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-rw-r--r--chromium/third_party/fontconfig/src/src/fcstr.c1400
1 files changed, 1400 insertions, 0 deletions
diff --git a/chromium/third_party/fontconfig/src/src/fcstr.c b/chromium/third_party/fontconfig/src/src/fcstr.c
new file mode 100644
index 00000000000..57071724315
--- /dev/null
+++ b/chromium/third_party/fontconfig/src/src/fcstr.c
@@ -0,0 +1,1400 @@
+/*
+ * fontconfig/src/fcstr.c
+ *
+ * Copyright © 2000 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the author(s) not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. The authors make no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "fcint.h"
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#ifdef HAVE_REGEX_H
+#include <regex.h>
+#endif
+
+
+/* Objects MT-safe for readonly access. */
+
+FcChar8 *
+FcStrCopy (const FcChar8 *s)
+{
+ return FcStrdup (s);
+}
+
+FcChar8 *
+FcStrPlus (const FcChar8 *s1, const FcChar8 *s2)
+{
+ int s1l = strlen ((char *) s1);
+ int s2l = strlen ((char *) s2);
+ int l = s1l + s2l + 1;
+ FcChar8 *s = malloc (l);
+
+ if (!s)
+ return 0;
+ memcpy (s, s1, s1l);
+ memcpy (s + s1l, s2, s2l + 1);
+ return s;
+}
+
+void
+FcStrFree (FcChar8 *s)
+{
+ free (s);
+}
+
+
+#include "../fc-case/fccase.h"
+
+#define FcCaseFoldUpperCount(cf) \
+ ((cf)->method == FC_CASE_FOLD_FULL ? 1 : (cf)->count)
+
+typedef struct _FcCaseWalker {
+ const FcChar8 *read;
+ const FcChar8 *src;
+ FcChar8 utf8[FC_MAX_CASE_FOLD_CHARS + 1];
+} FcCaseWalker;
+
+static void
+FcStrCaseWalkerInit (const FcChar8 *src, FcCaseWalker *w)
+{
+ w->src = src;
+ w->read = 0;
+}
+
+static FcChar8
+FcStrCaseWalkerLong (FcCaseWalker *w, FcChar8 r)
+{
+ FcChar32 ucs4;
+ int slen;
+ int len = strlen((char*)w->src);
+
+ slen = FcUtf8ToUcs4 (w->src - 1, &ucs4, len + 1);
+ if (slen <= 0)
+ return r;
+ if (FC_MIN_FOLD_CHAR <= ucs4 && ucs4 <= FC_MAX_FOLD_CHAR)
+ {
+ int min = 0;
+ int max = FC_NUM_CASE_FOLD;
+
+ while (min <= max)
+ {
+ int mid = (min + max) >> 1;
+ FcChar32 low = fcCaseFold[mid].upper;
+ FcChar32 high = low + FcCaseFoldUpperCount (&fcCaseFold[mid]);
+
+ if (high <= ucs4)
+ min = mid + 1;
+ else if (ucs4 < low)
+ max = mid - 1;
+ else
+ {
+ const FcCaseFold *fold = &fcCaseFold[mid];
+ int dlen;
+
+ switch (fold->method) {
+ case FC_CASE_FOLD_EVEN_ODD:
+ if ((ucs4 & 1) != (fold->upper & 1))
+ return r;
+ /* fall through ... */
+ default:
+ dlen = FcUcs4ToUtf8 (ucs4 + fold->offset, w->utf8);
+ break;
+ case FC_CASE_FOLD_FULL:
+ dlen = fold->count;
+ memcpy (w->utf8, fcCaseFoldChars + fold->offset, dlen);
+ break;
+ }
+
+ /* consume rest of src utf-8 bytes */
+ w->src += slen - 1;
+
+ /* read from temp buffer */
+ w->utf8[dlen] = '\0';
+ w->read = w->utf8;
+ return *w->read++;
+ }
+ }
+ }
+ return r;
+}
+
+static FcChar8
+FcStrCaseWalkerNext (FcCaseWalker *w, const char *delims)
+{
+ FcChar8 r;
+
+ if (w->read)
+ {
+ if ((r = *w->read++))
+ return r;
+ w->read = 0;
+ }
+ do
+ {
+ r = *w->src++;
+ } while (r != 0 && delims && strchr (delims, r));
+
+ if ((r & 0xc0) == 0xc0)
+ return FcStrCaseWalkerLong (w, r);
+ if ('A' <= r && r <= 'Z')
+ r = r - 'A' + 'a';
+ return r;
+}
+
+FcChar8 *
+FcStrDowncase (const FcChar8 *s)
+{
+ FcCaseWalker w;
+ int len = 0;
+ FcChar8 *dst, *d;
+
+ FcStrCaseWalkerInit (s, &w);
+ while (FcStrCaseWalkerNext (&w, NULL))
+ len++;
+ d = dst = malloc (len + 1);
+ if (!d)
+ return 0;
+ FcStrCaseWalkerInit (s, &w);
+ while ((*d++ = FcStrCaseWalkerNext (&w, NULL)));
+ return dst;
+}
+
+int
+FcStrCmpIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcCaseWalker w1, w2;
+ FcChar8 c1, c2;
+
+ if (s1 == s2) return 0;
+
+ FcStrCaseWalkerInit (s1, &w1);
+ FcStrCaseWalkerInit (s2, &w2);
+
+ for (;;)
+ {
+ c1 = FcStrCaseWalkerNext (&w1, NULL);
+ c2 = FcStrCaseWalkerNext (&w2, NULL);
+ if (!c1 || (c1 != c2))
+ break;
+ }
+ return (int) c1 - (int) c2;
+}
+
+int
+FcStrCmpIgnoreBlanksAndCase (const FcChar8 *s1, const FcChar8 *s2)
+{
+ return FcStrCmpIgnoreCaseAndDelims (s1, s2, (const FcChar8 *)" ");
+}
+
+int
+FcStrCmpIgnoreCaseAndDelims (const FcChar8 *s1, const FcChar8 *s2, const FcChar8 *delims)
+{
+ FcCaseWalker w1, w2;
+ FcChar8 c1, c2;
+
+ if (s1 == s2) return 0;
+
+ FcStrCaseWalkerInit (s1, &w1);
+ FcStrCaseWalkerInit (s2, &w2);
+
+ for (;;)
+ {
+ c1 = FcStrCaseWalkerNext (&w1, (const char *)delims);
+ c2 = FcStrCaseWalkerNext (&w2, (const char *)delims);
+ if (!c1 || (c1 != c2))
+ break;
+ }
+ return (int) c1 - (int) c2;
+}
+
+int
+FcStrCmp (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcChar8 c1, c2;
+
+ if (s1 == s2)
+ return 0;
+ for (;;)
+ {
+ c1 = *s1++;
+ c2 = *s2++;
+ if (!c1 || c1 != c2)
+ break;
+ }
+ return (int) c1 - (int) c2;
+}
+
+#ifdef USE_REGEX
+static FcBool
+_FcStrRegexCmp (const FcChar8 *s, const FcChar8 *regex, int cflags, int eflags)
+{
+ int ret = -1;
+ regex_t reg;
+
+ if ((ret = regcomp (&reg, (const char *)regex, cflags)) != 0)
+ {
+ if (FcDebug () & FC_DBG_MATCHV)
+ {
+ char buf[512];
+
+ regerror (ret, &reg, buf, 512);
+ printf("Regexp compile error: %s\n", buf);
+ }
+ return FcFalse;
+ }
+ ret = regexec (&reg, (const char *)s, 0, NULL, eflags);
+ if (ret != 0)
+ {
+ if (FcDebug () & FC_DBG_MATCHV)
+ {
+ char buf[512];
+
+ regerror (ret, &reg, buf, 512);
+ printf("Regexp exec error: %s\n", buf);
+ }
+ }
+ regfree (&reg);
+
+ return ret == 0 ? FcTrue : FcFalse;
+}
+#else
+# define _FcStrRegexCmp(_s_, _regex_, _cflags_, _eflags_) (FcFalse)
+#endif
+
+FcBool
+FcStrRegexCmp (const FcChar8 *s, const FcChar8 *regex)
+{
+ return _FcStrRegexCmp (s, regex, REG_EXTENDED | REG_NOSUB, 0);
+}
+
+FcBool
+FcStrRegexCmpIgnoreCase (const FcChar8 *s, const FcChar8 *regex)
+{
+ return _FcStrRegexCmp (s, regex, REG_EXTENDED | REG_NOSUB | REG_ICASE, 0);
+}
+
+/*
+ * Return a hash value for a string
+ */
+
+FcChar32
+FcStrHashIgnoreCase (const FcChar8 *s)
+{
+ FcChar32 h = 0;
+ FcCaseWalker w;
+ FcChar8 c;
+
+ FcStrCaseWalkerInit (s, &w);
+ while ((c = FcStrCaseWalkerNext (&w, NULL)))
+ h = ((h << 3) ^ (h >> 3)) ^ c;
+ return h;
+}
+
+/*
+ * Is the head of s1 equal to s2?
+ */
+
+static FcBool
+FcStrIsAtIgnoreBlanksAndCase (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcCaseWalker w1, w2;
+ FcChar8 c1, c2;
+
+ FcStrCaseWalkerInit (s1, &w1);
+ FcStrCaseWalkerInit (s2, &w2);
+
+ for (;;)
+ {
+ c1 = FcStrCaseWalkerNext (&w1, " ");
+ c2 = FcStrCaseWalkerNext (&w2, " ");
+ if (!c1 || (c1 != c2))
+ break;
+ }
+ return c1 == c2 || !c2;
+}
+
+/*
+ * Does s1 contain an instance of s2 (ignoring blanks and case)?
+ */
+
+const FcChar8 *
+FcStrContainsIgnoreBlanksAndCase (const FcChar8 *s1, const FcChar8 *s2)
+{
+ while (*s1)
+ {
+ if (FcStrIsAtIgnoreBlanksAndCase (s1, s2))
+ return s1;
+ s1++;
+ }
+ return 0;
+}
+
+static FcBool
+FcCharIsPunct (const FcChar8 c)
+{
+ if (c < '0')
+ return FcTrue;
+ if (c <= '9')
+ return FcFalse;
+ if (c < 'A')
+ return FcTrue;
+ if (c <= 'Z')
+ return FcFalse;
+ if (c < 'a')
+ return FcTrue;
+ if (c <= 'z')
+ return FcFalse;
+ if (c <= '~')
+ return FcTrue;
+ return FcFalse;
+}
+
+/*
+ * Is the head of s1 equal to s2?
+ */
+
+static FcBool
+FcStrIsAtIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcCaseWalker w1, w2;
+ FcChar8 c1, c2;
+
+ FcStrCaseWalkerInit (s1, &w1);
+ FcStrCaseWalkerInit (s2, &w2);
+
+ for (;;)
+ {
+ c1 = FcStrCaseWalkerNext (&w1, NULL);
+ c2 = FcStrCaseWalkerNext (&w2, NULL);
+ if (!c1 || (c1 != c2))
+ break;
+ }
+ return c1 == c2 || !c2;
+}
+
+/*
+ * Does s1 contain an instance of s2 (ignoring blanks and case)?
+ */
+
+const FcChar8 *
+FcStrContainsIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
+{
+ while (*s1)
+ {
+ if (FcStrIsAtIgnoreCase (s1, s2))
+ return s1;
+ s1++;
+ }
+ return 0;
+}
+
+/*
+ * Does s1 contain an instance of s2 on a word boundary (ignoring case)?
+ */
+
+const FcChar8 *
+FcStrContainsWord (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcBool wordStart = FcTrue;
+ int s1len = strlen ((char *) s1);
+ int s2len = strlen ((char *) s2);
+
+ while (s1len >= s2len)
+ {
+ if (wordStart &&
+ FcStrIsAtIgnoreCase (s1, s2) &&
+ (s1len == s2len || FcCharIsPunct (s1[s2len])))
+ {
+ return s1;
+ }
+ wordStart = FcFalse;
+ if (FcCharIsPunct (*s1))
+ wordStart = FcTrue;
+ s1++;
+ s1len--;
+ }
+ return 0;
+}
+
+/*
+ * returns the number of strings (ignoring delimitors and case) being matched
+ */
+
+int
+FcStrMatchIgnoreCaseAndDelims (const FcChar8 *s1, const FcChar8 *s2, const FcChar8 *delims)
+{
+ FcCaseWalker w1, w2;
+ FcChar8 c1, c2;
+
+ if (s1 == s2) return 0;
+
+ FcStrCaseWalkerInit (s1, &w1);
+ FcStrCaseWalkerInit (s2, &w2);
+
+ for (;;)
+ {
+ c1 = FcStrCaseWalkerNext (&w1, (const char *)delims);
+ c2 = FcStrCaseWalkerNext (&w2, (const char *)delims);
+ if (!c1 || (c1 != c2))
+ break;
+ }
+ return w1.src - s1 - 1;
+}
+
+FcBool
+FcStrGlobMatch (const FcChar8 *glob,
+ const FcChar8 *string)
+{
+ FcChar8 c;
+
+ while ((c = *glob++))
+ {
+ switch (c) {
+ case '*':
+ /* short circuit common case */
+ if (!*glob)
+ return FcTrue;
+ /* short circuit another common case */
+ if (strchr ((char *) glob, '*') == 0)
+ {
+ size_t l1, l2;
+
+ l1 = strlen ((char *) string);
+ l2 = strlen ((char *) glob);
+ if (l1 < l2)
+ return FcFalse;
+ string += (l1 - l2);
+ }
+ while (*string)
+ {
+ if (FcStrGlobMatch (glob, string))
+ return FcTrue;
+ string++;
+ }
+ return FcFalse;
+ case '?':
+ if (*string++ == '\0')
+ return FcFalse;
+ break;
+ default:
+ if (*string++ != c)
+ return FcFalse;
+ break;
+ }
+ }
+ return *string == '\0';
+}
+
+const FcChar8 *
+FcStrStrIgnoreCase (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcCaseWalker w1, w2;
+ FcChar8 c1, c2;
+ const FcChar8 *cur;
+
+ if (!s1 || !s2)
+ return 0;
+
+ if (s1 == s2)
+ return s1;
+
+ FcStrCaseWalkerInit (s1, &w1);
+ FcStrCaseWalkerInit (s2, &w2);
+
+ c2 = FcStrCaseWalkerNext (&w2, NULL);
+
+ for (;;)
+ {
+ cur = w1.src;
+ c1 = FcStrCaseWalkerNext (&w1, NULL);
+ if (!c1)
+ break;
+ if (c1 == c2)
+ {
+ FcCaseWalker w1t = w1;
+ FcCaseWalker w2t = w2;
+ FcChar8 c1t, c2t;
+
+ for (;;)
+ {
+ c1t = FcStrCaseWalkerNext (&w1t, NULL);
+ c2t = FcStrCaseWalkerNext (&w2t, NULL);
+
+ if (!c2t)
+ return cur;
+ if (c2t != c1t)
+ break;
+ }
+ }
+ }
+ return 0;
+}
+
+const FcChar8 *
+FcStrStr (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcChar8 c1, c2;
+ const FcChar8 * p = s1;
+ const FcChar8 * b = s2;
+
+ if (!s1 || !s2)
+ return 0;
+
+ if (s1 == s2)
+ return s1;
+
+again:
+ c2 = *s2++;
+
+ if (!c2)
+ return 0;
+
+ for (;;)
+ {
+ p = s1;
+ c1 = *s1++;
+ if (!c1 || c1 == c2)
+ break;
+ }
+
+ if (c1 != c2)
+ return 0;
+
+ for (;;)
+ {
+ c1 = *s1;
+ c2 = *s2;
+ if (c1 && c2 && c1 != c2)
+ {
+ s1 = p + 1;
+ s2 = b;
+ goto again;
+ }
+ if (!c2)
+ return p;
+ if (!c1)
+ return 0;
+ ++ s1;
+ ++ s2;
+ }
+ /* never reached. */
+}
+
+int
+FcUtf8ToUcs4 (const FcChar8 *src_orig,
+ FcChar32 *dst,
+ int len)
+{
+ const FcChar8 *src = src_orig;
+ FcChar8 s;
+ int extra;
+ FcChar32 result;
+
+ if (len == 0)
+ return 0;
+
+ s = *src++;
+ len--;
+
+ if (!(s & 0x80))
+ {
+ result = s;
+ extra = 0;
+ }
+ else if (!(s & 0x40))
+ {
+ return -1;
+ }
+ else if (!(s & 0x20))
+ {
+ result = s & 0x1f;
+ extra = 1;
+ }
+ else if (!(s & 0x10))
+ {
+ result = s & 0xf;
+ extra = 2;
+ }
+ else if (!(s & 0x08))
+ {
+ result = s & 0x07;
+ extra = 3;
+ }
+ else if (!(s & 0x04))
+ {
+ result = s & 0x03;
+ extra = 4;
+ }
+ else if ( ! (s & 0x02))
+ {
+ result = s & 0x01;
+ extra = 5;
+ }
+ else
+ {
+ return -1;
+ }
+ if (extra > len)
+ return -1;
+
+ while (extra--)
+ {
+ result <<= 6;
+ s = *src++;
+
+ if ((s & 0xc0) != 0x80)
+ return -1;
+
+ result |= s & 0x3f;
+ }
+ *dst = result;
+ return src - src_orig;
+}
+
+FcBool
+FcUtf8Len (const FcChar8 *string,
+ int len,
+ int *nchar,
+ int *wchar)
+{
+ int n;
+ int clen;
+ FcChar32 c;
+ FcChar32 max;
+
+ n = 0;
+ max = 0;
+ while (len)
+ {
+ clen = FcUtf8ToUcs4 (string, &c, len);
+ if (clen <= 0) /* malformed UTF8 string */
+ return FcFalse;
+ if (c > max)
+ max = c;
+ string += clen;
+ len -= clen;
+ n++;
+ }
+ *nchar = n;
+ if (max >= 0x10000)
+ *wchar = 4;
+ else if (max > 0x100)
+ *wchar = 2;
+ else
+ *wchar = 1;
+ return FcTrue;
+}
+
+int
+FcUcs4ToUtf8 (FcChar32 ucs4,
+ FcChar8 dest[FC_UTF8_MAX_LEN])
+{
+ int bits;
+ FcChar8 *d = dest;
+
+ if (ucs4 < 0x80) { *d++= ucs4; bits= -6; }
+ else if (ucs4 < 0x800) { *d++= ((ucs4 >> 6) & 0x1F) | 0xC0; bits= 0; }
+ else if (ucs4 < 0x10000) { *d++= ((ucs4 >> 12) & 0x0F) | 0xE0; bits= 6; }
+ else if (ucs4 < 0x200000) { *d++= ((ucs4 >> 18) & 0x07) | 0xF0; bits= 12; }
+ else if (ucs4 < 0x4000000) { *d++= ((ucs4 >> 24) & 0x03) | 0xF8; bits= 18; }
+ else if (ucs4 < 0x80000000) { *d++= ((ucs4 >> 30) & 0x01) | 0xFC; bits= 24; }
+ else return 0;
+
+ for ( ; bits >= 0; bits-= 6) {
+ *d++= ((ucs4 >> bits) & 0x3F) | 0x80;
+ }
+ return d - dest;
+}
+
+#define GetUtf16(src,endian) \
+ ((FcChar16) ((src)[endian == FcEndianBig ? 0 : 1] << 8) | \
+ (FcChar16) ((src)[endian == FcEndianBig ? 1 : 0]))
+
+int
+FcUtf16ToUcs4 (const FcChar8 *src_orig,
+ FcEndian endian,
+ FcChar32 *dst,
+ int len) /* in bytes */
+{
+ const FcChar8 *src = src_orig;
+ FcChar16 a, b;
+ FcChar32 result;
+
+ if (len < 2)
+ return 0;
+
+ a = GetUtf16 (src, endian); src += 2; len -= 2;
+
+ /*
+ * Check for surrogate
+ */
+ if ((a & 0xfc00) == 0xd800)
+ {
+ if (len < 2)
+ return 0;
+ b = GetUtf16 (src, endian); src += 2; len -= 2;
+ /*
+ * Check for invalid surrogate sequence
+ */
+ if ((b & 0xfc00) != 0xdc00)
+ return 0;
+ result = ((((FcChar32) a & 0x3ff) << 10) |
+ ((FcChar32) b & 0x3ff)) + 0x10000;
+ }
+ else
+ result = a;
+ *dst = result;
+ return src - src_orig;
+}
+
+FcBool
+FcUtf16Len (const FcChar8 *string,
+ FcEndian endian,
+ int len, /* in bytes */
+ int *nchar,
+ int *wchar)
+{
+ int n;
+ int clen;
+ FcChar32 c;
+ FcChar32 max;
+
+ n = 0;
+ max = 0;
+ while (len)
+ {
+ clen = FcUtf16ToUcs4 (string, endian, &c, len);
+ if (clen <= 0) /* malformed UTF8 string */
+ return FcFalse;
+ if (c > max)
+ max = c;
+ string += clen;
+ len -= clen;
+ n++;
+ }
+ *nchar = n;
+ if (max >= 0x10000)
+ *wchar = 4;
+ else if (max > 0x100)
+ *wchar = 2;
+ else
+ *wchar = 1;
+ return FcTrue;
+}
+
+void
+FcStrBufInit (FcStrBuf *buf, FcChar8 *init, int size)
+{
+ if (init)
+ {
+ buf->buf = init;
+ buf->size = size;
+ } else
+ {
+ buf->buf = buf->buf_static;
+ buf->size = sizeof (buf->buf_static);
+ }
+ buf->allocated = FcFalse;
+ buf->failed = FcFalse;
+ buf->len = 0;
+}
+
+void
+FcStrBufDestroy (FcStrBuf *buf)
+{
+ if (buf->allocated)
+ {
+ free (buf->buf);
+ FcStrBufInit (buf, 0, 0);
+ }
+}
+
+FcChar8 *
+FcStrBufDone (FcStrBuf *buf)
+{
+ FcChar8 *ret;
+
+ if (buf->failed)
+ ret = NULL;
+ else
+ ret = malloc (buf->len + 1);
+ if (ret)
+ {
+ memcpy (ret, buf->buf, buf->len);
+ ret[buf->len] = '\0';
+ }
+ FcStrBufDestroy (buf);
+ return ret;
+}
+
+FcChar8 *
+FcStrBufDoneStatic (FcStrBuf *buf)
+{
+ FcStrBufChar (buf, '\0');
+
+ if (buf->failed)
+ return NULL;
+
+ return buf->buf;
+}
+
+FcBool
+FcStrBufChar (FcStrBuf *buf, FcChar8 c)
+{
+ if (buf->len == buf->size)
+ {
+ FcChar8 *new;
+ int size;
+
+ if (buf->failed)
+ return FcFalse;
+
+ if (buf->allocated)
+ {
+ size = buf->size * 2;
+ new = realloc (buf->buf, size);
+ }
+ else
+ {
+ size = buf->size + 64;
+ new = malloc (size);
+ if (new)
+ {
+ buf->allocated = FcTrue;
+ memcpy (new, buf->buf, buf->len);
+ }
+ }
+ if (!new)
+ {
+ buf->failed = FcTrue;
+ return FcFalse;
+ }
+ buf->size = size;
+ buf->buf = new;
+ }
+ buf->buf[buf->len++] = c;
+ return FcTrue;
+}
+
+FcBool
+FcStrBufString (FcStrBuf *buf, const FcChar8 *s)
+{
+ FcChar8 c;
+ while ((c = *s++))
+ if (!FcStrBufChar (buf, c))
+ return FcFalse;
+ return FcTrue;
+}
+
+FcBool
+FcStrBufData (FcStrBuf *buf, const FcChar8 *s, int len)
+{
+ while (len-- > 0)
+ if (!FcStrBufChar (buf, *s++))
+ return FcFalse;
+ return FcTrue;
+}
+
+FcBool
+FcStrUsesHome (const FcChar8 *s)
+{
+ return *s == '~';
+}
+
+FcChar8 *
+FcStrBuildFilename (const FcChar8 *path,
+ ...)
+{
+ va_list ap;
+ FcStrSet *sset = FcStrSetCreate ();
+ FcStrList *list;
+ FcChar8 *s, *ret = NULL, *p;
+ size_t len = 0;
+
+ if (!sset || !path)
+ return NULL;
+
+ if (!FcStrSetAdd (sset, path))
+ goto bail0;
+
+ va_start (ap, path);
+ while (1)
+ {
+ s = (FcChar8 *)va_arg (ap, FcChar8 *);
+ if (!s)
+ break;
+ if (!FcStrSetAdd (sset, s))
+ goto bail1;
+ }
+ list = FcStrListCreate (sset);
+ while ((s = FcStrListNext (list)))
+ {
+ len += strlen ((const char *)s) + 1;
+ }
+ list->n = 0;
+ ret = malloc (sizeof (FcChar8) * (len + 1));
+ if (!ret)
+ goto bail2;
+ p = ret;
+ while ((s = FcStrListNext (list)))
+ {
+ if (p != ret)
+ {
+ p[0] = FC_DIR_SEPARATOR;
+ p++;
+ }
+ len = strlen ((const char *)s);
+ memcpy (p, s, len);
+ p += len;
+ }
+ *p = 0;
+
+bail2:
+ FcStrListDone (list);
+bail1:
+ va_end (ap);
+bail0:
+ FcStrSetDestroy (sset);
+
+ return ret;
+}
+
+FcChar8 *
+FcStrCopyFilename (const FcChar8 *s)
+{
+ FcChar8 *new;
+
+ if (*s == '~')
+ {
+ FcChar8 *home = FcConfigHome ();
+ FcChar8 *full;
+ int size;
+ if (!home)
+ return NULL;
+ size = strlen ((char *) home) + strlen ((char *) s);
+ full = (FcChar8 *) malloc (size);
+ if (!full)
+ return NULL;
+ strcpy ((char *) full, (char *) home);
+ strcat ((char *) full, (char *) s + 1);
+ new = FcStrCanonFilename (full);
+ free (full);
+ }
+ else
+ new = FcStrCanonFilename (s);
+
+ return new;
+}
+
+FcChar8 *
+FcStrLastSlash (const FcChar8 *path)
+{
+ FcChar8 *slash;
+
+ slash = (FcChar8 *) strrchr ((const char *) path, '/');
+#ifdef _WIN32
+ {
+ FcChar8 *backslash;
+
+ backslash = (FcChar8 *) strrchr ((const char *) path, '\\');
+ if (!slash || (backslash && backslash > slash))
+ slash = backslash;
+ }
+#endif
+
+ return slash;
+}
+
+FcChar8 *
+FcStrDirname (const FcChar8 *file)
+{
+ FcChar8 *slash;
+ FcChar8 *dir;
+
+ slash = FcStrLastSlash (file);
+ if (!slash)
+ return FcStrCopy ((FcChar8 *) ".");
+ dir = malloc ((slash - file) + 1);
+ if (!dir)
+ return 0;
+ strncpy ((char *) dir, (const char *) file, slash - file);
+ dir[slash - file] = '\0';
+ return dir;
+}
+
+FcChar8 *
+FcStrBasename (const FcChar8 *file)
+{
+ FcChar8 *slash;
+
+ slash = FcStrLastSlash (file);
+ if (!slash)
+ return FcStrCopy (file);
+ return FcStrCopy (slash + 1);
+}
+
+static FcChar8 *
+FcStrCanonAbsoluteFilename (const FcChar8 *s)
+{
+ FcChar8 *file;
+ FcChar8 *f;
+ const FcChar8 *slash;
+ int size;
+
+ size = strlen ((char *) s) + 1;
+ file = malloc (size);
+ if (!file)
+ return NULL;
+ slash = NULL;
+ f = file;
+#ifdef _WIN32
+ if (*s == '/' && *(s+1) == '/') /* Network path, do not squash // */
+ *f++ = *s++;
+#endif
+ for (;;) {
+ if (*s == '/' || *s == '\0')
+ {
+ if (slash)
+ {
+ switch (s - slash) {
+ case 1:
+ f -= 1; /* squash // and trim final / from file */
+ break;
+ case 2:
+ if (!strncmp ((char *) slash, "/.", 2))
+ {
+ f -= 2; /* trim /. from file */
+ }
+ break;
+ case 3:
+ if (!strncmp ((char *) slash, "/..", 3))
+ {
+ f -= 3; /* trim /.. from file */
+ while (f > file) {
+ if (*--f == '/')
+ break;
+ }
+ }
+ break;
+ }
+ }
+ slash = s;
+ }
+ if (!(*f++ = *s++))
+ break;
+ }
+ return file;
+}
+
+#ifdef _WIN32
+/*
+ * Convert '\\' to '/' , remove double '/'
+ */
+static void
+FcConvertDosPath (char *str)
+{
+ size_t len = strlen (str);
+ char *p = str;
+ char *dest = str;
+ char *end = str + len;
+ char last = 0;
+
+ if (*p == '\\')
+ {
+ *p = '/';
+ p++;
+ dest++;
+ }
+ while (p < end)
+ {
+ if (*p == '\\')
+ *p = '/';
+
+ if (*p != '/'
+ || last != '/')
+ {
+ *dest++ = *p;
+ }
+
+ last = *p;
+ p++;
+ }
+
+ *dest = 0;
+}
+#endif
+
+FcChar8 *
+FcStrCanonFilename (const FcChar8 *s)
+{
+#ifdef _WIN32
+ FcChar8 full[FC_MAX_FILE_LEN + 2];
+ int size = GetFullPathName ((LPCSTR) s, sizeof (full) -1,
+ (LPSTR) full, NULL);
+
+ if (size == 0)
+ perror ("GetFullPathName");
+
+ FcConvertDosPath ((char *) full);
+ return FcStrCanonAbsoluteFilename (full);
+#else
+ if (s[0] == '/')
+ return FcStrCanonAbsoluteFilename (s);
+ else
+ {
+ FcChar8 *full;
+ FcChar8 *file;
+
+ FcChar8 cwd[FC_MAX_FILE_LEN + 2];
+ if (getcwd ((char *) cwd, FC_MAX_FILE_LEN) == NULL)
+ return NULL;
+ full = FcStrBuildFilename (cwd, s, NULL);
+ file = FcStrCanonAbsoluteFilename (full);
+ FcStrFree (full);
+ return file;
+ }
+#endif
+}
+
+
+FcStrSet *
+FcStrSetCreate (void)
+{
+ FcStrSet *set = malloc (sizeof (FcStrSet));
+ if (!set)
+ return 0;
+ FcRefInit (&set->ref, 1);
+ set->num = 0;
+ set->size = 0;
+ set->strs = 0;
+ return set;
+}
+
+static FcBool
+_FcStrSetAppend (FcStrSet *set, FcChar8 *s)
+{
+ if (FcStrSetMember (set, s))
+ {
+ FcStrFree (s);
+ return FcTrue;
+ }
+ if (set->num == set->size)
+ {
+ FcChar8 **strs = malloc ((set->size + 2) * sizeof (FcChar8 *));
+
+ if (!strs)
+ return FcFalse;
+ if (set->num)
+ memcpy (strs, set->strs, set->num * sizeof (FcChar8 *));
+ if (set->strs)
+ free (set->strs);
+ set->size = set->size + 1;
+ set->strs = strs;
+ }
+ set->strs[set->num++] = s;
+ set->strs[set->num] = 0;
+ return FcTrue;
+}
+
+FcBool
+FcStrSetMember (FcStrSet *set, const FcChar8 *s)
+{
+ int i;
+
+ for (i = 0; i < set->num; i++)
+ if (!FcStrCmp (set->strs[i], s))
+ return FcTrue;
+ return FcFalse;
+}
+
+FcBool
+FcStrSetEqual (FcStrSet *sa, FcStrSet *sb)
+{
+ int i;
+ if (sa->num != sb->num)
+ return FcFalse;
+ for (i = 0; i < sa->num; i++)
+ if (!FcStrSetMember (sb, sa->strs[i]))
+ return FcFalse;
+ return FcTrue;
+}
+
+FcBool
+FcStrSetAdd (FcStrSet *set, const FcChar8 *s)
+{
+ FcChar8 *new = FcStrCopy (s);
+ if (!new)
+ return FcFalse;
+ if (!_FcStrSetAppend (set, new))
+ {
+ FcStrFree (new);
+ return FcFalse;
+ }
+ return FcTrue;
+}
+
+FcBool
+FcStrSetAddFilename (FcStrSet *set, const FcChar8 *s)
+{
+ FcChar8 *new = FcStrCopyFilename (s);
+ if (!new)
+ return FcFalse;
+ if (!_FcStrSetAppend (set, new))
+ {
+ FcStrFree (new);
+ return FcFalse;
+ }
+ return FcTrue;
+}
+
+FcBool
+FcStrSetAddLangs (FcStrSet *strs, const char *languages)
+{
+ const char *p = languages, *next;
+ FcChar8 lang[128] = {0}, *normalized_lang;
+ size_t len;
+ FcBool ret = FcFalse;
+
+ if (!languages)
+ return FcFalse;
+
+ while ((next = strchr (p, ':')))
+ {
+ len = next - p;
+ len = FC_MIN (len, 127);
+ strncpy ((char *) lang, p, len);
+ lang[len] = 0;
+ /* ignore an empty item */
+ if (*lang)
+ {
+ normalized_lang = FcLangNormalize ((const FcChar8 *) lang);
+ if (normalized_lang)
+ {
+ FcStrSetAdd (strs, normalized_lang);
+ FcStrFree (normalized_lang);
+ ret = FcTrue;
+ }
+ }
+ p = next + 1;
+ }
+ if (*p)
+ {
+ normalized_lang = FcLangNormalize ((const FcChar8 *) p);
+ if (normalized_lang)
+ {
+ FcStrSetAdd (strs, normalized_lang);
+ FcStrFree (normalized_lang);
+ ret = FcTrue;
+ }
+ }
+
+ return ret;
+}
+
+FcBool
+FcStrSetDel (FcStrSet *set, const FcChar8 *s)
+{
+ int i;
+
+ for (i = 0; i < set->num; i++)
+ if (!FcStrCmp (set->strs[i], s))
+ {
+ FcStrFree (set->strs[i]);
+ /*
+ * copy remaining string pointers and trailing
+ * NULL
+ */
+ memmove (&set->strs[i], &set->strs[i+1],
+ (set->num - i) * sizeof (FcChar8 *));
+ set->num--;
+ return FcTrue;
+ }
+ return FcFalse;
+}
+
+/* TODO Make public */
+static FcStrSet *
+FcStrSetReference (FcStrSet *set)
+{
+ if (FcRefIsConst (&set->ref))
+ return set;
+
+ FcRefInc (&set->ref);
+ return set;
+}
+
+void
+FcStrSetDestroy (FcStrSet *set)
+{
+ int i;
+
+ /* We rely on this in FcGetDefaultLangs for caching. */
+ if (FcRefIsConst (&set->ref))
+ return;
+
+ if (FcRefDec (&set->ref) != 1)
+ return;
+
+ for (i = 0; i < set->num; i++)
+ FcStrFree (set->strs[i]);
+ if (set->strs)
+ free (set->strs);
+ free (set);
+}
+
+FcStrList *
+FcStrListCreate (FcStrSet *set)
+{
+ FcStrList *list;
+
+ list = malloc (sizeof (FcStrList));
+ if (!list)
+ return 0;
+ list->set = set;
+ FcStrSetReference (set);
+ list->n = 0;
+ return list;
+}
+
+void
+FcStrListFirst (FcStrList *list)
+{
+ list->n = 0;
+}
+
+FcChar8 *
+FcStrListNext (FcStrList *list)
+{
+ if (list->n >= list->set->num)
+ return 0;
+ return list->set->strs[list->n++];
+}
+
+void
+FcStrListDone (FcStrList *list)
+{
+ FcStrSetDestroy (list->set);
+ free (list);
+}
+
+#define __fcstr__
+#include "fcaliastail.h"
+#undef __fcstr__
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-08 02:46:35 +0000