src/fcdir.c

   1 /*
   2  * $XFree86: xc/lib/fontconfig/src/fcdir.c,v 1.9 2002/08/31 22:17:32 keithp Exp $
   3  *
   4  * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
   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 FcFileScan (FcFontSet       *set,
  40             FcStrSet        *dirs,
  41             FcGlobalCache   *cache,
  42             FcBlanks        *blanks,
  43             const FcChar8   *file,
  44             FcBool          force)
  45 {
  46     int                 id;
  47     FcChar8             *name;
  48     FcPattern           *font;
  49     FcBool              ret = FcTrue;
  50     FcBool              isDir;
  51     int                 count = 0;
  52     FcGlobalCacheFile   *cache_file;
  53     FcGlobalCacheDir    *cache_dir;
  54     FcBool              need_scan;
  55
  56     if (force)
  57         cache = 0;
  58     id = 0;
  59     do
  60     {
  61         need_scan = FcTrue;
  62         font = 0;
  63         /*
  64          * Check the cache
  65          */
  66         if (cache)
  67         {
  68             if ((cache_file = FcGlobalCacheFileGet (cache, file, id, &count)))
  69             {
  70                 /*
  71                  * Found a cache entry for the file
  72                  */
  73                 if (FcGlobalCacheCheckTime (&cache_file->info))
  74                 {
  75                     name = cache_file->name;
  76                     need_scan = FcFalse;
  77                     FcGlobalCacheReferenced (cache, &cache_file->info);
  78                     /* "." means the file doesn't contain a font */
  79                     if (FcStrCmp (name, FC_FONT_FILE_INVALID) != 0)
  80                     {
  81                         font = FcNameParse (name);
  82                         if (font)
  83                             if (!FcPatternAddString (font, FC_FILE, file))
  84                                 ret = FcFalse;
  85                     }
  86                 }
  87             }
  88             else if ((cache_dir = FcGlobalCacheDirGet (cache, file,
  89                                                        strlen ((const char *) file),
  90                                                        FcFalse)))
  91             {
  92                 if (FcGlobalCacheCheckTime (&cache_dir->info))
  93                 {
  94                     font = 0;
  95                     need_scan = FcFalse;
  96                     FcGlobalCacheReferenced (cache, &cache_dir->info);
  97                     if (!FcStrSetAdd (dirs, file))
  98                         ret = FcFalse;
  99                 }
 100             }
 101         }
 102         /*
 103          * Nothing in the cache, scan the file
 104          */
 105         if (need_scan)
 106         {
 107             if (FcDebug () & FC_DBG_SCAN)
 108             {
 109                 printf ("\tScanning file %s...", file);
 110                 fflush (stdout);
 111             }
 112             font = FcFreeTypeQuery (file, id, blanks, &count);
 113             if (FcDebug () & FC_DBG_SCAN)
 114                 printf ("done\n");
 115             isDir = FcFalse;
 116             if (!font && FcFileIsDir (file))
 117             {
 118                 isDir = FcTrue;
 119                 ret = FcStrSetAdd (dirs, file);
 120                 if (cache && ret)
 121                     FcGlobalCacheUpdate (cache, file, 0, FC_FONT_FILE_DIR);
 122             }
 123             /*
 124              * Update the cache
 125              */
 126             if (cache && font)
 127             {
 128                 FcChar8 *unparse;
 129
 130                 unparse = FcNameUnparse (font);
 131                 if (unparse)
 132                 {
 133                     (void) FcGlobalCacheUpdate (cache, file, id, unparse);
 134                     FcStrFree (unparse);
 135                 }
 136             }
 137         }
 138         /*
 139          * Add the font
 140          */
 141         if (font)
 142         {
 143             if (!FcFontSetAdd (set, font))
 144             {
 145                 FcPatternDestroy (font);
 146                 font = 0;
 147                 ret = FcFalse;
 148             }
 149         }
 150         id++;
 151     } while (font && ret && id < count);
 152     return ret;
 153 }
 154
 155 #define FC_MAX_FILE_LEN     4096
 156
 157 FcBool
 158 FcDirScan (FcFontSet        *set,
 159            FcStrSet         *dirs,
 160            FcGlobalCache    *cache,
 161            FcBlanks         *blanks,
 162            const FcChar8    *dir,
 163            FcBool           force)
 164 {
 165     DIR                 *d;
 166     struct dirent       *e;
 167     FcChar8             *file;
 168     FcChar8             *base;
 169     FcBool              ret = FcTrue;
 170
 171     if (!force)
 172     {
 173         /*
 174          * Check fonts.cache-<version> file
 175          */
 176         if (FcDirCacheReadDir (set, dirs, dir))
 177             return FcTrue;
 178
 179         /*
 180          * Check ~/.fonts.cache-<version> file
 181          */
 182         if (cache && FcGlobalCacheScanDir (set, dirs, cache, dir))
 183             return FcTrue;
 184     }
 185
 186     /* freed below */
 187     file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
 188     if (!file)
 189         return FcFalse;
 190
 191     strcpy ((char *) file, (char *) dir);
 192     strcat ((char *) file, "/");
 193     base = file + strlen ((char *) file);
 194
 195     d = opendir ((char *) dir);
 196
 197     if (!d)
 198     {
 199         free (file);
 200         /* Don't complain about missing directories */
 201         if (errno == ENOENT)
 202             return FcTrue;
 203         return FcFalse;
 204     }
 205     while (ret && (e = readdir (d)))
 206     {
 207         if (e->d_name[0] != '.' && strlen (e->d_name) < FC_MAX_FILE_LEN)
 208         {
 209             strcpy ((char *) base, (char *) e->d_name);
 210             ret = FcFileScan (set, dirs, cache, blanks, file, force);
 211         }
 212     }
 213     free (file);
 214     closedir (d);
 215     if (ret && cache)
 216         FcGlobalCacheUpdate (cache, dir, 0, 0);
 217
 218     return ret;
 219 }
 220
 221 FcBool
 222 FcDirSave (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
 223 {
 224     return FcDirCacheWriteDir (set, dirs, dir);
 225 }