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             }
 121             /*
 122              * Update the cache
 123              */
 124             if (cache && font)
 125             {
 126                 FcChar8 *unparse;
 127
 128                 unparse = FcNameUnparse (font);
 129                 if (unparse)
 130                 {
 131                     (void) FcGlobalCacheUpdate (cache, file, id, unparse);
 132                     FcStrFree (unparse);
 133                 }
 134             }
 135         }
 136         /*
 137          * Add the font
 138          */
 139         if (font)
 140         {
 141             if (!FcFontSetAdd (set, font))
 142             {
 143                 FcPatternDestroy (font);
 144                 font = 0;
 145                 ret = FcFalse;
 146             }
 147         }
 148         id++;
 149     } while (font && ret && id < count);
 150     return ret;
 151 }
 152
 153 #define FC_MAX_FILE_LEN     4096
 154
 155 /*
 156  * Scan 'dir', adding font files to 'set' and
 157  * subdirectories to 'dirs'
 158  */
 159
 160 FcBool
 161 FcDirScan (FcFontSet        *set,
 162            FcStrSet         *dirs,
 163            FcGlobalCache    *cache,
 164            FcBlanks         *blanks,
 165            const FcChar8    *dir,
 166            FcBool           force)
 167 {
 168     DIR                 *d;
 169     struct dirent       *e;
 170     FcChar8             *file;
 171     FcChar8             *base;
 172     FcBool              ret = FcTrue;
 173
 174     if (!force)
 175     {
 176         /*
 177          * Check fonts.cache-<version> file
 178          */
 179         if (FcDirCacheReadDir (set, dirs, dir))
 180             return FcTrue;
 181
 182         /*
 183          * Check ~/.fonts.cache-<version> file
 184          */
 185         if (cache && FcGlobalCacheScanDir (set, dirs, cache, dir))
 186             return FcTrue;
 187     }
 188
 189     /* freed below */
 190     file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
 191     if (!file)
 192         return FcFalse;
 193
 194     strcpy ((char *) file, (char *) dir);
 195     strcat ((char *) file, "/");
 196     base = file + strlen ((char *) file);
 197
 198     d = opendir ((char *) dir);
 199
 200     if (!d)
 201     {
 202         free (file);
 203         /* Don't complain about missing directories */
 204         if (errno == ENOENT)
 205             return FcTrue;
 206         return FcFalse;
 207     }
 208     while (ret && (e = readdir (d)))
 209     {
 210         if (e->d_name[0] != '.' && strlen (e->d_name) < FC_MAX_FILE_LEN)
 211         {
 212             strcpy ((char *) base, (char *) e->d_name);
 213             ret = FcFileScan (set, dirs, cache, blanks, file, force);
 214         }
 215     }
 216     free (file);
 217     closedir (d);
 218     /*
 219      * Now that the directory has been scanned,
 220      * add the cache entry
 221      */
 222     if (ret && cache)
 223         FcGlobalCacheUpdate (cache, dir, 0, 0);
 224
 225     return ret;
 226 }
 227
 228 FcBool
 229 FcDirSave (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
 230 {
 231     return FcDirCacheWriteDir (set, dirs, dir);
 232 }