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     FcFontSet   *set;
 130     FcStrSet    *subdirs;
 131     FcStrList   *sublist;
 132     struct stat statb;
 133
 134     /*
 135      * Now scan all of the directories into separate databases
 136      * and write out the results
 137      */
 138     while ((dir = FcStrListNext (list)))
 139     {
 140         if (verbose)
 141         {
 142             printf ("%s: \"%s\": ", program, dir);
 143             fflush (stdout);
 144         }
 145
 146         if (!dir)
 147         {
 148             if (verbose)
 149                 printf ("skipping, no such directory\n");
 150             continue;
 151         }
 152
 153         if (FcStrSetMember (processed_dirs, dir))
 154         {
 155             if (verbose)
 156                 printf ("skipping, looped directory detected\n");
 157             continue;
 158         }
 159
 160         set = FcFontSetCreate ();
 161         if (!set)
 162         {
 163             fprintf (stderr, "Can't create font set\n");
 164             ret++;
 165             continue;
 166         }
 167         subdirs = FcStrSetCreate ();
 168         if (!subdirs)
 169         {
 170             fprintf (stderr, "Can't create directory set\n");
 171             ret++;
 172             FcFontSetDestroy (set);
 173             continue;
 174         }
 175
 176         if (access ((char *) dir, W_OK) < 0)
 177         {
 178             switch (errno) {
 179             case ENOENT:
 180             case ENOTDIR:
 181                 if (verbose)
 182                     printf ("skipping, no such directory\n");
 183                 FcFontSetDestroy (set);
 184                 FcStrSetDestroy (subdirs);
 185                 continue;
 186             case EACCES:
 187             case EROFS:
 188                 /* That's ok, caches go to /var anyway. */
 189                 /* Ideally we'd do an access on the hashed_name. */
 190                 /* But we hid that behind an abstraction barrier. */
 191                 break;
 192             default:
 193                 fprintf (stderr, "\"%s\": ", dir);
 194                 perror ("");
 195                 ret++;
 196
 197                 FcFontSetDestroy (set);
 198                 FcStrSetDestroy (subdirs);
 199                 continue;
 200             }
 201         }
 202         if (stat ((char *) dir, &statb) == -1)
 203         {
 204             fprintf (stderr, "\"%s\": ", dir);
 205             perror ("");
 206             FcFontSetDestroy (set);
 207             FcStrSetDestroy (subdirs);
 208             ret++;
 209             continue;
 210         }
 211         if (!S_ISDIR (statb.st_mode))
 212         {
 213             fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
 214             FcFontSetDestroy (set);
 215             FcStrSetDestroy (subdirs);
 216             continue;
 217         }
 218
 219         if (really_force)
 220             FcDirCacheUnlink (dir, config);
 221
 222         if (!FcDirScanConfig (set, subdirs, 0, FcConfigGetBlanks (config), dir, force, config))
 223         {
 224             fprintf (stderr, "\"%s\": error scanning\n", dir);
 225             FcFontSetDestroy (set);
 226             FcStrSetDestroy (subdirs);
 227             ret++;
 228             continue;
 229         }
 230         if (!force && FcDirCacheValid (dir, config) &&
 231             FcDirCacheHasCurrentArch (dir, config))
 232         {
 233             if (verbose)
 234                 printf ("skipping, %d fonts, %d dirs\n",
 235                         set->nfont, nsubdirs(subdirs));
 236         }
 237         else
 238         {
 239             if (verbose)
 240                 printf ("caching, %d fonts, %d dirs\n",
 241                         set->nfont, nsubdirs (subdirs));
 242
 243             /* This is the only reason we can't combine
 244              * Valid w/HasCurrentArch... */
 245             if (!FcDirCacheValid (dir, config))
 246                 if (!FcDirCacheUnlink (dir, config))
 247                     ret++;
 248
 249             if (!FcDirSave (set, subdirs, dir))
 250             {
 251                 fprintf (stderr, "Can't save cache for \"%s\"\n", dir);
 252                 ret++;
 253             }
 254         }
 255         FcFontSetDestroy (set);
 256         sublist = FcStrListCreate (subdirs);
 257         FcStrSetDestroy (subdirs);
 258         if (!sublist)
 259         {
 260             fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
 261             ret++;
 262             continue;
 263         }
 264         FcStrSetAdd (processed_dirs, dir);
 265         ret += scanDirs (sublist, config, program, force, really_force, verbose);
 266     }
 267     FcStrListDone (list);
 268     return ret;
 269 }
 270
 271 int
 272 main (int argc, char **argv)
 273 {
 274     FcStrSet    *dirs;
 275     FcStrList   *list;
 276     FcBool      verbose = FcFalse;
 277     FcBool      force = FcFalse;
 278     FcBool      really_force = FcFalse;
 279     FcBool      systemOnly = FcFalse;
 280     FcConfig    *config;
 281     int         i;
 282     int         ret;
 283 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 284     int         c;
 285
 286 #if HAVE_GETOPT_LONG
 287     while ((c = getopt_long (argc, argv, "frsVv?", longopts, NULL)) != -1)
 288 #else
 289     while ((c = getopt (argc, argv, "frsVv?")) != -1)
 290 #endif
 291     {
 292         switch (c) {
 293         case 'r':
 294             really_force = FcTrue;
 295             /* fall through */
 296         case 'f':
 297             force = FcTrue;
 298             break;
 299         case 's':
 300             systemOnly = FcTrue;
 301             break;
 302         case 'V':
 303             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 304                      FC_MAJOR, FC_MINOR, FC_REVISION);
 305             exit (0);
 306         case 'v':
 307             verbose = FcTrue;
 308             break;
 309         default:
 310             usage (argv[0]);
 311         }
 312     }
 313     i = optind;
 314 #else
 315     i = 1;
 316 #endif
 317
 318     if (systemOnly)
 319         FcConfigEnableHome (FcFalse);
 320     config = FcInitLoadConfig ();
 321     if (!config)
 322     {
 323         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 324         return 1;
 325     }
 326     FcConfigSetCurrent (config);
 327
 328     if (argv[i])
 329     {
 330         dirs = FcStrSetCreate ();
 331         if (!dirs)
 332         {
 333             fprintf (stderr, "%s: Can't create list of directories\n",
 334                      argv[0]);
 335             return 1;
 336         }
 337         while (argv[i])
 338         {
 339             if (!FcStrSetAdd (dirs, (FcChar8 *) argv[i]))
 340             {
 341                 fprintf (stderr, "%s: Can't add directory\n", argv[0]);
 342                 return 1;
 343             }
 344             i++;
 345         }
 346         list = FcStrListCreate (dirs);
 347         FcStrSetDestroy (dirs);
 348     }
 349     else
 350         list = FcConfigGetConfigDirs (config);
 351
 352     if ((processed_dirs = FcStrSetCreate()) == NULL) {
 353         fprintf(stderr, "Cannot malloc\n");
 354         return 1;
 355     }
 356
 357     ret = scanDirs (list, config, argv[0], force, really_force, verbose);
 358
 359     FcStrSetDestroy (processed_dirs);
 360
 361     /*
 362      * Now we need to sleep a second  (or two, to be extra sure), to make
 363      * sure that timestamps for changes after this run of fc-cache are later
 364      * then any timestamps we wrote.  We don't use gettimeofday() because
 365      * sleep(3) can't be interrupted by a signal here -- this isn't in the
 366      * library, and there aren't any signals flying around here.
 367      */
 368     FcConfigDestroy (config);
 369     sleep (2);
 370     if (verbose)
 371         printf ("%s: %s\n", argv[0], ret ? "failed" : "succeeded");
 372     return ret;
 373 }