fc-cat.c revision ca08ab68 
1/*
2 * fontconfig/fc-cat/fc-cat.c
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 the author(s) not be used in
11 * advertising or publicity pertaining to distribution of the software without
12 * specific, written prior permission.  The authors make 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 * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
18 * EVENT SHALL THE AUTHOR(S) 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#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
34#include <fontconfig/fontconfig.h>
35#include "../src/fcarch.h"
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <unistd.h>
40#include <sys/types.h>
41#include <sys/stat.h>
42#include <errno.h>
43
44#ifndef HAVE_GETOPT
45#define HAVE_GETOPT 0
46#endif
47#ifndef HAVE_GETOPT_LONG
48#define HAVE_GETOPT_LONG 0
49#endif
50
51#if HAVE_GETOPT_LONG
52#undef  _GNU_SOURCE
53#define _GNU_SOURCE
54#include <getopt.h>
55const struct option longopts[] = {
56    {"version", 0, 0, 'V'},
57    {"verbose", 0, 0, 'v'},
58    {"recurse", 0, 0, 'r'},
59    {"help", 0, 0, 'h'},
60    {NULL,0,0,0},
61};
62#else
63#if HAVE_GETOPT
64extern char *optarg;
65extern int optind, opterr, optopt;
66#endif
67#endif
68
69/*
70 * POSIX has broken stdio so that getc must do thread-safe locking,
71 * this is a serious performance problem for applications doing large
72 * amounts of IO with getc (as is done here).  If available, use
73 * the getc_unlocked varient instead.
74 */
75
76#if defined(getc_unlocked) || defined(_IO_getc_unlocked)
77#define GETC(f) getc_unlocked(f)
78#define PUTC(c,f) putc_unlocked(c,f)
79#else
80#define GETC(f) getc(f)
81#define PUTC(c,f) putc(c,f)
82#endif
83
84static FcBool
85write_chars (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
104static FcBool
105write_ulong (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
129static FcBool
130write_int (FILE *f, int i)
131{
132    return write_ulong (f, (unsigned long) i);
133}
134
135static FcBool
136write_string (FILE *f, const FcChar8 *string)
137{
138
139    if (PUTC ('"', f) == EOF)
140	return FcFalse;
141    if (!write_chars (f, string))
142	return FcFalse;
143    if (PUTC ('"', f) == EOF)
144	return FcFalse;
145    return FcTrue;
146}
147
148static void
149usage (char *program, int error)
150{
151    FILE *file = error ? stderr : stdout;
152#if HAVE_GETOPT_LONG
153    fprintf (file, "usage: %s [-rv] [--recurse] [--verbose] [*-%s" FC_CACHE_SUFFIX "|directory]...\n",
154	     program, FC_ARCHITECTURE);
155    fprintf (file, "       %s [-Vh] [--version] [--help]\n", program);
156#else
157    fprintf (file, "usage: %s [-rvVh] [*-%s" FC_CACHE_SUFFIX "|directory]...\n",
158	     program, FC_ARCHITECTURE);
159#endif
160    fprintf (file, "Reads font information cache from:\n");
161    fprintf (file, " 1) specified fontconfig cache file\n");
162    fprintf (file, " 2) related to a particular font directory\n");
163    fprintf (file, "\n");
164#if HAVE_GETOPT_LONG
165    fprintf (file, "  -r, --recurse        recurse into subdirectories\n");
166    fprintf (file, "  -v, --verbose        be verbose\n");
167    fprintf (file, "  -V, --version        display font config version and exit\n");
168    fprintf (file, "  -h, --help           display this help and exit\n");
169#else
170    fprintf (file, "  -r         (recurse) recurse into subdirectories\n");
171    fprintf (file, "  -v         (verbose) be verbose\n");
172    fprintf (file, "  -V         (version) display font config version and exit\n");
173    fprintf (file, "  -h         (help)    display this help and exit\n");
174#endif
175    exit (error);
176}
177
178/*
179 * return the path from the directory containing 'cache' to 'file'
180 */
181
182static const FcChar8 *
183file_base_name (const FcChar8 *cache, const FcChar8 *file)
184{
185    int		    cache_len = strlen ((char *) cache);
186
187    if (!strncmp ((char *) cache, (char *) file, cache_len) && file[cache_len] == '/')
188	return file + cache_len + 1;
189    return file;
190}
191
192#define FC_FONT_FILE_DIR	((FcChar8 *) ".dir")
193
194static FcBool
195cache_print_set (FcFontSet *set, FcStrSet *dirs, const FcChar8 *base_name, FcBool verbose)
196{
197    FcChar8	    *dir;
198    const FcChar8   *base;
199    int		    n;
200    int		    ndir = 0;
201    FcStrList	    *list;
202
203    list = FcStrListCreate (dirs);
204    if (!list)
205	goto bail2;
206
207    while ((dir = FcStrListNext (list)))
208    {
209	base = file_base_name (base_name, dir);
210	if (!write_string (stdout, base))
211	    goto bail3;
212	if (PUTC (' ', stdout) == EOF)
213	    goto bail3;
214	if (!write_int (stdout, 0))
215	    goto bail3;
216        if (PUTC (' ', stdout) == EOF)
217	    goto bail3;
218	if (!write_string (stdout, FC_FONT_FILE_DIR))
219	    goto bail3;
220	if (PUTC ('\n', stdout) == EOF)
221	    goto bail3;
222	ndir++;
223    }
224
225    for (n = 0; n < set->nfont; n++)
226    {
227	FcPattern   *font = set->fonts[n];
228	FcChar8 *s;
229
230	s = FcPatternFormat (font, (const FcChar8 *) "%{=fccat}\n");
231	if (s)
232	{
233	    printf ("%s", s);
234	    FcStrFree (s);
235	}
236    }
237    if (verbose && !set->nfont && !ndir)
238	printf ("<empty>\n");
239
240    FcStrListDone (list);
241
242    return FcTrue;
243
244bail3:
245    FcStrListDone (list);
246bail2:
247    return FcFalse;
248}
249
250int
251main (int argc, char **argv)
252{
253    int		i;
254    int		ret = 0;
255    FcFontSet	*fs;
256    FcStrSet    *dirs;
257    FcStrSet	*args = NULL;
258    FcStrList	*arglist;
259    FcCache	*cache;
260    FcConfig	*config;
261    FcChar8	*arg;
262    int		verbose = 0;
263    int		recurse = 0;
264    FcBool	first = FcTrue;
265#if HAVE_GETOPT_LONG || HAVE_GETOPT
266    int		c;
267
268#if HAVE_GETOPT_LONG
269    while ((c = getopt_long (argc, argv, "Vvrh", longopts, NULL)) != -1)
270#else
271    while ((c = getopt (argc, argv, "Vvrh")) != -1)
272#endif
273    {
274	switch (c) {
275	case 'V':
276	    fprintf (stderr, "fontconfig version %d.%d.%d\n",
277		     FC_MAJOR, FC_MINOR, FC_REVISION);
278	    exit (0);
279	case 'v':
280	    verbose++;
281	    break;
282	case 'r':
283	    recurse++;
284	    break;
285	case 'h':
286	    usage (argv[0], 0);
287	default:
288	    usage (argv[0], 1);
289	}
290    }
291    i = optind;
292#else
293    i = 1;
294#endif
295
296    config = FcInitLoadConfig ();
297    if (!config)
298    {
299	fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
300	return 1;
301    }
302    FcConfigSetCurrent (config);
303
304    args = FcStrSetCreate ();
305    if (!args)
306    {
307	fprintf (stderr, "%s: malloc failure\n", argv[0]);
308	return 1;
309    }
310    if (i < argc)
311    {
312	for (; i < argc; i++)
313	{
314	    if (!FcStrSetAddFilename (args, (const FcChar8 *) argv[i]))
315	    {
316		fprintf (stderr, "%s: malloc failure\n", argv[0]);
317		return 1;
318	    }
319	}
320	arglist = FcStrListCreate (args);
321	if (!arglist)
322	{
323	    fprintf (stderr, "%s: malloc failure\n", argv[0]);
324	    return 1;
325	}
326    }
327    else
328    {
329	recurse++;
330	arglist = FcConfigGetFontDirs (config);
331	while ((arg = FcStrListNext (arglist)))
332	    if (!FcStrSetAdd (args, arg))
333	    {
334		fprintf (stderr, "%s: malloc failure\n", argv[0]);
335		return 1;
336	    }
337	FcStrListDone (arglist);
338    }
339    arglist = FcStrListCreate (args);
340    if (!arglist)
341    {
342	fprintf (stderr, "%s: malloc failure\n", argv[0]);
343	return 1;
344    }
345
346    while ((arg = FcStrListNext (arglist)))
347    {
348	int	    j;
349	FcChar8	    *cache_file = NULL;
350	struct stat file_stat;
351
352	if (FcFileIsDir (arg))
353	    cache = FcDirCacheLoad (arg, config, &cache_file);
354	else
355	    cache = FcDirCacheLoadFile (arg, &file_stat);
356	if (!cache)
357	{
358	    perror ((char *) arg);
359	    ret++;
360	    continue;
361	}
362
363	dirs = FcStrSetCreate ();
364	fs = FcCacheCopySet (cache);
365	for (j = 0; j < FcCacheNumSubdir (cache); j++)
366	{
367	    FcStrSetAdd (dirs, FcCacheSubdir (cache, j));
368	    if (recurse)
369		FcStrSetAdd (args, FcCacheSubdir (cache, j));
370	}
371
372	if (verbose)
373	{
374	    if (!first)
375		printf ("\n");
376	    printf ("Directory: %s\nCache: %s\n--------\n",
377		    FcCacheDir(cache), cache_file ? cache_file : arg);
378	    first = FcFalse;
379	}
380        cache_print_set (fs, dirs, FcCacheDir (cache), verbose);
381
382	FcStrSetDestroy (dirs);
383
384	FcFontSetDestroy (fs);
385	FcDirCacheUnload (cache);
386	if (cache_file)
387	    FcStrFree (cache_file);
388    }
389
390    FcFini ();
391    return 0;
392}
393