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     FcChar8     *dir;
 116     FcFontSet   *set;
 117     FcStrSet    *subdirs;
 118     FcStrList   *sublist;
 119     struct stat statb;
 120
 121     /*
 122      * Now scan all of the directories into separate databases
 123      * and write out the results
 124      */
 125     while ((dir = FcStrListNext (list)))
 126     {
 127         if (verbose)
 128         {
 129             printf ("%s: \"%s\": ", program, dir);
 130             fflush (stdout);
 131         }
 132         set = FcFontSetCreate ();
 133         if (!set)
 134         {
 135             fprintf (stderr, "Can't create font set\n");
 136             ret++;
 137             continue;
 138         }
 139         subdirs = FcStrSetCreate ();
 140         if (!subdirs)
 141         {
 142             fprintf (stderr, "Can't create directory set\n");
 143             ret++;
 144             FcFontSetDestroy (set);
 145             continue;
 146         }
 147
 148         if (access ((char *) dir, W_OK) < 0)
 149         {
 150             switch (errno) {
 151             case ENOENT:
 152             case ENOTDIR:
 153                 if (verbose)
 154                     printf ("skipping, no such directory\n");
 155                 break;
 156             case EACCES:
 157             case EROFS:
 158                 if (verbose)
 159                     printf ("skipping, no write access\n");
 160                 break;
 161             default:
 162                 fprintf (stderr, "\"%s\": ", dir);
 163                 perror ("");
 164                 ret++;
 165             }
 166             FcFontSetDestroy (set);
 167             FcStrSetDestroy (subdirs);
 168             continue;
 169         }
 170         if (stat ((char *) dir, &statb) == -1)
 171         {
 172             fprintf (stderr, "\"%s\": ", dir);
 173             perror ("");
 174             FcFontSetDestroy (set);
 175             FcStrSetDestroy (subdirs);
 176             ret++;
 177             continue;
 178         }
 179         if (!S_ISDIR (statb.st_mode))
 180         {
 181             fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
 182             FcFontSetDestroy (set);
 183             FcStrSetDestroy (subdirs);
 184             continue;
 185         }
 186         if (!FcDirScan (set, subdirs, 0, FcConfigGetBlanks (config), dir, force))
 187         {
 188             fprintf (stderr, "\"%s\": error scanning\n", dir);
 189             FcFontSetDestroy (set);
 190             FcStrSetDestroy (subdirs);
 191             ret++;
 192             continue;
 193         }
 194         if (!force && FcDirCacheValid (dir) && FcDirCacheHasCurrentArch (dir))
 195         {
 196             if (verbose)
 197                 printf ("skipping, %d fonts, %d dirs\n",
 198                         set->nfont, nsubdirs(subdirs));
 199         }
 200         else
 201         {
 202             if (verbose)
 203                 printf ("caching, %d fonts, %d dirs\n",
 204                         set->nfont, nsubdirs (subdirs));
 205
 206             if (!FcDirCacheValid (dir))
 207                 if (!FcDirCacheUnlink (dir))
 208                     ret++;
 209
 210             if (!FcDirSave (set, subdirs, dir))
 211             {
 212                 fprintf (stderr, "Can't save cache in \"%s\"\n", dir);
 213                 ret++;
 214             }
 215         }
 216         FcFontSetDestroy (set);
 217         sublist = FcStrListCreate (subdirs);
 218         FcStrSetDestroy (subdirs);
 219         if (!sublist)
 220         {
 221             fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
 222             ret++;
 223             continue;
 224         }
 225         ret += scanDirs (sublist, config, program, force, verbose);
 226     }
 227     FcStrListDone (list);
 228     return ret;
 229 }
 230
 231 int
 232 main (int argc, char **argv)
 233 {
 234     FcStrSet    *dirs;
 235     FcStrList   *list;
 236     FcBool      verbose = FcFalse;
 237     FcBool      force = FcFalse;
 238     FcBool      systemOnly = FcFalse;
 239     FcConfig    *config;
 240     int         i;
 241     int         ret;
 242 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 243     int         c;
 244
 245 #if HAVE_GETOPT_LONG
 246     while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
 247 #else
 248     while ((c = getopt (argc, argv, "fsVv?")) != -1)
 249 #endif
 250     {
 251         switch (c) {
 252         case 'f':
 253             force = FcTrue;
 254             break;
 255         case 's':
 256             systemOnly = FcTrue;
 257             break;
 258         case 'V':
 259             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 260                      FC_MAJOR, FC_MINOR, FC_REVISION);
 261             exit (0);
 262         case 'v':
 263             verbose = FcTrue;
 264             break;
 265         default:
 266             usage (argv[0]);
 267         }
 268     }
 269     i = optind;
 270 #else
 271     i = 1;
 272 #endif
 273
 274     if (systemOnly)
 275         FcConfigEnableHome (FcFalse);
 276     config = FcInitLoadConfig ();
 277     if (!config)
 278     {
 279         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 280         return 1;
 281     }
 282
 283     if (argv[i])
 284     {
 285         dirs = FcStrSetCreate ();
 286         if (!dirs)
 287         {
 288             fprintf (stderr, "%s: Can't create list of directories\n",
 289                      argv[0]);
 290             return 1;
 291         }
 292         while (argv[i])
 293         {
 294             if (!FcStrSetAdd (dirs, (FcChar8 *) argv[i]))
 295             {
 296                 fprintf (stderr, "%s: Can't add directory\n", argv[0]);
 297                 return 1;
 298             }
 299             i++;
 300         }
 301         list = FcStrListCreate (dirs);
 302         FcStrSetDestroy (dirs);
 303     }
 304     else
 305         list = FcConfigGetConfigDirs (config);
 306     ret = scanDirs (list, config, argv[0], force, verbose);
 307     /*
 308      * Now we need to sleep a second  (or two, to be extra sure), to make
 309      * sure that timestamps for changes after this run of fc-cache are later
 310      * then any timestamps we wrote.  We don't use gettimeofday() because
 311      * sleep(3) can't be interrupted by a signal here -- this isn't in the
 312      * library, and there aren't any signals flying around here.
 313      */
 314     FcConfigDestroy (config);
 315     sleep (2);
 316     if (verbose)
 317         printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded");
 318     return ret;
 319 }