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-rw-r--r--nx-X11/extras/fontconfig/src/fccache.c1168
1 files changed, 1168 insertions, 0 deletions
diff --git a/nx-X11/extras/fontconfig/src/fccache.c b/nx-X11/extras/fontconfig/src/fccache.c
new file mode 100644
index 000000000..28455430a
--- /dev/null
+++ b/nx-X11/extras/fontconfig/src/fccache.c
@@ -0,0 +1,1168 @@
+/*
+ * $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $
+ *
+ * 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 Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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"
+
+/*
+ * POSIX has broken stdio so that getc must do thread-safe locking,
+ * this is a serious performance problem for applications doing large
+ * amounts of IO with getc (as is done here). If available, use
+ * the getc_unlocked varient instead.
+ */
+
+#if defined(getc_unlocked) || defined(_IO_getc_unlocked)
+#define GETC(f) getc_unlocked(f)
+#define PUTC(c,f) putc_unlocked(c,f)
+#else
+#define GETC(f) getc(f)
+#define PUTC(c,f) putc(c,f)
+#endif
+
+#define FC_DBG_CACHE_REF 1024
+
+static FcChar8 *
+FcCacheReadString (FILE *f, FcChar8 *dest, int len)
+{
+ int c;
+ FcBool escape;
+ FcChar8 *d;
+ int size;
+ int i;
+
+ while ((c = GETC (f)) != EOF)
+ if (c == '"')
+ break;
+ if (c == EOF)
+ return FcFalse;
+ if (len == 0)
+ return FcFalse;
+
+ size = len;
+ i = 0;
+ d = dest;
+ escape = FcFalse;
+ while ((c = GETC (f)) != EOF)
+ {
+ if (!escape)
+ {
+ switch (c) {
+ case '"':
+ c = '\0';
+ break;
+ case '\\':
+ escape = FcTrue;
+ continue;
+ }
+ }
+ if (i == size)
+ {
+ FcChar8 *new = malloc (size * 2); /* freed in caller */
+ if (!new)
+ break;
+ memcpy (new, d, size);
+ size *= 2;
+ if (d != dest)
+ free (d);
+ d = new;
+ }
+ d[i++] = c;
+ if (c == '\0')
+ return d;
+ escape = FcFalse;
+ }
+ if (d != dest)
+ free (d);
+ return 0;
+}
+
+static FcBool
+FcCacheReadUlong (FILE *f, unsigned long *dest)
+{
+ unsigned long t;
+ int c;
+
+ while ((c = GETC (f)) != EOF)
+ {
+ if (!isspace (c))
+ break;
+ }
+ if (c == EOF)
+ return FcFalse;
+ t = 0;
+ for (;;)
+ {
+ if (c == EOF || isspace (c))
+ break;
+ if (!isdigit (c))
+ return FcFalse;
+ t = t * 10 + (c - '0');
+ c = GETC (f);
+ }
+ *dest = t;
+ return FcTrue;
+}
+
+static FcBool
+FcCacheReadInt (FILE *f, int *dest)
+{
+ unsigned long t;
+ FcBool ret;
+
+ ret = FcCacheReadUlong (f, &t);
+ if (ret)
+ *dest = (int) t;
+ return ret;
+}
+
+static FcBool
+FcCacheReadTime (FILE *f, time_t *dest)
+{
+ unsigned long t;
+ FcBool ret;
+
+ ret = FcCacheReadUlong (f, &t);
+ if (ret)
+ *dest = (time_t) t;
+ return ret;
+}
+
+static FcBool
+FcCacheWriteChars (FILE *f, const FcChar8 *chars)
+{
+ FcChar8 c;
+ while ((c = *chars++))
+ {
+ switch (c) {
+ case '"':
+ case '\\':
+ if (PUTC ('\\', f) == EOF)
+ return FcFalse;
+ /* fall through */
+ default:
+ if (PUTC (c, f) == EOF)
+ return FcFalse;
+ }
+ }
+ return FcTrue;
+}
+
+static FcBool
+FcCacheWriteString (FILE *f, const FcChar8 *string)
+{
+
+ if (PUTC ('"', f) == EOF)
+ return FcFalse;
+ if (!FcCacheWriteChars (f, string))
+ return FcFalse;
+ if (PUTC ('"', f) == EOF)
+ return FcFalse;
+ return FcTrue;
+}
+
+static FcBool
+FcCacheWritePath (FILE *f, const FcChar8 *dir, const FcChar8 *file)
+{
+ if (PUTC ('"', f) == EOF)
+ return FcFalse;
+ if (dir)
+ if (!FcCacheWriteChars (f, dir))
+ return FcFalse;
+#ifdef _WIN32
+ if (dir &&
+ dir[strlen((const char *) dir) - 1] != '/' &&
+ dir[strlen((const char *) dir) - 1] != '\\')
+ {
+ if (!FcCacheWriteChars (f, "\\"))
+ return FcFalse;
+ }
+#else
+ if (dir && dir[strlen((const char *) dir) - 1] != '/')
+ if (PUTC ('/', f) == EOF)
+ return FcFalse;
+#endif
+ if (!FcCacheWriteChars (f, file))
+ return FcFalse;
+ if (PUTC ('"', f) == EOF)
+ return FcFalse;
+ return FcTrue;
+}
+
+static FcBool
+FcCacheWriteUlong (FILE *f, unsigned long t)
+{
+ int pow;
+ unsigned long temp, digit;
+
+ temp = t;
+ pow = 1;
+ while (temp >= 10)
+ {
+ temp /= 10;
+ pow *= 10;
+ }
+ temp = t;
+ while (pow)
+ {
+ digit = temp / pow;
+ if (PUTC ((char) digit + '0', f) == EOF)
+ return FcFalse;
+ temp = temp - pow * digit;
+ pow = pow / 10;
+ }
+ return FcTrue;
+}
+
+static FcBool
+FcCacheWriteInt (FILE *f, int i)
+{
+ return FcCacheWriteUlong (f, (unsigned long) i);
+}
+
+static FcBool
+FcCacheWriteTime (FILE *f, time_t t)
+{
+ return FcCacheWriteUlong (f, (unsigned long) t);
+}
+
+static FcBool
+FcCacheFontSetAdd (FcFontSet *set,
+ FcStrSet *dirs,
+ const FcChar8 *dir,
+ int dir_len,
+ const FcChar8 *file,
+ const FcChar8 *name,
+ FcConfig *config)
+{
+ FcChar8 path_buf[8192], *path;
+ int len;
+ FcBool ret = FcFalse;
+ FcPattern *font;
+ FcPattern *frozen;
+
+ path = path_buf;
+ len = (dir_len + 1 + strlen ((const char *) file) + 1);
+ if (len > sizeof (path_buf))
+ {
+ path = malloc (len); /* freed down below */
+ if (!path)
+ return FcFalse;
+ }
+ strncpy ((char *) path, (const char *) dir, dir_len);
+#ifdef _WIN32
+ if (dir[dir_len - 1] != '/' && dir[dir_len - 1] != '\\' )
+ path[dir_len++] = '\\';
+#else
+ if (dir[dir_len - 1] != '/')
+ path[dir_len++] = '/';
+#endif
+ strcpy ((char *) path + dir_len, (const char *) file);
+ if (config && !FcConfigAcceptFilename (config, path))
+ ret = FcTrue;
+ else if (!FcStrCmp (name, FC_FONT_FILE_DIR))
+ {
+ if (FcDebug () & FC_DBG_CACHEV)
+ printf (" dir cache dir \"%s\"\n", path);
+ ret = FcStrSetAdd (dirs, path);
+ }
+ else if (!FcStrCmp (name, FC_FONT_FILE_INVALID))
+ {
+ ret = FcTrue;
+ }
+ else
+ {
+ font = FcNameParse (name);
+ if (font)
+ {
+ FcChar8 *family;
+
+ if (FcDebug () & FC_DBG_CACHEV)
+ printf (" dir cache file \"%s\"\n", file);
+ ret = FcPatternAddString (font, FC_FILE, path);
+ /*
+ * Make sure the pattern has the file name as well as
+ * already containing at least one family name.
+ */
+ if (ret &&
+ FcPatternGetString (font, FC_FAMILY, 0, &family) == FcResultMatch &&
+ (!config || FcConfigAcceptFont (config, font)))
+ {
+ frozen = FcPatternFreeze (font);
+ ret = (frozen != 0);
+ if (ret)
+ ret = FcFontSetAdd (set, frozen);
+ }
+ FcPatternDestroy (font);
+ }
+ }
+ if (path != path_buf) free (path);
+ return ret;
+
+}
+
+static unsigned int
+FcCacheHash (const FcChar8 *string, int len)
+{
+ unsigned int h = 0;
+ FcChar8 c;
+
+ while (len-- && (c = *string++))
+ h = (h << 1) ^ c;
+ return h;
+}
+
+/*
+ * Verify the saved timestamp for a file
+ */
+FcBool
+FcGlobalCacheCheckTime (const FcChar8 *file, FcGlobalCacheInfo *info)
+{
+ struct stat statb;
+
+ if (stat ((char *) file, &statb) < 0)
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" file %s missing\n", file);
+ return FcFalse;
+ }
+ if (statb.st_mtime != info->time)
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" timestamp mismatch (was %d is %d)\n",
+ (int) info->time, (int) statb.st_mtime);
+ return FcFalse;
+ }
+ return FcTrue;
+}
+
+void
+FcGlobalCacheReferenced (FcGlobalCache *cache,
+ FcGlobalCacheInfo *info)
+{
+ if (!info->referenced)
+ {
+ info->referenced = FcTrue;
+ cache->referenced++;
+ if (FcDebug () & FC_DBG_CACHE_REF)
+ printf ("Reference %d %s\n", cache->referenced, info->file);
+ }
+}
+
+/*
+ * Break a path into dir/base elements and compute the base hash
+ * and the dir length. This is shared between the functions
+ * which walk the file caches
+ */
+
+typedef struct _FcFilePathInfo {
+ const FcChar8 *dir;
+ int dir_len;
+ const FcChar8 *base;
+ unsigned int base_hash;
+} FcFilePathInfo;
+
+static FcFilePathInfo
+FcFilePathInfoGet (const FcChar8 *path)
+{
+ FcFilePathInfo i;
+ FcChar8 *slash;
+
+ slash = FcStrLastSlash (path);
+ if (slash)
+ {
+ i.dir = path;
+ i.dir_len = slash - path;
+ if (!i.dir_len)
+ i.dir_len = 1;
+ i.base = slash + 1;
+ }
+ else
+ {
+ i.dir = (const FcChar8 *) ".";
+ i.dir_len = 1;
+ i.base = path;
+ }
+ i.base_hash = FcCacheHash (i.base, -1);
+ return i;
+}
+
+FcGlobalCacheDir *
+FcGlobalCacheDirGet (FcGlobalCache *cache,
+ const FcChar8 *dir,
+ int len,
+ FcBool create_missing)
+{
+ unsigned int hash = FcCacheHash (dir, len);
+ FcGlobalCacheDir *d, **prev;
+
+ for (prev = &cache->ents[hash % FC_GLOBAL_CACHE_DIR_HASH_SIZE];
+ (d = *prev);
+ prev = &(*prev)->next)
+ {
+ if (d->info.hash == hash && d->len == len &&
+ !strncmp ((const char *) d->info.file,
+ (const char *) dir, len))
+ break;
+ }
+ if (!(d = *prev))
+ {
+ int i;
+ if (!create_missing)
+ return 0;
+ d = malloc (sizeof (FcGlobalCacheDir) + len + 1);
+ if (!d)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCacheDir) + len + 1);
+ d->next = *prev;
+ *prev = d;
+ d->info.hash = hash;
+ d->info.file = (FcChar8 *) (d + 1);
+ strncpy ((char *) d->info.file, (const char *) dir, len);
+ d->info.file[len] = '\0';
+ d->info.time = 0;
+ d->info.referenced = FcFalse;
+ d->len = len;
+ for (i = 0; i < FC_GLOBAL_CACHE_FILE_HASH_SIZE; i++)
+ d->ents[i] = 0;
+ d->subdirs = 0;
+ }
+ return d;
+}
+
+static FcGlobalCacheInfo *
+FcGlobalCacheDirAdd (FcGlobalCache *cache,
+ const FcChar8 *dir,
+ time_t time,
+ FcBool replace,
+ FcBool create_missing)
+{
+ FcGlobalCacheDir *d;
+ FcFilePathInfo i;
+ FcGlobalCacheSubdir *subdir;
+ FcGlobalCacheDir *parent;
+
+ i = FcFilePathInfoGet (dir);
+ parent = FcGlobalCacheDirGet (cache, i.dir, i.dir_len, create_missing);
+ /*
+ * Tricky here -- directories containing fonts.cache-1 files
+ * need entries only when the parent doesn't have a cache file.
+ * That is, when the parent already exists in the cache, is
+ * referenced and has a "real" timestamp. The time of 0 is
+ * special and marks directories which got stuck in the
+ * global cache for this very reason. Yes, it could
+ * use a separate boolean field, and probably should.
+ */
+ if (!parent || (!create_missing &&
+ (!parent->info.referenced ||
+ (parent->info.time == 0))))
+ return 0;
+ /*
+ * Add this directory to the cache
+ */
+ d = FcGlobalCacheDirGet (cache, dir, strlen ((const char *) dir), FcTrue);
+ if (!d)
+ return 0;
+ d->info.time = time;
+ /*
+ * Add this directory to the subdirectory list of the parent
+ */
+ subdir = malloc (sizeof (FcGlobalCacheSubdir));
+ if (!subdir)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCacheSubdir));
+ subdir->ent = d;
+ subdir->next = parent->subdirs;
+ parent->subdirs = subdir;
+ return &d->info;
+}
+
+static void
+FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
+{
+ FcGlobalCacheFile *f, *next;
+ int h;
+ FcGlobalCacheSubdir *s, *nexts;
+
+ for (h = 0; h < FC_GLOBAL_CACHE_FILE_HASH_SIZE; h++)
+ for (f = d->ents[h]; f; f = next)
+ {
+ next = f->next;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheFile) +
+ strlen ((char *) f->info.file) + 1 +
+ strlen ((char *) f->name) + 1);
+ free (f);
+ }
+ for (s = d->subdirs; s; s = nexts)
+ {
+ nexts = s->next;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheSubdir));
+ free (s);
+ }
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir) + d->len + 1);
+ free (d);
+}
+
+/*
+ * If the parent is in the global cache and referenced, add
+ * an entry for 'dir' to the global cache. This is used
+ * for directories with fonts.cache files
+ */
+
+void
+FcGlobalCacheReferenceSubdir (FcGlobalCache *cache,
+ const FcChar8 *dir)
+{
+ FcGlobalCacheInfo *info;
+ info = FcGlobalCacheDirAdd (cache, dir, 0, FcFalse, FcFalse);
+ if (info && !info->referenced)
+ {
+ info->referenced = FcTrue;
+ cache->referenced++;
+ }
+}
+
+/*
+ * Check to see if the global cache contains valid data for 'dir'.
+ * If so, scan the global cache for files and directories in 'dir'.
+ * else, return False.
+ */
+FcBool
+FcGlobalCacheScanDir (FcFontSet *set,
+ FcStrSet *dirs,
+ FcGlobalCache *cache,
+ const FcChar8 *dir,
+ FcConfig *config)
+{
+ FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, dir,
+ strlen ((const char *) dir),
+ FcFalse);
+ FcGlobalCacheFile *f;
+ int h;
+ int dir_len;
+ FcGlobalCacheSubdir *subdir;
+ FcBool any_in_cache = FcFalse;
+
+ if (FcDebug() & FC_DBG_CACHE)
+ printf ("FcGlobalCacheScanDir %s\n", dir);
+
+ if (!d)
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("\tNo dir cache entry\n");
+ return FcFalse;
+ }
+
+ /*
+ * See if the timestamp recorded in the global cache
+ * matches the directory time, if not, return False
+ */
+ if (!FcGlobalCacheCheckTime (d->info.file, &d->info))
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("\tdir cache entry time mismatch\n");
+ return FcFalse;
+ }
+
+ /*
+ * Add files from 'dir' to the fontset
+ */
+ dir_len = strlen ((const char *) dir);
+ for (h = 0; h < FC_GLOBAL_CACHE_FILE_HASH_SIZE; h++)
+ for (f = d->ents[h]; f; f = f->next)
+ {
+ if (FcDebug() & FC_DBG_CACHEV)
+ printf ("FcGlobalCacheScanDir add file %s\n", f->info.file);
+ any_in_cache = FcTrue;
+ if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
+ f->info.file, f->name, config))
+ {
+ cache->broken = FcTrue;
+ return FcFalse;
+ }
+ FcGlobalCacheReferenced (cache, &f->info);
+ }
+ /*
+ * Add directories in 'dir' to 'dirs'
+ */
+ for (subdir = d->subdirs; subdir; subdir = subdir->next)
+ {
+ FcFilePathInfo info = FcFilePathInfoGet (subdir->ent->info.file);
+
+ any_in_cache = FcTrue;
+ if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
+ info.base, FC_FONT_FILE_DIR, config))
+ {
+ cache->broken = FcTrue;
+ return FcFalse;
+ }
+ FcGlobalCacheReferenced (cache, &subdir->ent->info);
+ }
+
+ FcGlobalCacheReferenced (cache, &d->info);
+
+ /*
+ * To recover from a bug in previous versions of fontconfig,
+ * return FcFalse if no entries in the cache were found
+ * for this directory. This will cause any empty directories
+ * to get rescanned every time fontconfig is initialized. This
+ * might get removed at some point when the older cache files are
+ * presumably fixed.
+ */
+ return any_in_cache;
+}
+
+/*
+ * Locate the cache entry for a particular file
+ */
+FcGlobalCacheFile *
+FcGlobalCacheFileGet (FcGlobalCache *cache,
+ const FcChar8 *file,
+ int id,
+ int *count)
+{
+ FcFilePathInfo i = FcFilePathInfoGet (file);
+ FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
+ i.dir_len, FcFalse);
+ FcGlobalCacheFile *f, *match = 0;
+ int max = -1;
+
+ if (!d)
+ return 0;
+ for (f = d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE]; f; f = f->next)
+ {
+ if (f->info.hash == i.base_hash &&
+ !strcmp ((const char *) f->info.file, (const char *) i.base))
+ {
+ if (f->id == id)
+ match = f;
+ if (f->id > max)
+ max = f->id;
+ }
+ }
+ if (count)
+ *count = max + 1;
+ return match;
+}
+
+/*
+ * Add a file entry to the cache
+ */
+static FcGlobalCacheInfo *
+FcGlobalCacheFileAdd (FcGlobalCache *cache,
+ const FcChar8 *path,
+ int id,
+ time_t time,
+ const FcChar8 *name,
+ FcBool replace)
+{
+ FcFilePathInfo i = FcFilePathInfoGet (path);
+ FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
+ i.dir_len, FcTrue);
+ FcGlobalCacheFile *f, **prev;
+ int size;
+
+ if (!d)
+ return 0;
+ for (prev = &d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE];
+ (f = *prev);
+ prev = &(*prev)->next)
+ {
+ if (f->info.hash == i.base_hash &&
+ f->id == id &&
+ !strcmp ((const char *) f->info.file, (const char *) i.base))
+ {
+ break;
+ }
+ }
+ if (*prev)
+ {
+ if (!replace)
+ return 0;
+
+ f = *prev;
+ if (f->info.referenced)
+ cache->referenced--;
+ *prev = f->next;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheFile) +
+ strlen ((char *) f->info.file) + 1 +
+ strlen ((char *) f->name) + 1);
+ free (f);
+ }
+ size = (sizeof (FcGlobalCacheFile) +
+ strlen ((char *) i.base) + 1 +
+ strlen ((char *) name) + 1);
+ f = malloc (size);
+ if (!f)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, size);
+ f->next = *prev;
+ *prev = f;
+ f->info.hash = i.base_hash;
+ f->info.file = (FcChar8 *) (f + 1);
+ f->info.time = time;
+ f->info.referenced = FcFalse;
+ f->id = id;
+ f->name = f->info.file + strlen ((char *) i.base) + 1;
+ strcpy ((char *) f->info.file, (const char *) i.base);
+ strcpy ((char *) f->name, (const char *) name);
+ return &f->info;
+}
+
+FcGlobalCache *
+FcGlobalCacheCreate (void)
+{
+ FcGlobalCache *cache;
+ int h;
+
+ cache = malloc (sizeof (FcGlobalCache));
+ if (!cache)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
+ cache->ents[h] = 0;
+ cache->entries = 0;
+ cache->referenced = 0;
+ cache->updated = FcFalse;
+ cache->broken = FcFalse;
+ return cache;
+}
+
+void
+FcGlobalCacheDestroy (FcGlobalCache *cache)
+{
+ FcGlobalCacheDir *d, *next;
+ int h;
+
+ for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
+ {
+ for (d = cache->ents[h]; d; d = next)
+ {
+ next = d->next;
+ FcGlobalCacheDirDestroy (d);
+ }
+ }
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ free (cache);
+}
+
+/*
+ * Cache file syntax is quite simple:
+ *
+ * "file_name" id time "font_name" \n
+ */
+
+void
+FcGlobalCacheLoad (FcGlobalCache *cache,
+ const FcChar8 *cache_file)
+{
+ FILE *f;
+ FcChar8 file_buf[8192], *file;
+ int id;
+ time_t time;
+ FcChar8 name_buf[8192], *name;
+ FcGlobalCacheInfo *info;
+
+ f = fopen ((char *) cache_file, "r");
+ if (!f)
+ return;
+
+ cache->updated = FcFalse;
+ file = 0;
+ name = 0;
+ while ((file = FcCacheReadString (f, file_buf, sizeof (file_buf))) &&
+ FcCacheReadInt (f, &id) &&
+ FcCacheReadTime (f, &time) &&
+ (name = FcCacheReadString (f, name_buf, sizeof (name_buf))))
+ {
+ if (FcDebug () & FC_DBG_CACHEV)
+ printf ("FcGlobalCacheLoad \"%s\" \"%20.20s\"\n", file, name);
+ if (!FcStrCmp (name, FC_FONT_FILE_DIR))
+ info = FcGlobalCacheDirAdd (cache, file, time, FcFalse, FcTrue);
+ else
+ info = FcGlobalCacheFileAdd (cache, file, id, time, name, FcFalse);
+ if (!info)
+ cache->broken = FcTrue;
+ else
+ cache->entries++;
+ if (FcDebug () & FC_DBG_CACHE_REF)
+ printf ("FcGlobalCacheLoad entry %d %s\n",
+ cache->entries, file);
+ if (file != file_buf)
+ free (file);
+ if (name != name_buf)
+ free (name);
+ file = 0;
+ name = 0;
+ }
+ if (file && file != file_buf)
+ free (file);
+ if (name && name != name_buf)
+ free (name);
+ fclose (f);
+}
+
+FcBool
+FcGlobalCacheUpdate (FcGlobalCache *cache,
+ const FcChar8 *file,
+ int id,
+ const FcChar8 *name)
+{
+ const FcChar8 *match;
+ struct stat statb;
+ FcGlobalCacheInfo *info;
+
+ match = file;
+
+ if (stat ((char *) file, &statb) < 0)
+ return FcFalse;
+ if (S_ISDIR (statb.st_mode))
+ info = FcGlobalCacheDirAdd (cache, file, statb.st_mtime,
+ FcTrue, FcTrue);
+ else
+ info = FcGlobalCacheFileAdd (cache, file, id, statb.st_mtime,
+ name, FcTrue);
+ if (info)
+ {
+ FcGlobalCacheReferenced (cache, info);
+ cache->updated = FcTrue;
+ }
+ else
+ cache->broken = FcTrue;
+ return info != 0;
+}
+
+FcBool
+FcGlobalCacheSave (FcGlobalCache *cache,
+ const FcChar8 *cache_file)
+{
+ FILE *f;
+ int dir_hash, file_hash;
+ FcGlobalCacheDir *dir;
+ FcGlobalCacheFile *file;
+ FcAtomic *atomic;
+
+ if (!cache->updated && cache->referenced == cache->entries)
+ return FcTrue;
+
+ if (cache->broken)
+ return FcFalse;
+
+#if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
+ /* Set-UID programs can't safely update the cache */
+ if (getuid () != geteuid ())
+ return FcFalse;
+#endif
+
+ atomic = FcAtomicCreate (cache_file);
+ if (!atomic)
+ goto bail0;
+ if (!FcAtomicLock (atomic))
+ goto bail1;
+ f = fopen ((char *) FcAtomicNewFile(atomic), "w");
+ if (!f)
+ goto bail2;
+
+ for (dir_hash = 0; dir_hash < FC_GLOBAL_CACHE_DIR_HASH_SIZE; dir_hash++)
+ {
+ for (dir = cache->ents[dir_hash]; dir; dir = dir->next)
+ {
+ if (!dir->info.referenced)
+ continue;
+ if (!FcCacheWriteString (f, dir->info.file))
+ goto bail4;
+ if (PUTC (' ', f) == EOF)
+ goto bail4;
+ if (!FcCacheWriteInt (f, 0))
+ goto bail4;
+ if (PUTC (' ', f) == EOF)
+ goto bail4;
+ if (!FcCacheWriteTime (f, dir->info.time))
+ goto bail4;
+ if (PUTC (' ', f) == EOF)
+ goto bail4;
+ if (!FcCacheWriteString (f, (FcChar8 *) FC_FONT_FILE_DIR))
+ goto bail4;
+ if (PUTC ('\n', f) == EOF)
+ goto bail4;
+
+ for (file_hash = 0; file_hash < FC_GLOBAL_CACHE_FILE_HASH_SIZE; file_hash++)
+ {
+ for (file = dir->ents[file_hash]; file; file = file->next)
+ {
+ if (!file->info.referenced)
+ continue;
+ if (!FcCacheWritePath (f, dir->info.file, file->info.file))
+ goto bail4;
+ if (PUTC (' ', f) == EOF)
+ goto bail4;
+ if (!FcCacheWriteInt (f, file->id < 0 ? 0 : file->id))
+ goto bail4;
+ if (PUTC (' ', f) == EOF)
+ goto bail4;
+ if (!FcCacheWriteTime (f, file->info.time))
+ goto bail4;
+ if (PUTC (' ', f) == EOF)
+ goto bail4;
+ if (!FcCacheWriteString (f, file->name))
+ goto bail4;
+ if (PUTC ('\n', f) == EOF)
+ goto bail4;
+ }
+ }
+ }
+ }
+
+ if (fclose (f) == EOF)
+ goto bail3;
+
+ if (!FcAtomicReplaceOrig (atomic))
+ goto bail3;
+
+ FcAtomicUnlock (atomic);
+ FcAtomicDestroy (atomic);
+
+ cache->updated = FcFalse;
+ return FcTrue;
+
+bail4:
+ fclose (f);
+bail3:
+ FcAtomicDeleteNew (atomic);
+bail2:
+ FcAtomicUnlock (atomic);
+bail1:
+ FcAtomicDestroy (atomic);
+bail0:
+ return FcFalse;
+}
+
+FcBool
+FcDirCacheValid (const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ struct stat file_stat, dir_stat;
+
+ if (stat ((char *) dir, &dir_stat) < 0)
+ {
+ FcStrFree (cache_file);
+ return FcFalse;
+ }
+ if (stat ((char *) cache_file, &file_stat) < 0)
+ {
+ FcStrFree (cache_file);
+ return FcFalse;
+ }
+ FcStrFree (cache_file);
+ /*
+ * If the directory has been modified more recently than
+ * the cache file, the cache is not valid
+ */
+ if (dir_stat.st_mtime - file_stat.st_mtime > 0)
+ return FcFalse;
+ return FcTrue;
+}
+
+FcBool
+FcDirCacheReadDir (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir, FcConfig *config)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ FILE *f;
+ FcChar8 *base;
+ int id;
+ int dir_len;
+ FcChar8 file_buf[8192], *file;
+ FcChar8 name_buf[8192], *name;
+ FcBool ret = FcFalse;
+
+ if (!cache_file)
+ goto bail0;
+
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcDirCacheReadDir cache_file \"%s\"\n", cache_file);
+
+ f = fopen ((char *) cache_file, "r");
+ if (!f)
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" no cache file\n");
+ goto bail1;
+ }
+
+ if (!FcDirCacheValid (dir))
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" cache file older than directory\n");
+ goto bail2;
+ }
+
+ base = (FcChar8 *) strrchr ((char *) cache_file, '/');
+ if (!base)
+ goto bail2;
+ base++;
+ dir_len = base - cache_file;
+
+ file = 0;
+ name = 0;
+ while ((file = FcCacheReadString (f, file_buf, sizeof (file_buf))) &&
+ FcCacheReadInt (f, &id) &&
+ (name = FcCacheReadString (f, name_buf, sizeof (name_buf))))
+ {
+ if (!FcCacheFontSetAdd (set, dirs, cache_file, dir_len,
+ file, name, config))
+ goto bail3;
+ if (file != file_buf)
+ free (file);
+ if (name != name_buf)
+ free (name);
+ file = name = 0;
+ }
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" cache loaded\n");
+
+ ret = FcTrue;
+bail3:
+ if (file && file != file_buf)
+ free (file);
+ if (name && name != name_buf)
+ free (name);
+bail2:
+ fclose (f);
+bail1:
+ FcStrFree (cache_file);
+bail0:
+ return ret;
+}
+
+/*
+ * return the path from the directory containing 'cache' to 'file'
+ */
+
+static const FcChar8 *
+FcFileBaseName (const FcChar8 *cache, const FcChar8 *file)
+{
+ const FcChar8 *cache_slash;
+
+ cache_slash = FcStrLastSlash (cache);
+ if (cache_slash && !strncmp ((const char *) cache, (const char *) file,
+ (cache_slash + 1) - cache))
+ return file + ((cache_slash + 1) - cache);
+ return file;
+}
+
+FcBool
+FcDirCacheWriteDir (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ FcPattern *font;
+ FILE *f;
+ FcChar8 *name;
+ const FcChar8 *file, *base;
+ int n;
+ int id;
+ FcBool ret;
+ FcStrList *list;
+
+ if (!cache_file)
+ goto bail0;
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
+
+ f = fopen ((char *) cache_file, "w");
+ if (!f)
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" can't create \"%s\"\n", cache_file);
+ goto bail1;
+ }
+
+ list = FcStrListCreate (dirs);
+ if (!list)
+ goto bail2;
+
+ while ((dir = FcStrListNext (list)))
+ {
+ base = FcFileBaseName (cache_file, dir);
+ if (!FcCacheWriteString (f, base))
+ goto bail3;
+ if (PUTC (' ', f) == EOF)
+ goto bail3;
+ if (!FcCacheWriteInt (f, 0))
+ goto bail3;
+ if (PUTC (' ', f) == EOF)
+ goto bail3;
+ if (!FcCacheWriteString (f, FC_FONT_FILE_DIR))
+ goto bail3;
+ if (PUTC ('\n', f) == EOF)
+ goto bail3;
+ }
+
+ for (n = 0; n < set->nfont; n++)
+ {
+ font = set->fonts[n];
+ if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
+ goto bail3;
+ base = FcFileBaseName (cache_file, file);
+ if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
+ goto bail3;
+ if (FcDebug () & FC_DBG_CACHEV)
+ printf (" write file \"%s\"\n", base);
+ if (!FcCacheWriteString (f, base))
+ goto bail3;
+ if (PUTC (' ', f) == EOF)
+ goto bail3;
+ if (!FcCacheWriteInt (f, id))
+ goto bail3;
+ if (PUTC (' ', f) == EOF)
+ goto bail3;
+ name = FcNameUnparse (font);
+ if (!name)
+ goto bail3;
+ ret = FcCacheWriteString (f, name);
+ FcStrFree (name);
+ if (!ret)
+ goto bail3;
+ if (PUTC ('\n', f) == EOF)
+ goto bail3;
+ }
+
+ FcStrListDone (list);
+
+ if (fclose (f) == EOF)
+ goto bail1;
+
+ FcStrFree (cache_file);
+
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" cache written\n");
+ return FcTrue;
+
+bail3:
+ FcStrListDone (list);
+bail2:
+ fclose (f);
+bail1:
+ unlink ((char *) cache_file);
+ FcStrFree (cache_file);
+bail0:
+ return FcFalse;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 21:10:44 +0000