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fontconfig/src/fcdir.c

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/*
* fontconfig/src/fcdir.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"
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
FcBool
FcFileIsDir (const FcChar8 *file)
{
struct stat statb;
if (FcStat (file, &statb) != 0)
return FcFalse;
return S_ISDIR(statb.st_mode);
}
FcBool
FcFileIsLink (const FcChar8 *file)
{
#if HAVE_LSTAT
struct stat statb;
if (lstat ((const char *)file, &statb) != 0)
return FcFalse;
return S_ISLNK (statb.st_mode);
#else
return FcFalse;
#endif
}
FcBool
FcFileIsFile (const FcChar8 *file)
{
struct stat statb;
if (FcStat (file, &statb) != 0)
return FcFalse;
return S_ISREG (statb.st_mode);
}
static FcBool
FcFileScanFontConfig (FcFontSet *set,
const FcChar8 *file,
FcConfig *config)
{
int i;
FcBool ret = FcTrue;
int old_nfont = set->nfont;
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
if (FcDebug () & FC_DBG_SCAN)
{
printf ("\tScanning file %s...", file);
fflush (stdout);
}
if (!FcFreeTypeQueryAll (file, -1, NULL, NULL, set))
return FcFalse;
if (FcDebug () & FC_DBG_SCAN)
printf ("done\n");
for (i = old_nfont; i < set->nfont; i++)
{
FcPattern *font = set->fonts[i];
/*
* Get rid of sysroot here so that targeting scan rule may contains FC_FILE pattern
* and they should usually expect without sysroot.
*/
if (sysroot)
{
size_t len = strlen ((const char *)sysroot);
FcChar8 *f = NULL;
if (FcPatternObjectGetString (font, FC_FILE_OBJECT, 0, &f) == FcResultMatch &&
strncmp ((const char *)f, (const char *)sysroot, len) == 0)
{
FcChar8 *s = FcStrdup (f);
FcPatternObjectDel (font, FC_FILE_OBJECT);
if (s[len] != '/')
len--;
else if (s[len+1] == '/')
len++;
FcPatternObjectAddString (font, FC_FILE_OBJECT, &s[len]);
FcStrFree (s);
}
}
/*
* Edit pattern with user-defined rules
*/
if (config && !FcConfigSubstitute (config, font, FcMatchScan))
ret = FcFalse;
if (!FcPatternAddFullname (font))
ret = FcFalse;
if (FcDebug() & FC_DBG_SCANV)
{
printf ("Final font pattern:\n");
FcPatternPrint (font);
}
}
return ret;
}
FcBool
FcFileScanConfig (FcFontSet *set,
FcStrSet *dirs,
const FcChar8 *file,
FcConfig *config)
{
if (FcFileIsDir (file))
{
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
const FcChar8 *d = file;
size_t len;
if (sysroot)
{
len = strlen ((const char *)sysroot);
if (strncmp ((const char *)file, (const char *)sysroot, len) == 0)
{
if (file[len] != '/')
len--;
else if (file[len+1] == '/')
len++;
d = &file[len];
}
}
return FcStrSetAdd (dirs, d);
}
else
{
if (set)
return FcFileScanFontConfig (set, file, config);
else
return FcTrue;
}
}
FcBool
FcFileScan (FcFontSet *set,
FcStrSet *dirs,
FcFileCache *cache FC_UNUSED,
FcBlanks *blanks FC_UNUSED,
const FcChar8 *file,
FcBool force FC_UNUSED)
{
FcConfig *config;
FcBool ret;
config = FcConfigReference (NULL);
if (!config)
return FcFalse;
ret = FcFileScanConfig (set, dirs, file, config);
FcConfigDestroy (config);
return ret;
}
/*
* Strcmp helper that takes pointers to pointers, copied from qsort(3) manpage
*/
static int
cmpstringp(const void *p1, const void *p2)
{
return strcmp(* (char **) p1, * (char **) p2);
}
FcBool
FcDirScanConfig (FcFontSet *set,
FcStrSet *dirs,
const FcChar8 *dir,
FcBool force, /* XXX unused */
FcConfig *config)
{
DIR *d;
struct dirent *e;
FcStrSet *files;
FcChar8 *file_prefix, *s_dir = NULL;
FcChar8 *base;
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
FcBool ret = FcTrue;
int i;
if (!force)
return FcFalse;
if (!set && !dirs)
return FcTrue;
/* freed below */
file_prefix = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
if (!file_prefix) {
ret = FcFalse;
goto bail;
}
strcpy ((char *) file_prefix, (char *) dir);
strcat ((char *) file_prefix, FC_DIR_SEPARATOR_S);
base = file_prefix + strlen ((char *) file_prefix);
if (sysroot)
s_dir = FcStrBuildFilename (sysroot, dir, NULL);
else
s_dir = FcStrdup (dir);
if (!s_dir) {
ret = FcFalse;
goto bail;
}
if (FcDebug () & FC_DBG_SCAN)
printf ("\tScanning dir %s\n", s_dir);
d = opendir ((char *) s_dir);
if (!d)
{
/* Don't complain about missing directories */
if (errno != ENOENT)
ret = FcFalse;
goto bail;
}
files = FcStrSetCreateEx (FCSS_ALLOW_DUPLICATES | FCSS_GROW_BY_64);
if (!files)
{
ret = FcFalse;
goto bail1;
}
while ((e = readdir (d)))
{
if (e->d_name[0] != '.' && strlen (e->d_name) < FC_MAX_FILE_LEN)
{
strcpy ((char *) base, (char *) e->d_name);
if (!FcStrSetAdd (files, file_prefix)) {
ret = FcFalse;
goto bail2;
}
}
}
/*
* Sort files to make things prettier
*/
qsort(files->strs, files->num, sizeof(FcChar8 *), cmpstringp);
/*
* Scan file files to build font patterns
*/
for (i = 0; i < files->num; i++)
FcFileScanConfig (set, dirs, files->strs[i], config);
bail2:
FcStrSetDestroy (files);
bail1:
closedir (d);
bail:
if (s_dir)
free (s_dir);
if (file_prefix)
free (file_prefix);
return ret;
}
FcBool
FcDirScan (FcFontSet *set,
FcStrSet *dirs,
FcFileCache *cache FC_UNUSED,
FcBlanks *blanks FC_UNUSED,
const FcChar8 *dir,
FcBool force FC_UNUSED)
{
FcConfig *config;
FcBool ret;
if (cache || !force)
return FcFalse;
config = FcConfigReference (NULL);
if (!config)
return FcFalse;
ret = FcDirScanConfig (set, dirs, dir, force, config);
FcConfigDestroy (config);
return ret;
}
/*
* Scan the specified directory and construct a cache of its contents
*/
FcCache *
FcDirCacheScan (const FcChar8 *dir, FcConfig *config)
{
FcStrSet *dirs;
FcFontSet *set;
FcCache *cache = NULL;
struct stat dir_stat;
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
FcChar8 *d;
#ifndef _WIN32
int fd = -1;
#endif
if (sysroot)
d = FcStrBuildFilename (sysroot, dir, NULL);
else
d = FcStrdup (dir);
if (FcDebug () & FC_DBG_FONTSET)
printf ("cache scan dir %s\n", d);
if (FcStatChecksum (d, &dir_stat) < 0)
goto bail;
set = FcFontSetCreate();
if (!set)
goto bail;
dirs = FcStrSetCreateEx (FCSS_GROW_BY_64);
if (!dirs)
goto bail1;
#ifndef _WIN32
fd = FcDirCacheLock (dir, config);
#endif
/*
* Scan the dir
*/
/* Do not pass sysroot here. FcDirScanConfig() do take care of it */
if (!FcDirScanConfig (set, dirs, dir, FcTrue, config))
goto bail2;
/*
* Build the cache object
*/
cache = FcDirCacheBuild (set, dir, &dir_stat, dirs);
if (!cache)
goto bail2;
/*
* Write out the cache file, ignoring any troubles
*/
FcDirCacheWrite (cache, config);
bail2:
#ifndef _WIN32
FcDirCacheUnlock (fd);
#endif
FcStrSetDestroy (dirs);
bail1:
FcFontSetDestroy (set);
bail:
FcStrFree (d);
return cache;
}
FcCache *
FcDirCacheRescan (const FcChar8 *dir, FcConfig *config)
{
FcCache *cache;
FcCache *new = NULL;
struct stat dir_stat;
FcStrSet *dirs;
const FcChar8 *sysroot;
FcChar8 *d = NULL;
#ifndef _WIN32
int fd = -1;
#endif
config = FcConfigReference (config);
if (!config)
return NULL;
sysroot = FcConfigGetSysRoot (config);
cache = FcDirCacheLoad (dir, config, NULL);
if (!cache)
goto bail;
if (sysroot)
d = FcStrBuildFilename (sysroot, dir, NULL);
else
d = FcStrdup (dir);
if (FcStatChecksum (d, &dir_stat) < 0)
goto bail;
dirs = FcStrSetCreateEx (FCSS_GROW_BY_64);
if (!dirs)
goto bail;
#ifndef _WIN32
fd = FcDirCacheLock (dir, config);
#endif
/*
* Scan the dir
*/
/* Do not pass sysroot here. FcDirScanConfig() do take care of it */
if (!FcDirScanConfig (NULL, dirs, dir, FcTrue, config))
goto bail1;
/*
* Rebuild the cache object
*/
new = FcDirCacheRebuild (cache, &dir_stat, dirs);
if (!new)
goto bail1;
FcDirCacheUnload (cache);
/*
* Write out the cache file, ignoring any troubles
*/
FcDirCacheWrite (new, config);
bail1:
#ifndef _WIN32
FcDirCacheUnlock (fd);
#endif
FcStrSetDestroy (dirs);
bail:
if (d)
FcStrFree (d);
FcConfigDestroy (config);
return new;
}
/*
* Read (or construct) the cache for a directory
*/
FcCache *
FcDirCacheRead (const FcChar8 *dir, FcBool force, FcConfig *config)
{
FcCache *cache = NULL;
config = FcConfigReference (config);
/* Try to use existing cache file */
if (!force)
cache = FcDirCacheLoad (dir, config, NULL);
/* Not using existing cache file, construct new cache */
if (!cache)
cache = FcDirCacheScan (dir, config);
FcConfigDestroy (config);
return cache;
}
FcBool
FcDirSave (FcFontSet *set FC_UNUSED, FcStrSet * dirs FC_UNUSED, const FcChar8 *dir FC_UNUSED)
{
return FcFalse; /* XXX deprecated */
}
#define __fcdir__
#include "fcaliastail.h"
#undef __fcdir__
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