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