[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 <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 *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, 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, 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>
	30	#include <sys/types.h>
	31	#include <sys/stat.h>
	32	#include <errno.h>
	33	#ifdef HAVE_CONFIG_H
	34	#include <config.h>
	35	#else
	36	#ifdef linux
	37	#define HAVE_GETOPT_LONG 1
	38	#endif
	39	#define HAVE_GETOPT 1
	40	#endif
	41
	42	#ifndef HAVE_GETOPT
	43	#define HAVE_GETOPT 0
	44	#endif
	45	#ifndef HAVE_GETOPT_LONG
	46	#define HAVE_GETOPT_LONG 0
	47	#endif
	48
	49	#if HAVE_GETOPT_LONG
	50	#undef _GNU_SOURCE
	51	#define _GNU_SOURCE
	52	#include <getopt.h>
	53	const struct option longopts[] = {
	54	{"version", 0, 0, 'V'},
	55	{"help", 0, 0, '?'},
	56	{NULL,0,0,0},
	57	};
	58	#else
	59	#if HAVE_GETOPT
	60	extern char *optarg;
	61	extern int optind, opterr, optopt;
	62	#endif
	63	#endif
	64
65	/*
66	* POSIX has broken stdio so that getc must do thread-safe locking,
67	* this is a serious performance problem for applications doing large
68	* amounts of IO with getc (as is done here). If available, use
69	* the getc_unlocked varient instead.
70	*/
71
72	#if defined(getc_unlocked) \|\| defined(_IO_getc_unlocked)
73	#define GETC(f) getc_unlocked(f)
74	#define PUTC(c,f) putc_unlocked(c,f)
75	#else
76	#define GETC(f) getc(f)
77	#define PUTC(c,f) putc(c,f)
78	#endif
79
80	static FcBool
81	FcCacheWriteChars (FILE f, const FcChar8 chars)
82	{
83	FcChar8 c;
84	while ((c = *chars++))
85	{
86	switch (c) {
87	case '"':
88	case '\\':
89	if (PUTC ('\\', f) == EOF)
90	return FcFalse;
91	/* fall through */
92	default:
93	if (PUTC (c, f) == EOF)
94	return FcFalse;
95	}
96	}
97	return FcTrue;
98	}
99
100	static FcBool
101	FcCacheWriteUlong (FILE *f, unsigned long t)
102	{
103	int pow;
104	unsigned long temp, digit;
105
106	temp = t;
107	pow = 1;
108	while (temp >= 10)
109	{
110	temp /= 10;
111	pow *= 10;
112	}
113	temp = t;
114	while (pow)
115	{
116	digit = temp / pow;
117	if (PUTC ((char) digit + '0', f) == EOF)
118	return FcFalse;
119	temp = temp - pow * digit;
120	pow = pow / 10;
121	}
122	return FcTrue;
123	}
124
125	static FcBool
126	FcCacheWriteInt (FILE *f, int i)
127	{
128	return FcCacheWriteUlong (f, (unsigned long) i);
129	}
130
131	static FcBool
132	FcCacheWriteStringOld (FILE f, const FcChar8 string)
133	{
134
135	if (PUTC ('"', f) == EOF)
136	return FcFalse;
137	if (!FcCacheWriteChars (f, string))
138	return FcFalse;
139	if (PUTC ('"', f) == EOF)
140	return FcFalse;
141	return FcTrue;
142	}
143
144	static void
145	usage (char *program)
146	{
147	#if HAVE_GETOPT_LONG
148	fprintf (stderr, "usage: %s [-V?] [--version] [--help] <fonts.cache-2>\n",
149	program);
150	#else
151	fprintf (stderr, "usage: %s [-fsvV?] <fonts.cache-2>\n",
152	program);
153	#endif
154	fprintf (stderr, "Reads font information caches in <fonts.cache-2>\n");
155	fprintf (stderr, "\n");
156	#if HAVE_GETOPT_LONG
157	fprintf (stderr, " -V, --version display font config version and exit\n");
158	fprintf (stderr, " -?, --help display this help and exit\n");
159	#else
160	fprintf (stderr, " -V (version) display font config version and exit\n");
161	fprintf (stderr, " -? (help) display this help and exit\n");
162	#endif
163	exit (1);
164	}
165
166	/* read serialized state from the cache file */
167	static FcBool
168	FcCacheFileRead (FcFontSet * set, FcStrSet dirs, char cache_file)
169	{
170	int fd;
171	char * current_arch_machine_name;
172	char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
173	off_t current_arch_start = 0;
174	char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
175
176	if (!cache_file)
177	goto bail;
178
179	current_arch_machine_name = FcCacheMachineSignature();
180	fd = open(cache_file, O_RDONLY);
181	if (fd == -1)
182	goto bail;
183
184	current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
185	if (current_arch_start < 0)
186	goto bail1;
187
188	lseek (fd, current_arch_start, SEEK_SET);
189	if (FcCacheReadString (fd, candidate_arch_machine_name,
190	sizeof (candidate_arch_machine_name)) == 0)
191	goto bail1;
192
193	while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
194	FcStrSetAdd (dirs, (FcChar8 *)subdirName);
195
196	if (!FcDirCacheConsume (fd, set))
197	goto bail1;
198
199	close(fd);
200	free (cache_file);
201	return FcTrue;
202
203	bail1:
204	close (fd);
205	bail:
206	free (cache_file);
207	return FcFalse;
208	}
209
210	/*
211	* return the path from the directory containing 'cache' to 'file'
212	*/
213
214	static const FcChar8 *
215	FcFileBaseName (const char cache, const FcChar8 file)
216	{
217	const FcChar8 *cache_slash;
218
219	cache_slash = FcStrLastSlash ((const FcChar8 *)cache);
220	if (cache_slash && !strncmp ((const char ) cache, (const char ) file,
221	(cache_slash + 1) - (const FcChar8 *)cache))
222	return file + ((cache_slash + 1) - (const FcChar8 *)cache);
223	return file;
224	}
225
226	FcBool
227	FcCachePrintSet (FcFontSet set, FcStrSet dirs, char *cache_file)
228	{
229	FcPattern *font;
230	FcChar8 name, dir;
231	const FcChar8 file, base;
232	int n;
233	int id;
234	FcBool ret;
235	FcStrList *list;
236
237	list = FcStrListCreate (dirs);
238	if (!list)
239	goto bail2;
240
241	while ((dir = FcStrListNext (list)))
242	{
243	base = FcFileBaseName (cache_file, dir);
244	if (!FcCacheWriteStringOld (stdout, base))
245	goto bail3;
246	if (PUTC (' ', stdout) == EOF)
247	goto bail3;
248	if (!FcCacheWriteInt (stdout, 0))
249	goto bail3;
250	if (PUTC (' ', stdout) == EOF)
251	goto bail3;
252	if (!FcCacheWriteStringOld (stdout, FC_FONT_FILE_DIR))
253	goto bail3;
254	if (PUTC ('\n', stdout) == EOF)
255	goto bail3;
256	}
257
258	for (n = 0; n < set->nfont; n++)
259	{
260	font = set->fonts[n];
261	if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
262	goto bail3;
263	base = FcFileBaseName (cache_file, file);
264	if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
265	goto bail3;
266	if (FcDebug () & FC_DBG_CACHEV)
267	printf (" write file \"%s\"\n", base);
268	if (!FcCacheWriteStringOld (stdout, base))
269	goto bail3;
270	if (PUTC (' ', stdout) == EOF)
271	goto bail3;
272	if (!FcCacheWriteInt (stdout, id))
273	goto bail3;
274	if (PUTC (' ', stdout) == EOF)
275	goto bail3;
276	name = FcNameUnparse (font);
277	if (!name)
278	goto bail3;
279	ret = FcCacheWriteStringOld (stdout, name);
280	FcStrFree (name);
281	if (!ret)
282	goto bail3;
283	if (PUTC ('\n', stdout) == EOF)
284	goto bail3;
285	}
286
287	FcStrListDone (list);
288
289	return FcTrue;
290
291	bail3:
292	FcStrListDone (list);
293	bail2:
294	bail1:
295	bail0:
296	return FcFalse;
297	}
298
299	int
300	main (int argc, char **argv)
301	{
302	int i;
303	int ret;
304	#if HAVE_GETOPT_LONG \|\| HAVE_GETOPT
305	int c;
306	FcFontSet *fs = FcFontSetCreate();
307	FcStrSet *dirs = FcStrSetCreate();
308
309	#if HAVE_GETOPT_LONG
310	while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
311	#else
312	while ((c = getopt (argc, argv, "fsVv?")) != -1)
313	#endif
314	{
315	switch (c) {
316	case 'V':
317	fprintf (stderr, "fontconfig version %d.%d.%d\n",
318	FC_MAJOR, FC_MINOR, FC_REVISION);
319	exit (0);
320	default:
321	usage (argv[0]);
322	}
323	}
324	i = optind;
325	#else
326	i = 1;
327	#endif
328
329	if (FcCacheFileRead (fs, dirs, argv[i]))
330	FcCachePrintSet (fs, dirs, argv[i]);
331
332	FcStrSetDestroy (dirs);
333	FcFontSetDestroy (fs);
334
335	return 0;
336	}