Add filename-based accept/reject to ammend available fonts.

[fontconfig.git] / src / fccfg.c

diff --git a/src/fccfg.c b/src/fccfg.c
index 238edd3a1fc9150d0d0508adce4d457035913a0d..3684d790f6011378baafa0f99ebaa99f2b23429b 100644 (file)
--- a/src/fccfg.c
+++ b/src/fccfg.c
@@ -55,10 +55,18 @@ FcConfigCreate (void)
     if (!config->fontDirs)
        goto bail3;
     
+    config->acceptGlobs = FcStrSetCreate ();
+    if (!config->acceptGlobs)
+       goto bail4;
+
+    config->rejectGlobs = FcStrSetCreate ();
+    if (!config->rejectGlobs)
+       goto bail5;
+
     config->cache = 0;
     if (FcConfigHome())
        if (!FcConfigSetCache (config, (FcChar8 *) ("~/" FC_USER_CACHE_FILE)))
-           goto bail4;
+           goto bail6;
 
     config->blanks = 0;
 
@@ -73,6 +81,10 @@ FcConfigCreate (void)
     
     return config;
 
+bail6:
+    FcStrSetDestroy (config->rejectGlobs);
+bail5:
+    FcStrSetDestroy (config->acceptGlobs);
 bail4:
     FcStrSetDestroy (config->fontDirs);
 bail3:
@@ -159,6 +171,8 @@ FcConfigDestroy (FcConfig *config)
     FcStrSetDestroy (config->configDirs);
     FcStrSetDestroy (config->fontDirs);
     FcStrSetDestroy (config->configFiles);
+    FcStrSetDestroy (config->acceptGlobs);
+    FcStrSetDestroy (config->rejectGlobs);
 
     FcStrFree (config->cache);
 
@@ -203,7 +217,8 @@ FcConfigBuildFonts (FcConfig *config)
     {
        if (FcDebug () & FC_DBG_FONTSET)
            printf ("scan dir %s\n", dir);
-       FcDirScan (fonts, config->fontDirs, cache, config->blanks, dir, FcFalse);
+       FcDirScanConfig (fonts, config->fontDirs, cache, 
+                        config->blanks, dir, FcFalse, config);
     }
     
     FcStrListDone (list);
@@ -1620,7 +1635,7 @@ FcConfigAppFontAddFile (FcConfig    *config,
        FcConfigSetFonts (config, set, FcSetApplication);
     }
        
-    if (!FcFileScan (set, subdirs, 0, config->blanks, file, FcFalse))
+    if (!FcFileScanConfig (set, subdirs, 0, config->blanks, file, FcFalse, config))
     {
        FcStrSetDestroy (subdirs);
        return FcFalse;
@@ -1667,7 +1682,7 @@ FcConfigAppFontAddDir (FcConfig       *config,
        FcConfigSetFonts (config, set, FcSetApplication);
     }
     
-    if (!FcDirScan (set, subdirs, 0, config->blanks, dir, FcFalse))
+    if (!FcDirScanConfig (set, subdirs, 0, config->blanks, dir, FcFalse, config))
     {
        FcStrSetDestroy (subdirs);
        return FcFalse;
@@ -1688,3 +1703,76 @@ FcConfigAppFontClear (FcConfig       *config)
 {
     FcConfigSetFonts (config, 0, FcSetApplication);
 }
+
+/*
+ * Manage filename-based font source selectors
+ */
+
+FcBool
+FcConfigGlobAdd (FcConfig      *config,
+                const FcChar8  *glob,
+                FcBool         accept)
+{
+    FcStrSet   *set = accept ? config->acceptGlobs : config->rejectGlobs;
+
+    return FcStrSetAdd (set, glob);
+}
+
+static FcBool
+FcConfigGlobMatch (const FcChar8    *glob,
+                  const FcChar8    *string)
+{
+    FcChar8    c;
+
+    while ((c = *glob++)) 
+    {
+       switch (c) {
+       case '*':
+           /* short circuit common case */
+           if (!*glob)
+               return FcTrue;
+           /* short circuit another common case */
+           if (strchr ((char *) glob, '*') == 0)
+               string += strlen ((char *) string) - strlen ((char *) glob);
+           while (*string)
+           {
+               if (FcConfigGlobMatch (glob, string))
+                   return FcTrue;
+               string++;
+           }
+           return FcFalse;
+       case '?':
+           if (*string++ == '\0')
+               return FcFalse;
+           break;
+       default:
+           if (*string++ != c)
+               return FcFalse;
+           break;
+       }
+    }
+    return *string == '\0';
+}
+
+static FcBool
+FcConfigGlobsMatch (const FcStrSet     *globs,
+                   const FcChar8       *string)
+{
+    int        i;
+
+    for (i = 0; i < globs->num; i++)
+       if (FcConfigGlobMatch (globs->strs[i], string))
+           return FcTrue;
+    return FcFalse;
+}
+
+FcBool
+FcConfigAcceptFilename (FcConfig       *config,
+                       const FcChar8   *filename)
+{
+    if (FcConfigGlobsMatch (config->acceptGlobs, filename))
+       return FcTrue;
+    if (FcConfigGlobsMatch (config->rejectGlobs, filename))
+       return FcFalse;
+    return FcTrue;
+}