add utf8.width

1 files changed, 45 insertions, 0 deletions

diff --git a/core/src/xmake/utf8/width.c b/core/src/xmake/utf8/width.c
new file mode 100644
index 000000000..615572462
--- /dev/null
+++ b/core/src/xmake/utf8/width.c
@@ -0,0 +1,45 @@
+/*!A cross-platform build utility based on Lua
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Copyright (C) 2015-present, Xmake Open Source Community.
+ *
+ * @author      ruki
+ * @file        width.c
+ *
+ */
+
+/* //////////////////////////////////////////////////////////////////////////////////////
+ * includes
+ */
+#include "utf8.h"
+
+/* //////////////////////////////////////////////////////////////////////////////////////
+ * interfaces
+ */
+
+/* utf8.width(char)
+ * utf8.width(str)
+ * utf8.width(codepoint)
+ */
+tb_int_t xm_utf8_width(lua_State* lua) {
+    if (lua_isnumber(lua, 1)) {
+        xm_utf8_int_t val = (xm_utf8_int_t)lua_tointeger(lua, 1);
+        lua_pushinteger(lua, xm_utf8_charwidth(val));
+    } else {
+        size_t len = 0;
+        tb_char_t const* s = luaL_checklstring(lua, 1, &len);
+        lua_pushinteger(lua, xm_utf8_strwidth(s, len));
+    }
+    return 1;
+}