2 * $RCSId: xc/lib/fontconfig/src/fcstr.c,v 1.10 2002/08/31 22:17:32 keithp Exp $
4 * Copyright © 2000 Keith Packard
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that
9 * copyright notice and this permission notice appear in supporting
10 * documentation, and that the name of Keith Packard not be used in
11 * advertising or publicity pertaining to distribution of the software without
12 * specific, written prior permission. Keith Packard makes no
13 * representations about the suitability of this software for any purpose. It
14 * is provided "as is" without express or implied warranty.
16 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
18 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
22 * PERFORMANCE OF THIS SOFTWARE.
31 FcStrCopy (const FcChar8 *s)
38 len = strlen ((char *) s) + 1;
39 r = (FcChar8 *) malloc (len);
42 FcMemAlloc (FC_MEM_STRING, len);
48 FcStrPlus (const FcChar8 *s1, const FcChar8 *s2)
50 int l = strlen ((char *)s1) + strlen ((char *) s2) + 1;
51 FcChar8 *s = malloc (l);
55 FcMemAlloc (FC_MEM_STRING, l);
56 strcpy ((char *) s, (char *) s1);
57 strcat ((char *) s, (char *) s2);
62 FcStrFree (FcChar8 *s)
64 FcMemFree (FC_MEM_STRING, strlen ((char *) s) + 1);
69 #include "../fc-case/fccase.h"
71 #define FcCaseFoldUpperCount(cf) \
72 ((cf)->method == FC_CASE_FOLD_FULL ? 1 : (cf)->count)
74 #define FC_STR_CANON_BUF_LEN 1024
76 typedef struct _FcCaseWalker {
79 FcChar8 utf8[FC_MAX_CASE_FOLD_CHARS + 1];
83 FcStrCaseWalkerInit (const FcChar8 *src, FcCaseWalker *w)
90 FcStrCaseWalkerLong (FcCaseWalker *w, FcChar8 r)
94 int len = strlen((char*)w->src);
96 slen = FcUtf8ToUcs4 (w->src - 1, &ucs4, len + 1);
99 if (FC_MIN_FOLD_CHAR <= ucs4 && ucs4 <= FC_MAX_FOLD_CHAR)
102 int max = FC_NUM_CASE_FOLD;
106 int mid = (min + max) >> 1;
107 FcChar32 low = fcCaseFold[mid].upper;
108 FcChar32 high = low + FcCaseFoldUpperCount (&fcCaseFold[mid]);
116 const FcCaseFold *fold = &fcCaseFold[mid];
119 switch (fold->method) {
120 case FC_CASE_FOLD_EVEN_ODD:
121 if ((ucs4 & 1) != (fold->upper & 1))
123 /* fall through ... */
125 dlen = FcUcs4ToUtf8 (ucs4 + fold->offset, w->utf8);
127 case FC_CASE_FOLD_FULL:
129 memcpy (w->utf8, fcCaseFoldChars + fold->offset, dlen);
133 /* consume rest of src utf-8 bytes */
136 /* read from temp buffer */
137 w->utf8[dlen] = '\0';
147 FcStrCaseWalkerNext (FcCaseWalker *w)
153 if ((r = *w->read++))
159 if ((r & 0xc0) == 0xc0)
160 return FcStrCaseWalkerLong (w, r);
161 if ('A' <= r && r <= 'Z')
167 FcStrCaseWalkerNextIgnoreBlanks (FcCaseWalker *w)
173 if ((r = *w->read++))
182 if ((r & 0xc0) == 0xc0)
183 return FcStrCaseWalkerLong (w, r);
184 if ('A' <= r && r <= 'Z')
190 FcStrDowncase (const FcChar8 *s)
196 FcStrCaseWalkerInit (s, &w);
197 while (FcStrCaseWalkerNext (&w))
199 d = dst = malloc (len + 1);
202 FcMemAlloc (FC_MEM_STRING, len + 1);
203 FcStrCaseWalkerInit (s, &w);
204 while ((*d++ = FcStrCaseWalkerNext (&w)));
209 FcStrCmpIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
214 if (s1 == s2) return 0;
216 FcStrCaseWalkerInit (s1, &w1);
217 FcStrCaseWalkerInit (s2, &w2);
221 c1 = FcStrCaseWalkerNext (&w1);
222 c2 = FcStrCaseWalkerNext (&w2);
223 if (!c1 || (c1 != c2))
226 return (int) c1 - (int) c2;
230 FcStrCmpIgnoreBlanksAndCase (const FcChar8 *s1, const FcChar8 *s2)
235 if (s1 == s2) return 0;
237 FcStrCaseWalkerInit (s1, &w1);
238 FcStrCaseWalkerInit (s2, &w2);
242 c1 = FcStrCaseWalkerNextIgnoreBlanks (&w1);
243 c2 = FcStrCaseWalkerNextIgnoreBlanks (&w2);
244 if (!c1 || (c1 != c2))
247 return (int) c1 - (int) c2;
251 FcStrCmp (const FcChar8 *s1, const FcChar8 *s2)
264 return (int) c1 - (int) c2;
268 * Return a hash value for a string
272 FcStrHashIgnoreCase (const FcChar8 *s)
278 FcStrCaseWalkerInit (s, &w);
279 while ((c = FcStrCaseWalkerNext (&w)))
280 h = ((h << 3) ^ (h >> 3)) ^ c;
285 * Is the head of s1 equal to s2?
289 FcStrIsAtIgnoreBlanksAndCase (const FcChar8 *s1, const FcChar8 *s2)
294 FcStrCaseWalkerInit (s1, &w1);
295 FcStrCaseWalkerInit (s2, &w2);
299 c1 = FcStrCaseWalkerNextIgnoreBlanks (&w1);
300 c2 = FcStrCaseWalkerNextIgnoreBlanks (&w2);
301 if (!c1 || (c1 != c2))
304 return c1 == c2 || !c2;
308 * Does s1 contain an instance of s2 (ignoring blanks and case)?
312 FcStrContainsIgnoreBlanksAndCase (const FcChar8 *s1, const FcChar8 *s2)
316 if (FcStrIsAtIgnoreBlanksAndCase (s1, s2))
324 * Is the head of s1 equal to s2?
328 FcStrIsAtIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
333 FcStrCaseWalkerInit (s1, &w1);
334 FcStrCaseWalkerInit (s2, &w2);
338 c1 = FcStrCaseWalkerNext (&w1);
339 c2 = FcStrCaseWalkerNext (&w2);
340 if (!c1 || (c1 != c2))
343 return c1 == c2 || !c2;
347 * Does s1 contain an instance of s2 (ignoring blanks and case)?
351 FcStrContainsIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
355 if (FcStrIsAtIgnoreCase (s1, s2))
363 FcStrStrIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
375 FcStrCaseWalkerInit (s1, &w1);
376 FcStrCaseWalkerInit (s2, &w2);
378 c2 = FcStrCaseWalkerNext (&w2);
383 c1 = FcStrCaseWalkerNext (&w1);
388 FcCaseWalker w1t = w1;
389 FcCaseWalker w2t = w2;
394 c1t = FcStrCaseWalkerNext (&w1t);
395 c2t = FcStrCaseWalkerNext (&w2t);
408 FcStrStr (const FcChar8 *s1, const FcChar8 *s2)
411 const FcChar8 * p = s1;
412 const FcChar8 * b = s2;
441 if (c1 && c2 && c1 != c2)
458 FcUtf8ToUcs4 (const FcChar8 *src_orig,
462 const FcChar8 *src = src_orig;
478 else if (!(s & 0x40))
482 else if (!(s & 0x20))
487 else if (!(s & 0x10))
492 else if (!(s & 0x08))
497 else if (!(s & 0x04))
502 else if ( ! (s & 0x02))
519 if ((s & 0xc0) != 0x80)
525 return src - src_orig;
529 FcUtf8Len (const FcChar8 *string,
543 clen = FcUtf8ToUcs4 (string, &c, len);
544 if (clen <= 0) /* malformed UTF8 string */
555 else if (max > 0x100)
563 FcUcs4ToUtf8 (FcChar32 ucs4,
564 FcChar8 dest[FC_UTF8_MAX_LEN])
569 if (ucs4 < 0x80) { *d++= ucs4; bits= -6; }
570 else if (ucs4 < 0x800) { *d++= ((ucs4 >> 6) & 0x1F) | 0xC0; bits= 0; }
571 else if (ucs4 < 0x10000) { *d++= ((ucs4 >> 12) & 0x0F) | 0xE0; bits= 6; }
572 else if (ucs4 < 0x200000) { *d++= ((ucs4 >> 18) & 0x07) | 0xF0; bits= 12; }
573 else if (ucs4 < 0x4000000) { *d++= ((ucs4 >> 24) & 0x03) | 0xF8; bits= 18; }
574 else if (ucs4 < 0x80000000) { *d++= ((ucs4 >> 30) & 0x01) | 0xFC; bits= 24; }
577 for ( ; bits >= 0; bits-= 6) {
578 *d++= ((ucs4 >> bits) & 0x3F) | 0x80;
583 #define GetUtf16(src,endian) \
584 ((FcChar16) ((src)[endian == FcEndianBig ? 0 : 1] << 8) | \
585 (FcChar16) ((src)[endian == FcEndianBig ? 1 : 0]))
588 FcUtf16ToUcs4 (const FcChar8 *src_orig,
591 int len) /* in bytes */
593 const FcChar8 *src = src_orig;
600 a = GetUtf16 (src, endian); src += 2; len -= 2;
603 * Check for surrogate
605 if ((a & 0xfc00) == 0xd800)
609 b = GetUtf16 (src, endian); src += 2; len -= 2;
611 * Check for invalid surrogate sequence
613 if ((b & 0xfc00) != 0xdc00)
615 result = ((((FcChar32) a & 0x3ff) << 10) |
616 ((FcChar32) b & 0x3ff)) + 0x10000;
621 return src - src_orig;
625 FcUtf16Len (const FcChar8 *string,
627 int len, /* in bytes */
640 clen = FcUtf16ToUcs4 (string, endian, &c, len);
641 if (clen <= 0) /* malformed UTF8 string */
652 else if (max > 0x100)
660 FcStrBufInit (FcStrBuf *buf, FcChar8 *init, int size)
663 buf->allocated = FcFalse;
664 buf->failed = FcFalse;
670 FcStrBufDestroy (FcStrBuf *buf)
674 FcMemFree (FC_MEM_STRBUF, buf->size);
676 FcStrBufInit (buf, 0, 0);
681 FcStrBufDone (FcStrBuf *buf)
685 ret = malloc (buf->len + 1);
688 FcMemAlloc (FC_MEM_STRING, buf->len + 1);
689 memcpy (ret, buf->buf, buf->len);
690 ret[buf->len] = '\0';
692 FcStrBufDestroy (buf);
697 FcStrBufChar (FcStrBuf *buf, FcChar8 c)
699 if (buf->len == buf->size)
706 size = buf->size * 2;
707 new = realloc (buf->buf, size);
711 size = buf->size + 64;
715 buf->allocated = FcTrue;
716 memcpy (new, buf->buf, buf->len);
721 buf->failed = FcTrue;
725 FcMemFree (FC_MEM_STRBUF, buf->size);
726 FcMemAlloc (FC_MEM_STRBUF, size);
730 buf->buf[buf->len++] = c;
735 FcStrBufString (FcStrBuf *buf, const FcChar8 *s)
739 if (!FcStrBufChar (buf, c))
745 FcStrBufData (FcStrBuf *buf, const FcChar8 *s, int len)
748 if (!FcStrBufChar (buf, *s++))
754 FcStrUsesHome (const FcChar8 *s)
760 FcStrCopyFilename (const FcChar8 *s)
766 FcChar8 *home = FcConfigHome ();
771 size = strlen ((char *) home) + strlen ((char *) s);
772 full = (FcChar8 *) malloc (size);
775 strcpy ((char *) full, (char *) home);
776 strcat ((char *) full, (char *) s + 1);
777 new = FcStrCanonFilename (full);
781 new = FcStrCanonFilename (s);
786 FcStrLastSlash (const FcChar8 *path)
790 slash = (FcChar8 *) strrchr ((const char *) path, '/');
795 backslash = (FcChar8 *) strrchr ((const char *) path, '\\');
796 if (!slash || (backslash && backslash > slash))
805 FcStrDirname (const FcChar8 *file)
810 slash = FcStrLastSlash (file);
812 return FcStrCopy ((FcChar8 *) ".");
813 dir = malloc ((slash - file) + 1);
816 FcMemAlloc (FC_MEM_STRING, (slash - file) + 1);
817 strncpy ((char *) dir, (const char *) file, slash - file);
818 dir[slash - file] = '\0';
823 FcStrBasename (const FcChar8 *file)
827 slash = FcStrLastSlash (file);
829 return FcStrCopy (file);
830 return FcStrCopy (slash + 1);
834 FcStrCanonFilename (const FcChar8 *s)
838 const FcChar8 *slash;
845 FcChar8 cwd[FC_MAX_FILE_LEN + 2];
846 if (getcwd ((char *) cwd, FC_MAX_FILE_LEN) == NULL)
848 strcat ((char *) cwd, "/");
849 full = FcStrPlus (cwd, s);
850 file = FcStrCanonFilename (full);
854 size = strlen ((char *) s) + 1;
855 file = malloc (size);
858 FcMemAlloc (FC_MEM_STRING, size);
862 if (*s == '/' || *s == '\0')
868 if (!strncmp ((char *) slash, "/.", 2))
870 f -= 2; /* trim /. from file */
874 if (!strncmp ((char *) slash, "/..", 3))
876 f -= 3; /* trim /.. from file */
894 FcStrSetCreate (void)
896 FcStrSet *set = malloc (sizeof (FcStrSet));
899 FcMemAlloc (FC_MEM_STRSET, sizeof (FcStrSet));
908 _FcStrSetAppend (FcStrSet *set, FcChar8 *s)
910 if (FcStrSetMember (set, s))
915 if (set->num == set->size)
917 FcChar8 **strs = malloc ((set->size + 2) * sizeof (FcChar8 *));
921 FcMemAlloc (FC_MEM_STRSET, (set->size + 2) * sizeof (FcChar8 *));
922 set->size = set->size + 1;
924 memcpy (strs, set->strs, set->num * sizeof (FcChar8 *));
929 set->strs[set->num++] = s;
930 set->strs[set->num] = 0;
935 FcStrSetMember (FcStrSet *set, const FcChar8 *s)
939 for (i = 0; i < set->num; i++)
940 if (!FcStrCmp (set->strs[i], s))
946 FcStrSetEqual (FcStrSet *sa, FcStrSet *sb)
949 if (sa->num != sb->num)
951 for (i = 0; i < sa->num; i++)
952 if (!FcStrSetMember (sb, sa->strs[i]))
958 FcStrSetAdd (FcStrSet *set, const FcChar8 *s)
960 FcChar8 *new = FcStrCopy (s);
963 if (!_FcStrSetAppend (set, new))
972 FcStrSetAddFilename (FcStrSet *set, const FcChar8 *s)
974 FcChar8 *new = FcStrCopyFilename (s);
977 if (!_FcStrSetAppend (set, new))
986 FcStrSetDel (FcStrSet *set, const FcChar8 *s)
990 for (i = 0; i < set->num; i++)
991 if (!FcStrCmp (set->strs[i], s))
993 FcStrFree (set->strs[i]);
995 * copy remaining string pointers and trailing
998 memmove (&set->strs[i], &set->strs[i+1],
999 (set->num - i) * sizeof (FcChar8 *));
1007 FcStrSetDestroy (FcStrSet *set)
1009 if (--set->ref == 0)
1013 for (i = 0; i < set->num; i++)
1014 FcStrFree (set->strs[i]);
1015 FcMemFree (FC_MEM_STRSET, (set->size) * sizeof (FcChar8 *));
1018 FcMemFree (FC_MEM_STRSET, sizeof (FcStrSet));
1024 FcStrListCreate (FcStrSet *set)
1028 list = malloc (sizeof (FcStrList));
1031 FcMemAlloc (FC_MEM_STRLIST, sizeof (FcStrList));
1039 FcStrListNext (FcStrList *list)
1041 if (list->n >= list->set->num)
1043 return list->set->strs[list->n++];
1047 FcStrListDone (FcStrList *list)
1049 FcStrSetDestroy (list->set);
1050 FcMemFree (FC_MEM_STRLIST, sizeof (FcStrList));
1055 #include "fcaliastail.h"