/*****************************************************************************
* win.c: Windows specific functions
*****************************************************************************
* Copyright (C) 2007-2012 the VideoLAN team
*
* Authors: Antoine Cellerier <dionoea at videolan tod org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdbit.h>
#include <vlc_common.h>
#include <vlc_charset.h>
#include "../vlc.h"
#include "../libs.h"
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
/* Based on modules/control/rc.c and include/vlc_interface.h */
static HANDLE GetConsole( lua_State *L )
{
/* Get the file descriptor of the console input */
HANDLE hConsoleIn = GetStdHandle(STD_INPUT_HANDLE);
if( hConsoleIn == INVALID_HANDLE_VALUE )
luaL_error( L, "couldn't find user input handle" );
return hConsoleIn;
}
#define MAX_LINE_LENGTH 1024
static bool ReadWin32( HANDLE *hConsoleIn, unsigned char *p_buffer, int *pi_size )
{
INPUT_RECORD input_record;
DWORD i_dw;
// Prefer to fail early when there's not enough space to store a 4 bytes
// UTF8 character. The function will be immediately called again and we won't
// lose an input
while( *pi_size < MAX_LINE_LENGTH - 4 &&
ReadConsoleInput( hConsoleIn, &input_record, 1, &i_dw ) )
{
if( input_record.EventType != KEY_EVENT ||
!input_record.Event.KeyEvent.bKeyDown ||
input_record.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT ||
input_record.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL||
input_record.Event.KeyEvent.wVirtualKeyCode == VK_MENU ||
input_record.Event.KeyEvent.wVirtualKeyCode == VK_CAPITAL )
{
/* nothing interesting */
continue;
}
if( input_record.Event.KeyEvent.uChar.AsciiChar == '\n' ||
input_record.Event.KeyEvent.uChar.AsciiChar == '\r' )
{
putc( '\n', stdout );
p_buffer[*pi_size] = '\n';
(*pi_size)++;
break;
}
switch( input_record.Event.KeyEvent.uChar.AsciiChar )
{
case '\b':
if ( *pi_size == 0 )
break;
if ( *pi_size > 1 && (p_buffer[*pi_size - 1] & 0xC0) == 0x80 )
{
// pi_size currently points to the character to be written, so
// we need to roll back from 2 bytes to start erasing the previous
// character
(*pi_size) -= 2;
unsigned int nbBytes = 1;
while( *pi_size > 0 && (p_buffer[*pi_size] & 0xC0) == 0x80 )
{
(*pi_size)--;
nbBytes++;
}
assert( stdc_leading_ones( p_buffer[*pi_size] ) == nbBytes + 1 );
// The first utf8 byte will be overridden by a \0
}
else
(*pi_size)--;
p_buffer[*pi_size] = 0;
fputs( "\b \b", stdout );
break;
default:
{
WCHAR psz_winput[] = { input_record.Event.KeyEvent.uChar.UnicodeChar, L'\0' };
char* psz_input = FromWide( psz_winput );
int input_size = strlen(psz_input);
if ( *pi_size + input_size > MAX_LINE_LENGTH )
{
p_buffer[ *pi_size ] = 0;
return false;
}
strcpy( (char*)&p_buffer[*pi_size], psz_input );
utf8_fprintf( stdout, "%s", psz_input );
free(psz_input);
*pi_size += input_size;
}
}
}
p_buffer[ *pi_size ] = 0;
return true;
}
static int vlclua_console_init( lua_State *L )
{
(void)L;
//if ( !AllocConsole() )
// luaL_error( L, "failed to allocate windows console" );
AllocConsole();
freopen( "CONOUT$", "w", stdout );
freopen( "CONOUT$", "w", stderr );
freopen( "CONIN$", "r", stdin );
return 0;
}
static int vlclua_console_wait( lua_State *L )
{
int i_timeout = (int)luaL_optinteger( L, 1, 0 );
DWORD status = WaitForSingleObject( GetConsole( L ), i_timeout );
lua_pushboolean( L, status == WAIT_OBJECT_0 );
return 1;
}
static int vlclua_console_read( lua_State *L )
{
char psz_buffer[MAX_LINE_LENGTH+1];
int i_size = 0;
ReadWin32( GetConsole( L ), (unsigned char*)psz_buffer, &i_size );
lua_pushlstring( L, psz_buffer, i_size );
return 1;
}
static int vlclua_console_write( lua_State *L )
{
if( !lua_isstring( L, 1 ) )
return luaL_error( L, "win.console_write usage: (text)" );
const char* psz_line = luaL_checkstring( L, 1 );
utf8_fprintf( stdout, "%s", psz_line );
return 0;
}
/*****************************************************************************
*
*****************************************************************************/
static const luaL_Reg vlclua_win_reg[] = {
{ "console_init", vlclua_console_init },
{ "console_wait", vlclua_console_wait },
{ "console_read", vlclua_console_read },
{ "console_write", vlclua_console_write },
{ NULL, NULL }
};
void luaopen_win( lua_State *L )
{
lua_newtable( L );
luaL_register( L, NULL, vlclua_win_reg );
lua_setfield( L, -2, "win" );
}
#endif // WINAPI_PARTITION_DESKTOP
¤ Dauer der Verarbeitung: 0.2 Sekunden
(vorverarbeitet am 2026-11-04)
¤
*© Formatika GbR, Deutschland
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