From d62b85af21777582ad720efd9c319fde97b67d82 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 13 Feb 2009 16:30:43 -0800
Subject: [PATCH] [fclang] Implement FcLangSetGetLangs() (#18846)

---
 doc/fclangset.fncs      |  8 ++++++++
 fontconfig/fontconfig.h |  3 +++
 src/fclang.c            | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/doc/fclangset.fncs b/doc/fclangset.fncs
index 3f69f0d..f9d578e 100644
--- a/doc/fclangset.fncs
+++ b/doc/fclangset.fncs
@@ -123,6 +123,14 @@ function returns FcLangDiffentTerritory. If <parameter>ls</parameter>
 has no matching language, this function returns FcLangDifferentLang.
 @@
 
+@RET@		FcStrSet *
+@FUNC@		FcLangSetGetLangs
+@TYPE1@		const FcLangSet *		@ARG1@		ls
+@PURPOSE@	get the list of languages in the langset
+@DESC@
+Returns a string set of all languages in <parameter>langset</parameter>.
+@@
+
 @RET@		FcStrSet *
 @FUNC@		FcGetLangs
 @TYPE1@		void
diff --git a/fontconfig/fontconfig.h b/fontconfig/fontconfig.h
index 99e2f04..54dedac 100644
--- a/fontconfig/fontconfig.h
+++ b/fontconfig/fontconfig.h
@@ -597,6 +597,9 @@ FcLangSetEqual (const FcLangSet *lsa, const FcLangSet *lsb);
 FcPublic FcChar32
 FcLangSetHash (const FcLangSet *ls);
 
+FcPublic FcStrSet *
+FcLangSetGetLangs (const FcLangSet *ls);
+
 /* fclist.c */
 FcPublic FcObjectSet *
 FcObjectSetCreate (void);
diff --git a/src/fclang.c b/src/fclang.c
index 2553336..d5afd52 100644
--- a/src/fclang.c
+++ b/src/fclang.c
@@ -744,6 +744,38 @@ FcLangSetSerialize(FcSerialize *serialize, const FcLangSet *l)
     *l_serialize = *l;
     return l_serialize;
 }
+
+FcStrSet *
+FcLangSetGetLangs (const FcLangSet *ls)
+{
+    FcStrSet *langs;
+    int	      i;
+
+    langs = FcStrSetCreate();
+    if (!langs)
+	return 0;
+
+    for (i = 0; i < NUM_LANG_CHAR_SET; i++)
+	if (FcLangSetBitGet (ls, i))
+	    FcStrSetAdd (langs, fcLangCharSets[i].lang);
+
+    if (ls->extra)
+    {
+	FcStrList	*list = FcStrListCreate (ls->extra);
+	FcChar8		*extra;
+
+	if (list)
+	{
+	    while ((extra = FcStrListNext (list)))
+		FcStrSetAdd (langs, extra);
+
+	    FcStrListDone (list);
+	}
+    }
+
+    return langs;
+}
+
 #define __fclang__
 #include "fcaliastail.h"
 #include "fcftaliastail.h"