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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 argv.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "os.argv"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_os_argv(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
// get the argument string
tb_char_t const *args = luaL_checkstring(lua, 1);
tb_check_return_val(args, 0);
// split only? do not escape
tb_bool_t splitonly = tb_false;
if (lua_istable(lua, 2)) {
lua_pushstring(lua, "splitonly");
lua_gettable(lua, 2);
splitonly = lua_toboolean(lua, -1);
lua_pop(lua, 1);
}
// parse argument list
tb_string_t arg;
do {
// init table
lua_newtable(lua);
// init arg
if (!tb_string_init(&arg)) {
break;
}
// parse command to the arguments
tb_int_t i = 1;
tb_int_t skip = 0;
tb_int_t escape = 0;
tb_char_t quote = 0;
tb_char_t ch = 0;
tb_char_t const *p = args;
while ((ch = *p)) {
// no escape now?
if (!escape) {
// enter quote?
if (!quote && (ch == '\"' || ch == '\'')) {
quote = ch;
skip = 1;
} else if (ch == quote) { // leave quote?
quote = 0;
skip = 1;
} else if (ch == '\\' && (p[1] == '\\' || p[1] == '\"')) { // escape character? only escape \\ and \"
escape = 1;
skip = 1;
} else if (!quote && tb_isspace(ch)) { // is argument end with ' '?
// save this argument
tb_string_ltrim(&arg);
if (tb_string_size(&arg)) {
// save argument
lua_pushstring(lua, tb_string_cstr(&arg));
lua_rawseti(lua, -2, i++);
}
// clear argument
tb_string_clear(&arg);
}
}
// save this charactor to argument
if (splitonly || !skip) {
tb_string_chrcat(&arg, ch);
}
// step and cancel escape
if (escape == 1) {
escape++;
} else if (escape == 2) {
escape = 0;
}
// clear skip
skip = 0;
// next
p++;
}
// save this argument
tb_string_ltrim(&arg);
if (tb_string_size(&arg)) {
// save argument
lua_pushstring(lua, tb_string_cstr(&arg));
lua_rawseti(lua, -2, i++);
}
} while (0);
// exit arg
tb_string_exit(&arg);
return 1;
}
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