4 * Copyright 2003 Jon Griffiths
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 #include "wine/unicode.h"
23 static inline WCHAR to_unicode_digit( WCHAR ch )
25 extern const WCHAR wine_digitmap[];
26 return ch + wine_digitmap[wine_digitmap[ch >> 8] + (ch & 0xff)];
29 static inline WCHAR to_unicode_native( WCHAR ch )
31 extern const WCHAR wine_compatmap[];
32 return ch + wine_compatmap[wine_compatmap[ch >> 8] + (ch & 0xff)];
35 static const WCHAR wine_ligatures[] =
37 0x00c6, 0x00de, 0x00df, 0x00e6, 0x00fe, 0x0132, 0x0133, 0x0152,
38 0x0153, 0x01c4, 0x01c5, 0x01c6, 0x01c7, 0x01c8, 0x01c9, 0x01ca,
39 0x01cb, 0x01cc, 0x01e2, 0x01e3, 0x01f1, 0x01f2, 0x01f3, 0x01fc,
40 0x01fd, 0x05f0, 0x05f1, 0x05f2, 0xfb00, 0xfb01, 0xfb02, 0xfb03,
41 0xfb04, 0xfb05, 0xfb06
44 /* Unicode expanded ligatures */
45 static const WCHAR wine_expanded_ligatures[][4] =
56 { 'D',0x017d,'\0',1 },
57 { 'D',0x017e,'\0',1 },
58 { 'd',0x017e,'\0',1 },
65 { 0x0100,0x0112,'\0',1 },
66 { 0x0101,0x0113,'\0',1 },
70 { 0x00c1,0x00c9,'\0',1 },
71 { 0x00e1,0x00e9,'\0',1 },
72 { 0x05d5,0x05d5,'\0',1 },
73 { 0x05d5,0x05d9,'\0',1 },
74 { 0x05d9,0x05d9,'\0',1 },
80 { 0x017f,'t','\0',1 },
84 static inline int get_ligature_len( WCHAR wc )
86 int low = 0, high = sizeof(wine_ligatures)/sizeof(WCHAR) -1;
89 int pos = (low + high) / 2;
90 if (wine_ligatures[pos] < wc)
92 else if (wine_ligatures[pos] > wc)
95 return wine_expanded_ligatures[pos][3];
100 static inline const WCHAR* get_ligature( WCHAR wc )
102 static const WCHAR empty_ligature[] = { '\0','\0','\0', 0 };
103 int low = 0, high = sizeof(wine_ligatures)/sizeof(WCHAR) -1;
106 int pos = (low + high) / 2;
107 if (wine_ligatures[pos] < wc)
109 else if (wine_ligatures[pos] > wc)
112 return wine_expanded_ligatures[pos];
114 return empty_ligature;
117 /* fold a unicode string */
118 int wine_fold_string( int flags, const WCHAR *src, int srclen, WCHAR *dst, int dstlen )
120 WCHAR *dstbase = dst;
125 srclen = strlenW(src) + 1; /* Include terminating NUL in count */
129 /* Calculate the required size for dst */
132 if (flags & MAP_EXPAND_LIGATURES)
136 dstlen += get_ligature_len(*src);
140 else if (flags & MAP_COMPOSITE)
144 else if (flags & MAP_PRECOMPOSED)
156 /* Actually perform the mapping(s) specified */
157 for (i = 0; i < srclen; i++)
161 if (flags & MAP_EXPAND_LIGATURES)
163 expand = get_ligature(ch);
181 else if (flags & MAP_COMPOSITE)
185 else if (flags & MAP_PRECOMPOSED)
189 if (flags & MAP_FOLDDIGITS)
190 ch = to_unicode_digit(ch);
191 if (flags & MAP_FOLDCZONE)
192 ch = to_unicode_native(ch);
197 return dst - dstbase;