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     const FcChar8 *dir_orig;
 130     FcFontSet   *set;
 131     FcStrSet    *subdirs;
 132     FcStrList   *sublist;
 133     struct stat statb;
 134
 135     /*
 136      * Now scan all of the directories into separate databases
 137      * and write out the results
 138      */
 139     while ((dir_orig = FcStrListNext (list)))
 140     {
 141         dir = FcConfigNormalizeFontDir (config, dir_orig);
 142
 143         if (verbose)
 144         {
 145             printf ("%s: \"%s\": ", program, dir ? dir : dir_orig);
 146             fflush (stdout);
 147         }
 148
 149         if (!dir)
 150         {
 151             if (verbose)
 152                 printf ("skipping, no such directory\n");
 153             continue;
 154         }
 155
 156         if (FcStrSetMember (processed_dirs, dir))
 157         {
 158             if (verbose)
 159                 printf ("skipping, looped directory detected\n");
 160             continue;
 161         }
 162
 163         set = FcFontSetCreate ();
 164         if (!set)
 165         {
 166             fprintf (stderr, "Can't create font set\n");
 167             ret++;
 168             continue;
 169         }
 170         subdirs = FcStrSetCreate ();
 171         if (!subdirs)
 172         {
 173             fprintf (stderr, "Can't create directory set\n");
 174             ret++;
 175             FcFontSetDestroy (set);
 176             continue;
 177         }
 178
 179         if (access ((char *) dir, W_OK) < 0)
 180         {
 181             switch (errno) {
 182             case ENOENT:
 183             case ENOTDIR:
 184                 if (verbose)
 185                     printf ("skipping, no such directory\n");
 186                 FcFontSetDestroy (set);
 187                 FcStrSetDestroy (subdirs);
 188                 continue;
 189             case EACCES:
 190             case EROFS:
 191                 /* That's ok, caches go to /var anyway. */
 192                 /* Ideally we'd do an access on the hashed_name. */
 193                 /* But we hid that behind an abstraction barrier. */
 194                 break;
 195             default:
 196                 fprintf (stderr, "\"%s\": ", dir);
 197                 perror ("");
 198                 ret++;
 199
 200                 FcFontSetDestroy (set);
 201                 FcStrSetDestroy (subdirs);
 202                 continue;
 203             }
 204         }
 205         if (stat ((char *) dir, &statb) == -1)
 206         {
 207             fprintf (stderr, "\"%s\": ", dir);
 208             perror ("");
 209             FcFontSetDestroy (set);
 210             FcStrSetDestroy (subdirs);
 211             ret++;
 212             continue;
 213         }
 214         if (!S_ISDIR (statb.st_mode))
 215         {
 216             fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
 217             FcFontSetDestroy (set);
 218             FcStrSetDestroy (subdirs);
 219             continue;
 220         }
 221
 222         if (really_force)
 223             FcDirCacheUnlink (dir, config);
 224
 225         if (!FcDirScanConfig (set, subdirs, 0, FcConfigGetBlanks (config), dir, force, config))
 226         {
 227             fprintf (stderr, "\"%s\": error scanning\n", dir);
 228             FcFontSetDestroy (set);
 229             FcStrSetDestroy (subdirs);
 230             ret++;
 231             continue;
 232         }
 233         if (!force && FcDirCacheValid (dir, config) &&
 234             FcDirCacheHasCurrentArch (dir, config))
 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             /* This is the only reason we can't combine
 247              * Valid w/HasCurrentArch... */
 248             if (!FcDirCacheValid (dir, config))
 249                 if (!FcDirCacheUnlink (dir, config))
 250                     ret++;
 251
 252             if (!FcDirSave (set, subdirs, dir))
 253             {
 254                 fprintf (stderr, "Can't save cache for \"%s\"\n", dir);
 255                 ret++;
 256             }
 257         }
 258         FcFontSetDestroy (set);
 259         sublist = FcStrListCreate (subdirs);
 260         FcStrSetDestroy (subdirs);
 261         if (!sublist)
 262         {
 263             fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
 264             ret++;
 265             continue;
 266         }
 267         FcStrSetAdd (processed_dirs, dir);
 268         ret += scanDirs (sublist, config, program, force, really_force, verbose);
 269     }
 270     FcStrListDone (list);
 271     return ret;
 272 }
 273
 274 int
 275 main (int argc, char **argv)
 276 {
 277     FcStrSet    *dirs;
 278     FcStrList   *list;
 279     FcBool      verbose = FcFalse;
 280     FcBool      force = FcFalse;
 281     FcBool      really_force = FcFalse;
 282     FcBool      systemOnly = FcFalse;
 283     FcConfig    *config;
 284     int         i;
 285     int         ret;
 286 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 287     int         c;
 288
 289 #if HAVE_GETOPT_LONG
 290     while ((c = getopt_long (argc, argv, "frsVv?", longopts, NULL)) != -1)
 291 #else
 292     while ((c = getopt (argc, argv, "frsVv?")) != -1)
 293 #endif
 294     {
 295         switch (c) {
 296         case 'r':
 297             really_force = FcTrue;
 298             /* fall through */
 299         case 'f':
 300             force = FcTrue;
 301             break;
 302         case 's':
 303             systemOnly = FcTrue;
 304             break;
 305         case 'V':
 306             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 307                      FC_MAJOR, FC_MINOR, FC_REVISION);
 308             exit (0);
 309         case 'v':
 310             verbose = FcTrue;
 311             break;
 312         default:
 313             usage (argv[0]);
 314         }
 315     }
 316     i = optind;
 317 #else
 318     i = 1;
 319 #endif
 320
 321     if (systemOnly)
 322         FcConfigEnableHome (FcFalse);
 323     config = FcInitLoadConfig ();
 324     if (!config)
 325     {
 326         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 327         return 1;
 328     }
 329     FcConfigSetCurrent (config);
 330
 331     if (argv[i])
 332     {
 333         dirs = FcStrSetCreate ();
 334         if (!dirs)
 335         {
 336             fprintf (stderr, "%s: Can't create list of directories\n",
 337                      argv[0]);
 338             return 1;
 339         }
 340         while (argv[i])
 341         {
 342             if (!FcStrSetAdd (dirs, (FcChar8 *) argv[i]))
 343             {
 344                 fprintf (stderr, "%s: Can't add directory\n", argv[0]);
 345                 return 1;
 346             }
 347             i++;
 348         }
 349         list = FcStrListCreate (dirs);
 350         FcStrSetDestroy (dirs);
 351     }
 352     else
 353         list = FcConfigGetConfigDirs (config);
 354
 355     if ((processed_dirs = FcStrSetCreate()) == NULL) {
 356         fprintf(stderr, "Cannot malloc\n");
 357         return 1;
 358     }
 359
 360     ret = scanDirs (list, config, argv[0], force, really_force, verbose);
 361
 362     FcStrSetDestroy (processed_dirs);
 363
 364     /*
 365      * Now we need to sleep a second  (or two, to be extra sure), to make
 366      * sure that timestamps for changes after this run of fc-cache are later
 367      * then any timestamps we wrote.  We don't use gettimeofday() because
 368      * sleep(3) can't be interrupted by a signal here -- this isn't in the
 369      * library, and there aren't any signals flying around here.
 370      */
 371     FcConfigDestroy (config);
 372     sleep (2);
 373     if (verbose)
 374         printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded");
 375     return ret;
 376 }