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/*!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 lastof.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "utf8.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
/* utf8.lastof(s, pattern, plain)
*/
tb_int_t xm_utf8_lastof(lua_State *lua) {
size_t len;
tb_char_t const* s = luaL_checklstring(lua, 1, &len);
size_t sublen;
tb_char_t const* sub = luaL_checklstring(lua, 2, &sublen);
tb_int_t plain = lua_toboolean(lua, 3);
tb_long_t byte_pos = 0;
if (plain) {
byte_pos = xm_utf8_lastof_impl(s, len, sub, sublen);
} else {
lua_getglobal(lua, "string");
lua_getfield(lua, -1, "lastof");
lua_pushvalue(lua, 1); // s
lua_pushvalue(lua, 2); // pattern
lua_pushboolean(lua, 0); // plain = false
lua_call(lua, 3, 1);
if (!lua_isnil(lua, -1)) {
byte_pos = (tb_long_t)lua_tointeger(lua, -1);
}
}
if (byte_pos > 0) {
tb_long_t char_pos = xm_utf8_charpos(s, len, byte_pos);
if (char_pos > 0) {
lua_pushinteger(lua, char_pos);
return 1;
}
}
lua_pushnil(lua);
return 1;
}
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