valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

Add Patch 1321309 (Backspace and overflow fixes to line input) from Avery Lee.

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2535
This commit is contained in:
Peter Veenstra 2006-03-07 12:06:11 +00:00
parent 3a071e89b9
commit 78dbd4109e
1 changed files with 16 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
src/dos/dos.cpp
View file

@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: dos.cpp,v 1.91 2006-02-09 11:47:48 qbix79 Exp $ */
/* $Id: dos.cpp,v 1.92 2006-03-07 12:06:11 qbix79 Exp $ */
#include <stdlib.h>
#include <string.h>
@ -126,8 +126,22 @@ static Bitu DOS_21Handler(void) {
Bit8u free=mem_readb(data);
Bit8u read=0;Bit8u c;Bit16u n=1;
if (!free) break;
while (read<free) {
for(;;) {
DOS_ReadFile(STDIN,&c,&n);
if (c == 8) { // Backspace
if (!read) //Nothing to backspace.
continue;
// STDOUT treats backspace as non-destructive.
DOS_WriteFile(STDOUT,&c,&n);
c = ' '; DOS_WriteFile(STDOUT,&c,&n);
c = 8; DOS_WriteFile(STDOUT,&c,&n);
--read;
}
if (read >= free) { // Keyboard buffer full
Bit8u bell = 7;
DOS_WriteFile(STDOUT, &bell, &n);
continue;
}
DOS_WriteFile(STDOUT,&c,&n);
mem_writeb(data+read+2,c);
if (c==13)