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     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         dir = FcConfigNormalizeFontDir (config, dir);
 128         if (!dir)
 129             return FcFalse;
 130
 131         if (verbose)
 132         {
 133             printf ("%s: \"%s\": ", program, dir);
 134             fflush (stdout);
 135         }
 136         set = FcFontSetCreate ();
 137         if (!set)
 138         {
 139             fprintf (stderr, "Can't create font set\n");
 140             ret++;
 141             continue;
 142         }
 143         subdirs = FcStrSetCreate ();
 144         if (!subdirs)
 145         {
 146             fprintf (stderr, "Can't create directory set\n");
 147             ret++;
 148             FcFontSetDestroy (set);
 149             continue;
 150         }
 151
 152         if (access ((char *) dir, W_OK) < 0)
 153         {
 154             switch (errno) {
 155             case ENOENT:
 156             case ENOTDIR:
 157                 if (verbose)
 158                     printf ("skipping, no such directory\n");
 159                 break;
 160             case EACCES:
 161             case EROFS:
 162                 if (verbose)
 163                     printf ("skipping, no write access\n");
 164                 break;
 165             default:
 166                 fprintf (stderr, "\"%s\": ", dir);
 167                 perror ("");
 168                 ret++;
 169             }
 170             FcFontSetDestroy (set);
 171             FcStrSetDestroy (subdirs);
 172             continue;
 173         }
 174         if (stat ((char *) dir, &statb) == -1)
 175         {
 176             fprintf (stderr, "\"%s\": ", dir);
 177             perror ("");
 178             FcFontSetDestroy (set);
 179             FcStrSetDestroy (subdirs);
 180             ret++;
 181             continue;
 182         }
 183         if (!S_ISDIR (statb.st_mode))
 184         {
 185             fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
 186             FcFontSetDestroy (set);
 187             FcStrSetDestroy (subdirs);
 188             continue;
 189         }
 190         if (!FcDirScanConfig (set, subdirs, 0, FcConfigGetBlanks (config), dir, force, config))
 191         {
 192             fprintf (stderr, "\"%s\": error scanning\n", dir);
 193             FcFontSetDestroy (set);
 194             FcStrSetDestroy (subdirs);
 195             ret++;
 196             continue;
 197         }
 198         if (!force && FcDirCacheValid (dir) && FcDirCacheHasCurrentArch (dir))
 199         {
 200             if (verbose)
 201                 printf ("skipping, %d fonts, %d dirs\n",
 202                         set->nfont, nsubdirs(subdirs));
 203         }
 204         else
 205         {
 206             if (verbose)
 207                 printf ("caching, %d fonts, %d dirs\n",
 208                         set->nfont, nsubdirs (subdirs));
 209
 210             if (!FcDirCacheValid (dir))
 211                 if (!FcDirCacheUnlink (dir, config))
 212                     ret++;
 213
 214             if (!FcDirSave (set, subdirs, dir))
 215             {
 216                 if (!ret)
 217                     fprintf (stderr, "Caches are currently saved to \"%s\"\n", PKGCACHEDIR);
 218                 fprintf (stderr, "Can't save cache for \"%s\"\n", dir);
 219                 ret++;
 220             }
 221         }
 222         FcFontSetDestroy (set);
 223         sublist = FcStrListCreate (subdirs);
 224         FcStrSetDestroy (subdirs);
 225         if (!sublist)
 226         {
 227             fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
 228             ret++;
 229             continue;
 230         }
 231         ret += scanDirs (sublist, config, program, force, verbose);
 232     }
 233     FcStrListDone (list);
 234     return ret;
 235 }
 236
 237 int
 238 main (int argc, char **argv)
 239 {
 240     FcStrSet    *dirs;
 241     FcStrList   *list;
 242     FcBool      verbose = FcFalse;
 243     FcBool      force = FcFalse;
 244     FcBool      systemOnly = FcFalse;
 245     FcConfig    *config;
 246     int         i;
 247     int         ret;
 248 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 249     int         c;
 250
 251 #if HAVE_GETOPT_LONG
 252     while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
 253 #else
 254     while ((c = getopt (argc, argv, "fsVv?")) != -1)
 255 #endif
 256     {
 257         switch (c) {
 258         case 'f':
 259             force = FcTrue;
 260             break;
 261         case 's':
 262             systemOnly = FcTrue;
 263             break;
 264         case 'V':
 265             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 266                      FC_MAJOR, FC_MINOR, FC_REVISION);
 267             exit (0);
 268         case 'v':
 269             verbose = FcTrue;
 270             break;
 271         default:
 272             usage (argv[0]);
 273         }
 274     }
 275     i = optind;
 276 #else
 277     i = 1;
 278 #endif
 279
 280     if (systemOnly)
 281         FcConfigEnableHome (FcFalse);
 282     config = FcInitLoadConfig ();
 283     if (!config)
 284     {
 285         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 286         return 1;
 287     }
 288     FcConfigSetCurrent (config);
 289
 290     if (argv[i])
 291     {
 292         dirs = FcStrSetCreate ();
 293         if (!dirs)
 294         {
 295             fprintf (stderr, "%s: Can't create list of directories\n",
 296                      argv[0]);
 297             return 1;
 298         }
 299         while (argv[i])
 300         {
 301             if (!FcStrSetAdd (dirs, (FcChar8 *) argv[i]))
 302             {
 303                 fprintf (stderr, "%s: Can't add directory\n", argv[0]);
 304                 return 1;
 305             }
 306             i++;
 307         }
 308         list = FcStrListCreate (dirs);
 309         FcStrSetDestroy (dirs);
 310     }
 311     else
 312         list = FcConfigGetConfigDirs (config);
 313     ret = scanDirs (list, config, argv[0], force, verbose);
 314     /*
 315      * Now we need to sleep a second  (or two, to be extra sure), to make
 316      * sure that timestamps for changes after this run of fc-cache are later
 317      * then any timestamps we wrote.  We don't use gettimeofday() because
 318      * sleep(3) can't be interrupted by a signal here -- this isn't in the
 319      * library, and there aren't any signals flying around here.
 320      */
 321     FcConfigDestroy (config);
 322     sleep (2);
 323     if (verbose)
 324         printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded");
 325     return ret;
 326 }