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fontconfig/fc-cat/fc-cat.c

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/*
* $RCSId: xc/lib/fontconfig/fc-cache/fc-cache.c,v 1.8tsi Exp $
*
* Copyright © 2002 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 <fontconfig/fontconfig.h>
#include <../src/fccache.c>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#else
#ifdef linux
#define HAVE_GETOPT_LONG 1
#endif
#define HAVE_GETOPT 1
#endif
#ifndef HAVE_GETOPT
#define HAVE_GETOPT 0
#endif
#ifndef HAVE_GETOPT_LONG
#define HAVE_GETOPT_LONG 0
#endif
#if HAVE_GETOPT_LONG
#undef _GNU_SOURCE
#define _GNU_SOURCE
#include <getopt.h>
const struct option longopts[] = {
{"version", 0, 0, 'V'},
{"help", 0, 0, '?'},
{NULL,0,0,0},
};
#else
#if HAVE_GETOPT
extern char *optarg;
extern int optind, opterr, optopt;
#endif
#endif
/*
* 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
FcBool
FcCachePrintSet (FcFontSet *set, FcStrSet *dirs, char *base_name);
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
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
FcCacheWriteStringOld (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 void
usage (char *program)
{
#if HAVE_GETOPT_LONG
fprintf (stderr, "usage: %s [-V?] [--version] [--help] <fonts.cache-2>\n",
program);
#else
fprintf (stderr, "usage: %s [-fsvV?] <fonts.cache-2>\n",
program);
#endif
fprintf (stderr, "Reads font information caches in <fonts.cache-2>\n");
fprintf (stderr, "\n");
#if HAVE_GETOPT_LONG
fprintf (stderr, " -V, --version display font config version and exit\n");
fprintf (stderr, " -?, --help display this help and exit\n");
#else
fprintf (stderr, " -V (version) display font config version and exit\n");
fprintf (stderr, " -? (help) display this help and exit\n");
#endif
exit (1);
}
static FcBool
FcCacheGlobalFileReadAndPrint (FcFontSet * set, FcStrSet *dirs, char *cache_file)
{
char name_buf[8192];
int fd;
char * current_arch_machine_name;
char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
off_t current_arch_start = 0;
if (!cache_file)
goto bail;
current_arch_machine_name = FcCacheMachineSignature();
fd = open(cache_file, O_RDONLY);
if (fd == -1)
goto bail;
current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
if (current_arch_start < 0)
goto bail1;
lseek (fd, current_arch_start, SEEK_SET);
if (FcCacheReadString (fd, candidate_arch_machine_name,
sizeof (candidate_arch_machine_name)) == 0)
goto bail1;
while (1)
{
char * dir, * ls;
FcCacheReadString (fd, name_buf, sizeof (name_buf));
if (!strlen(name_buf))
break;
printf ("fc-cat: printing global cache contents for dir %s\n",
name_buf);
if (!FcDirCacheConsume (fd, name_buf, set, 0))
goto bail1;
dir = malloc (strlen (name_buf) + 2);
if (!dir)
goto bail1;
strcpy (dir, name_buf);
strcat (dir, "/");
FcCachePrintSet (set, dirs, dir);
free (dir);
FcFontSetDestroy (set);
set = FcFontSetCreate();
}
bail1:
close (fd);
bail:
return FcFalse;
}
/* read serialized state from the cache file */
static char *
FcCacheFileRead (FcFontSet * set, FcStrSet *dirs, char *cache_file)
{
int fd;
char * current_arch_machine_name;
char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
off_t current_arch_start = 0;
char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
static char name_buf[8192], *dir;
FcChar8 * ls;
if (!cache_file)
goto bail;
current_arch_machine_name = FcCacheMachineSignature();
fd = open(cache_file, O_RDONLY);
if (fd == -1)
goto bail;
FcCacheReadString (fd, name_buf, sizeof (name_buf));
if (!strlen (name_buf))
goto bail;
if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) == 0)
goto bail;
printf ("fc-cat: printing directory cache for cache which would be named %s\n",
name_buf);
current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
if (current_arch_start < 0)
goto bail1;
while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
FcStrSetAdd (dirs, (FcChar8 *)subdirName);
dir = strdup(name_buf);
ls = FcStrLastSlash ((FcChar8 *)dir);
if (ls)
*ls = 0;
if (!FcDirCacheConsume (fd, dir, set, 0))
goto bail2;
free (dir);
close(fd);
return name_buf;
bail2:
free (dir);
bail1:
close (fd);
bail:
return 0;
}
/*
* return the path from the directory containing 'cache' to 'file'
*/
static const FcChar8 *
FcFileBaseName (const char *cache, const FcChar8 *file)
{
const FcChar8 *cache_slash;
cache_slash = FcStrLastSlash ((const FcChar8 *)cache);
if (cache_slash && !strncmp ((const char *) cache, (const char *) file,
(cache_slash + 1) - (const FcChar8 *)cache))
return file + ((cache_slash + 1) - (const FcChar8 *)cache);
return file;
}
FcBool
FcCachePrintSet (FcFontSet *set, FcStrSet *dirs, char *base_name)
{
FcPattern *font;
FcChar8 *name, *dir;
const FcChar8 *file, *base;
int ret;
int n;
int id;
FcStrList *list;
list = FcStrListCreate (dirs);
if (!list)
goto bail2;
while ((dir = FcStrListNext (list)))
{
base = FcFileBaseName (base_name, dir);
if (!FcCacheWriteStringOld (stdout, base))
goto bail3;
if (PUTC (' ', stdout) == EOF)
goto bail3;
if (!FcCacheWriteInt (stdout, 0))
goto bail3;
if (PUTC (' ', stdout) == EOF)
goto bail3;
if (!FcCacheWriteStringOld (stdout, FC_FONT_FILE_DIR))
goto bail3;
if (PUTC ('\n', stdout) == 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 (base_name, file);
if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
goto bail3;
if (FcDebug () & FC_DBG_CACHEV)
printf (" write file \"%s\"\n", base);
if (!FcCacheWriteStringOld (stdout, base))
goto bail3;
if (PUTC (' ', stdout) == EOF)
goto bail3;
if (!FcCacheWriteInt (stdout, id))
goto bail3;
if (PUTC (' ', stdout) == EOF)
goto bail3;
name = FcNameUnparse (font);
if (!name)
goto bail3;
ret = FcCacheWriteStringOld (stdout, name);
FcStrFree (name);
if (!ret)
goto bail3;
if (PUTC ('\n', stdout) == EOF)
goto bail3;
}
FcStrListDone (list);
return FcTrue;
bail3:
FcStrListDone (list);
bail2:
return FcFalse;
}
int
main (int argc, char **argv)
{
int i;
#if HAVE_GETOPT_LONG || HAVE_GETOPT
int c;
FcFontSet *fs = FcFontSetCreate();
FcStrSet *dirs = FcStrSetCreate();
char *name_buf;
#if HAVE_GETOPT_LONG
while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
#else
while ((c = getopt (argc, argv, "fsVv?")) != -1)
#endif
{
switch (c) {
case 'V':
fprintf (stderr, "fontconfig version %d.%d.%d\n",
FC_MAJOR, FC_MINOR, FC_REVISION);
exit (0);
default:
usage (argv[0]);
}
}
i = optind;
#else
i = 1;
#endif
if (i >= argc)
usage (argv[0]);
if (name_buf = FcCacheFileRead (fs, dirs, argv[i]))
FcCachePrintSet (fs, dirs, name_buf);
else
{
FcStrSetDestroy (dirs);
dirs = FcStrSetCreate ();
if (FcCacheGlobalFileReadAndPrint (fs, dirs, argv[i]))
;
}
FcStrSetDestroy (dirs);
FcFontSetDestroy (fs);
return 0;
}
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