X-Git-Url: https://git.wh0rd.org/?a=blobdiff_plain;f=src%2Ffclang.c;h=be42b58c4694f54747c395ab28011a490a7a4dbc;hb=HEAD;hp=61c4da6615eff6a58a173ac1493323355298c2bf;hpb=8480c6f86327877fce729ebb01b52bd7a40ddfc5;p=fontconfig.git

diff --git a/src/fclang.c b/src/fclang.c
index 61c4da6..be42b58 100644
--- a/src/fclang.c
+++ b/src/fclang.c
@@ -7,9 +7,9 @@
  * documentation for any purpose is hereby granted without fee, provided that
  * the above copyright notice appear in all copies and that both that
  * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of Keith Packard not be used in
+ * documentation, and that the name of the author(s) not be used in
  * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission.  Keith Packard makes no
+ * specific, written prior permission.  The authors make no
  * representations about the suitability of this software for any purpose.  It
  * is provided "as is" without express or implied warranty.
  *
@@ -71,8 +71,22 @@ FcLangSetBitGet (const FcLangSet *ls,
   return ((ls->map[bucket] >> (id & 0x1f)) & 1) ? FcTrue : FcFalse;
 }
 
+static void
+FcLangSetBitReset (FcLangSet    *ls,
+		   unsigned int  id)
+{
+  int bucket;
+
+  id = fcLangCharSetIndices[id];
+  bucket = id >> 5;
+  if (bucket >= ls->map_size)
+    return; /* shouldn't happen really */
+
+  ls->map[bucket] &= ~((FcChar32) 1 << (id & 0x1f));
+}
+
 FcLangSet *
-FcFreeTypeLangSet (const FcCharSet  *charset, 
+FcFreeTypeLangSet (const FcCharSet  *charset,
 		   const FcChar8    *exclusiveLang)
 {
     int		    i, j;
@@ -85,7 +99,7 @@ FcFreeTypeLangSet (const FcCharSet  *charset,
     ls = FcLangSetCreate ();
     if (!ls)
 	return 0;
-    if (FcDebug() & FC_DBG_LANGSET) 
+    if (FcDebug() & FC_DBG_LANGSET)
     {
 	printf ("font charset");
 	FcCharSetPrint (charset);
@@ -93,7 +107,7 @@ FcFreeTypeLangSet (const FcCharSet  *charset,
     }
     for (i = 0; i < NUM_LANG_CHAR_SET; i++)
     {
-	if (FcDebug() & FC_DBG_LANGSET) 
+	if (FcDebug() & FC_DBG_LANGSET)
 	{
 	    printf ("%s charset", fcLangCharSets[i].lang);
 	    FcCharSetPrint (&fcLangCharSets[i].charset);
@@ -112,7 +126,7 @@ FcFreeTypeLangSet (const FcCharSet  *charset,
 		continue;
 
 	    for (j = 0; j < fcLangCharSets[i].charset.num; j++)
-		if (FcCharSetLeaf(&fcLangCharSets[i].charset, j) != 
+		if (FcCharSetLeaf(&fcLangCharSets[i].charset, j) !=
 		    FcCharSetLeaf(exclusiveCharset, j))
 		    continue;
 	}
@@ -121,7 +135,7 @@ FcFreeTypeLangSet (const FcCharSet  *charset,
 	{
 	    if (missing && missing < 10)
 	    {
-		FcCharSet   *missed = FcCharSetSubtract (&fcLangCharSets[i].charset, 
+		FcCharSet   *missed = FcCharSetSubtract (&fcLangCharSets[i].charset,
 							 charset);
 		FcChar32    ucs4;
 		FcChar32    map[FC_CHARSET_MAP_SIZE];
@@ -154,8 +168,8 @@ FcFreeTypeLangSet (const FcCharSet  *charset,
 
     if (FcDebug() & FC_DBG_SCANV)
 	printf ("\n");
-    
-    
+
+
     return ls;
 }
 
@@ -188,7 +202,7 @@ FcLangCompare (const FcChar8 *s1, const FcChar8 *s2)
 }
 
 /*
- * Return FcTrue when super contains sub. 
+ * Return FcTrue when super contains sub.
  *
  * super contains sub if super and sub have the same
  * language and either the same country or one
@@ -329,9 +343,9 @@ FcLangSetIndex (const FcChar8 *lang)
 {
     int	    low, high, mid = 0;
     int	    cmp = 0;
-    FcChar8 firstChar = FcToLower(lang[0]); 
+    FcChar8 firstChar = FcToLower(lang[0]);
     FcChar8 secondChar = firstChar ? FcToLower(lang[1]) : '\0';
-    
+
     if (firstChar < 'a')
     {
 	low = 0;
@@ -360,11 +374,11 @@ FcLangSetIndex (const FcChar8 *lang)
 	{   /* fast path for resolving 2-letter languages (by far the most common) after
 	     * finding the first char (probably already true because of the hash table) */
 	    cmp = fcLangCharSets[mid].lang[1] - secondChar;
-	    if (cmp == 0 && 
-		(fcLangCharSets[mid].lang[2] != '\0' || 
+	    if (cmp == 0 &&
+		(fcLangCharSets[mid].lang[2] != '\0' ||
 		 lang[2] != '\0'))
 	    {
-		cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang+2, 
+		cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang+2,
 					 lang+2);
 	    }
 	}
@@ -400,6 +414,23 @@ FcLangSetAdd (FcLangSet *ls, const FcChar8 *lang)
     return FcStrSetAdd (ls->extra, lang);
 }
 
+FcBool
+FcLangSetDel (FcLangSet *ls, const FcChar8 *lang)
+{
+    int	id;
+
+    id = FcLangSetIndex (lang);
+    if (id >= 0)
+    {
+	FcLangSetBitReset (ls, id);
+    }
+    else if (ls->extra)
+    {
+	FcStrSetDel (ls->extra, lang);
+    }
+    return FcTrue;
+}
+
 FcLangResult
 FcLangSetHasLang (const FcLangSet *ls, const FcChar8 *lang)
 {
@@ -505,6 +536,7 @@ FcLangSetCompare (const FcLangSet *lsa, const FcLangSet *lsb)
 
 /*
  * Used in computing values -- mustn't allocate any storage
+ * XXX Not thread-safe
  */
 FcLangSet *
 FcLangSetPromote (const FcChar8 *lang)
@@ -515,6 +547,7 @@ FcLangSetPromote (const FcChar8 *lang)
     int			id;
 
     memset (ls.map, '\0', sizeof (ls.map));
+    ls.map_size = NUM_LANG_SET_MAP;
     ls.extra = 0;
     id = FcLangSetIndex (lang);
     if (id > 0)
@@ -537,9 +570,10 @@ FcChar32
 FcLangSetHash (const FcLangSet *ls)
 {
     FcChar32	h = 0;
-    int		i;
+    int		i, count;
 
-    for (i = 0; i < ls->map_size; i++)
+    count = FC_MIN (ls->map_size, NUM_LANG_SET_MAP);
+    for (i = 0; i < count; i++)
 	h ^= ls->map[i];
     if (ls->extra)
 	h ^= ls->extra->num;
@@ -726,7 +760,7 @@ FcLangSetContains (const FcLangSet *lsa, const FcLangSet *lsb)
 	if (missing)
 	{
 	    for (j = 0; j < 32; j++)
-		if (missing & (1 << j)) 
+		if (missing & (1 << j))
 		{
 		    if (!FcLangSetContainsLang (lsa,
 						fcLangCharSets[fcLangCharSetIndicesInv[i*32 + j]].lang))
@@ -777,7 +811,9 @@ FcLangSetSerialize(FcSerialize *serialize, const FcLangSet *l)
 
     if (!l_serialize)
 	return NULL;
-    *l_serialize = *l;
+    memset (l_serialize->map, '\0', sizeof (l_serialize->map));
+    memcpy (l_serialize->map, l->map, FC_MIN (sizeof (l_serialize->map), l->map_size * sizeof (l->map[0])));
+    l_serialize->map_size = NUM_LANG_SET_MAP;
     l_serialize->extra = NULL; /* We don't serialize ls->extra */
     return l_serialize;
 }
@@ -813,6 +849,37 @@ FcLangSetGetLangs (const FcLangSet *ls)
     return langs;
 }
 
+static FcLangSet *
+FcLangSetOperate(const FcLangSet	*a,
+		 const FcLangSet	*b,
+		 FcBool			(*func) (FcLangSet 	*ls,
+						 const FcChar8	*s))
+{
+    FcLangSet	*langset = FcLangSetCopy (a);
+    FcStrList	*sl = FcStrListCreate (FcLangSetGetLangs (b));
+    FcChar8	*str;
+
+    while ((str = FcStrListNext (sl)))
+    {
+	func (langset, str);
+    }
+    FcStrListDone (sl);
+
+    return langset;
+}
+
+FcLangSet *
+FcLangSetUnion (const FcLangSet *a, const FcLangSet *b)
+{
+    return FcLangSetOperate(a, b, FcLangSetAdd);
+}
+
+FcLangSet *
+FcLangSetSubtract (const FcLangSet *a, const FcLangSet *b)
+{
+    return FcLangSetOperate(a, b, FcLangSetDel);
+}
+
 #define __fclang__
 #include "fcaliastail.h"
 #include "fcftaliastail.h"