1 }, { 'L','J','\0',1 }, { 'L','j','\0',1 }, { 'l','j','\0',1 }, { 'N','J','\0',1 }, { 'N','j','\0',1 }, { 'n','j','\0',1 }, { 0x0100,0x0112,'\0',1 }, { 0x0101,0x0113,'\0',1 }, { 'D','Z','\0',1 }, { 'D','z','\0',1 }, { 'd','z','\0',1 }, { 0x00c1,0x00c9,'\0',1 }, { 0x00e1,0x00e9,'\0',1 }, { 0x05d5,0x05d5,'\0',1 }, { 0x05d5,0x05d9,'\0',1 }, { 0x05d9,0x05d9,'\0',1 }, { 'f','f','\0',1 }, { 'f','i','\0',1 }, { 'f','l','\0',1 }, { 'f','f','i',2 }, { 'f','f','l',2 }, { 0x017f,'t','\0',1 }, { 's','t','\0',1 }};
static inline int get_ligature_len( WCHAR wc ){ int low = 0, high = sizeof(wine_ligatures)/sizeof(WCHAR) -1; while (low <= high) { int pos = (low + high) / 2; if (wine_ligatures[pos] < wc) low = pos + 1; else if (wine_ligatures[pos] > wc) high = pos - 1; else return wine_expanded_ligatures[pos][3]; } return 0;}
static inline const WCHAR* get_ligature( WCHAR wc ){ static const WCHAR empty_ligature[] = { '\0','\0','\0', 0 }; int low = 0, high = sizeof(wine_ligatures)/sizeof(WCHAR) -1; while (low <= high) { int pos = (low + high) / 2; if (wine_ligatures[pos] < wc) low = pos + 1; else if (wine_ligatures[pos] > wc) high = pos - 1; else return wine_expanded_ligatures[pos]; } return empty_ligature;}
/* fold a unicode string */int wine_fold_string( int flags, const WCHAR *src, int srclen, WCHAR *dst, int dstlen ){ WCHAR *dstbase = dst; const WCHAR *expand; int i;
if (srclen == -1) srclen = strlenW(src) + 1; /* Include terminating NUL in count */
if (!dstlen) { /* Calculate the required size for dst */ dstlen = srclen;
if (flags & MAP_EXPAND_LIGATURES) { while (srclen--) { dstlen += get_ligature_len(*src); src++; } } else if (flags & MAP_COMPOSITE) { /* FIXME */ } else if (flags & MAP_PRECOMPOSED) { /* FIXME */ } return dstlen; }
if (srclen > dstlen) return 0;
dstlen -= srclen;
/* Actually perform the mapping(s) specified */ for (i = 0; i < srclen; i++) { WCHAR ch = *src;
if (flags & MAP_EXPAND_LIGATURES) { expand = get_ligature(ch); if (expand[0]) { if (!dstlen--) return 0; dst[0] = expand[0]; if (expand[2]) { if (!dstlen--) return 0; *++dst = expand[1]; ch = expand[2]; } else ch = expand[1]; dst++; } } else if (flags & MAP_COMPOSITE) { /* FIXME */ } else if (flags & MAP_PRECOMPOSED) { /* FIXME */ } if (flags & MAP_FOLDDIGITS) ch = to_unicode_digit(ch); if (flags & MAP_FOLDCZONE) ch = to_unicode_native(ch);
*dst++ = ch; src++; } return dst - dstbase;}