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 #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 <stdio.h>
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <errno.h>
  41
  42 #if defined (_WIN32)
  43 #define STRICT
  44 #include <windows.h>
  45 #define sleep(x) Sleep((x) * 1000)
  46 #undef STRICT
  47 #endif
  48
  49 #ifndef HAVE_GETOPT
  50 #define HAVE_GETOPT 0
  51 #endif
  52 #ifndef HAVE_GETOPT_LONG
  53 #define HAVE_GETOPT_LONG 0
  54 #endif
  55
  56 #if HAVE_GETOPT_LONG
  57 #undef  _GNU_SOURCE
  58 #define _GNU_SOURCE
  59 #include <getopt.h>
  60 const struct option longopts[] = {
  61     {"force", 0, 0, 'f'},
  62     {"really-force", 0, 0, 'r'},
  63     {"system-only", 0, 0, 's'},
  64     {"version", 0, 0, 'V'},
  65     {"verbose", 0, 0, 'v'},
  66     {"help", 0, 0, '?'},
  67     {NULL,0,0,0},
  68 };
  69 #else
  70 #if HAVE_GETOPT
  71 extern char *optarg;
  72 extern int optind, opterr, optopt;
  73 #endif
  74 #endif
  75
  76 static void
  77 usage (char *program)
  78 {
  79 #if HAVE_GETOPT_LONG
  80     fprintf (stderr, "usage: %s [-frsvV?] [--force|--really-force] [--system-only] [--verbose] [--version] [--help] [dirs]\n",
  81              program);
  82 #else
  83     fprintf (stderr, "usage: %s [-frsvV?] [dirs]\n",
  84              program);
  85 #endif
  86     fprintf (stderr, "Build font information caches in [dirs]\n"
  87              "(all directories in font configuration by default).\n");
  88     fprintf (stderr, "\n");
  89 #if HAVE_GETOPT_LONG
  90     fprintf (stderr, "  -f, --force          scan directories with apparently valid caches\n");
  91     fprintf (stderr, "  -r, --really-force   erase all existing caches, then rescan\n");
  92     fprintf (stderr, "  -s, --system-only    scan system-wide directories only\n");
  93     fprintf (stderr, "  -v, --verbose        display status information while busy\n");
  94     fprintf (stderr, "  -V, --version        display font config version and exit\n");
  95     fprintf (stderr, "  -?, --help           display this help and exit\n");
  96 #else
  97     fprintf (stderr, "  -f         (force)   scan directories with apparently valid caches\n");
  98     fprintf (stderr, "  -r,   (really force) erase all existing caches, then rescan\n");
  99     fprintf (stderr, "  -s         (system)  scan system-wide directories only\n");
 100     fprintf (stderr, "  -v         (verbose) display status information while busy\n");
 101     fprintf (stderr, "  -V         (version) display font config version and exit\n");
 102     fprintf (stderr, "  -?         (help)    display this help and exit\n");
 103 #endif
 104     exit (1);
 105 }
 106
 107 static FcStrSet *processed_dirs;
 108
 109 static int
 110 nsubdirs (FcStrSet *set)
 111 {
 112     FcStrList   *list;
 113     int         n = 0;
 114
 115     list = FcStrListCreate (set);
 116     if (!list)
 117         return 0;
 118     while (FcStrListNext (list))
 119         n++;
 120     FcStrListDone (list);
 121     return n;
 122 }
 123
 124 static int
 125 scanDirs (FcStrList *list, FcConfig *config, char *program, FcBool force, FcBool really_force, FcBool verbose)
 126 {
 127     int         ret = 0;
 128     const FcChar8 *dir;
 129     FcFontSet   *set;
 130     FcStrSet    *subdirs;
 131     FcStrList   *sublist;
 132     struct stat statb;
 133     FcBool      was_valid;
 134
 135     /*
 136      * Now scan all of the directories into separate databases
 137      * and write out the results
 138      */
 139     while ((dir = FcStrListNext (list)))
 140     {
 141         if (verbose)
 142         {
 143             printf ("%s: \"%s\": ", program, dir);
 144             fflush (stdout);
 145         }
 146
 147         if (!dir)
 148         {
 149             if (verbose)
 150                 printf ("skipping, no such directory\n");
 151             continue;
 152         }
 153
 154         if (FcStrSetMember (processed_dirs, dir))
 155         {
 156             if (verbose)
 157                 printf ("skipping, looped directory detected\n");
 158             continue;
 159         }
 160
 161         set = FcFontSetCreate ();
 162         if (!set)
 163         {
 164             fprintf (stderr, "%s: Can't create font set\n", dir);
 165             ret++;
 166             continue;
 167         }
 168         subdirs = FcStrSetCreate ();
 169         if (!subdirs)
 170         {
 171             fprintf (stderr, "%s: Can't create directory set\n", dir);
 172             ret++;
 173             FcFontSetDestroy (set);
 174             continue;
 175         }
 176
 177         if (access ((char *) dir, W_OK) < 0)
 178         {
 179             switch (errno) {
 180             case ENOENT:
 181             case ENOTDIR:
 182                 if (verbose)
 183                     printf ("skipping, no such directory\n");
 184                 FcFontSetDestroy (set);
 185                 FcStrSetDestroy (subdirs);
 186                 continue;
 187             case EACCES:
 188             case EROFS:
 189                 /* That's ok, caches go to /var anyway. */
 190                 /* Ideally we'd do an access on the hashed_name. */
 191                 /* But we hid that behind an abstraction barrier. */
 192                 break;
 193             default:
 194                 fprintf (stderr, "\"%s\": ", dir);
 195                 perror ("");
 196                 ret++;
 197
 198                 FcFontSetDestroy (set);
 199                 FcStrSetDestroy (subdirs);
 200                 continue;
 201             }
 202         }
 203         if (stat ((char *) dir, &statb) == -1)
 204         {
 205             fprintf (stderr, "\"%s\": ", dir);
 206             perror ("");
 207             FcFontSetDestroy (set);
 208             FcStrSetDestroy (subdirs);
 209             ret++;
 210             continue;
 211         }
 212         if (!S_ISDIR (statb.st_mode))
 213         {
 214             fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
 215             FcFontSetDestroy (set);
 216             FcStrSetDestroy (subdirs);
 217             continue;
 218         }
 219
 220         if (really_force)
 221             FcDirCacheUnlink (dir, config);
 222
 223         if (!force)
 224             was_valid = FcDirCacheValid (dir, config);
 225
 226         if (!FcDirScanConfig (set, subdirs, FcConfigGetBlanks (config), dir, force, config))
 227         {
 228             fprintf (stderr, "%s: error scanning\n", dir);
 229             FcFontSetDestroy (set);
 230             FcStrSetDestroy (subdirs);
 231             ret++;
 232             continue;
 233         }
 234         if (!force && was_valid)
 235         {
 236             if (verbose)
 237                 printf ("skipping, %d fonts, %d dirs\n",
 238                         set->nfont, nsubdirs(subdirs));
 239         }
 240         else
 241         {
 242             if (verbose)
 243                 printf ("caching, %d fonts, %d dirs\n",
 244                         set->nfont, nsubdirs (subdirs));
 245
 246             if (!FcDirCacheValid (dir, config))
 247             {
 248                 fprintf (stderr, "%s: failed to write cache\n", dir);
 249                 (void) FcDirCacheUnlink (dir, config);
 250                 ret++;
 251             }
 252         }
 253         FcFontSetDestroy (set);
 254         sublist = FcStrListCreate (subdirs);
 255         FcStrSetDestroy (subdirs);
 256         if (!sublist)
 257         {
 258             fprintf (stderr, "%s: Can't create subdir list\n", dir);
 259             ret++;
 260             continue;
 261         }
 262         FcStrSetAdd (processed_dirs, dir);
 263         ret += scanDirs (sublist, config, program, force, really_force, verbose);
 264     }
 265     FcStrListDone (list);
 266     return ret;
 267 }
 268
 269 int
 270 main (int argc, char **argv)
 271 {
 272     FcStrSet    *dirs;
 273     FcStrList   *list;
 274     FcBool      verbose = FcFalse;
 275     FcBool      force = FcFalse;
 276     FcBool      really_force = FcFalse;
 277     FcBool      systemOnly = FcFalse;
 278     FcConfig    *config;
 279     int         i;
 280     int         ret;
 281 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 282     int         c;
 283
 284 #if HAVE_GETOPT_LONG
 285     while ((c = getopt_long (argc, argv, "frsVv?", longopts, NULL)) != -1)
 286 #else
 287     while ((c = getopt (argc, argv, "frsVv?")) != -1)
 288 #endif
 289     {
 290         switch (c) {
 291         case 'r':
 292             really_force = FcTrue;
 293             /* fall through */
 294         case 'f':
 295             force = FcTrue;
 296             break;
 297         case 's':
 298             systemOnly = FcTrue;
 299             break;
 300         case 'V':
 301             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 302                      FC_MAJOR, FC_MINOR, FC_REVISION);
 303             exit (0);
 304         case 'v':
 305             verbose = FcTrue;
 306             break;
 307         default:
 308             usage (argv[0]);
 309         }
 310     }
 311     i = optind;
 312 #else
 313     i = 1;
 314 #endif
 315
 316     if (systemOnly)
 317         FcConfigEnableHome (FcFalse);
 318     config = FcInitLoadConfig ();
 319     if (!config)
 320     {
 321         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 322         return 1;
 323     }
 324     FcConfigSetCurrent (config);
 325
 326     if (argv[i])
 327     {
 328         dirs = FcStrSetCreate ();
 329         if (!dirs)
 330         {
 331             fprintf (stderr, "%s: Can't create list of directories\n",
 332                      argv[0]);
 333             return 1;
 334         }
 335         while (argv[i])
 336         {
 337             if (!FcStrSetAdd (dirs, (FcChar8 *) argv[i]))
 338             {
 339                 fprintf (stderr, "%s: Can't add directory\n", argv[0]);
 340                 return 1;
 341             }
 342             i++;
 343         }
 344         list = FcStrListCreate (dirs);
 345         FcStrSetDestroy (dirs);
 346     }
 347     else
 348         list = FcConfigGetConfigDirs (config);
 349
 350     if ((processed_dirs = FcStrSetCreate()) == NULL) {
 351         fprintf(stderr, "Cannot malloc\n");
 352         return 1;
 353     }
 354
 355     ret = scanDirs (list, config, argv[0], force, really_force, verbose);
 356
 357     FcStrSetDestroy (processed_dirs);
 358
 359     /*
 360      * Now we need to sleep a second  (or two, to be extra sure), to make
 361      * sure that timestamps for changes after this run of fc-cache are later
 362      * then any timestamps we wrote.  We don't use gettimeofday() because
 363      * sleep(3) can't be interrupted by a signal here -- this isn't in the
 364      * library, and there aren't any signals flying around here.
 365      */
 366     FcConfigDestroy (config);
 367     sleep (2);
 368     if (verbose)
 369         printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded");
 370     return ret;
 371 }