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 #if 0
  97 static int
  98 nsubdirs (FcStrSet *set)
  99 {
 100     FcStrList   *list;
 101     int         n = 0;
 102
 103     list = FcStrListCreate (set);
 104     if (!list)
 105         return 0;
 106     while (FcStrListNext (list))
 107         n++;
 108     FcStrListDone (list);
 109     return n;
 110 }
 111
 112 static int
 113 scanDirs (FcStrList *list, FcConfig *config, char *program, FcBool force, FcBool verbose)
 114 {
 115     int         ret = 0;
 116     FcChar8     *dir;
 117     FcFontSet   *set;
 118     FcStrSet    *subdirs;
 119     FcStrList   *sublist;
 120     struct stat statb;
 121
 122     /*
 123      * Now scan all of the directories into separate databases
 124      * and write out the results
 125      */
 126     while ((dir = FcStrListNext (list)))
 127     {
 128         if (verbose)
 129         {
 130             printf ("%s: \"%s\": ", program, dir);
 131             fflush (stdout);
 132         }
 133         set = FcFontSetCreate ();
 134         if (!set)
 135         {
 136             fprintf (stderr, "Can't create font set\n");
 137             ret++;
 138             continue;
 139         }
 140         subdirs = FcStrSetCreate ();
 141         if (!subdirs)
 142         {
 143             fprintf (stderr, "Can't create directory set\n");
 144             ret++;
 145             FcFontSetDestroy (set);
 146             continue;
 147         }
 148
 149         if (access ((char *) dir, W_OK) < 0)
 150         {
 151             switch (errno) {
 152             case ENOENT:
 153             case ENOTDIR:
 154                 if (verbose)
 155                     printf ("skipping, no such directory\n");
 156                 break;
 157             case EACCES:
 158             case EROFS:
 159                 if (verbose)
 160                     printf ("skipping, no write access\n");
 161                 break;
 162             default:
 163                 fprintf (stderr, "\"%s\": ", dir);
 164                 perror ("");
 165                 ret++;
 166             }
 167             FcFontSetDestroy (set);
 168             FcStrSetDestroy (subdirs);
 169             continue;
 170         }
 171         if (stat ((char *) dir, &statb) == -1)
 172         {
 173             fprintf (stderr, "\"%s\": ", dir);
 174             perror ("");
 175             FcFontSetDestroy (set);
 176             FcStrSetDestroy (subdirs);
 177             ret++;
 178             continue;
 179         }
 180         if (!S_ISDIR (statb.st_mode))
 181         {
 182             fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
 183             FcFontSetDestroy (set);
 184             FcStrSetDestroy (subdirs);
 185             continue;
 186         }
 187         if (!FcDirScan (set, subdirs, 0, FcConfigGetBlanks (config), dir, force))
 188         {
 189             fprintf (stderr, "\"%s\": error scanning\n", dir);
 190             FcFontSetDestroy (set);
 191             FcStrSetDestroy (subdirs);
 192             ret++;
 193             continue;
 194         }
 195         if (!force && FcDirCacheValid (dir))
 196         {
 197             if (verbose)
 198                 printf ("skipping, %d fonts, %d dirs\n",
 199                         set->nfont, nsubdirs(subdirs));
 200         }
 201         else
 202         {
 203             if (verbose)
 204                 printf ("caching, %d fonts, %d dirs\n",
 205                         set->nfont, nsubdirs (subdirs));
 206             if (!FcDirSave (set, subdirs, dir))
 207             {
 208                 fprintf (stderr, "Can't save cache in \"%s\"\n", dir);
 209                 ret++;
 210             }
 211         }
 212         FcFontSetDestroy (set);
 213         sublist = FcStrListCreate (subdirs);
 214         FcStrSetDestroy (subdirs);
 215         if (!sublist)
 216         {
 217             fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
 218             ret++;
 219             continue;
 220         }
 221         ret += scanDirs (sublist, config, program, force, verbose);
 222     }
 223     FcStrListDone (list);
 224     return ret;
 225 }
 226 #endif
 227
 228 int
 229 main (int argc, char **argv)
 230 {
 231     FcStrSet    *dirs;
 232     FcStrList   *list;
 233     FcBool      verbose = FcFalse;
 234     FcBool      force = FcFalse;
 235     FcBool      systemOnly = FcFalse;
 236     FcConfig    *config;
 237     int         i;
 238     int         ret;
 239 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 240     int         c;
 241
 242 #if HAVE_GETOPT_LONG
 243     while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
 244 #else
 245     while ((c = getopt (argc, argv, "fsVv?")) != -1)
 246 #endif
 247     {
 248         switch (c) {
 249         case 'f':
 250             force = FcTrue;
 251             break;
 252         case 's':
 253             systemOnly = FcTrue;
 254             break;
 255         case 'V':
 256             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 257                      FC_MAJOR, FC_MINOR, FC_REVISION);
 258             exit (0);
 259         case 'v':
 260             verbose = FcTrue;
 261             break;
 262         default:
 263             usage (argv[0]);
 264         }
 265     }
 266     i = optind;
 267 #else
 268     i = 1;
 269 #endif
 270
 271     if (systemOnly)
 272         FcConfigEnableHome (FcFalse);
 273     FcCacheForce (FcTrue);
 274     /* need to use FcInitLoadConfig when we use dirs */
 275     FcInit ();
 276     config = FcConfigGetCurrent ();
 277     if (!config)
 278     {
 279         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 280         return 1;
 281     }
 282
 283     /* We don't yet have per-directory caches. */
 284     ret = (FcCacheWrite (config) == FcFalse);
 285
 286 #if 0
 287     if (argv[i])
 288     {
 289         dirs = FcStrSetCreate ();
 290         if (!dirs)
 291         {
 292             fprintf (stderr, "%s: Can't create list of directories\n",
 293                      argv[0]);
 294             return 1;
 295         }
 296         while (argv[i])
 297         {
 298             if (!FcStrSetAdd (dirs, (FcChar8 *) argv[i]))
 299             {
 300                 fprintf (stderr, "%s: Can't add directory\n", argv[0]);
 301                 return 1;
 302             }
 303             i++;
 304         }
 305         list = FcStrListCreate (dirs);
 306         FcStrSetDestroy (dirs);
 307     }
 308     else
 309         list = FcConfigGetConfigDirs (config);
 310     ret = scanDirs (list, config, argv[0], force, verbose);
 311 #endif
 312     /*
 313      * Now we need to sleep a second  (or two, to be extra sure), to make
 314      * sure that timestamps for changes after this run of fc-cache are later
 315      * then any timestamps we wrote.  We don't use gettimeofday() because
 316      * sleep(3) can't be interrupted by a signal here -- this isn't in the
 317      * library, and there aren't any signals flying around here.
 318      */
 319     FcConfigDestroy (config);
 320     sleep (2);
 321     if (verbose)
 322         printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded");
 323     return ret;
 324 }