[Minor] Add Lua API for transliterate function

diff --git a/src/lua/lua_util.c b/src/lua/lua_util.c
index 9f06305572c59731d5b7fd0e1f7d69afba94bb9c..39e08c1fb1d36ccfbe9146668e789213ed1dbb2c 100644 (file)
--- a/src/lua/lua_util.c
+++ b/src/lua/lua_util.c
@@ -252,6 +252,15 @@ LUA_FUNCTION_DEF (util, lower_utf8);
  */
 LUA_FUNCTION_DEF (util, normalize_utf8);
 
+
+/***
+ * @function util.transliterate(str)
+ * Converts utf8 encoded string to latin transliteration
+ * @param {string/text} str utf8 encoded string
+ * @return {text} transliterated string
+ */
+LUA_FUNCTION_DEF (util, transliterate);
+
 /***
  * @function util.strequal_caseless(str1, str2)
  * Compares two strings regardless of their case using ascii comparison.
@@ -686,6 +695,7 @@ static const struct luaL_reg utillib_f[] = {
        LUA_INTERFACE_DEF (util, strlen_utf8),
        LUA_INTERFACE_DEF (util, lower_utf8),
        LUA_INTERFACE_DEF (util, normalize_utf8),
+       LUA_INTERFACE_DEF (util, transliterate),
        LUA_INTERFACE_DEF (util, strequal_caseless),
        LUA_INTERFACE_DEF (util, strequal_caseless_utf8),
        LUA_INTERFACE_DEF (util, get_ticks),
@@ -1635,6 +1645,24 @@ lua_util_normalize_utf8 (lua_State *L)
        return 2;
 }
 
+static gint
+lua_util_transliterate (lua_State *L)
+{
+       LUA_TRACE_POINT;
+       struct rspamd_lua_text *t;
+       t = lua_check_text_or_string (L, 1);
+
+       if (!t) {
+               return luaL_error(L, "invalid arguments");
+       }
+
+       gsize outlen;
+       char *transliterated = rspamd_utf8_transliterate(t->start, t->len, &outlen);
+       lua_new_text(L, transliterated, outlen, TRUE);
+
+       return 1;
+}
+
 static gint
 lua_util_strequal_caseless (lua_State *L)
 {