fc-cat/fc-cat.c

   1 /*
   2  * fontconfig/fc-cat/fc-cat.c
   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  * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  17  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  18  * EVENT SHALL THE AUTHOR(S) 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, 'h'},
  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, int error)
 150 {
 151     FILE *file = error ? stderr : stdout;
 152 #if HAVE_GETOPT_LONG
 153     fprintf (file, "usage: %s [-rv] [--recurse] [--verbose] [*-%s.cache-2|directory]...\n",
 154              program, FC_ARCHITECTURE);
 155     fprintf (file, "       %s [-Vh] [--version] [--help]\n", program);
 156 #else
 157     fprintf (file, "usage: %s [-rvVh] [*-%s.cache-2|directory]...\n",
 158              program, FC_ARCHITECTURE);
 159 #endif
 160     fprintf (file, "Reads font information cache from:\n");
 161     fprintf (file, " 1) specified fontconfig cache file\n");
 162     fprintf (file, " 2) related to a particular font directory\n");
 163     fprintf (file, "\n");
 164 #if HAVE_GETOPT_LONG
 165     fprintf (file, "  -r, --recurse        recurse into subdirectories\n");
 166     fprintf (file, "  -v, --verbose        be verbose\n");
 167     fprintf (file, "  -V, --version        display font config version and exit\n");
 168     fprintf (file, "  -h, --help           display this help and exit\n");
 169 #else
 170     fprintf (file, "  -r         (recurse) recurse into subdirectories\n");
 171     fprintf (file, "  -v         (verbose) be verbose\n");
 172     fprintf (file, "  -V         (version) display font config version and exit\n");
 173     fprintf (file, "  -h         (help)    display this help and exit\n");
 174 #endif
 175     exit (error);
 176 }
 177
 178 /*
 179  * return the path from the directory containing 'cache' to 'file'
 180  */
 181
 182 static const FcChar8 *
 183 file_base_name (const FcChar8 *cache, const FcChar8 *file)
 184 {
 185     int             cache_len = strlen ((char *) cache);
 186
 187     if (!strncmp ((char *) cache, (char *) file, cache_len) && file[cache_len] == '/')
 188         return file + cache_len + 1;
 189     return file;
 190 }
 191
 192 #define FC_FONT_FILE_DIR        ((FcChar8 *) ".dir")
 193
 194 static FcBool
 195 cache_print_set (FcFontSet *set, FcStrSet *dirs, const FcChar8 *base_name, FcBool verbose)
 196 {
 197     FcChar8         *name, *dir;
 198     const FcChar8   *file, *base;
 199     int             ret;
 200     int             n;
 201     int             id;
 202     int             ndir = 0;
 203     FcStrList       *list;
 204
 205     list = FcStrListCreate (dirs);
 206     if (!list)
 207         goto bail2;
 208
 209     while ((dir = FcStrListNext (list)))
 210     {
 211         base = file_base_name (base_name, dir);
 212         if (!write_string (stdout, base))
 213             goto bail3;
 214         if (PUTC (' ', stdout) == EOF)
 215             goto bail3;
 216         if (!write_int (stdout, 0))
 217             goto bail3;
 218         if (PUTC (' ', stdout) == EOF)
 219             goto bail3;
 220         if (!write_string (stdout, FC_FONT_FILE_DIR))
 221             goto bail3;
 222         if (PUTC ('\n', stdout) == EOF)
 223             goto bail3;
 224         ndir++;
 225     }
 226
 227     for (n = 0; n < set->nfont; n++)
 228     {
 229         FcPattern   *font = set->fonts[n];
 230
 231         if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
 232             goto bail3;
 233         base = file_base_name (base_name, file);
 234         if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
 235             goto bail3;
 236         if (!write_string (stdout, base))
 237             goto bail3;
 238         if (PUTC (' ', stdout) == EOF)
 239             goto bail3;
 240         if (!write_int (stdout, id))
 241             goto bail3;
 242         if (PUTC (' ', stdout) == EOF)
 243             goto bail3;
 244         name = FcNameUnparse (font);
 245         if (!name)
 246             goto bail3;
 247         ret = write_string (stdout, name);
 248         FcStrFree (name);
 249         if (!ret)
 250             goto bail3;
 251         if (PUTC ('\n', stdout) == EOF)
 252             goto bail3;
 253     }
 254     if (verbose && !set->nfont && !ndir)
 255         printf ("<empty>\n");
 256
 257     FcStrListDone (list);
 258
 259     return FcTrue;
 260
 261 bail3:
 262     FcStrListDone (list);
 263 bail2:
 264     return FcFalse;
 265 }
 266
 267 int
 268 main (int argc, char **argv)
 269 {
 270     int         i;
 271     int         ret = 0;
 272     FcFontSet   *fs;
 273     FcStrSet    *dirs;
 274     FcStrSet    *args = NULL;
 275     FcStrList   *arglist;
 276     FcCache     *cache;
 277     FcConfig    *config;
 278     FcChar8     *arg;
 279     int         verbose = 0;
 280     int         recurse = 0;
 281     FcBool      first = FcTrue;
 282 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 283     int         c;
 284
 285 #if HAVE_GETOPT_LONG
 286     while ((c = getopt_long (argc, argv, "Vvrh", longopts, NULL)) != -1)
 287 #else
 288     while ((c = getopt (argc, argv, "Vvrh")) != -1)
 289 #endif
 290     {
 291         switch (c) {
 292         case 'V':
 293             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 294                      FC_MAJOR, FC_MINOR, FC_REVISION);
 295             exit (0);
 296         case 'v':
 297             verbose++;
 298             break;
 299         case 'r':
 300             recurse++;
 301             break;
 302         case 'h':
 303             usage (argv[0], 0);
 304         default:
 305             usage (argv[0], 1);
 306         }
 307     }
 308     i = optind;
 309 #else
 310     i = 1;
 311 #endif
 312
 313     config = FcInitLoadConfig ();
 314     if (!config)
 315     {
 316         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 317         return 1;
 318     }
 319     FcConfigSetCurrent (config);
 320
 321     args = FcStrSetCreate ();
 322     if (!args)
 323     {
 324         fprintf (stderr, "%s: malloc failure\n", argv[0]);
 325         return 1;
 326     }
 327     if (i < argc)
 328     {
 329         for (; i < argc; i++)
 330         {
 331             if (!FcStrSetAddFilename (args, (const FcChar8 *) argv[i]))
 332             {
 333                 fprintf (stderr, "%s: malloc failure\n", argv[0]);
 334                 return 1;
 335             }
 336         }
 337         arglist = FcStrListCreate (args);
 338         if (!arglist)
 339         {
 340             fprintf (stderr, "%s: malloc failure\n", argv[0]);
 341             return 1;
 342         }
 343     }
 344     else
 345     {
 346         recurse++;
 347         arglist = FcConfigGetFontDirs (config);
 348         while ((arg = FcStrListNext (arglist)))
 349             if (!FcStrSetAdd (args, arg))
 350             {
 351                 fprintf (stderr, "%s: malloc failure\n", argv[0]);
 352                 return 1;
 353             }
 354         FcStrListDone (arglist);
 355     }
 356     arglist = FcStrListCreate (args);
 357     if (!arglist)
 358     {
 359         fprintf (stderr, "%s: malloc failure\n", argv[0]);
 360         return 1;
 361     }
 362
 363     while ((arg = FcStrListNext (arglist)))
 364     {
 365         int         j;
 366         FcChar8     *cache_file = NULL;
 367         struct stat file_stat;
 368
 369         if (FcFileIsDir (arg))
 370             cache = FcDirCacheLoad (arg, config, &cache_file);
 371         else
 372             cache = FcDirCacheLoadFile (arg, &file_stat);
 373         if (!cache)
 374         {
 375             perror ((char *) arg);
 376             ret++;
 377             continue;
 378         }
 379
 380         dirs = FcStrSetCreate ();
 381         fs = FcCacheCopySet (cache);
 382         for (j = 0; j < FcCacheNumSubdir (cache); j++)
 383         {
 384             FcStrSetAdd (dirs, FcCacheSubdir (cache, j));
 385             if (recurse)
 386                 FcStrSetAdd (args, FcCacheSubdir (cache, j));
 387         }
 388
 389         if (verbose)
 390         {
 391             if (!first)
 392                 printf ("\n");
 393             printf ("Directory: %s\nCache: %s\n--------\n",
 394                     FcCacheDir(cache), cache_file ? cache_file : arg);
 395             first = FcFalse;
 396         }
 397         cache_print_set (fs, dirs, FcCacheDir (cache), verbose);
 398
 399         FcStrSetDestroy (dirs);
 400
 401         FcFontSetDestroy (fs);
 402         FcDirCacheUnload (cache);
 403         if (cache_file)
 404             FcStrFree (cache_file);
 405     }
 406
 407     FcFini ();
 408     return 0;
 409 }