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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); | |
f28f090d PL |
201 | return FcTrue; |
202 | ||
203 | bail1: | |
204 | close (fd); | |
205 | bail: | |
f28f090d PL |
206 | return FcFalse; |
207 | } | |
208 | ||
209 | /* | |
210 | * return the path from the directory containing 'cache' to 'file' | |
211 | */ | |
212 | ||
213 | static const FcChar8 * | |
214 | FcFileBaseName (const char *cache, const FcChar8 *file) | |
215 | { | |
216 | const FcChar8 *cache_slash; | |
217 | ||
218 | cache_slash = FcStrLastSlash ((const FcChar8 *)cache); | |
219 | if (cache_slash && !strncmp ((const char *) cache, (const char *) file, | |
220 | (cache_slash + 1) - (const FcChar8 *)cache)) | |
221 | return file + ((cache_slash + 1) - (const FcChar8 *)cache); | |
222 | return file; | |
223 | } | |
224 | ||
225 | FcBool | |
226 | FcCachePrintSet (FcFontSet *set, FcStrSet *dirs, char *cache_file) | |
227 | { | |
228 | FcPattern *font; | |
229 | FcChar8 *name, *dir; | |
230 | const FcChar8 *file, *base; | |
231 | int n; | |
232 | int id; | |
233 | FcBool ret; | |
234 | FcStrList *list; | |
235 | ||
236 | list = FcStrListCreate (dirs); | |
237 | if (!list) | |
238 | goto bail2; | |
239 | ||
240 | while ((dir = FcStrListNext (list))) | |
241 | { | |
242 | base = FcFileBaseName (cache_file, dir); | |
243 | if (!FcCacheWriteStringOld (stdout, base)) | |
244 | goto bail3; | |
245 | if (PUTC (' ', stdout) == EOF) | |
246 | goto bail3; | |
247 | if (!FcCacheWriteInt (stdout, 0)) | |
248 | goto bail3; | |
249 | if (PUTC (' ', stdout) == EOF) | |
250 | goto bail3; | |
251 | if (!FcCacheWriteStringOld (stdout, FC_FONT_FILE_DIR)) | |
252 | goto bail3; | |
253 | if (PUTC ('\n', stdout) == EOF) | |
254 | goto bail3; | |
255 | } | |
256 | ||
257 | for (n = 0; n < set->nfont; n++) | |
258 | { | |
259 | font = set->fonts[n]; | |
260 | if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch) | |
261 | goto bail3; | |
262 | base = FcFileBaseName (cache_file, file); | |
263 | if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch) | |
264 | goto bail3; | |
265 | if (FcDebug () & FC_DBG_CACHEV) | |
266 | printf (" write file \"%s\"\n", base); | |
267 | if (!FcCacheWriteStringOld (stdout, base)) | |
268 | goto bail3; | |
269 | if (PUTC (' ', stdout) == EOF) | |
270 | goto bail3; | |
271 | if (!FcCacheWriteInt (stdout, id)) | |
272 | goto bail3; | |
273 | if (PUTC (' ', stdout) == EOF) | |
274 | goto bail3; | |
275 | name = FcNameUnparse (font); | |
276 | if (!name) | |
277 | goto bail3; | |
278 | ret = FcCacheWriteStringOld (stdout, name); | |
279 | FcStrFree (name); | |
280 | if (!ret) | |
281 | goto bail3; | |
282 | if (PUTC ('\n', stdout) == EOF) | |
283 | goto bail3; | |
284 | } | |
285 | ||
286 | FcStrListDone (list); | |
287 | ||
288 | return FcTrue; | |
289 | ||
290 | bail3: | |
291 | FcStrListDone (list); | |
292 | bail2: | |
293 | bail1: | |
294 | bail0: | |
295 | return FcFalse; | |
296 | } | |
297 | ||
298 | int | |
299 | main (int argc, char **argv) | |
300 | { | |
301 | int i; | |
302 | int ret; | |
303 | #if HAVE_GETOPT_LONG || HAVE_GETOPT | |
304 | int c; | |
305 | FcFontSet *fs = FcFontSetCreate(); | |
306 | FcStrSet *dirs = FcStrSetCreate(); | |
307 | ||
308 | #if HAVE_GETOPT_LONG | |
309 | while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1) | |
310 | #else | |
311 | while ((c = getopt (argc, argv, "fsVv?")) != -1) | |
312 | #endif | |
313 | { | |
314 | switch (c) { | |
315 | case 'V': | |
316 | fprintf (stderr, "fontconfig version %d.%d.%d\n", | |
317 | FC_MAJOR, FC_MINOR, FC_REVISION); | |
318 | exit (0); | |
319 | default: | |
320 | usage (argv[0]); | |
321 | } | |
322 | } | |
323 | i = optind; | |
324 | #else | |
325 | i = 1; | |
326 | #endif | |
327 | ||
d6946c1a | 328 | if (FcCacheFileRead (fs, dirs, dirname (strdup(argv[i])), argv[i])) |
f28f090d PL |
329 | FcCachePrintSet (fs, dirs, argv[i]); |
330 | ||
331 | FcStrSetDestroy (dirs); | |
332 | FcFontSetDestroy (fs); | |
333 | ||
334 | return 0; | |
335 | } |