src/fcdir.c

   1 /*
   2  * $RCSId: xc/lib/fontconfig/src/fcdir.c,v 1.9 2002/08/31 22:17:32 keithp Exp $
   3  *
   4  * Copyright © 2000 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 "fcint.h"
  26 #include <dirent.h>
  27
  28 static FcBool
  29 FcFileIsDir (const FcChar8 *file)
  30 {
  31     struct stat     statb;
  32
  33     if (stat ((const char *) file, &statb) != 0)
  34         return FcFalse;
  35     return S_ISDIR(statb.st_mode);
  36 }
  37
  38 FcBool
  39 FcFileScanConfig (FcFontSet     *set,
  40                   FcStrSet      *dirs,
  41                   FcGlobalCache *cache,
  42                   FcBlanks      *blanks,
  43                   const FcChar8 *file,
  44                   FcBool        force,
  45                   FcConfig      *config)
  46 {
  47     int                 id;
  48     FcChar8             *name;
  49     FcPattern           *font;
  50     FcBool              ret = FcTrue;
  51     FcBool              isDir;
  52     int                 count = 0;
  53     FcGlobalCacheFile   *cache_file;
  54     FcGlobalCacheDir    *cache_dir;
  55     FcBool              need_scan;
  56
  57     if (config && !FcConfigAcceptFilename (config, file))
  58         return FcTrue;
  59
  60     if (force)
  61         cache = 0;
  62     id = 0;
  63     do
  64     {
  65         need_scan = FcTrue;
  66         font = 0;
  67         /*
  68          * Check the cache
  69          */
  70         if (cache)
  71         {
  72             if ((cache_file = FcGlobalCacheFileGet (cache, file, id, &count)))
  73             {
  74                 /*
  75                  * Found a cache entry for the file
  76                  */
  77                 if (FcGlobalCacheCheckTime (file, &cache_file->info))
  78                 {
  79                     name = cache_file->name;
  80                     need_scan = FcFalse;
  81                     FcGlobalCacheReferenced (cache, &cache_file->info);
  82                     /* "." means the file doesn't contain a font */
  83                     if (FcStrCmp (name, FC_FONT_FILE_INVALID) != 0)
  84                     {
  85                         font = FcNameParse (name);
  86                         if (font)
  87                             if (!FcPatternAddString (font, FC_FILE, file))
  88                                 ret = FcFalse;
  89                     }
  90                 }
  91             }
  92             else if ((cache_dir = FcGlobalCacheDirGet (cache, file,
  93                                                        strlen ((const char *) file),
  94                                                        FcFalse)))
  95             {
  96                 if (FcGlobalCacheCheckTime (cache_dir->info.file,
  97                                             &cache_dir->info))
  98                 {
  99                     font = 0;
 100                     need_scan = FcFalse;
 101                     FcGlobalCacheReferenced (cache, &cache_dir->info);
 102                     if (!FcStrSetAdd (dirs, file))
 103                         ret = FcFalse;
 104                 }
 105             }
 106         }
 107         /*
 108          * Nothing in the cache, scan the file
 109          */
 110         if (need_scan)
 111         {
 112             if (FcDebug () & FC_DBG_SCAN)
 113             {
 114                 printf ("\tScanning file %s...", file);
 115                 fflush (stdout);
 116             }
 117             font = FcFreeTypeQuery (file, id, blanks, &count);
 118             if (FcDebug () & FC_DBG_SCAN)
 119                 printf ("done\n");
 120             isDir = FcFalse;
 121             if (!font && FcFileIsDir (file))
 122             {
 123                 isDir = FcTrue;
 124                 ret = FcStrSetAdd (dirs, file);
 125             }
 126             /*
 127              * Update the cache
 128              */
 129             if (cache && font)
 130             {
 131                 FcChar8 *unparse;
 132
 133                 unparse = FcNameUnparse (font);
 134                 if (unparse)
 135                 {
 136                     (void) FcGlobalCacheUpdate (cache, file, id, unparse);
 137                     FcStrFree (unparse);
 138                 }
 139             }
 140         }
 141         /*
 142          * Add the font
 143          */
 144         if (font && (!config || FcConfigAcceptFont (config, font)))
 145         {
 146             if (!FcFontSetAdd (set, font))
 147             {
 148                 FcPatternDestroy (font);
 149                 font = 0;
 150                 ret = FcFalse;
 151             }
 152         }
 153         id++;
 154     } while (font && ret && id < count);
 155     return ret;
 156 }
 157
 158 FcBool
 159 FcFileScan (FcFontSet       *set,
 160             FcStrSet        *dirs,
 161             FcGlobalCache   *cache,
 162             FcBlanks        *blanks,
 163             const FcChar8   *file,
 164             FcBool          force)
 165 {
 166     return FcFileScanConfig (set, dirs, cache, blanks, file, force, 0);
 167 }
 168
 169 #define FC_MAX_FILE_LEN     4096
 170
 171 /*
 172  * Scan 'dir', adding font files to 'set' and
 173  * subdirectories to 'dirs'
 174  */
 175
 176 FcBool
 177 FcDirScanConfig (FcFontSet      *set,
 178                  FcStrSet       *dirs,
 179                  FcGlobalCache  *cache,
 180                  FcBlanks       *blanks,
 181                  const FcChar8  *dir,
 182                  FcBool         force,
 183                  FcConfig       *config)
 184 {
 185     DIR                 *d;
 186     struct dirent       *e;
 187     FcChar8             *file;
 188     FcChar8             *base;
 189     FcBool              ret = FcTrue;
 190
 191     if (config && !FcConfigAcceptFilename (config, dir))
 192         return FcTrue;
 193
 194     if (!force)
 195     {
 196         /*
 197          * Check fonts.cache-<version> file
 198          */
 199         if (FcDirCacheReadDir (set, dirs, dir, config))
 200         {
 201             if (cache)
 202                 FcGlobalCacheReferenceSubdir (cache, dir);
 203             return FcTrue;
 204         }
 205
 206         /*
 207          * Check ~/.fonts.cache-<version> file
 208          */
 209         if (cache && FcGlobalCacheScanDir (set, dirs, cache, dir, config))
 210             return FcTrue;
 211     }
 212
 213     /* freed below */
 214     file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
 215     if (!file)
 216         return FcFalse;
 217
 218     strcpy ((char *) file, (char *) dir);
 219     strcat ((char *) file, "/");
 220     base = file + strlen ((char *) file);
 221
 222     if (FcDebug () & FC_DBG_SCAN)
 223         printf ("\tScanning dir %s\n", dir);
 224
 225     d = opendir ((char *) dir);
 226
 227     if (!d)
 228     {
 229         free (file);
 230         /* Don't complain about missing directories */
 231         if (errno == ENOENT)
 232             return FcTrue;
 233         return FcFalse;
 234     }
 235     while (ret && (e = readdir (d)))
 236     {
 237         if (e->d_name[0] != '.' && strlen (e->d_name) < FC_MAX_FILE_LEN)
 238         {
 239             strcpy ((char *) base, (char *) e->d_name);
 240             ret = FcFileScanConfig (set, dirs, cache, blanks, file, force, config);
 241         }
 242     }
 243     free (file);
 244     closedir (d);
 245     /*
 246      * Now that the directory has been scanned,
 247      * add the cache entry
 248      */
 249     if (ret && cache)
 250         FcGlobalCacheUpdate (cache, dir, 0, 0);
 251
 252     return ret;
 253 }
 254
 255 FcBool
 256 FcDirScan (FcFontSet        *set,
 257            FcStrSet         *dirs,
 258            FcGlobalCache    *cache,
 259            FcBlanks         *blanks,
 260            const FcChar8    *dir,
 261            FcBool           force)
 262 {
 263     return FcDirScanConfig (set, dirs, cache, blanks, dir, force, 0);
 264 }
 265
 266 FcBool
 267 FcDirSave (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
 268 {
 269     return FcDirCacheWriteDir (set, dirs, dir);
 270 }