-static const char bin2hex[] = { '0', '1', '2', '3',
- '4', '5', '6', '7',
- '8', '9', 'a', 'b',
- 'c', 'd', 'e', 'f' };
-
-static char *
-FcDirCacheHashName (const FcChar8 * dir, int collisions)
-{
- unsigned char hash[16], hex_hash[33];
- char *cache_hashed;
- unsigned char uscore = '_';
- int cnt, i;
- FcChar8 *tmp;
- struct MD5Context ctx;
-
- MD5Init (&ctx);
- MD5Update (&ctx, (unsigned char *)dir, strlen ((char *) dir));
-
- for (i = 0; i < collisions; i++)
- MD5Update (&ctx, &uscore, 1);
-
- MD5Final (hash, &ctx);
-
- for (cnt = 0; cnt < 16; ++cnt)
- {
- hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4];
- hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
- }
- hex_hash[32] = 0;
-
- tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX);
- if (!tmp)
- return 0;
-
- cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR"/", tmp);
- free (tmp);
-
- return cache_hashed;
-}
-
-/* Opens the hashed name for cache_file.
- * This would fail in the unlikely event of a collision and subsequent
- * removal of the file which originally caused the collision. */
+/* Opens the cache file for 'dir' for reading.
+ * This searches the list of cache dirs for the relevant cache file,
+ * returning the first one found.
+ */