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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 case.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "case"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#include "../utils/charset.h"
#include <wctype.h>
/* //////////////////////////////////////////////////////////////////////////////////////
* helper
*/
static tb_int_t xm_string_case(lua_State* lua, tb_bool_t lower) {
// check
tb_assert_and_check_return_val(lua, 0);
// get the string
size_t size = 0;
tb_char_t const* str = luaL_checklstring(lua, 1, &size);
tb_check_return_val(str, 0);
// empty?
if (!size) {
lua_pushstring(lua, "");
return 1;
}
// find charsets
xm_charset_entry_ref_t fcharset = xm_charset_find_by_name("utf8");
#if defined(TB_CONFIG_OS_WINDOWS)
xm_charset_entry_ref_t tcharset = xm_charset_find_by_name("utf16");
#else
xm_charset_entry_ref_t tcharset = xm_charset_find_by_name("utf32");
#endif
tb_check_return_val(fcharset && tcharset, 0);
// convert string
tb_long_t dst_size = 0;
tb_size_t dst_maxn = (tb_size_t)(size + 1) * 4;
tb_byte_t* dst_data = tb_malloc_bytes(dst_maxn);
if (dst_data && dst_maxn &&
(dst_size = tb_charset_conv_data(fcharset->type, tcharset->type, (tb_byte_t const*)str, (tb_size_t)size, dst_data, dst_maxn)) >= 0 &&
dst_size < dst_maxn) {
// to lower/upper
#if defined(TB_CONFIG_OS_WINDOWS)
tb_uint16_t* p = (tb_uint16_t*)dst_data;
tb_size_t n = (tb_size_t)dst_size / 2;
#else
tb_uint32_t* p = (tb_uint32_t*)dst_data;
tb_size_t n = (tb_size_t)dst_size / 4;
#endif
while (n--) {
*p = (tb_wchar_t)(lower? towlower((wint_t)*p) : towupper((wint_t)*p));
p++;
}
// convert string back
tb_long_t res_size = 0;
tb_size_t res_maxn = dst_maxn * 2;
tb_byte_t* res_data = tb_malloc_bytes(res_maxn);
if (res_data && res_maxn &&
(res_size = tb_charset_conv_data(tcharset->type, fcharset->type, dst_data, (tb_size_t)dst_size, res_data, res_maxn)) >= 0 &&
res_size < res_maxn) {
lua_pushlstring(lua, (tb_char_t const*)res_data, res_size);
} else {
lua_pushnil(lua);
}
if (res_data) tb_free(res_data);
} else {
lua_pushnil(lua);
}
// free data
if (dst_data) tb_free(dst_data);
// ok
return 1;
}
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_string_lower(lua_State* lua) {
return xm_string_case(lua, tb_true);
}
tb_int_t xm_string_upper(lua_State* lua) {
return xm_string_case(lua, tb_false);
}
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