char *CTextConsoleWin32::GetLine()
{
while (true)
{
INPUT_RECORD recs[1024];
unsigned long numread;
unsigned long numevents;
if (!GetNumberOfConsoleInputEvents(hinput, &numevents))
{
if (m_System) {
m_System->Errorf("CTextConsoleWin32::GetLine: !GetNumberOfConsoleInputEvents\n");
}
return nullptr;
}
if (numevents <= 0)
break;
if (!ReadConsoleInput(hinput, recs, ARRAYSIZE(recs), &numread))
{
if (m_System) {
m_System->Errorf("CTextConsoleWin32::GetLine: !ReadConsoleInput\n");
}
return nullptr;
}
if (numread == 0)
return nullptr;
for (int i = 0; i < (int)numread; i++)
{
INPUT_RECORD *pRec = &recs[i];
if (pRec->EventType != KEY_EVENT)
continue;
if (pRec->Event.KeyEvent.bKeyDown)
{
// check for cursor keys
if (pRec->Event.KeyEvent.wVirtualKeyCode == VK_UP)
{
ReceiveUpArrow();
}
else if (pRec->Event.KeyEvent.wVirtualKeyCode == VK_DOWN)
{
ReceiveDownArrow();
}
else if (pRec->Event.KeyEvent.wVirtualKeyCode == VK_LEFT)
{
ReceiveLeftArrow();
}
else if (pRec->Event.KeyEvent.wVirtualKeyCode == VK_RIGHT)
{
ReceiveRightArrow();
}
else
{
int nLen;
char ch = pRec->Event.KeyEvent.uChar.AsciiChar;
switch (ch)
{
case '\r': // Enter
nLen = ReceiveNewline();
if (nLen)
{
return m_szConsoleText;
}
break;
case '\b': // Backspace
ReceiveBackspace();
break;
case '\t': // TAB
ReceiveTab();
break;
default:
// dont' accept nonprintable chars
if ((ch >= ' ') && (ch <= '~'))
{
ReceiveStandardChar(ch);
}
break;
}
}
}
}
}
return nullptr;
}
char * CTextConsoleUnix::GetLine( void )
{
if ( !kbhit() ) // early return for 99.999% case :)
return NULL;
escape_sequence_t es;
es = ESCAPE_CLEAR;
sigset_t block_ttou;
sigemptyset (&block_ttou);
sigaddset (&block_ttou, SIGTTOU);
sigaddset (&block_ttou, SIGTTIN);
sigprocmask (SIG_BLOCK, &block_ttou, NULL);
while ( 1 )
{
char ch;
int nLen;
if ( !kbhit() )
break;
ch = 0;
int numRead = read( STDIN_FILENO, &ch, 1 );
if ( !numRead )
break;
switch (ch)
{
case '\n': // Enter
es = ESCAPE_CLEAR;
nLen = ReceiveNewline();
if ( nLen )
{
sigprocmask (SIG_UNBLOCK, &block_ttou, NULL);
return m_szConsoleText;
}
break;
case 127: // Backspace
case '\b': // Backspace
es = ESCAPE_CLEAR;
ReceiveBackspace();
break;
case '\t': // TAB
es = ESCAPE_CLEAR;
ReceiveTab();
break;
case 27: // Escape character
es = ESCAPE_RECEIVED;
break;
case '[': // 2nd part of escape sequence
case 'O':
case 'o':
switch( es )
{
case ESCAPE_CLEAR:
case ESCAPE_BRACKET_RECEIVED:
es = ESCAPE_CLEAR;
ReceiveStandardChar( ch );
break;
case ESCAPE_RECEIVED:
es = ESCAPE_BRACKET_RECEIVED;
break;
}
break;
case 'A':
if ( es == ESCAPE_BRACKET_RECEIVED )
{
es = ESCAPE_CLEAR;
ReceiveUpArrow();
}
else
{
es = ESCAPE_CLEAR;
ReceiveStandardChar( ch );
}
break;
case 'B':
if ( es == ESCAPE_BRACKET_RECEIVED )
{
es = ESCAPE_CLEAR;
ReceiveDownArrow();
}
else
{
es = ESCAPE_CLEAR;
ReceiveStandardChar( ch );
}
break;
case 'C':
if ( es == ESCAPE_BRACKET_RECEIVED )
{
es = ESCAPE_CLEAR;
ReceiveRightArrow();
}
else
{
es = ESCAPE_CLEAR;
ReceiveStandardChar( ch );
}
break;
case 'D':
if ( es == ESCAPE_BRACKET_RECEIVED )
{
es = ESCAPE_CLEAR;
ReceiveLeftArrow();
}
else
{
es = ESCAPE_CLEAR;
ReceiveStandardChar( ch );
}
break;
default:
if ( es != ESCAPE_BRACKET_RECEIVED ) // Just eat this char if it's an unsupported escape
{
if ( ( ch >= ' ') && ( ch <= '~' ) ) // dont' accept nonprintable chars
{
es = ESCAPE_CLEAR;
ReceiveStandardChar( ch );
}
}
break;
}
fflush( stdout );
}
sigprocmask (SIG_UNBLOCK, &block_ttou, NULL);
return NULL;
}