/*
* Look for a cache file for the specified dir. Attempt
* to use each one we find, stopping when the callback
* indicates success
*/
static FcBool
FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
FcBool (*callback) (FcConfig *config, int fd, struct stat *fd_stat,
struct stat *dir_stat, void *closure),
void *closure, FcChar8 **cache_file_ret)
{
int fd = -1;
FcChar8 cache_base[CACHEBASE_LEN];
FcStrList *list;
FcChar8 *cache_dir, *d;
struct stat file_stat, dir_stat;
FcBool ret = FcFalse;
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
if (sysroot)
d = FcStrBuildFilename (sysroot, dir, NULL);
else
d = FcStrdup (dir);
if (FcStatChecksum (d, &dir_stat) < 0)
{
FcStrFree (d);
return FcFalse;
}
FcStrFree (d);
FcDirCacheBasename (dir, cache_base);
list = FcStrListCreate (config->cacheDirs);
if (!list)
return FcFalse;
while ((cache_dir = FcStrListNext (list)))
{
FcChar8 *cache_hashed;
if (sysroot)
cache_hashed = FcStrBuildFilename (sysroot, cache_dir, cache_base, NULL);
else
cache_hashed = FcStrBuildFilename (cache_dir, cache_base, NULL);
if (!cache_hashed)
break;
fd = FcDirCacheOpenFile (cache_hashed, &file_stat);
if (fd >= 0) {
ret = (*callback) (config, fd, &file_stat, &dir_stat, closure);
close (fd);
if (ret)
{
if (cache_file_ret)
*cache_file_ret = cache_hashed;
else
FcStrFree (cache_hashed);
break;
}
}
FcStrFree (cache_hashed);
}
FcStrListDone (list);
return ret;
}
static FcBool
FcCacheTimeValid (FcConfig *config, FcCache *cache, struct stat *dir_stat)
{
struct stat dir_static;
if (!dir_stat)
{
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
FcChar8 *d;
if (sysroot)
d = FcStrBuildFilename (sysroot, FcCacheDir (cache), NULL);
else
d = FcStrdup (FcCacheDir (cache));
if (FcStatChecksum (d, &dir_static) < 0)
{
FcStrFree (d);
return FcFalse;
}
FcStrFree (d);
dir_stat = &dir_static;
}
if (FcDebug () & FC_DBG_CACHE)
printf ("FcCacheTimeValid dir \"%s\" cache checksum %d dir checksum %d\n",
FcCacheDir (cache), cache->checksum, (int) dir_stat->st_mtime);
return cache->checksum == (int) dir_stat->st_mtime;
}
static FcBool
FcCacheTimeValid (FcCache *cache, struct stat *dir_stat)
{
struct stat dir_static;
if (!dir_stat)
{
if (FcStatChecksum (FcCacheDir (cache), &dir_static) < 0)
return FcFalse;
dir_stat = &dir_static;
}
if (FcDebug () & FC_DBG_CACHE)
printf ("FcCacheTimeValid dir \"%s\" cache checksum %d dir checksum %d\n",
FcCacheDir (cache), cache->checksum, (int) dir_stat->st_mtime);
return cache->checksum == (int) dir_stat->st_mtime;
}
static FcBool
FcCacheTimeValid (FcConfig *config, FcCache *cache, struct stat *dir_stat)
{
struct stat dir_static;
FcBool fnano = FcTrue;
if (!dir_stat)
{
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
FcChar8 *d;
if (sysroot)
d = FcStrBuildFilename (sysroot, FcCacheDir (cache), NULL);
else
d = FcStrdup (FcCacheDir (cache));
if (FcStatChecksum (d, &dir_static) < 0)
{
FcStrFree (d);
return FcFalse;
}
FcStrFree (d);
dir_stat = &dir_static;
}
#ifdef HAVE_STRUCT_STAT_ST_MTIM
fnano = (cache->checksum_nano == dir_stat->st_mtim.tv_nsec);
if (FcDebug () & FC_DBG_CACHE)
printf ("FcCacheTimeValid dir \"%s\" cache checksum %d.%ld dir checksum %d.%ld\n",
FcCacheDir (cache), cache->checksum, (long)cache->checksum_nano, (int) dir_stat->st_mtime, dir_stat->st_mtim.tv_nsec);
#else
if (FcDebug () & FC_DBG_CACHE)
printf ("FcCacheTimeValid dir \"%s\" cache checksum %d dir checksum %d\n",
FcCacheDir (cache), cache->checksum, (int) dir_stat->st_mtime);
#endif
return cache->checksum == (int) dir_stat->st_mtime && fnano;
}
/*
* Scan the specified directory and construct a cache of its contents
*/
FcCache *
FcDirCacheScan (const FcChar8 *dir, FcConfig *config)
{
FcStrSet *dirs;
FcBool ret = FcTrue;
FcFontSet *set;
FcCache *cache = NULL;
struct stat dir_stat;
if (FcDebug () & FC_DBG_FONTSET)
printf ("cache scan dir %s\n", dir);
if (FcStatChecksum ((char *) dir, &dir_stat) < 0)
{
if (errno != ENOENT)
ret = FcFalse;
goto bail;
}
set = FcFontSetCreate();
if (!set)
{
ret = FcFalse;
goto bail;
}
dirs = FcStrSetCreate ();
if (!dirs)
{
ret = FcFalse;
goto bail1;
}
/*
* Scan the dir
*/
if (!FcDirScanConfig (set, dirs, NULL, dir, FcTrue, config))
{
ret = FcFalse;
goto bail2;
}
/*
* Build the cache object
*/
cache = FcDirCacheBuild (set, dir, &dir_stat, dirs);
if (!cache)
{
ret = FcFalse;
goto bail2;
}
/*
* Write out the cache file, ignoring any troubles
*/
FcDirCacheWrite (cache, config);
bail2:
FcStrSetDestroy (dirs);
bail1:
FcFontSetDestroy (set);
bail:
return cache;
}
