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  * 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 [-rv] [--recurse] [--verbose] [*-%s.cache-2|directory]...\n",
 153              program, FC_ARCHITECTURE);
 154     fprintf (stderr, "       %s [-V?] [--version] [--help]\n", program);
 155 #else
 156     fprintf (stderr, "usage: %s [-rvV?] [*-%s.cache-2|directory]...\n",
 157              program, FC_ARCHITECTURE);
 158 #endif
 159     fprintf (stderr, "Reads font information cache from:\n");
 160     fprintf (stderr, " 1) specified fontconfig cache file\n");
 161     fprintf (stderr, " 2) related to a particular font directory\n");
 162     fprintf (stderr, "\n");
 163 #if HAVE_GETOPT_LONG
 164     fprintf (stderr, "  -r, --recurse        recurse into subdirectories\n");
 165     fprintf (stderr, "  -v, --verbose        be verbose\n");
 166     fprintf (stderr, "  -V, --version        display font config version and exit\n");
 167     fprintf (stderr, "  -?, --help           display this help and exit\n");
 168 #else
 169     fprintf (stderr, "  -r         (recurse) recurse into subdirectories\n");
 170     fprintf (stderr, "  -v         (verbose) be verbose\n");
 171     fprintf (stderr, "  -V         (version) display font config version and exit\n");
 172     fprintf (stderr, "  -?         (help)    display this help and exit\n");
 173 #endif
 174     exit (1);
 175 }
 176
 177 /*
 178  * return the path from the directory containing 'cache' to 'file'
 179  */
 180
 181 static const FcChar8 *
 182 file_base_name (const FcChar8 *cache, const FcChar8 *file)
 183 {
 184     int             cache_len = strlen ((char *) cache);
 185
 186     if (!strncmp ((char *) cache, (char *) file, cache_len) && file[cache_len] == '/')
 187         return file + cache_len + 1;
 188     return file;
 189 }
 190
 191 #define FC_FONT_FILE_DIR        ((FcChar8 *) ".dir")
 192
 193 static FcBool
 194 cache_print_set (FcFontSet *set, FcStrSet *dirs, const FcChar8 *base_name, FcBool verbose)
 195 {
 196     FcChar8         *name, *dir;
 197     const FcChar8   *file, *base;
 198     int             ret;
 199     int             n;
 200     int             id;
 201     int             ndir = 0;
 202     FcStrList       *list;
 203
 204     list = FcStrListCreate (dirs);
 205     if (!list)
 206         goto bail2;
 207
 208     while ((dir = FcStrListNext (list)))
 209     {
 210         base = file_base_name (base_name, dir);
 211         if (!write_string (stdout, base))
 212             goto bail3;
 213         if (PUTC (' ', stdout) == EOF)
 214             goto bail3;
 215         if (!write_int (stdout, 0))
 216             goto bail3;
 217         if (PUTC (' ', stdout) == EOF)
 218             goto bail3;
 219         if (!write_string (stdout, FC_FONT_FILE_DIR))
 220             goto bail3;
 221         if (PUTC ('\n', stdout) == EOF)
 222             goto bail3;
 223         ndir++;
 224     }
 225
 226     for (n = 0; n < set->nfont; n++)
 227     {
 228         FcPattern   *font = set->fonts[n];
 229
 230         if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
 231             goto bail3;
 232         base = file_base_name (base_name, file);
 233         if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
 234             goto bail3;
 235         if (!write_string (stdout, base))
 236             goto bail3;
 237         if (PUTC (' ', stdout) == EOF)
 238             goto bail3;
 239         if (!write_int (stdout, id))
 240             goto bail3;
 241         if (PUTC (' ', stdout) == EOF)
 242             goto bail3;
 243         name = FcNameUnparse (font);
 244         if (!name)
 245             goto bail3;
 246         ret = write_string (stdout, name);
 247         FcStrFree (name);
 248         if (!ret)
 249             goto bail3;
 250         if (PUTC ('\n', stdout) == EOF)
 251             goto bail3;
 252     }
 253     if (verbose && !set->nfont && !ndir)
 254         printf ("<empty>\n");
 255
 256     FcStrListDone (list);
 257
 258     return FcTrue;
 259
 260 bail3:
 261     FcStrListDone (list);
 262 bail2:
 263     return FcFalse;
 264 }
 265
 266 int
 267 main (int argc, char **argv)
 268 {
 269     int         i;
 270     int         ret = 0;
 271     FcFontSet   *fs;
 272     FcStrSet    *dirs;
 273     FcStrSet    *args = NULL;
 274     FcStrList   *arglist;
 275     FcCache     *cache;
 276     FcConfig    *config;
 277     FcChar8     *arg;
 278     int         verbose = 0;
 279     int         recurse = 0;
 280     FcBool      first = FcTrue;
 281 #if HAVE_GETOPT_LONG || HAVE_GETOPT
 282     int         c;
 283
 284 #if HAVE_GETOPT_LONG
 285     while ((c = getopt_long (argc, argv, "Vvr?", longopts, NULL)) != -1)
 286 #else
 287     while ((c = getopt (argc, argv, "Vvr?")) != -1)
 288 #endif
 289     {
 290         switch (c) {
 291         case 'V':
 292             fprintf (stderr, "fontconfig version %d.%d.%d\n",
 293                      FC_MAJOR, FC_MINOR, FC_REVISION);
 294             exit (0);
 295         case 'v':
 296             verbose++;
 297             break;
 298         case 'r':
 299             recurse++;
 300             break;
 301         default:
 302             usage (argv[0]);
 303         }
 304     }
 305     i = optind;
 306 #else
 307     i = 1;
 308 #endif
 309
 310     config = FcInitLoadConfig ();
 311     if (!config)
 312     {
 313         fprintf (stderr, "%s: Can't init font config library\n", argv[0]);
 314         return 1;
 315     }
 316     FcConfigSetCurrent (config);
 317
 318     args = FcStrSetCreate ();
 319     if (!args)
 320     {
 321         fprintf (stderr, "%s: malloc failure\n", argv[0]);
 322         return 1;
 323     }
 324     if (i < argc)
 325     {
 326         for (; i < argc; i++)
 327         {
 328             if (!FcStrSetAddFilename (args, (const FcChar8 *) argv[i]))
 329             {
 330                 fprintf (stderr, "%s: malloc failure\n", argv[0]);
 331                 return 1;
 332             }
 333         }
 334         arglist = FcStrListCreate (args);
 335         if (!arglist)
 336         {
 337             fprintf (stderr, "%s: malloc failure\n", argv[0]);
 338             return 1;
 339         }
 340     }
 341     else
 342     {
 343         recurse++;
 344         arglist = FcConfigGetFontDirs (config);
 345         while ((arg = FcStrListNext (arglist)))
 346             if (!FcStrSetAdd (args, arg))
 347             {
 348                 fprintf (stderr, "%s: malloc failure\n", argv[0]);
 349                 return 1;
 350             }
 351         FcStrListDone (arglist);
 352     }
 353     arglist = FcStrListCreate (args);
 354     if (!arglist)
 355     {
 356         fprintf (stderr, "%s: malloc failure\n", argv[0]);
 357         return 1;
 358     }
 359
 360     while ((arg = FcStrListNext (arglist)))
 361     {
 362         int         j;
 363         FcChar8     *cache_file = NULL;
 364         struct stat file_stat;
 365
 366         if (FcFileIsDir (arg))
 367             cache = FcDirCacheLoad (arg, config, &cache_file);
 368         else
 369             cache = FcDirCacheLoadFile (arg, &file_stat);
 370         if (!cache)
 371         {
 372             perror ((char *) arg);
 373             ret++;
 374             continue;
 375         }
 376
 377         dirs = FcStrSetCreate ();
 378         fs = FcCacheCopySet (cache);
 379         for (j = 0; j < FcCacheNumSubdir (cache); j++)
 380         {
 381             FcStrSetAdd (dirs, FcCacheSubdir (cache, j));
 382             if (recurse)
 383                 FcStrSetAdd (args, FcCacheSubdir (cache, j));
 384         }
 385
 386         if (verbose)
 387         {
 388             if (!first)
 389                 printf ("\n");
 390             printf ("Directory: %s\nCache: %s\n--------\n",
 391                     FcCacheDir(cache), cache_file ? cache_file : arg);
 392             first = FcFalse;
 393         }
 394         cache_print_set (fs, dirs, FcCacheDir (cache), verbose);
 395
 396         FcStrSetDestroy (dirs);
 397
 398         FcFontSetDestroy (fs);
 399         FcDirCacheUnload (cache);
 400         if (cache_file)
 401             FcStrFree (cache_file);
 402     }
 403
 404     return 0;
 405 }