/*
================
Posix_ConsoleInput
Checks for a complete line of text typed in at the console.
Return NULL if a complete line is not ready.
================
*/
char* Posix_ConsoleInput()
{
if( tty_enabled )
{
int ret;
char key;
bool hidden = false;
while( ( ret = read( STDIN_FILENO, &key, 1 ) ) > 0 )
{
if( !hidden )
{
tty_Hide();
hidden = true;
}
switch( key )
{
case 1:
input_field.SetCursor( 0 );
break;
case 5:
input_field.SetCursor( strlen( input_field.GetBuffer() ) );
break;
case 127:
case 8:
input_field.CharEvent( K_BACKSPACE );
break;
case '\n':
idStr::Copynz( input_ret, input_field.GetBuffer(), sizeof( input_ret ) );
assert( hidden );
tty_Show();
write( STDOUT_FILENO, &key, 1 );
input_field.Clear();
if( history_count < COMMAND_HISTORY )
{
history[ history_count ] = input_ret;
history_count++;
}
else
{
history[ history_start ] = input_ret;
history_start++;
history_start %= COMMAND_HISTORY;
}
history_current = 0;
return input_ret;
case '\t':
input_field.AutoComplete();
break;
case 27:
{
// enter escape sequence mode
ret = read( STDIN_FILENO, &key, 1 );
if( ret <= 0 )
{
Sys_Printf( "dropping sequence: '27' " );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
switch( key )
{
case 79:
ret = read( STDIN_FILENO, &key, 1 );
if( ret <= 0 )
{
Sys_Printf( "dropping sequence: '27' '79' " );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
switch( key )
{
case 72:
// xterm only
input_field.SetCursor( 0 );
break;
case 70:
// xterm only
input_field.SetCursor( strlen( input_field.GetBuffer() ) );
break;
default:
Sys_Printf( "dropping sequence: '27' '79' '%d' ", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
break;
case 91:
{
ret = read( STDIN_FILENO, &key, 1 );
if( ret <= 0 )
{
Sys_Printf( "dropping sequence: '27' '91' " );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
switch( key )
{
case 49:
{
ret = read( STDIN_FILENO, &key, 1 );
if( ret <= 0 || key != 126 )
{
Sys_Printf( "dropping sequence: '27' '91' '49' '%d' ", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
// only screen and linux terms
input_field.SetCursor( 0 );
break;
}
case 50:
{
ret = read( STDIN_FILENO, &key, 1 );
if( ret <= 0 || key != 126 )
{
Sys_Printf( "dropping sequence: '27' '91' '50' '%d' ", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
// all terms
input_field.KeyDownEvent( K_INS );
break;
}
case 52:
{
ret = read( STDIN_FILENO, &key, 1 );
if( ret <= 0 || key != 126 )
{
Sys_Printf( "dropping sequence: '27' '91' '52' '%d' ", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
// only screen and linux terms
input_field.SetCursor( strlen( input_field.GetBuffer() ) );
break;
}
case 51:
{
ret = read( STDIN_FILENO, &key, 1 );
if( ret <= 0 )
{
Sys_Printf( "dropping sequence: '27' '91' '51' " );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
if( key == 126 )
{
input_field.KeyDownEvent( K_DEL );
break;
}
Sys_Printf( "dropping sequence: '27' '91' '51' '%d'", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
case 65:
case 66:
{
// history
if( history_current == 0 )
{
history_backup = input_field;
}
if( key == 65 )
{
// up
history_current++;
}
else
{
// down
history_current--;
}
// history_current cycle:
// 0: current edit
// 1 .. Min( COMMAND_HISTORY, history_count ): back in history
if( history_current < 0 )
{
history_current = Min( COMMAND_HISTORY, history_count );
}
else
{
history_current %= Min( COMMAND_HISTORY, history_count ) + 1;
}
int index = -1;
if( history_current == 0 )
{
input_field = history_backup;
}
else
{
index = history_start + Min( COMMAND_HISTORY, history_count ) - history_current;
index %= COMMAND_HISTORY;
assert( index >= 0 && index < COMMAND_HISTORY );
input_field.SetBuffer( history[ index ] );
}
assert( hidden );
tty_Show();
return NULL;
}
case 67:
input_field.KeyDownEvent( K_RIGHTARROW );
break;
case 68:
input_field.KeyDownEvent( K_LEFTARROW );
break;
default:
Sys_Printf( "dropping sequence: '27' '91' '%d' ", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
break;
}
default:
Sys_Printf( "dropping sequence: '27' '%d' ", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
break;
}
default:
if( key >= ' ' )
{
input_field.CharEvent( key );
break;
}
Sys_Printf( "dropping sequence: '%d' ", key );
tty_FlushIn();
assert( hidden );
tty_Show();
return NULL;
}
}
if( hidden )
{
tty_Show();
}
return NULL;
}
else
{
// disabled on OSX. works fine from a terminal, but launching from Finder is causing trouble
// I'm pretty sure it could be re-enabled if needed, and just handling the Finder failure case right (TTimo)
#ifndef __APPLE__
// no terminal support - read only complete lines
int len;
fd_set fdset;
struct timeval timeout;
FD_ZERO( &fdset );
FD_SET( STDIN_FILENO, &fdset );
timeout.tv_sec = 0;
timeout.tv_usec = 0;
if( select( 1, &fdset, NULL, NULL, &timeout ) == -1 || !FD_ISSET( 0, &fdset ) )
{
return NULL;
}
len = read( 0, input_ret, sizeof( input_ret ) );
if( len == 0 )
{
// EOF
return NULL;
}
if( len < 1 )
{
Sys_Printf( "read failed: %s\n", strerror( errno ) ); // something bad happened, cancel this line and print an error
return NULL;
}
if( len == sizeof( input_ret ) )
{
Sys_Printf( "read overflow\n" ); // things are likely to break, as input will be cut into pieces
}
input_ret[ len - 1 ] = '\0'; // rip off the \n and terminate
return input_ret;
#endif
}
return NULL;
}
/*
====================
KeyDownEvent
Handles history and console scrollback
====================
*/
void idConsoleLocal::KeyDownEvent( int key )
{
// Execute F key bindings
if( key >= K_F1 && key <= K_F12 )
{
idKeyInput::ExecKeyBinding( key );
return;
}
// ctrl-L clears screen
if( key == K_L && ( idKeyInput::IsDown( K_LCTRL ) || idKeyInput::IsDown( K_RCTRL ) ) )
{
Clear();
return;
}
// enter finishes the line
if( key == K_ENTER || key == K_KP_ENTER )
{
common->Printf( "]%s\n", consoleField.GetBuffer() );
cmdSystem->BufferCommandText( CMD_EXEC_APPEND, consoleField.GetBuffer() ); // valid command
cmdSystem->BufferCommandText( CMD_EXEC_APPEND, "\n" );
// copy line to history buffer
if( consoleField.GetBuffer()[ 0 ] != '\n' && consoleField.GetBuffer()[ 0 ] != '\0' )
{
consoleHistory.AddToHistory( consoleField.GetBuffer() );
}
consoleField.Clear();
consoleField.SetWidthInChars( LINE_WIDTH );
const bool captureToImage = false;
common->UpdateScreen( captureToImage );// force an update, because the command
// may take some time
return;
}
// command completion
if( key == K_TAB )
{
consoleField.AutoComplete();
return;
}
// command history (ctrl-p ctrl-n for unix style)
if( ( key == K_UPARROW ) ||
( key == K_P && ( idKeyInput::IsDown( K_LCTRL ) || idKeyInput::IsDown( K_RCTRL ) ) ) )
{
idStr hist = consoleHistory.RetrieveFromHistory( true );
if( !hist.IsEmpty() )
{
consoleField.SetBuffer( hist );
}
return;
}
if( ( key == K_DOWNARROW ) ||
( key == K_N && ( idKeyInput::IsDown( K_LCTRL ) || idKeyInput::IsDown( K_RCTRL ) ) ) )
{
idStr hist = consoleHistory.RetrieveFromHistory( false );
if( !hist.IsEmpty() )
{
consoleField.SetBuffer( hist );
}
else // DG: if no more lines are in the history, show a blank line again
{
consoleField.Clear();
} // DG end
return;
}
// console scrolling
if( key == K_PGUP )
{
PageUp();
lastKeyEvent = eventLoop->Milliseconds();
nextKeyEvent = CONSOLE_FIRSTREPEAT;
return;
}
if( key == K_PGDN )
{
PageDown();
lastKeyEvent = eventLoop->Milliseconds();
nextKeyEvent = CONSOLE_FIRSTREPEAT;
return;
}
if( key == K_MWHEELUP )
{
PageUp();
return;
}
if( key == K_MWHEELDOWN )
{
PageDown();
return;
}
// ctrl-home = top of console
if( key == K_HOME && ( idKeyInput::IsDown( K_LCTRL ) || idKeyInput::IsDown( K_RCTRL ) ) )
{
Top();
return;
}
// ctrl-end = bottom of console
if( key == K_END && ( idKeyInput::IsDown( K_LCTRL ) || idKeyInput::IsDown( K_RCTRL ) ) )
{
Bottom();
return;
}
// pass to the normal editline routine
consoleField.KeyDownEvent( key );
}
