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/*!The Make-like Build Utility based on Lua
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 - 2017, TBOOX Open Source Group.
*
* @author ruki
* @file argv.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "argv"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_os_argv(lua_State* lua)
{
// check
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);
// done
tb_char_t* buffer = tb_null;
do
{
// make buffer
tb_size_t maxn = TB_PATH_MAXN;
buffer = (tb_char_t*)tb_malloc(maxn);
tb_assert_and_check_break(buffer);
// copy and translate command
tb_char_t ch;
tb_size_t i = 0;
tb_size_t j = 0;
for (i = 0; j <= maxn && (ch = args[i]); i++)
{
// not enough? grow it
if (j == maxn)
{
// grow it
maxn += TB_PATH_MAXN;
buffer = (tb_char_t*)tb_ralloc(buffer, maxn);
tb_assert_and_check_break(buffer);
}
// translate "\"", "\'", "\\"
tb_char_t next = args[i + 1];
if (ch == '\\' && (next == '\"' || next == '\'' || next == '\\')) /* skip it */ ;
// copy it
else buffer[j++] = ch;
}
tb_assert_and_check_break(j < maxn);
buffer[j] = '\0';
// reset index
i = 1;
// init table
lua_newtable(lua);
// parse command to the arguments
tb_bool_t s = 0;
tb_char_t* p = buffer;
tb_char_t* b = tb_null;
while ((ch = *p))
{
// enter double quote?
if (!s && ch == '\"') s = 2;
// enter single quote?
else if (!s && ch == '\'') s = 1;
// leave quote?
else if ((s == 2 && ch == '\"') || (s == 1 && ch == '\'')) s = 0;
// is argument end with ' '?
else if (!s && tb_isspace(ch))
{
// fill zero
*p = '\0';
// save this argument
if (b)
{
// save argument
lua_pushstring(lua, b);
lua_rawseti(lua, -2, i++);
// clear it
b = tb_null;
}
}
// get the argument pointer
if ((s || !tb_isspace(ch)) && !b) b = p;
// next
p++;
}
// save this argument
if (b)
{
// save argument
lua_pushstring(lua, b);
lua_rawseti(lua, -2, i++);
// clear it
b = tb_null;
}
} while (0);
// exit buffer
if (buffer) tb_free(buffer);
buffer = tb_null;
// ok
return 1;
}
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