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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) 2015-2020, TBOOX Open Source Group.
*
* @author OpportunityLiu, ruki
* @file stdfile.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "stdfile"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#ifdef TB_CONFIG_OS_WINDOWS
# include <io.h>
#else
# include <unistd.h>
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* macros
*/
// the singleton type of stdfile
#define XM_IO_STDFILE_STDIN (TB_SINGLETON_TYPE_USER + 1)
#define XM_IO_STDFILE_STDOUT (TB_SINGLETON_TYPE_USER + 2)
#define XM_IO_STDFILE_STDERR (TB_SINGLETON_TYPE_USER + 3)
/* //////////////////////////////////////////////////////////////////////////////////////
* private implementation
*/
static tb_size_t xm_io_stdfile_isatty(tb_size_t type)
{
tb_bool_t answer = tb_false;
#ifdef TB_CONFIG_OS_WINDOWS
DWORD mode;
HANDLE console_handle;
switch (type)
{
case XM_IO_FILE_TYPE_STDIN: console_handle = GetStdHandle(STD_INPUT_HANDLE); break;
case XM_IO_FILE_TYPE_STDOUT: console_handle = GetStdHandle(STD_OUTPUT_HANDLE); break;
case XM_IO_FILE_TYPE_STDERR: console_handle = GetStdHandle(STD_ERROR_HANDLE); break;
}
answer = GetConsoleMode(console_handle, &mode);
#else
switch (type)
{
case XM_IO_FILE_TYPE_STDIN: answer = isatty(fileno(stdin)); break;
case XM_IO_FILE_TYPE_STDOUT: answer = isatty(fileno(stdout)); break;
case XM_IO_FILE_TYPE_STDERR: answer = isatty(fileno(stderr)); break;
}
#endif
if (answer) type |= XM_IO_FILE_FLAG_TTY;
return type;
}
static tb_handle_t xm_io_stdfile_instance_init(tb_cpointer_t* ppriv)
{
// get stdfile type
tb_size_t* ptype = (tb_size_t*)ppriv;
tb_assert_and_check_return_val(ptype, tb_null);
// init stdfile
tb_stdfile_ref_t fp = tb_null;
tb_size_t type = *ptype;
switch (type)
{
case XM_IO_FILE_TYPE_STDIN:
fp = tb_stdfile_input();
break;
case XM_IO_FILE_TYPE_STDOUT:
fp = tb_stdfile_output();
break;
case XM_IO_FILE_TYPE_STDERR:
fp = tb_stdfile_error();
break;
}
// make file
xm_io_file_t* file = tb_malloc0_type(xm_io_file_t);
tb_assert_and_check_return_val(file, 0);
// init file
file->std_ref = fp;
file->stream = tb_null;
file->fstream = tb_null;
file->type = xm_io_stdfile_isatty(type);
file->encoding = TB_CHARSET_TYPE_UTF8;
// init the read/write line cache buffer
tb_buffer_init(&file->rcache);
tb_buffer_init(&file->wcache);
// ok
return (tb_handle_t)file;
}
static tb_void_t xm_io_stdfile_instance_exit(tb_handle_t stdfile, tb_cpointer_t priv)
{
xm_io_file_t* file = (xm_io_file_t*)stdfile;
if (file)
{
tb_buffer_exit(&file->rcache);
tb_buffer_exit(&file->wcache);
tb_free(file);
}
}
static xm_io_file_t* xm_io_stdfile_input()
{
return (xm_io_file_t*)tb_singleton_instance(XM_IO_STDFILE_STDIN, xm_io_stdfile_instance_init, xm_io_stdfile_instance_exit, tb_null, tb_u2p(XM_IO_FILE_TYPE_STDIN));
}
static xm_io_file_t* xm_io_stdfile_output()
{
return (xm_io_file_t*)tb_singleton_instance(XM_IO_STDFILE_STDOUT, xm_io_stdfile_instance_init, xm_io_stdfile_instance_exit, tb_null, tb_u2p(XM_IO_FILE_TYPE_STDOUT));
}
static xm_io_file_t* xm_io_stdfile_error()
{
return (xm_io_file_t*)tb_singleton_instance(XM_IO_STDFILE_STDERR, xm_io_stdfile_instance_init, xm_io_stdfile_instance_exit, tb_null, tb_u2p(XM_IO_FILE_TYPE_STDERR));
}
/* //////////////////////////////////////////////////////////////////////////////////////
* interfaces
*/
// io.stdfile(stdin: 1, stdout: 2, stderr: 3)
tb_int_t xm_io_stdfile(lua_State* lua)
{
// check
tb_assert_and_check_return_val(lua, 0);
// get std type
tb_long_t type = lua_tointeger(lua, 1);
// get stdfile
xm_io_file_t* file = tb_null;
switch (type)
{
case XM_IO_FILE_TYPE_STDIN:
file = xm_io_stdfile_input();
break;
case XM_IO_FILE_TYPE_STDOUT:
file = xm_io_stdfile_output();
break;
case XM_IO_FILE_TYPE_STDERR:
file = xm_io_stdfile_error();
break;
}
if (file)
{
lua_pushlightuserdata(lua, (tb_pointer_t)file);
return 1;
}
else xm_io_return_error(lua, "invalid stdfile type!");
}
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