#define ENDIAN_TEST 0x12345678
#define MACHINE_SIGNATURE_SIZE 9 + 5*19 + 1
-static char *
-FcCacheProduceMachineSignature (void);
-
-/*
- * 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
-
-#define PAGESIZE 8192
-
-static FcBool force;
-
-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 off_t
+FcCacheSkipToArch (int fd, const char * arch);
-static FcBool
-FcCacheReadTime (FILE *f, time_t *dest)
-{
- unsigned long t;
- FcBool ret;
+static FcBool
+FcCacheMoveDown (int fd, off_t start);
- ret = FcCacheReadUlong (f, &t);
- if (ret)
- *dest = (time_t) t;
- return ret;
-}
+static void *
+FcDirCacheProduce (FcFontSet *set, FcCache * metadata);
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;
-}
+FcDirCacheConsume (int fd, FcFontSet *set);
static FcBool
-FcCacheWriteString (FILE *f, const FcChar8 *string)
-{
+FcDirCacheRead (FcFontSet * set, const FcChar8 *dir);
- 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;
+static int
+FcCacheNextOffset(off_t w);
- 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 char *
+FcCacheMachineSignature (void);
static FcBool
-FcCacheWriteInt (FILE *f, int i)
-{
- return FcCacheWriteUlong (f, (unsigned long) i);
-}
+FcCacheHaveBank (int bank);
-static FcBool
-FcCacheWriteTime (FILE *f, time_t t)
-{
- return FcCacheWriteUlong (f, (unsigned long) t);
-}
+#define FC_DBG_CACHE_REF 1024
static FcChar8 *
-FcCacheReadString2 (int fd, FcChar8 *dest, int len)
+FcCacheReadString (int fd, FcChar8 *dest, int len)
{
FcChar8 c;
FcBool escape;
}
static FcBool
-FcCacheWriteString2 (int fd, const FcChar8 *chars)
+FcCacheWriteString (int fd, const FcChar8 *chars)
{
if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
return FcFalse;
return FcTrue;
}
-static FcBool
-FcCacheFontSetAdd (FcFontSet *set,
- FcStrSet *dirs,
- const FcChar8 *dir,
- int dir_len,
- const FcChar8 *file,
- const FcChar8 *name,
- FcConfig *config)
+static void
+FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
{
- 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
+ FcGlobalCacheDir *dd, *next;
+
+ for (dd = d; dd; dd = next)
{
- 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);
- }
+ next = dd->next;
+ FcMemFree (FC_MEM_STRING, strlen (dd->name)+1);
+ free (dd->name);
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
+ free (dd);
}
- if (path != path_buf) free (path);
- return ret;
-
}
-static unsigned int
-FcCacheHash (const FcChar8 *string, int len)
+FcGlobalCache *
+FcGlobalCacheCreate (void)
{
- unsigned int h = 0;
- FcChar8 c;
+ FcGlobalCache *cache;
- while (len-- && (c = *string++))
- h = (h << 1) ^ c;
- return h;
+ cache = malloc (sizeof (FcGlobalCache));
+ if (!cache)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ cache->dirs = 0;
+ cache->updated = FcFalse;
+ cache->fd = -1;
+ return cache;
}
-/*
- * Verify the saved timestamp for a file
- */
-FcBool
-FcGlobalCacheCheckTime (const FcChar8 *file, FcGlobalCacheInfo *info)
+void
+FcGlobalCacheDestroy (FcGlobalCache *cache)
{
- struct stat statb;
+ FcGlobalCacheDir *d, *next;
- if (stat ((char *) file, &statb) < 0)
+ for (d = cache->dirs; d; d = next)
{
- if (FcDebug () & FC_DBG_CACHE)
- printf (" file %s missing\n", file);
- return FcFalse;
+ next = d->next;
+ FcGlobalCacheDirDestroy (d);
}
- 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;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ free (cache);
}
void
-FcGlobalCacheReferenced (FcGlobalCache *cache,
- FcGlobalCacheInfo *info)
+FcGlobalCacheLoad (FcGlobalCache *cache,
+ const FcChar8 *cache_file)
{
- 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
- */
+ FcChar8 name_buf[8192];
+ FcGlobalCacheDir *d, *next;
+ char * current_arch_machine_name;
+ char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
+ off_t current_arch_start;
-typedef struct _FcFilePathInfo {
- const FcChar8 *dir;
- int dir_len;
- const FcChar8 *base;
- unsigned int base_hash;
-} FcFilePathInfo;
+ cache->fd = open ((char *) cache_file, O_RDONLY);
+ if (cache->fd == -1)
+ return;
-static FcFilePathInfo
-FcFilePathInfoGet (const FcChar8 *path)
-{
- FcFilePathInfo i;
- FcChar8 *slash;
+ cache->updated = FcFalse;
- 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;
-}
+ current_arch_machine_name = FcCacheMachineSignature ();
+ current_arch_start = FcCacheSkipToArch(cache->fd,
+ current_arch_machine_name);
+ if (current_arch_start < 0)
+ goto bail0;
-FcGlobalCacheDir *
-FcGlobalCacheDirGet (FcGlobalCache *cache,
- const FcChar8 *dir,
- int len,
- FcBool create_missing)
-{
- unsigned int hash = FcCacheHash (dir, len);
- FcGlobalCacheDir *d, **prev;
+ lseek (cache->fd, current_arch_start, SEEK_SET);
+ if (FcCacheReadString (cache->fd, candidate_arch_machine_name,
+ sizeof (candidate_arch_machine_name)) == 0)
+ goto bail0;
- for (prev = &cache->ents[hash % FC_GLOBAL_CACHE_DIR_HASH_SIZE];
- (d = *prev);
- prev = &(*prev)->next)
+ while (1)
{
- if (d->info.hash == hash && d->len == len &&
- !strncmp ((const char *) d->info.file,
- (const char *) dir, len))
+ FcCacheReadString (cache->fd, name_buf, sizeof (name_buf));
+ if (!strlen(name_buf))
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;
-}
+ d = malloc (sizeof (FcGlobalCacheDir));
+ if (!d)
+ goto bail1;
-static void
-FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
-{
- FcGlobalCacheFile *f, *next;
- int h;
- FcGlobalCacheSubdir *s, *nexts;
+ d->next = cache->dirs;
+ cache->dirs = d;
- 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);
+ d->name = FcStrCopy (name_buf);
+ d->ent = 0;
+ d->offset = lseek (cache->fd, 0, SEEK_CUR);
+ read (cache->fd, &d->metadata, sizeof (FcCache));
+ lseek (cache->fd, d->metadata.count, SEEK_CUR);
}
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir) + d->len + 1);
- free (d);
-}
+ return;
-/*
- * 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)
+ bail1:
+ for (d = cache->dirs; d; d = next)
{
- info->referenced = FcTrue;
- cache->referenced++;
+ next = d->next;
+ free (d);
}
+ cache->dirs = 0;
+ bail0:
+ free (current_arch_machine_name);
+ close (cache->fd);
+ cache->fd = -1;
+ return;
}
-/*
- * 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)
+FcGlobalCacheReadDir (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;
- }
+ FcGlobalCacheDir *d;
- /*
- * 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");
+ if (cache->fd == -1)
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)
+ for (d = cache->dirs; d; d = d->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))
+ if (strcmp (d->name, dir) == 0)
{
- cache->broken = FcTrue;
- return FcFalse;
+ lseek (cache->fd, d->offset, SEEK_SET);
+ if (!FcDirCacheConsume (cache->fd, set))
+ return FcFalse;
+ return FcTrue;
}
- 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;
+ return FcFalse;
}
-/*
- * Locate the cache entry for a particular file
- */
-FcGlobalCacheFile *
-FcGlobalCacheFileGet (FcGlobalCache *cache,
- const FcChar8 *file,
- int id,
- int *count)
+FcBool
+FcGlobalCacheUpdate (FcGlobalCache *cache,
+ const FcChar8 *name,
+ FcFontSet *set)
{
- FcFilePathInfo i = FcFilePathInfoGet (file);
- FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
- i.dir_len, FcFalse);
- FcGlobalCacheFile *f, *match = 0;
- int max = -1;
+ FcGlobalCacheDir * d;
- 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 (!set->nfont)
+ return FcTrue;
- if (!d)
- return 0;
- for (prev = &d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE];
- (f = *prev);
- prev = &(*prev)->next)
+ for (d = cache->dirs; d; d = d->next)
{
- if (f->info.hash == i.base_hash &&
- f->id == id &&
- !strcmp ((const char *) f->info.file, (const char *) i.base))
- {
+ if (strcmp(d->name, name) == 0)
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 (!d)
{
- 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;
+ d = malloc (sizeof (FcGlobalCacheDir));
+ if (!d)
+ return FcFalse;
+ d->next = cache->dirs;
+ cache->dirs = d;
}
- 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;
+ cache->updated = FcTrue;
- 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;
+ d->name = FcStrCopy (name);
+ d->ent = FcDirCacheProduce (set, &d->metadata);
+ d->offset = 0;
+ return FcTrue;
}
FcBool
FcGlobalCacheSave (FcGlobalCache *cache,
const FcChar8 *cache_file)
{
- FILE *f;
- int dir_hash, file_hash;
+ int fd;
FcGlobalCacheDir *dir;
- FcGlobalCacheFile *file;
FcAtomic *atomic;
+ off_t current_arch_start = 0, truncate_to;
+ char * current_arch_machine_name, * header;
- if (!cache->updated && cache->referenced == cache->entries)
+ if (!cache->updated)
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 ())
goto bail0;
if (!FcAtomicLock (atomic))
goto bail1;
- f = fopen ((char *) FcAtomicNewFile(atomic), "w");
- if (!f)
+ fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT,
+ S_IRUSR | S_IWUSR);
+ if (fd == -1)
goto bail2;
- for (dir_hash = 0; dir_hash < FC_GLOBAL_CACHE_DIR_HASH_SIZE; dir_hash++)
+ current_arch_machine_name = FcCacheMachineSignature ();
+ current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
+ if (current_arch_start < 0)
+ current_arch_start = FcCacheNextOffset (lseek(fd, 0, SEEK_END));
+
+ if (!FcCacheMoveDown(fd, current_arch_start))
+ goto bail2;
+
+ current_arch_start = lseek(fd, 0, SEEK_CUR);
+ if (ftruncate (fd, current_arch_start) == -1)
+ goto bail2;
+
+ truncate_to = current_arch_start;
+ for (dir = cache->dirs; dir; dir = dir->next)
{
- 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;
- }
- }
- }
+ truncate_to += strlen(dir->name) + 1;
+ truncate_to += sizeof (FcCache);
+ truncate_to = FcCacheNextOffset (current_arch_start + truncate_to);
+ truncate_to += dir->metadata.count;
+ }
+ truncate_to -= current_arch_start;
+ header = malloc (10 + strlen (current_arch_machine_name));
+ if (!header)
+ goto bail1;
+ sprintf (header, "%8x ", (int)truncate_to);
+ strcat (header, current_arch_machine_name);
+ if (!FcCacheWriteString (fd, header))
+ goto bail1;
+
+ for (dir = cache->dirs; dir; dir = dir->next)
+ {
+ FcCacheWriteString (fd, dir->name);
+ write (fd, &dir->metadata, sizeof(FcCache));
+ lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
+ write (fd, dir->ent, dir->metadata.count);
}
+ FcCacheWriteString (fd, "");
- if (fclose (f) == EOF)
+ if (close (fd) == -1)
goto bail3;
if (!FcAtomicReplaceOrig (atomic))
cache->updated = FcFalse;
return FcTrue;
-bail4:
- fclose (f);
bail3:
FcAtomicDeleteNew (atomic);
bail2:
return FcFalse;
}
+#define PAGESIZE 8192
/*
- * Find the next presumably-mmapable offset after the current file
- * pointer.
+ * Find the next presumably-mmapable offset after the supplied file
+ * position.
*/
static int
FcCacheNextOffset(off_t w)
long bs;
lseek (fd, current_arch_start, SEEK_SET);
- if (FcCacheReadString2 (fd, candidate_arch_machine_name_count,
+ if (FcCacheReadString (fd, candidate_arch_machine_name_count,
sizeof (candidate_arch_machine_name_count)) == 0)
break;
if (!strlen(candidate_arch_machine_name_count))
current_arch_start += bs;
}
- if (strcmp (candidate_arch, arch)!=0)
+ if (candidate_arch && strcmp (candidate_arch, arch)!=0)
return -1;
return current_arch_start;
/* Cuts out the segment at the file pointer (moves everything else
* down to cover it), and leaves the file pointer at the end of the
* file. */
-#define BUF_SIZE 8192
-
static FcBool
FcCacheMoveDown (int fd, off_t start)
{
- char * buf = malloc (BUF_SIZE);
+ char * buf = malloc (8192);
char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
long bs;
int c, bytes_skipped;
return FcFalse;
lseek (fd, start, SEEK_SET);
- if (FcCacheReadString2 (fd, candidate_arch_machine_name,
+ if (FcCacheReadString (fd, candidate_arch_machine_name,
sizeof (candidate_arch_machine_name)) == 0)
goto done;
if (!strlen(candidate_arch_machine_name))
do
{
lseek (fd, start+bs+bytes_skipped, SEEK_SET);
- if ((c = read (fd, buf, BUF_SIZE)) <= 0)
+ if ((c = read (fd, buf, 8192)) <= 0)
break;
lseek (fd, start+bytes_skipped, SEEK_SET);
if (write (fd, buf, c) < 0)
if (!s)
return 0;
- if (force)
- goto bail;
-
if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s))
goto bail;
}
/* read serialized state from the cache file */
-FcBool
+static FcBool
FcDirCacheRead (FcFontSet * set, const FcChar8 *dir)
{
FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
int fd;
- FcCache metadata;
- void * current_dir_block;
char * current_arch_machine_name;
char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
off_t current_arch_start = 0;
- if (force)
- goto bail;
if (!cache_file)
goto bail;
- current_arch_machine_name = FcCacheProduceMachineSignature();
+ current_arch_machine_name = FcCacheMachineSignature();
fd = open(cache_file, O_RDONLY);
if (fd == -1)
goto bail;
goto bail1;
lseek (fd, current_arch_start, SEEK_SET);
- if (FcCacheReadString2 (fd, candidate_arch_machine_name,
+ if (FcCacheReadString (fd, candidate_arch_machine_name,
sizeof (candidate_arch_machine_name)) == 0)
goto bail1;
+
+ if (!FcDirCacheConsume (fd, set))
+ goto bail1;
+
+ close(fd);
+ free (cache_file);
+ return FcTrue;
+
+ bail1:
+ close(fd);
+ bail:
+ free (cache_file);
+ return FcFalse;
+}
+
+static FcBool
+FcDirCacheConsume (int fd, FcFontSet *set)
+{
+ FcCache metadata;
+ void * current_dir_block;
- // sanity check for endianness issues
read(fd, &metadata, sizeof(FcCache));
if (metadata.magic != FC_CACHE_MAGIC)
- goto bail1;
+ return FcFalse;
if (!metadata.count)
- goto bail1;
+ return FcTrue;
off_t pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
current_dir_block = mmap (0, metadata.count,
PROT_READ, MAP_SHARED, fd, pos);
if (current_dir_block == MAP_FAILED)
- perror("");
+ return FcFalse;
if (!FcFontSetUnserialize (metadata, set, current_dir_block))
- goto bail1;
-
- close(fd);
- free (cache_file);
+ return FcFalse;
+
return FcTrue;
+}
+
+static void *
+FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
+{
+ void * current_dir_block, * final_dir_block;
+ static int rand_state = 0;
+ int bank;
+
+ if (!rand_state)
+ rand_state = time(0L);
+ bank = rand_r(&rand_state);
+
+ while (FcCacheHaveBank(bank))
+ bank = rand_r(&rand_state);
+
+ memset (metadata, 0, sizeof(FcCache));
+ FcFontSetNewBank();
+ metadata->count = FcFontSetNeededBytes (set);
+ metadata->magic = FC_CACHE_MAGIC;
+ metadata->bank = bank;
+
+ if (!metadata->count) /* not a failure, no fonts to write */
+ return 0;
+
+ current_dir_block = malloc (metadata->count);
+ if (!current_dir_block)
+ goto bail;
+ final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
+
+ if ((char *)current_dir_block + metadata->count != final_dir_block)
+ goto bail;
+
+ if (!FcFontSetSerialize (bank, set))
+ goto bail;
+
+ return current_dir_block;
- bail1:
- close(fd);
bail:
- free (cache_file);
- return FcFalse;
+ free (current_dir_block);
+ return 0;
}
/* write serialized state to the cache file */
FcBool
-FcDirCacheWrite (int bank, FcFontSet *set, const FcChar8 *dir)
+FcDirCacheWrite (FcFontSet *set, const FcChar8 *dir)
{
FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- int fd, bytes_to_write, metadata_bytes;
+ int fd;
FcCache metadata;
off_t current_arch_start = 0, truncate_to;
char * current_arch_machine_name, * header;
- void * current_dir_block, *final_dir_block;
+ void * current_dir_block;
if (!cache_file)
goto bail;
- FcFontSetNewBank();
- bytes_to_write = FcFontSetNeededBytes (set);
- metadata_bytes = FcCacheNextOffset (sizeof (FcCache));
+ current_dir_block = FcDirCacheProduce (set, &metadata);
- if (!bytes_to_write)
+ if (!metadata.count)
{
unlink (cache_file);
free (cache_file);
return FcTrue;
}
- current_dir_block = malloc (bytes_to_write);
- memset (&metadata, 0, sizeof(FcCache));
- metadata.count = bytes_to_write;
- metadata.bank = bank;
if (!current_dir_block)
goto bail;
- final_dir_block = FcFontSetDistributeBytes (&metadata, current_dir_block);
-
- if ((char *)current_dir_block + bytes_to_write != final_dir_block)
- goto bail;
-
- if (!FcFontSetSerialize (bank, set))
- goto bail;
if (FcDebug () & FC_DBG_CACHE)
printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
fd = open(cache_file, O_RDWR | O_CREAT, 0666);
if (fd == -1)
- goto bail;
+ goto bail0;
- current_arch_machine_name = FcCacheProduceMachineSignature ();
+ current_arch_machine_name = FcCacheMachineSignature ();
current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
if (current_arch_start < 0)
current_arch_start = FcCacheNextOffset (lseek(fd, 0, SEEK_END));
if (!FcCacheMoveDown(fd, current_arch_start))
- goto bail1;
+ goto bail2;
current_arch_start = lseek(fd, 0, SEEK_CUR);
if (ftruncate (fd, current_arch_start) == -1)
- goto bail1;
+ goto bail2;
/* now write the address of the next offset */
- truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + metadata_bytes) + bytes_to_write) - current_arch_start;
-
+ truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache)) + metadata.count) - current_arch_start;
header = malloc (10 + strlen (current_arch_machine_name));
+ if (!header)
+ goto bail1;
sprintf (header, "%8x ", (int)truncate_to);
strcat (header, current_arch_machine_name);
- if (!FcCacheWriteString2 (fd, header))
+ if (!FcCacheWriteString (fd, header))
goto bail1;
- metadata.magic = FC_CACHE_MAGIC;
write (fd, &metadata, sizeof(FcCache));
lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
- write (fd, current_dir_block, bytes_to_write);
+ write (fd, current_dir_block, metadata.count);
/* this actually serves to pad out the cache file, if needed */
if (ftruncate (fd, current_arch_start + truncate_to) == -1)
close(fd);
return FcTrue;
+ bail2:
+ free (header);
bail1:
- free (current_dir_block);
free (current_arch_machine_name);
+ bail0:
+ free (current_dir_block);
bail:
unlink (cache_file);
free (cache_file);
}
static char *
-FcCacheProduceMachineSignature ()
+FcCacheMachineSignature ()
{
static char buf[MACHINE_SIGNATURE_SIZE];
int magic = ENDIAN_TEST;
return buf;
}
-/* if true, ignore the cache file */
-void
-FcCacheForce (FcBool f)
-{
- force = f;
-}
-
static int banks_ptr = 0, banks_alloc = 0;
static int * bankId = 0;
-int
-FcCacheBankCount (void)
-{
- return banks_ptr;
-}
-
-FcBool
+static FcBool
FcCacheHaveBank (int bank)
{
int i;
git.wh0rd.org / fontconfig.git / commitdiff
