libwind from Assar. stringprep library supporting nameprep, saslprep and ldapprep

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@22551 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/wind/combining.c

@@ -0,0 +1,29 @@
+#include "windlocl.h"
+
+#include <stdlib.h>
+
+#include "combining_table.h"
+
+static int
+translation_cmp(const void *key, const void *data)
+{
+    const struct translation *t1 = (const struct translation *)key;
+    const struct translation *t2 = (const struct translation *)data;
+
+    return t1->key - t2->key;
+}
+
+int
+_wind_combining_class(uint32_t code_point)
+{
+    struct translation ts = {code_point};
+    void *s = bsearch(&ts, _wind_combining_table, _wind_combining_table_size,
+		      sizeof(_wind_combining_table[0]),
+		      translation_cmp);
+    if (s != NULL) {
+	const struct translation *t = (const struct translation *)s;
+	return t->combining_class;
+    } else {
+	return 0;
+    }
+}