[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.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#else
#ifdef linux
#define HAVE_GETOPT_LONG 1
#endif
#define HAVE_GETOPT 1
#endif

#include <fontconfig/fontconfig.h>
#include <../src/fccache.c>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>

#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);
}

/* read serialized state from the cache file */
static char *
FcCacheFileRead (FcFontSet * set, FcStrSet *dirs, char *cache_file)
{
    FILE *file;
    int fd;
    char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
    static char name_buf[8192];
    FcChar8 * ls;
    char * buf;
    int i;

    if (!cache_file)
        goto bail;

    file = fopen(cache_file, "rb");
    if (file == NULL)
        goto bail;

    if (!FcDirCacheConsume (file, set, dirs, NULL, name_buf))
	goto bail1;
    
    fclose (file);
    
    printf ("fc-cat: printing directory cache for cache which would be named %s\n", 
	    name_buf);

    return name_buf;

 bail1:
    fclose (file);
 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;
    FcConfig	*config;

#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

    config = FcInitLoadConfig ();
    if (!config)
    {
	fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
	return 1;
    }
    FcConfigSetCurrent (config);
    
    if (i >= argc)
        usage (argv[0]);

    if (FcFileIsDir ((const FcChar8 *)argv[i]))
    {
        char * dummy_name = (char *)FcStrPlus ((FcChar8 *)argv[i], 
                                               (FcChar8 *)"/dummy");
        if (!FcDirScanConfig (fs, dirs, 0, 
                              (const FcChar8 *)argv[i], FcFalse, config))
            fprintf (stderr, "couldn't load font dir %s\n", argv[i]);
        else
        {
            /* sorry, we can't tell you where the cache file is. */
            FcCachePrintSet (fs, dirs, dummy_name);
            FcStrFree ((FcChar8 *)dummy_name);
        }
    }
    else if ((name_buf = FcCacheFileRead (fs, dirs, argv[i])) != 0)
	FcCachePrintSet (fs, dirs, name_buf);
    else
    {
	printf ("nothing to do\n");
    }

    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
f28f090d PL	25	#ifdef HAVE_CONFIG_H
	26	#include <config.h>
	27	#else
	28	#ifdef linux
	29	#define HAVE_GETOPT_LONG 1
	30	#endif
	31	#define HAVE_GETOPT 1
	32	#endif
	33
f045376c PL	34	#include <fontconfig/fontconfig.h>
	35	#include <../src/fccache.c>
	36	#include <stdio.h>
	37	#include <stdlib.h>
	38	#include <unistd.h>
	39	#include <sys/types.h>
	40	#include <sys/stat.h>
	41	#include <errno.h>
	42
f28f090d PL	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
982b5982	81	FcBool
c60ec7cc	82	FcCachePrintSet (FcFontSet set, FcStrSet dirs, char *base_name);
982b5982	83
f28f090d PL	84	static FcBool
	85	FcCacheWriteChars (FILE f, const FcChar8 chars)
	86	{
	87	FcChar8 c;
	88	while ((c = *chars++))
	89	{
	90	switch (c) {
	91	case '"':
	92	case '\\':
	93	if (PUTC ('\\', f) == EOF)
	94	return FcFalse;
	95	/* fall through */
	96	default:
	97	if (PUTC (c, f) == EOF)
	98	return FcFalse;
	99	}
	100	}
	101	return FcTrue;
	102	}
	103
	104	static FcBool
	105	FcCacheWriteUlong (FILE *f, unsigned long t)
	106	{
	107	int pow;
	108	unsigned long temp, digit;
	109
	110	temp = t;
	111	pow = 1;
	112	while (temp >= 10)
	113	{
	114	temp /= 10;
	115	pow *= 10;
	116	}
	117	temp = t;
	118	while (pow)
	119	{
	120	digit = temp / pow;
	121	if (PUTC ((char) digit + '0', f) == EOF)
	122	return FcFalse;
	123	temp = temp - pow * digit;
	124	pow = pow / 10;
	125	}
	126	return FcTrue;
	127	}
	128
	129	static FcBool
	130	FcCacheWriteInt (FILE *f, int i)
	131	{
	132	return FcCacheWriteUlong (f, (unsigned long) i);
	133	}
	134
	135	static FcBool
	136	FcCacheWriteStringOld (FILE f, const FcChar8 string)
	137	{
	138
	139	if (PUTC ('"', f) == EOF)
	140	return FcFalse;
	141	if (!FcCacheWriteChars (f, string))
	142	return FcFalse;
	143	if (PUTC ('"', f) == EOF)
	144	return FcFalse;
	145	return FcTrue;
	146	}
	147
148	static void
149	usage (char *program)
150	{
151	#if HAVE_GETOPT_LONG
152	fprintf (stderr, "usage: %s [-V?] [--version] [--help] <fonts.cache-2>\n",
153	program);
154	#else
155	fprintf (stderr, "usage: %s [-fsvV?] <fonts.cache-2>\n",
156	program);
157	#endif
158	fprintf (stderr, "Reads font information caches in <fonts.cache-2>\n");
159	fprintf (stderr, "\n");
160	#if HAVE_GETOPT_LONG
161	fprintf (stderr, " -V, --version display font config version and exit\n");
162	fprintf (stderr, " -?, --help display this help and exit\n");
163	#else
164	fprintf (stderr, " -V (version) display font config version and exit\n");
165	fprintf (stderr, " -? (help) display this help and exit\n");
166	#endif
167	exit (1);
168	}
169
170	/* read serialized state from the cache file */
c60ec7cc PL	171	static char *
c60ec7cc PL	172	FcCacheFileRead (FcFontSet * set, FcStrSet dirs, char cache_file)
f28f090d	173	{
af180c40	174	FILE *file;
f28f090d	175	int fd;
f28f090d	176	char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
af180c40	177	static char name_buf[8192];
c60ec7cc	178	FcChar8 * ls;
04f7d3e7	179	char * buf;
af180c40	180	int i;
f28f090d PL	181
	182	if (!cache_file)
	183	goto bail;
	184
af180c40 KP	185	file = fopen(cache_file, "rb");
af180c40 KP	186	if (file == NULL)
f28f090d PL	187	goto bail;
f28f090d PL	188
af180c40 KP	189	if (!FcDirCacheConsume (file, set, dirs, NULL, name_buf))
	190	goto bail1;
	191
	192	fclose (file);
	193
c60ec7cc	194	printf ("fc-cat: printing directory cache for cache which would be named %s\n",
ea44e218 PL	195	name_buf);
ea44e218 PL	196
c60ec7cc PL	197	return name_buf;
c60ec7cc PL	198
f28f090d	199	bail1:
af180c40	200	fclose (file);
f28f090d	201	bail:
c60ec7cc	202	return 0;
f28f090d PL	203	}
	204
	205	/*
	206	* return the path from the directory containing 'cache' to 'file'
	207	*/
	208
	209	static const FcChar8 *
	210	FcFileBaseName (const char cache, const FcChar8 file)
	211	{
	212	const FcChar8 *cache_slash;
	213
	214	cache_slash = FcStrLastSlash ((const FcChar8 *)cache);
	215	if (cache_slash && !strncmp ((const char ) cache, (const char ) file,
	216	(cache_slash + 1) - (const FcChar8 *)cache))
	217	return file + ((cache_slash + 1) - (const FcChar8 *)cache);
	218	return file;
	219	}
	220
	221	FcBool
c60ec7cc	222	FcCachePrintSet (FcFontSet set, FcStrSet dirs, char *base_name)
f28f090d PL	223	{
	224	FcPattern *font;
	225	FcChar8 name, dir;
	226	const FcChar8 file, base;
d2f45978	227	int ret;
f28f090d PL	228	int n;
f28f090d PL	229	int id;
f28f090d PL	230	FcStrList *list;
	231
	232	list = FcStrListCreate (dirs);
	233	if (!list)
	234	goto bail2;
	235
	236	while ((dir = FcStrListNext (list)))
	237	{
c60ec7cc	238	base = FcFileBaseName (base_name, dir);
f28f090d PL	239	if (!FcCacheWriteStringOld (stdout, base))
	240	goto bail3;
	241	if (PUTC (' ', stdout) == EOF)
	242	goto bail3;
	243	if (!FcCacheWriteInt (stdout, 0))
	244	goto bail3;
	245	if (PUTC (' ', stdout) == EOF)
	246	goto bail3;
	247	if (!FcCacheWriteStringOld (stdout, FC_FONT_FILE_DIR))
	248	goto bail3;
	249	if (PUTC ('\n', stdout) == EOF)
	250	goto bail3;
	251	}
	252
	253	for (n = 0; n < set->nfont; n++)
	254	{
	255	font = set->fonts[n];
	256	if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
	257	goto bail3;
c60ec7cc	258	base = FcFileBaseName (base_name, file);
f28f090d PL	259	if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
	260	goto bail3;
	261	if (FcDebug () & FC_DBG_CACHEV)
	262	printf (" write file \"%s\"\n", base);
	263	if (!FcCacheWriteStringOld (stdout, base))
	264	goto bail3;
	265	if (PUTC (' ', stdout) == EOF)
	266	goto bail3;
	267	if (!FcCacheWriteInt (stdout, id))
	268	goto bail3;
	269	if (PUTC (' ', stdout) == EOF)
	270	goto bail3;
	271	name = FcNameUnparse (font);
	272	if (!name)
	273	goto bail3;
	274	ret = FcCacheWriteStringOld (stdout, name);
	275	FcStrFree (name);
	276	if (!ret)
	277	goto bail3;
	278	if (PUTC ('\n', stdout) == EOF)
	279	goto bail3;
	280	}
	281
	282	FcStrListDone (list);
	283
	284	return FcTrue;
	285
	286	bail3:
	287	FcStrListDone (list);
	288	bail2:
f28f090d PL	289	return FcFalse;
	290	}
	291
	292	int
	293	main (int argc, char **argv)
	294	{
	295	int i;
f28f090d PL	296	#if HAVE_GETOPT_LONG \|\| HAVE_GETOPT
	297	int c;
	298	FcFontSet *fs = FcFontSetCreate();
	299	FcStrSet *dirs = FcStrSetCreate();
c60ec7cc	300	char *name_buf;
9769b43d	301	FcConfig *config;
f28f090d PL	302
	303	#if HAVE_GETOPT_LONG
	304	while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
	305	#else
	306	while ((c = getopt (argc, argv, "fsVv?")) != -1)
	307	#endif
	308	{
	309	switch (c) {
	310	case 'V':
	311	fprintf (stderr, "fontconfig version %d.%d.%d\n",
	312	FC_MAJOR, FC_MINOR, FC_REVISION);
	313	exit (0);
	314	default:
	315	usage (argv[0]);
	316	}
	317	}
	318	i = optind;
	319	#else
	320	i = 1;
	321	#endif
	322
9769b43d PL	323	config = FcInitLoadConfig ();
	324	if (!config)
	325	{
	326	fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
	327	return 1;
	328	}
	329	FcConfigSetCurrent (config);
	330
8f2a8078 PL	331	if (i >= argc)
	332	usage (argv[0]);
	333
12f46c42 PL	334	if (FcFileIsDir ((const FcChar8 *)argv[i]))
	335	{
	336	char * dummy_name = (char )FcStrPlus ((FcChar8 )argv[i],
	337	(FcChar8 *)"/dummy");
af180c40	338	if (!FcDirScanConfig (fs, dirs, 0,
9769b43d	339	(const FcChar8 *)argv[i], FcFalse, config))
12f46c42 PL	340	fprintf (stderr, "couldn't load font dir %s\n", argv[i]);
	341	else
	342	{
	343	/* sorry, we can't tell you where the cache file is. */
	344	FcCachePrintSet (fs, dirs, dummy_name);
	345	FcStrFree ((FcChar8 *)dummy_name);
	346	}
	347	}
	348	else if ((name_buf = FcCacheFileRead (fs, dirs, argv[i])) != 0)
c60ec7cc	349	FcCachePrintSet (fs, dirs, name_buf);
6059daed PL	350	else
6059daed PL	351	{
af180c40	352	printf ("nothing to do\n");
6059daed	353	}
f28f090d PL	354
	355	FcStrSetDestroy (dirs);
	356	FcFontSetDestroy (fs);
	357
	358	return 0;
	359	}