[fontconfig.git] / fc-cat / fc-cat.c

/*
 * $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

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);
}

/* read serialized state from the cache file */
static FcBool
FcCacheFileRead (FcFontSet * set, FcStrSet *dirs, char * dir, 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];

    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 (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
        FcStrSetAdd (dirs, (FcChar8 *)subdirName);

    if (!FcDirCacheConsume (fd, dir, set))
	goto bail1;
	
    close(fd);
    free (cache_file);
    return FcTrue;

 bail1:
    close (fd);
 bail:
    free (cache_file);
    return FcFalse;
}

/*
 * 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 *cache_file)
{
    FcPattern	    *font;
    FcChar8	    *name, *dir;
    const FcChar8   *file, *base;
    int		    n;
    int		    id;
    FcBool	    ret;
    FcStrList	    *list;

    list = FcStrListCreate (dirs);
    if (!list)
	goto bail2;
    
    while ((dir = FcStrListNext (list)))
    {
	base = FcFileBaseName (cache_file, 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 (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 (!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:
bail1:
bail0:
    return FcFalse;
}

int
main (int argc, char **argv)
{
    int		i;
    int		ret;
#if HAVE_GETOPT_LONG || HAVE_GETOPT
    int		c;
    FcFontSet	*fs = FcFontSetCreate();
    FcStrSet    *dirs = FcStrSetCreate();

#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 (FcCacheFileRead (fs, dirs, dirname (argv[i]), argv[i]))
	FcCachePrintSet (fs, dirs, argv[i]);

    FcStrSetDestroy (dirs);
    FcFontSetDestroy (fs);

    return 0;
}
Commit	Line	Data
f28f090d PL	1	/*
	2	* $RCSId: xc/lib/fontconfig/fc-cache/fc-cache.c,v 1.8tsi Exp $
	3	*
	4	* Copyright © 2002 Keith Packard
	5	*
	6	* Permission to use, copy, modify, distribute, and sell this software and its
	7	* documentation for any purpose is hereby granted without fee, provided that
	8	* the above copyright notice appear in all copies and that both that
	9	* copyright notice and this permission notice appear in supporting
	10	* documentation, and that the name of Keith Packard not be used in
	11	* advertising or publicity pertaining to distribution of the software without
	12	* specific, written prior permission. Keith Packard makes no
	13	* representations about the suitability of this software for any purpose. It
	14	* is provided "as is" without express or implied warranty.
	15	*
	16	* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
	17	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
	18	* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
	19	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
	20	* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
	21	* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
	22	* PERFORMANCE OF THIS SOFTWARE.
	23	*/
	24
	25	#include <fontconfig/fontconfig.h>
	26	#include <../src/fccache.c>
	27	#include <stdio.h>
	28	#include <stdlib.h>
	29	#include <unistd.h>
e77c1718	30	#include <libgen.h>
f28f090d PL	31	#include <sys/types.h>
	32	#include <sys/stat.h>
	33	#include <errno.h>
	34	#ifdef HAVE_CONFIG_H
	35	#include <config.h>
	36	#else
	37	#ifdef linux
	38	#define HAVE_GETOPT_LONG 1
	39	#endif
	40	#define HAVE_GETOPT 1
	41	#endif
	42
	43	#ifndef HAVE_GETOPT
	44	#define HAVE_GETOPT 0
	45	#endif
	46	#ifndef HAVE_GETOPT_LONG
	47	#define HAVE_GETOPT_LONG 0
	48	#endif
	49
	50	#if HAVE_GETOPT_LONG
	51	#undef _GNU_SOURCE
	52	#define _GNU_SOURCE
	53	#include <getopt.h>
	54	const struct option longopts[] = {
	55	{"version", 0, 0, 'V'},
	56	{"help", 0, 0, '?'},
	57	{NULL,0,0,0},
	58	};
	59	#else
	60	#if HAVE_GETOPT
	61	extern char *optarg;
	62	extern int optind, opterr, optopt;
	63	#endif
	64	#endif
	65
	66	/*
	67	* POSIX has broken stdio so that getc must do thread-safe locking,
	68	* this is a serious performance problem for applications doing large
	69	* amounts of IO with getc (as is done here). If available, use
	70	* the getc_unlocked varient instead.
	71	*/
	72
	73	#if defined(getc_unlocked) \|\| defined(_IO_getc_unlocked)
	74	#define GETC(f) getc_unlocked(f)
	75	#define PUTC(c,f) putc_unlocked(c,f)
	76	#else
	77	#define GETC(f) getc(f)
	78	#define PUTC(c,f) putc(c,f)
	79	#endif
	80
	81	static FcBool
	82	FcCacheWriteChars (FILE f, const FcChar8 chars)
	83	{
	84	FcChar8 c;
	85	while ((c = *chars++))
	86	{
	87	switch (c) {
	88	case '"':
	89	case '\\':
	90	if (PUTC ('\\', f) == EOF)
	91	return FcFalse;
	92	/* fall through */
	93	default:
	94	if (PUTC (c, f) == EOF)
95	return FcFalse;
96	}
97	}
98	return FcTrue;
99	}
100
101	static FcBool
102	FcCacheWriteUlong (FILE *f, unsigned long t)
103	{
104	int pow;
105	unsigned long temp, digit;
106
107	temp = t;
108	pow = 1;
109	while (temp >= 10)
110	{
111	temp /= 10;
112	pow *= 10;
113	}
114	temp = t;
115	while (pow)
116	{
117	digit = temp / pow;
118	if (PUTC ((char) digit + '0', f) == EOF)
119	return FcFalse;
120	temp = temp - pow * digit;
121	pow = pow / 10;
122	}
123	return FcTrue;
124	}
125
126	static FcBool
127	FcCacheWriteInt (FILE *f, int i)
128	{
129	return FcCacheWriteUlong (f, (unsigned long) i);
130	}
131
132	static FcBool
133	FcCacheWriteStringOld (FILE f, const FcChar8 string)
134	{
135
136	if (PUTC ('"', f) == EOF)
137	return FcFalse;
138	if (!FcCacheWriteChars (f, string))
139	return FcFalse;
140	if (PUTC ('"', f) == EOF)
141	return FcFalse;
142	return FcTrue;
143	}
144
145	static void
146	usage (char *program)
147	{
148	#if HAVE_GETOPT_LONG
149	fprintf (stderr, "usage: %s [-V?] [--version] [--help] <fonts.cache-2>\n",
150	program);
151	#else
152	fprintf (stderr, "usage: %s [-fsvV?] <fonts.cache-2>\n",
153	program);
154	#endif
155	fprintf (stderr, "Reads font information caches in <fonts.cache-2>\n");
156	fprintf (stderr, "\n");
157	#if HAVE_GETOPT_LONG
158	fprintf (stderr, " -V, --version display font config version and exit\n");
159	fprintf (stderr, " -?, --help display this help and exit\n");
160	#else
161	fprintf (stderr, " -V (version) display font config version and exit\n");
162	fprintf (stderr, " -? (help) display this help and exit\n");
163	#endif
164	exit (1);
165	}
166
167	/* read serialized state from the cache file */
168	static FcBool
e77c1718	169	FcCacheFileRead (FcFontSet * set, FcStrSet dirs, char dir, char *cache_file)
f28f090d PL	170	{
	171	int fd;
	172	char * current_arch_machine_name;
	173	char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
	174	off_t current_arch_start = 0;
	175	char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
	176
	177	if (!cache_file)
	178	goto bail;
	179
	180	current_arch_machine_name = FcCacheMachineSignature();
	181	fd = open(cache_file, O_RDONLY);
	182	if (fd == -1)
	183	goto bail;
	184
	185	current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
	186	if (current_arch_start < 0)
	187	goto bail1;
	188
	189	lseek (fd, current_arch_start, SEEK_SET);
	190	if (FcCacheReadString (fd, candidate_arch_machine_name,
	191	sizeof (candidate_arch_machine_name)) == 0)
	192	goto bail1;
	193
	194	while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
	195	FcStrSetAdd (dirs, (FcChar8 *)subdirName);
	196
e77c1718	197	if (!FcDirCacheConsume (fd, dir, set))
f28f090d PL	198	goto bail1;
	199
	200	close(fd);
	201	free (cache_file);
	202	return FcTrue;
	203
	204	bail1:
	205	close (fd);
	206	bail:
	207	free (cache_file);
	208	return FcFalse;
	209	}
	210
	211	/*
	212	* return the path from the directory containing 'cache' to 'file'
	213	*/
	214
	215	static const FcChar8 *
	216	FcFileBaseName (const char cache, const FcChar8 file)
	217	{
	218	const FcChar8 *cache_slash;
	219
	220	cache_slash = FcStrLastSlash ((const FcChar8 *)cache);
	221	if (cache_slash && !strncmp ((const char ) cache, (const char ) file,
	222	(cache_slash + 1) - (const FcChar8 *)cache))
	223	return file + ((cache_slash + 1) - (const FcChar8 *)cache);
	224	return file;
	225	}
	226
	227	FcBool
	228	FcCachePrintSet (FcFontSet set, FcStrSet dirs, char *cache_file)
	229	{
	230	FcPattern *font;
	231	FcChar8 name, dir;
	232	const FcChar8 file, base;
	233	int n;
	234	int id;
	235	FcBool ret;
	236	FcStrList *list;
	237
	238	list = FcStrListCreate (dirs);
	239	if (!list)
	240	goto bail2;
	241
	242	while ((dir = FcStrListNext (list)))
	243	{
	244	base = FcFileBaseName (cache_file, dir);
	245	if (!FcCacheWriteStringOld (stdout, base))
	246	goto bail3;
	247	if (PUTC (' ', stdout) == EOF)
	248	goto bail3;
	249	if (!FcCacheWriteInt (stdout, 0))
	250	goto bail3;
	251	if (PUTC (' ', stdout) == EOF)
	252	goto bail3;
	253	if (!FcCacheWriteStringOld (stdout, FC_FONT_FILE_DIR))
	254	goto bail3;
	255	if (PUTC ('\n', stdout) == EOF)
	256	goto bail3;
	257	}
	258
	259	for (n = 0; n < set->nfont; n++)
	260	{
	261	font = set->fonts[n];
262	if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
263	goto bail3;
264	base = FcFileBaseName (cache_file, file);
265	if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
266	goto bail3;
267	if (FcDebug () & FC_DBG_CACHEV)
268	printf (" write file \"%s\"\n", base);
269	if (!FcCacheWriteStringOld (stdout, base))
270	goto bail3;
271	if (PUTC (' ', stdout) == EOF)
272	goto bail3;
273	if (!FcCacheWriteInt (stdout, id))
274	goto bail3;
275	if (PUTC (' ', stdout) == EOF)
276	goto bail3;
277	name = FcNameUnparse (font);
278	if (!name)
279	goto bail3;
280	ret = FcCacheWriteStringOld (stdout, name);
281	FcStrFree (name);
282	if (!ret)
283	goto bail3;
284	if (PUTC ('\n', stdout) == EOF)
285	goto bail3;
286	}
287
288	FcStrListDone (list);
289
290	return FcTrue;
291
292	bail3:
293	FcStrListDone (list);
294	bail2:
295	bail1:
296	bail0:
297	return FcFalse;
298	}
299
300	int
301	main (int argc, char **argv)
302	{
303	int i;
304	int ret;
305	#if HAVE_GETOPT_LONG \|\| HAVE_GETOPT
306	int c;
307	FcFontSet *fs = FcFontSetCreate();
308	FcStrSet *dirs = FcStrSetCreate();
309
310	#if HAVE_GETOPT_LONG
311	while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
312	#else
313	while ((c = getopt (argc, argv, "fsVv?")) != -1)
314	#endif
315	{
316	switch (c) {
317	case 'V':
318	fprintf (stderr, "fontconfig version %d.%d.%d\n",
319	FC_MAJOR, FC_MINOR, FC_REVISION);
320	exit (0);
321	default:
322	usage (argv[0]);
323	}
324	}
325	i = optind;
326	#else
327	i = 1;
328	#endif
329
e77c1718	330	if (FcCacheFileRead (fs, dirs, dirname (argv[i]), argv[i]))
f28f090d PL	331	FcCachePrintSet (fs, dirs, argv[i]);
	332
	333	FcStrSetDestroy (dirs);
	334	FcFontSetDestroy (fs);
	335
	336	return 0;
	337	}