1 files changed, 55 insertions, 0 deletions
diff --git a/librdfa/language.c b/librdfa/language.c
new file mode 100644
index 0000000..daa2daf
--- /dev/null
+++ b/librdfa/language.c
@@ -0,0 +1,55 @@
+/**
+ * Copyright 2008 Digital Bazaar, Inc.
+ *
+ * This file is part of librdfa.
+ * 
+ * librdfa is Free Software, and can be licensed under any of the
+ * following three licenses:
+ * 
+ *   1. GNU Lesser General Public License (LGPL) V2.1 or any 
+ *      newer version
+ *   2. GNU General Public License (GPL) V2 or any newer version
+ *   3. Apache License, V2.0 or any newer version
+ * 
+ * You may not use this file except in compliance with at least one of
+ * the above three licenses.
+ * 
+ * See LICENSE-* at the top of this software distribution for more
+ * information regarding the details of each license.
+ *
+ * The language module is used to determine and set the current language.
+ */
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "rdfa_utils.h"
+#include "rdfa.h"
+
+/**
+ * Updates the language given the value of the xml:lang attribute.
+ *
+ * @param lang the new value of the lang attribute.
+ */
+void rdfa_update_language(rdfacontext* context, const char* lang)
+{
+   /* the [current element] is parsed for any language information,
+    * and [language] is set in the [current evaluation context]; */
+   if(lang != NULL)   
+   {
+      if(strlen(lang) > 0)
+      {
+         /* if a language was specified, set it */
+         context->language = rdfa_replace_string(context->language, lang);
+      }
+      else
+      {
+         /* if a blank language was specified, clear the language context */
+         free(context->language);
+         context->language = NULL;
+      }
+   }
+}