fc-cache/fc-cache.c

   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 <stdio.h>
  27 #include <stdlib.h>
  28 #include <unistd.h>
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <errno.h>
  32 #ifdef HAVE_CONFIG_H
  33 #include <config.h>
  34 #else
  35 #ifdef linux
  36 #define HAVE_GETOPT_LONG 1
  37 #endif
  38 #define HAVE_GETOPT 1
  39 #endif
  40
  41 #ifndef HAVE_GETOPT
  42 #define HAVE_GETOPT 0
  43 #endif
  44 #ifndef HAVE_GETOPT_LONG
  45 #define HAVE_GETOPT_LONG 0
  46 #endif
  47
  48 #if HAVE_GETOPT_LONG
  49 #undef  _GNU_SOURCE
  50 #define _GNU_SOURCE
  51 #include <getopt.h>
  52 const struct option longopts[] = {
  53     {"force", 0, 0, 'f'},
  54     {"system-only", 0, 0, 's'},
  55     {"version", 0, 0, 'V'},
  56     {"verbose", 0, 0, 'v'},
  57     {"help", 0, 0, '?'},
  58     {NULL,0,0,0},
  59 };
  60 #else
  61 #if HAVE_GETOPT
  62 extern char *optarg;
  63 extern int optind, opterr, optopt;
  64 #endif
  65 #endif
  66
  67 static void
  68 usage (char *program)
  69 {
  70 #if HAVE_GETOPT_LONG
  71     fprintf (stderr, "usage: %s [-fsvV?] [--force] [--system-only] [--verbose] [--version] [--help] [dirs]\n",
  72              program);
  73 #else
  74     fprintf (stderr, "usage: %s [-fsvV?] [dirs]\n",
  75              program);
  76 #endif
  77     fprintf (stderr, "Build font information caches in [dirs]\n"
  78              "(all directories in font configuration by default).\n");
  79     fprintf (stderr, "\n");
  80 #if HAVE_GETOPT_LONG
  81     fprintf (stderr, "  -f, --force          scan directories with apparently valid caches\n");
  82     fprintf (stderr, "  -s, --system-only    scan system-wide directories only\n");
  83     fprintf (stderr, "  -v, --verbose        display status information while busy\n");
  84     fprintf (stderr, "  -V, --version        display font config version and exit\n");
  85     fprintf (stderr, "  -?, --help           display this help and exit\n");
  86 #else
  87     fprintf (stderr, "  -f         (force)   scan directories with apparently valid caches\n");
  88     fprintf (stderr, "  -s         (system)  scan system-wide directories only\n");
  89     fprintf (stderr, "  -v         (verbose) display status information while busy\n");
  90     fprintf (stderr, "  -V         (version) display font config version and exit\n");
  91     fprintf (stderr, "  -?         (help)    display this help and exit\n");
  92 #endif
  93     exit (1);
  94 }
  95
  96 static int
  97 nsubdirs (FcStrSet *set)
  98 {
  99     FcStrList   *list;
 100     int         n = 0;
 101
 102     list = FcStrListCreate (set);
 103     if (!list)
 104         return 0;
 105     while (FcStrListNext (list))
 106         n++;
 107     FcStrListDone (list);
 108     return n;
 109 }
 110
 111 static int
 112 scanDirs (FcStrList *list, FcConfig *config, char *program, FcBool force, FcBool verbose)
 113 {
 114     int         ret = 0;
 115     const FcChar8 *dir;
 116     const FcChar8 *dir_orig;
 117     FcFontSet   *set;
 118     FcStrSet    *subdirs;
 119     FcStrList   *sublist;
 120     struct stat statb;
 121
 122     /*
 123      * Now scan all of the directories into separate databases
 124      * and write out the results
 125      */
 126     while ((dir_orig = FcStrListNext (list)))
 127     {
 128         dir = FcConfigNormalizeFontDir (config, dir_orig);
 129
 130         if (verbose)
 131         {
 132             printf ("%s: \"%s\": ", program, dir ? dir : dir_orig);
 133             fflush (stdout);
 134         }
 135
 136         if (!dir)
 137         {
 138             if (verbose)
 139                 printf ("skipping, no such directory\n");
 140             continue;
 141         }
 142
 143
 144         set = FcFontSetCreate ();
 145         if (!set)
 146         {
 147             fprintf (stderr, "Can't create font set\n");
 148             ret++;
 149             continue;
 150         }
 151         subdirs = FcStrSetCreate ();
 152         if (!subdirs)
 153         {
 154             fprintf (stderr, "Can't create directory set\n");
 155             ret++;
 156             FcFontSetDestroy (set);
 157             continue;
 158         }
 159
 160         if (access ((char *) dir, W_OK) < 0)
 161         {
 162             switch (errno) {
 163             case ENOENT:
 164             case ENOTDIR:
 165                 if (verbose)
 166                     printf ("skipping, no such directory\n");
 167                 break;
 168             case EACCES:
 169             case EROFS:
 170                 if (verbose)
 171                     printf ("skipping, no write access\n");
 172                 break;
 173             default:
 174                 fprintf (stderr, "\"%s\": ", dir);
 175                 perror ("");
 176                 ret++;
 177             }
 178             FcFontSetDestroy (set);
 179             FcStrSetDestroy (subdirs);
 180             continue;
 181         }
 182         if (stat ((char *) dir, &statb) == -1)
 183         {
 184             fprintf (stderr, "\"%s\": ", dir);
 185             perror ("");
 186             FcFontSetDestroy (set);
 187             FcStrSetDestroy (subdirs);
 188             ret++;
 189             continue;
 190         }
 191         if (!S_ISDIR (statb.st_mode))
 192         {
 193             fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
 194             FcFontSetDestroy (set);
 195             FcStrSetDestroy (subdirs);
 196             continue;
 197         }
 198         if (!FcDirScanConfig (set, subdirs, 0, FcConfigGetBlanks (config), dir, force, config))
 199         {
 200             fprintf (stderr, "\"%s\": error scanning\n", dir);
 201             FcFontSetDestroy (set);
 202             FcStrSetDestroy (subdirs);
 203             ret++;
 204             continue;
 205         }
 206         if (!force && FcDirCacheValid (dir) && FcDirCacheHasCurrentArch (dir))
 207         {
 208             if (verbose)
 209                 printf ("skipping, %d fonts, %d dirs\n",
 210                         set->nfont, nsubdirs(subdirs));
 211         }
 212         else
 213         {
 214             if (verbose)
 215                 printf ("caching, %d fonts, %d dirs\n",
 216                         set->nfont, nsubdirs (subdirs));
 217
 218             if (!FcDirCacheValid (dir))
 219                 if (!FcDirCacheUnlink (dir, config))
 220                     ret++;
 221
 222             if (!FcDirSave (set, subdirs, dir))
 223             {
 224                 if (!ret)
 225                     fprintf (stderr, "Caches are currently saved to \"%s\"\n", PKGCACHEDIR);
 226                 fprintf (stderr, "Can't save cache for \"%s\"\n", dir);
 227                 ret++;
 228             }
 229         }
 230         FcFontSetDestroy (set);
 231         sublist = FcStrListCreate (subdirs);
 232         FcStrSetDestroy (subdirs);
 233         if (!sublist)
 234         {
 235             fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
 236             ret++;
 237             continue;
 238         }
 239         ret += scanDirs (sublist, config, program, force, verbose);
 240     }
 241     FcStrListDone (list);
 242     return ret;
 243 }
 244
 245 int
 246 main (int argc, char **argv)
 247 {
 248     FcStrSet    *dirs;
 249     FcStrList   *list;
 250     FcBool      verbose = FcFalse;
 251     FcBool      force = FcFalse;
 252     FcBool      systemOnly = FcFalse;
 253     FcConfig    *config;
 254     int         i;
 255     int         ret;
 256 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 257     int         c;
 258
 259 #if HAVE_GETOPT_LONG
 260     while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
 261 #else
 262     while ((c = getopt (argc, argv, "fsVv?")) != -1)
 263 #endif
 264     {
 265         switch (c) {
 266         case 'f':
 267             force = FcTrue;
 268             break;
 269         case 's':
 270             systemOnly = FcTrue;
 271             break;
 272         case 'V':
 273             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 274                      FC_MAJOR, FC_MINOR, FC_REVISION);
 275             exit (0);
 276         case 'v':
 277             verbose = FcTrue;
 278             break;
 279         default:
 280             usage (argv[0]);
 281         }
 282     }
 283     i = optind;
 284 #else
 285     i = 1;
 286 #endif
 287
 288     if (systemOnly)
 289         FcConfigEnableHome (FcFalse);
 290     config = FcInitLoadConfig ();
 291     if (!config)
 292     {
 293         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 294         return 1;
 295     }
 296     FcConfigSetCurrent (config);
 297
 298     if (argv[i])
 299     {
 300         dirs = FcStrSetCreate ();
 301         if (!dirs)
 302         {
 303             fprintf (stderr, "%s: Can't create list of directories\n",
 304                      argv[0]);
 305             return 1;
 306         }
 307         while (argv[i])
 308         {
 309             if (!FcStrSetAdd (dirs, (FcChar8 *) argv[i]))
 310             {
 311                 fprintf (stderr, "%s: Can't add directory\n", argv[0]);
 312                 return 1;
 313             }
 314             i++;
 315         }
 316         list = FcStrListCreate (dirs);
 317         FcStrSetDestroy (dirs);
 318     }
 319     else
 320         list = FcConfigGetConfigDirs (config);
 321     ret = scanDirs (list, config, argv[0], force, verbose);
 322     /*
 323      * Now we need to sleep a second  (or two, to be extra sure), to make
 324      * sure that timestamps for changes after this run of fc-cache are later
 325      * then any timestamps we wrote.  We don't use gettimeofday() because
 326      * sleep(3) can't be interrupted by a signal here -- this isn't in the
 327      * library, and there aren't any signals flying around here.
 328      */
 329     FcConfigDestroy (config);
 330     sleep (2);
 331     if (verbose)
 332         printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded");
 333     return ret;
 334 }