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1 | /* | |
2 | * fontconfig/fc-cache/fc-cache.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 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 "../fc-arch/fcarch.h" | |
26 | ||
27 | #ifdef HAVE_CONFIG_H | |
28 | #include <config.h> | |
29 | #else | |
30 | #ifdef linux | |
31 | #define HAVE_GETOPT_LONG 1 | |
32 | #endif | |
33 | #define HAVE_GETOPT 1 | |
34 | #endif | |
35 | ||
36 | #include <fontconfig/fontconfig.h> | |
37 | #include <stdio.h> | |
38 | #include <stdlib.h> | |
39 | #include <unistd.h> | |
40 | #include <sys/types.h> | |
41 | #include <sys/stat.h> | |
42 | #include <errno.h> | |
43 | #include <fcntl.h> | |
44 | #include <dirent.h> | |
45 | #include <string.h> | |
46 | ||
47 | #if defined (_WIN32) | |
48 | #define STRICT | |
49 | #include <windows.h> | |
50 | #define sleep(x) Sleep((x) * 1000) | |
51 | #undef STRICT | |
52 | #endif | |
53 | ||
54 | #ifndef O_BINARY | |
55 | #define O_BINARY 0 | |
56 | #endif | |
57 | ||
58 | #ifndef HAVE_GETOPT | |
59 | #define HAVE_GETOPT 0 | |
60 | #endif | |
61 | #ifndef HAVE_GETOPT_LONG | |
62 | #define HAVE_GETOPT_LONG 0 | |
63 | #endif | |
64 | ||
65 | #if HAVE_GETOPT_LONG | |
66 | #undef _GNU_SOURCE | |
67 | #define _GNU_SOURCE | |
68 | #include <getopt.h> | |
69 | const struct option longopts[] = { | |
70 | {"force", 0, 0, 'f'}, | |
71 | {"really-force", 0, 0, 'r'}, | |
72 | {"system-only", 0, 0, 's'}, | |
73 | {"version", 0, 0, 'V'}, | |
74 | {"verbose", 0, 0, 'v'}, | |
75 | {"help", 0, 0, 'h'}, | |
76 | {NULL,0,0,0}, | |
77 | }; | |
78 | #else | |
79 | #if HAVE_GETOPT | |
80 | extern char *optarg; | |
81 | extern int optind, opterr, optopt; | |
82 | #endif | |
83 | #endif | |
84 | ||
85 | static void | |
86 | usage (char *program, int error) | |
87 | { | |
88 | FILE *file = error ? stderr : stdout; | |
89 | #if HAVE_GETOPT_LONG | |
90 | fprintf (file, "usage: %s [-frsvVh] [--force|--really-force] [--system-only] [--verbose] [--version] [--help] [dirs]\n", | |
91 | program); | |
92 | #else | |
93 | fprintf (file, "usage: %s [-frsvVh] [dirs]\n", | |
94 | program); | |
95 | #endif | |
96 | fprintf (file, "Build font information caches in [dirs]\n" | |
97 | "(all directories in font configuration by default).\n"); | |
98 | fprintf (file, "\n"); | |
99 | #if HAVE_GETOPT_LONG | |
100 | fprintf (file, " -f, --force scan directories with apparently valid caches\n"); | |
101 | fprintf (file, " -r, --really-force erase all existing caches, then rescan\n"); | |
102 | fprintf (file, " -s, --system-only scan system-wide directories only\n"); | |
103 | fprintf (file, " -v, --verbose display status information while busy\n"); | |
104 | fprintf (file, " -V, --version display font config version and exit\n"); | |
105 | fprintf (file, " -h, --help display this help and exit\n"); | |
106 | #else | |
107 | fprintf (file, " -f (force) scan directories with apparently valid caches\n"); | |
108 | fprintf (file, " -r, (really force) erase all existing caches, then rescan\n"); | |
109 | fprintf (file, " -s (system) scan system-wide directories only\n"); | |
110 | fprintf (file, " -v (verbose) display status information while busy\n"); | |
111 | fprintf (file, " -V (version) display font config version and exit\n"); | |
112 | fprintf (file, " -h (help) display this help and exit\n"); | |
113 | #endif | |
114 | exit (error); | |
115 | } | |
116 | ||
117 | static FcStrSet *processed_dirs; | |
118 | ||
119 | static int | |
120 | scanDirs (FcStrList *list, FcConfig *config, FcBool force, FcBool really_force, FcBool verbose) | |
121 | { | |
122 | int ret = 0; | |
123 | const FcChar8 *dir; | |
124 | FcStrSet *subdirs; | |
125 | FcStrList *sublist; | |
126 | FcCache *cache; | |
127 | struct stat statb; | |
128 | FcBool was_valid; | |
129 | int i; | |
130 | ||
131 | /* | |
132 | * Now scan all of the directories into separate databases | |
133 | * and write out the results | |
134 | */ | |
135 | while ((dir = FcStrListNext (list))) | |
136 | { | |
137 | if (verbose) | |
138 | { | |
139 | printf ("%s: ", dir); | |
140 | fflush (stdout); | |
141 | } | |
142 | ||
143 | if (!dir) | |
144 | { | |
145 | if (verbose) | |
146 | printf ("skipping, no such directory\n"); | |
147 | continue; | |
148 | } | |
149 | ||
150 | if (FcStrSetMember (processed_dirs, dir)) | |
151 | { | |
152 | if (verbose) | |
153 | printf ("skipping, looped directory detected\n"); | |
154 | continue; | |
155 | } | |
156 | ||
157 | if (stat ((char *) dir, &statb) == -1) | |
158 | { | |
159 | switch (errno) { | |
160 | case ENOENT: | |
161 | case ENOTDIR: | |
162 | if (verbose) | |
163 | printf ("skipping, no such directory\n"); | |
164 | break; | |
165 | default: | |
166 | fprintf (stderr, "\"%s\": ", dir); | |
167 | perror (""); | |
168 | ret++; | |
169 | break; | |
170 | } | |
171 | continue; | |
172 | } | |
173 | ||
174 | if (!S_ISDIR (statb.st_mode)) | |
175 | { | |
176 | fprintf (stderr, "\"%s\": not a directory, skipping\n", dir); | |
177 | continue; | |
178 | } | |
179 | ||
180 | if (really_force) | |
181 | FcDirCacheUnlink (dir, config); | |
182 | ||
183 | cache = NULL; | |
184 | was_valid = FcFalse; | |
185 | if (!force) { | |
186 | cache = FcDirCacheLoad (dir, config, NULL); | |
187 | if (cache) | |
188 | was_valid = FcTrue; | |
189 | } | |
190 | ||
191 | if (!cache) | |
192 | { | |
193 | cache = FcDirCacheRead (dir, FcTrue, config); | |
194 | if (!cache) | |
195 | { | |
196 | fprintf (stderr, "%s: error scanning\n", dir); | |
197 | ret++; | |
198 | continue; | |
199 | } | |
200 | } | |
201 | ||
202 | if (was_valid) | |
203 | { | |
204 | if (verbose) | |
205 | printf ("skipping, existing cache is valid: %d fonts, %d dirs\n", | |
206 | FcCacheNumFont (cache), FcCacheNumSubdir (cache)); | |
207 | } | |
208 | else | |
209 | { | |
210 | if (verbose) | |
211 | printf ("caching, new cache contents: %d fonts, %d dirs\n", | |
212 | FcCacheNumFont (cache), FcCacheNumSubdir (cache)); | |
213 | ||
214 | if (!FcDirCacheValid (dir)) | |
215 | { | |
216 | fprintf (stderr, "%s: failed to write cache\n", dir); | |
217 | (void) FcDirCacheUnlink (dir, config); | |
218 | ret++; | |
219 | } | |
220 | } | |
221 | ||
222 | subdirs = FcStrSetCreate (); | |
223 | if (!subdirs) | |
224 | { | |
225 | fprintf (stderr, "%s: Can't create subdir set\n", dir); | |
226 | ret++; | |
227 | FcDirCacheUnload (cache); | |
228 | continue; | |
229 | } | |
230 | for (i = 0; i < FcCacheNumSubdir (cache); i++) | |
231 | FcStrSetAdd (subdirs, FcCacheSubdir (cache, i)); | |
232 | ||
233 | FcDirCacheUnload (cache); | |
234 | ||
235 | sublist = FcStrListCreate (subdirs); | |
236 | FcStrSetDestroy (subdirs); | |
237 | if (!sublist) | |
238 | { | |
239 | fprintf (stderr, "%s: Can't create subdir list\n", dir); | |
240 | ret++; | |
241 | continue; | |
242 | } | |
243 | FcStrSetAdd (processed_dirs, dir); | |
244 | ret += scanDirs (sublist, config, force, really_force, verbose); | |
245 | } | |
246 | FcStrListDone (list); | |
247 | return ret; | |
248 | } | |
249 | ||
250 | static FcBool | |
251 | cleanCacheDirectory (FcConfig *config, FcChar8 *dir, FcBool verbose) | |
252 | { | |
253 | DIR *d; | |
254 | struct dirent *ent; | |
255 | FcChar8 *dir_base; | |
256 | FcBool ret = FcTrue; | |
257 | FcBool remove; | |
258 | FcCache *cache; | |
259 | struct stat target_stat; | |
260 | ||
261 | dir_base = FcStrPlus (dir, (FcChar8 *) "/"); | |
262 | if (!dir_base) | |
263 | { | |
264 | fprintf (stderr, "%s: out of memory\n", dir); | |
265 | return FcFalse; | |
266 | } | |
267 | if (access ((char *) dir, W_OK) != 0) | |
268 | { | |
269 | if (verbose) | |
270 | printf ("%s: not cleaning %s cache directory\n", dir, | |
271 | access ((char *) dir, F_OK) == 0 ? "unwritable" : "non-existent"); | |
272 | FcStrFree (dir_base); | |
273 | return FcTrue; | |
274 | } | |
275 | if (verbose) | |
276 | printf ("%s: cleaning cache directory\n", dir); | |
277 | d = opendir ((char *) dir); | |
278 | if (!d) | |
279 | { | |
280 | perror ((char *) dir); | |
281 | FcStrFree (dir_base); | |
282 | return FcFalse; | |
283 | } | |
284 | while ((ent = readdir (d))) | |
285 | { | |
286 | FcChar8 *file_name; | |
287 | const FcChar8 *target_dir; | |
288 | ||
289 | if (ent->d_name[0] == '.') | |
290 | continue; | |
291 | /* skip cache files for different architectures and */ | |
292 | /* files which are not cache files at all */ | |
293 | if (strlen(ent->d_name) != 32 + strlen ("-" FC_ARCHITECTURE FC_CACHE_SUFFIX) || | |
294 | strcmp(ent->d_name + 32, "-" FC_ARCHITECTURE FC_CACHE_SUFFIX)) | |
295 | continue; | |
296 | ||
297 | file_name = FcStrPlus (dir_base, (FcChar8 *) ent->d_name); | |
298 | if (!file_name) | |
299 | { | |
300 | fprintf (stderr, "%s: allocation failure\n", dir); | |
301 | ret = FcFalse; | |
302 | break; | |
303 | } | |
304 | remove = FcFalse; | |
305 | cache = FcDirCacheLoadFile (file_name, NULL); | |
306 | if (!cache) | |
307 | { | |
308 | if (verbose) | |
309 | printf ("%s: invalid cache file: %s\n", dir, ent->d_name); | |
310 | remove = FcTrue; | |
311 | } | |
312 | else | |
313 | { | |
314 | target_dir = FcCacheDir (cache); | |
315 | if (stat ((char *) target_dir, &target_stat) < 0) | |
316 | { | |
317 | if (verbose) | |
318 | printf ("%s: %s: missing directory: %s \n", | |
319 | dir, ent->d_name, target_dir); | |
320 | remove = FcTrue; | |
321 | } | |
322 | } | |
323 | if (remove) | |
324 | { | |
325 | if (unlink ((char *) file_name) < 0) | |
326 | { | |
327 | perror ((char *) file_name); | |
328 | ret = FcFalse; | |
329 | } | |
330 | } | |
331 | FcDirCacheUnload (cache); | |
332 | FcStrFree (file_name); | |
333 | } | |
334 | ||
335 | closedir (d); | |
336 | FcStrFree (dir_base); | |
337 | return ret; | |
338 | } | |
339 | ||
340 | static FcBool | |
341 | cleanCacheDirectories (FcConfig *config, FcBool verbose) | |
342 | { | |
343 | FcStrList *cache_dirs = FcConfigGetCacheDirs (config); | |
344 | FcChar8 *cache_dir; | |
345 | FcBool ret = FcTrue; | |
346 | ||
347 | if (!cache_dirs) | |
348 | return FcFalse; | |
349 | while ((cache_dir = FcStrListNext (cache_dirs))) | |
350 | { | |
351 | if (!cleanCacheDirectory (config, cache_dir, verbose)) | |
352 | { | |
353 | ret = FcFalse; | |
354 | break; | |
355 | } | |
356 | } | |
357 | FcStrListDone (cache_dirs); | |
358 | return ret; | |
359 | } | |
360 | ||
361 | int | |
362 | main (int argc, char **argv) | |
363 | { | |
364 | FcStrSet *dirs; | |
365 | FcStrList *list; | |
366 | FcBool verbose = FcFalse; | |
367 | FcBool force = FcFalse; | |
368 | FcBool really_force = FcFalse; | |
369 | FcBool systemOnly = FcFalse; | |
370 | FcConfig *config; | |
371 | int i; | |
372 | int ret; | |
373 | #if HAVE_GETOPT_LONG || HAVE_GETOPT | |
374 | int c; | |
375 | ||
376 | #if HAVE_GETOPT_LONG | |
377 | while ((c = getopt_long (argc, argv, "frsVvh", longopts, NULL)) != -1) | |
378 | #else | |
379 | while ((c = getopt (argc, argv, "frsVvh")) != -1) | |
380 | #endif | |
381 | { | |
382 | switch (c) { | |
383 | case 'r': | |
384 | really_force = FcTrue; | |
385 | /* fall through */ | |
386 | case 'f': | |
387 | force = FcTrue; | |
388 | break; | |
389 | case 's': | |
390 | systemOnly = FcTrue; | |
391 | break; | |
392 | case 'V': | |
393 | fprintf (stderr, "fontconfig version %d.%d.%d\n", | |
394 | FC_MAJOR, FC_MINOR, FC_REVISION); | |
395 | exit (0); | |
396 | case 'v': | |
397 | verbose = FcTrue; | |
398 | break; | |
399 | case 'h': | |
400 | usage (argv[0], 0); | |
401 | default: | |
402 | usage (argv[0], 1); | |
403 | } | |
404 | } | |
405 | i = optind; | |
406 | #else | |
407 | i = 1; | |
408 | #endif | |
409 | ||
410 | if (systemOnly) | |
411 | FcConfigEnableHome (FcFalse); | |
412 | config = FcInitLoadConfig (); | |
413 | if (!config) | |
414 | { | |
415 | fprintf (stderr, "%s: Can't init font config library\n", argv[0]); | |
416 | return 1; | |
417 | } | |
418 | FcConfigSetCurrent (config); | |
419 | ||
420 | if (argv[i]) | |
421 | { | |
422 | dirs = FcStrSetCreate (); | |
423 | if (!dirs) | |
424 | { | |
425 | fprintf (stderr, "%s: Can't create list of directories\n", | |
426 | argv[0]); | |
427 | return 1; | |
428 | } | |
429 | while (argv[i]) | |
430 | { | |
431 | if (!FcStrSetAddFilename (dirs, (FcChar8 *) argv[i])) | |
432 | { | |
433 | fprintf (stderr, "%s: Can't add directory\n", argv[0]); | |
434 | return 1; | |
435 | } | |
436 | i++; | |
437 | } | |
438 | list = FcStrListCreate (dirs); | |
439 | FcStrSetDestroy (dirs); | |
440 | } | |
441 | else | |
442 | list = FcConfigGetConfigDirs (config); | |
443 | ||
444 | if ((processed_dirs = FcStrSetCreate()) == NULL) { | |
445 | fprintf(stderr, "Cannot malloc\n"); | |
446 | return 1; | |
447 | } | |
448 | ||
449 | ret = scanDirs (list, config, force, really_force, verbose); | |
450 | ||
451 | FcStrSetDestroy (processed_dirs); | |
452 | ||
453 | cleanCacheDirectories (config, verbose); | |
454 | ||
455 | /* | |
456 | * Now we need to sleep a second (or two, to be extra sure), to make | |
457 | * sure that timestamps for changes after this run of fc-cache are later | |
458 | * then any timestamps we wrote. We don't use gettimeofday() because | |
459 | * sleep(3) can't be interrupted by a signal here -- this isn't in the | |
460 | * library, and there aren't any signals flying around here. | |
461 | */ | |
462 | FcConfigDestroy (config); | |
463 | FcFini (); | |
464 | sleep (2); | |
465 | if (verbose) | |
466 | printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded"); | |
467 | return ret; | |
468 | } |