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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 - 2019, TBOOX Open Source Group.
*
* @author ruki
* @file openv.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "process.openv"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
// p = process.openv(shellname, argv, outfile, errfile, envs)
tb_int_t xm_process_openv(lua_State* lua)
{
// check
tb_assert_and_check_return_val(lua, 0);
// check argv
if (!lua_istable(lua, 2))
{
// error
lua_pushfstring(lua, "invalid argv type(%s) for process.openv", luaL_typename(lua, 2));
lua_error(lua);
return 0;
}
// get the output and error file
tb_char_t const* shellname = lua_tostring(lua, 1);
tb_char_t const* outfile = lua_tostring(lua, 3);
tb_char_t const* errfile = lua_tostring(lua, 4);
tb_check_return_val(shellname, 0);
// get environments
tb_char_t const* envs[256] = {0};
tb_size_t envn = 0;
if (lua_istable(lua, 5))
{
// get environment variables count
envn = (tb_size_t)lua_objlen(lua, 5);
// get all passed environment variables
tb_size_t i;
for (i = 0; i < envn; i++)
{
// get envs[i]
lua_pushinteger(lua, i + 1);
lua_gettable(lua, 5);
// is string?
if (lua_isstring(lua, -1))
{
// add this environment value
if (i + 1 < tb_arrayn(envs))
envs[i] = lua_tostring(lua, -1);
else
{
// error
lua_pushfstring(lua, "envs is too large(%lu > %d) for process.openv", envn, tb_arrayn(envs) - 1);
lua_error(lua);
}
}
else
{
// error
lua_pushfstring(lua, "invalid envs[%ld] type(%s) for process.openv", i, luaL_typename(lua, -1));
lua_error(lua);
}
// pop it
lua_pop(lua, 1);
}
}
// get the arguments count
tb_long_t argn = lua_objlen(lua, 2);
tb_check_return_val(argn >= 0, 0);
// get arguments
tb_size_t argi = 0;
tb_char_t const** argv = tb_nalloc0_type(1 + argn + 1, tb_char_t const*);
tb_check_return_val(argv, 0);
// fill arguments
argv[0] = shellname;
for (argi = 0; argi < argn; argi++)
{
// get argv[i]
lua_pushinteger(lua, argi + 1);
lua_gettable(lua, 2);
// is string?
if (lua_isstring(lua, -1))
{
// pass this argument
argv[1 + argi] = lua_tostring(lua, -1);
}
else
{
// error
lua_pushfstring(lua, "invalid argv[%ld] type(%s) for process.openv", argi, luaL_typename(lua, -1));
lua_error(lua);
}
// pop it
lua_pop(lua, 1);
}
// init attributes
tb_process_attr_t attr = {0};
// set the new environments
if (envn > 0) attr.envp = envs;
// redirect stdout?
if (outfile)
{
// redirect stdout to file
attr.outfile = outfile;
attr.outmode = TB_FILE_MODE_RW | TB_FILE_MODE_TRUNC | TB_FILE_MODE_CREAT;
}
// redirect stderr?
if (errfile)
{
// redirect stderr to file
attr.errfile = errfile;
attr.errmode = TB_FILE_MODE_RW | TB_FILE_MODE_TRUNC | TB_FILE_MODE_CREAT;
}
// init process
tb_process_ref_t process = (tb_process_ref_t)tb_process_init(shellname, argv, &attr);
if (process) lua_pushlightuserdata(lua, (tb_pointer_t)process);
else lua_pushnil(lua);
// exit argv
if (argv) tb_free(argv);
argv = tb_null;
// ok
return 1;
}
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