fc-cat/fc-cat.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 "../fc-arch/fcarch.h"
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include <sys/types.h>
  41 #include <sys/stat.h>
  42 #include <errno.h>
  43
  44 #ifndef HAVE_GETOPT
  45 #define HAVE_GETOPT 0
  46 #endif
  47 #ifndef HAVE_GETOPT_LONG
  48 #define HAVE_GETOPT_LONG 0
  49 #endif
  50
  51 #if HAVE_GETOPT_LONG
  52 #undef  _GNU_SOURCE
  53 #define _GNU_SOURCE
  54 #include <getopt.h>
  55 const struct option longopts[] = {
  56     {"version", 0, 0, 'V'},
  57     {"verbose", 0, 0, 'v'},
  58     {"recurse", 0, 0, 'r'},
  59     {"help", 0, 0, '?'},
  60     {NULL,0,0,0},
  61 };
  62 #else
  63 #if HAVE_GETOPT
  64 extern char *optarg;
  65 extern int optind, opterr, optopt;
  66 #endif
  67 #endif
  68
  69 /*
  70  * POSIX has broken stdio so that getc must do thread-safe locking,
  71  * this is a serious performance problem for applications doing large
  72  * amounts of IO with getc (as is done here).  If available, use
  73  * the getc_unlocked varient instead.
  74  */
  75
  76 #if defined(getc_unlocked) || defined(_IO_getc_unlocked)
  77 #define GETC(f) getc_unlocked(f)
  78 #define PUTC(c,f) putc_unlocked(c,f)
  79 #else
  80 #define GETC(f) getc(f)
  81 #define PUTC(c,f) putc(c,f)
  82 #endif
  83
  84 static FcBool
  85 write_chars (FILE *f, const FcChar8 *chars)
  86 {
  87     FcChar8    c;
  88     while ((c = *chars++))
  89     {
  90         switch (c) {
  91         case '"':
  92         case '\\':
  93             if (PUTC ('\\', f) == EOF)
  94                 return FcFalse;
  95             /* fall through */
  96         default:
  97             if (PUTC (c, f) == EOF)
  98                 return FcFalse;
  99         }
 100     }
 101     return FcTrue;
 102 }
 103
 104 static FcBool
 105 write_ulong (FILE *f, unsigned long t)
 106 {
 107     int     pow;
 108     unsigned long   temp, digit;
 109
 110     temp = t;
 111     pow = 1;
 112     while (temp >= 10)
 113     {
 114         temp /= 10;
 115         pow *= 10;
 116     }
 117     temp = t;
 118     while (pow)
 119     {
 120         digit = temp / pow;
 121         if (PUTC ((char) digit + '0', f) == EOF)
 122             return FcFalse;
 123         temp = temp - pow * digit;
 124         pow = pow / 10;
 125     }
 126     return FcTrue;
 127 }
 128
 129 static FcBool
 130 write_int (FILE *f, int i)
 131 {
 132     return write_ulong (f, (unsigned long) i);
 133 }
 134
 135 static FcBool
 136 write_string (FILE *f, const FcChar8 *string)
 137 {
 138
 139     if (PUTC ('"', f) == EOF)
 140         return FcFalse;
 141     if (!write_chars (f, string))
 142         return FcFalse;
 143     if (PUTC ('"', f) == EOF)
 144         return FcFalse;
 145     return FcTrue;
 146 }
 147
 148 static void
 149 usage (char *program)
 150 {
 151 #if HAVE_GETOPT_LONG
 152     fprintf (stderr, "usage: %s [-V?] [--version] [--help] {*-%s.cache-2|directory}...\n",
 153              program, FC_ARCHITECTURE);
 154 #else
 155     fprintf (stderr, "usage: %s [-fsvV?] {*-%s.cache-2|directory}...\n",
 156              program, FC_ARCHITECTURE);
 157 #endif
 158     fprintf (stderr, "Reads font information cache from:\n");
 159     fprintf (stderr, " 1) specified fontconfig cache file\n");
 160     fprintf (stderr, " 2) related to a particular font directory\n");
 161     fprintf (stderr, "\n");
 162 #if HAVE_GETOPT_LONG
 163     fprintf (stderr, "  -V, --version        display font config version and exit\n");
 164     fprintf (stderr, "  -?, --help           display this help and exit\n");
 165 #else
 166     fprintf (stderr, "  -V         (version) display font config version and exit\n");
 167     fprintf (stderr, "  -?         (help)    display this help and exit\n");
 168 #endif
 169     exit (1);
 170 }
 171
 172 /*
 173  * return the path from the directory containing 'cache' to 'file'
 174  */
 175
 176 static const FcChar8 *
 177 file_base_name (const FcChar8 *cache, const FcChar8 *file)
 178 {
 179     int             cache_len = strlen ((char *) cache);
 180
 181     if (!strncmp ((char *) cache, (char *) file, cache_len) && file[cache_len] == '/')
 182         return file + cache_len + 1;
 183     return file;
 184 }
 185
 186 #define FC_FONT_FILE_DIR        ((FcChar8 *) ".dir")
 187
 188 static FcBool
 189 cache_print_set (FcFontSet *set, FcStrSet *dirs, const FcChar8 *base_name, FcBool verbose)
 190 {
 191     FcChar8         *name, *dir;
 192     const FcChar8   *file, *base;
 193     int             ret;
 194     int             n;
 195     int             id;
 196     int             ndir = 0;
 197     FcStrList       *list;
 198
 199     list = FcStrListCreate (dirs);
 200     if (!list)
 201         goto bail2;
 202
 203     while ((dir = FcStrListNext (list)))
 204     {
 205         base = file_base_name (base_name, dir);
 206         if (!write_string (stdout, base))
 207             goto bail3;
 208         if (PUTC (' ', stdout) == EOF)
 209             goto bail3;
 210         if (!write_int (stdout, 0))
 211             goto bail3;
 212         if (PUTC (' ', stdout) == EOF)
 213             goto bail3;
 214         if (!write_string (stdout, FC_FONT_FILE_DIR))
 215             goto bail3;
 216         if (PUTC ('\n', stdout) == EOF)
 217             goto bail3;
 218         ndir++;
 219     }
 220
 221     for (n = 0; n < set->nfont; n++)
 222     {
 223         FcPattern   *font = set->fonts[n];
 224
 225         if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
 226             goto bail3;
 227         base = file_base_name (base_name, file);
 228         if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
 229             goto bail3;
 230         if (!write_string (stdout, base))
 231             goto bail3;
 232         if (PUTC (' ', stdout) == EOF)
 233             goto bail3;
 234         if (!write_int (stdout, id))
 235             goto bail3;
 236         if (PUTC (' ', stdout) == EOF)
 237             goto bail3;
 238         name = FcNameUnparse (font);
 239         if (!name)
 240             goto bail3;
 241         ret = write_string (stdout, name);
 242         FcStrFree (name);
 243         if (!ret)
 244             goto bail3;
 245         if (PUTC ('\n', stdout) == EOF)
 246             goto bail3;
 247     }
 248     if (verbose && !set->nfont && !ndir)
 249         printf ("<empty>\n");
 250
 251     FcStrListDone (list);
 252
 253     return FcTrue;
 254
 255 bail3:
 256     FcStrListDone (list);
 257 bail2:
 258     return FcFalse;
 259 }
 260
 261 int
 262 main (int argc, char **argv)
 263 {
 264     int         i;
 265     int         ret = 0;
 266     FcFontSet   *fs;
 267     FcStrSet    *dirs;
 268     FcStrSet    *args = NULL;
 269     FcStrList   *arglist;
 270     FcCache     *cache;
 271     FcConfig    *config;
 272     FcChar8     *arg;
 273     int         verbose = 0;
 274     int         recurse = 0;
 275     FcBool      first = FcTrue;
 276 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 277     int         c;
 278
 279 #if HAVE_GETOPT_LONG
 280     while ((c = getopt_long (argc, argv, "Vvr?", longopts, NULL)) != -1)
 281 #else
 282     while ((c = getopt (argc, argv, "Vvr?")) != -1)
 283 #endif
 284     {
 285         switch (c) {
 286         case 'V':
 287             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 288                      FC_MAJOR, FC_MINOR, FC_REVISION);
 289             exit (0);
 290         case 'v':
 291             verbose++;
 292             break;
 293         case 'r':
 294             recurse++;
 295             break;
 296         default:
 297             usage (argv[0]);
 298         }
 299     }
 300     i = optind;
 301 #else
 302     i = 1;
 303 #endif
 304
 305     config = FcInitLoadConfig ();
 306     if (!config)
 307     {
 308         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 309         return 1;
 310     }
 311     FcConfigSetCurrent (config);
 312
 313     args = FcStrSetCreate ();
 314     if (!args)
 315     {
 316         fprintf (stderr, "%s: malloc failure\n", argv[0]);
 317         return 1;
 318     }
 319     if (i < argc)
 320     {
 321         for (; i < argc; i++)
 322         {
 323             if (!FcStrSetAddFilename (args, (const FcChar8 *) argv[i]))
 324             {
 325                 fprintf (stderr, "%s: malloc failure\n", argv[0]);
 326                 return 1;
 327             }
 328         }
 329         arglist = FcStrListCreate (args);
 330         if (!arglist)
 331         {
 332             fprintf (stderr, "%s: malloc failure\n", argv[0]);
 333             return 1;
 334         }
 335     }
 336     else
 337     {
 338         recurse++;
 339         arglist = FcConfigGetFontDirs (config);
 340         while ((arg = FcStrListNext (arglist)))
 341             if (!FcStrSetAdd (args, arg))
 342             {
 343                 fprintf (stderr, "%s: malloc failure\n", argv[0]);
 344                 return 1;
 345             }
 346         FcStrListDone (arglist);
 347     }
 348     arglist = FcStrListCreate (args);
 349     if (!arglist)
 350     {
 351         fprintf (stderr, "%s: malloc failure\n", argv[0]);
 352         return 1;
 353     }
 354
 355     while ((arg = FcStrListNext (arglist)))
 356     {
 357         int         j;
 358         FcChar8     *cache_file = NULL;
 359         struct stat file_stat;
 360
 361         if (FcFileIsDir (arg))
 362             cache = FcDirCacheLoad (arg, config, &cache_file);
 363         else
 364             cache = FcDirCacheLoadFile (arg, &file_stat);
 365         if (!cache)
 366         {
 367             perror ((char *) arg);
 368             ret++;
 369             continue;
 370         }
 371
 372         dirs = FcStrSetCreate ();
 373         fs = FcCacheCopySet (cache);
 374         for (j = 0; j < FcCacheNumSubdir (cache); j++)
 375         {
 376             FcStrSetAdd (dirs, FcCacheSubdir (cache, j));
 377             if (recurse)
 378                 FcStrSetAdd (args, FcCacheSubdir (cache, j));
 379         }
 380
 381         if (verbose)
 382         {
 383             if (!first)
 384                 printf ("\n");
 385             printf ("Directory: %s\nCache: %s\n--------\n",
 386                     FcCacheDir(cache), cache_file ? cache_file : arg);
 387             first = FcFalse;
 388         }
 389         cache_print_set (fs, dirs, FcCacheDir (cache), verbose);
 390
 391         FcStrSetDestroy (dirs);
 392
 393         FcFontSetDestroy (fs);
 394         FcDirCacheUnload (cache);
 395         if (cache_file)
 396             FcStrFree (cache_file);
 397     }
 398
 399     return 0;
 400 }