int putch(int c)
{
int row, col;
ScreenGetCursor(&row, &col);
/* first, handle the character */
if (c == '\n')
{
row++;
}
else if (c == '\r')
{
col = txinfo.winleft - 1;
}
else if (c == '\b')
{
if (col > txinfo.winleft - 1)
col--;
else if (row > txinfo.wintop -1)
{
/*
* Turbo-C ignores this case; we are smarter.
*/
row--;
col = txinfo.winright-1;
}
}
else if (c == 0x07)
bell();
else {
/* short val = c | (ScreenAttrib << 8); */
/* puttext(col + 1, row + 1, col + 1, row + 1, &val); */
ScreenPutChar(c, ScreenAttrib, col, row);
col++;
}
/* now, readjust the window */
if (col >= txinfo.winright) {
col = txinfo.winleft - 1;
row++;
}
if (row >= txinfo.winbottom) {
/* scrollwin(0, txinfo.winbottom - txinfo.wintop, 1); */
if (_wscroll)
{
ScreenSetCursor(txinfo.wintop-1,0);
delline();
}
row--;
}
ScreenSetCursor(row, col);
txinfo.cury = row - txinfo.wintop + 2;
txinfo.curx = col - txinfo.winleft + 2;
return c;
}
void
gotoxy(int col, int row)
{
ScreenSetCursor(row + txinfo.wintop - 2, col + txinfo.winleft - 2);
txinfo.curx = col;
txinfo.cury = row;
}
int cputs(const char *s)
{
int row, col,c;
const unsigned char *ss = (const unsigned char *)s;
short *viaddr;
short sa = ScreenAttrib << 8;
ScreenGetCursor(&row, &col);
viaddr = (short *)VIDADDR(row,col);
/*
* Instead of just calling putch; we do everything by hand here,
* This is much faster. We don't move the cursor after each character,
* only after the whole string is written, because ScreenSetCursor
* needs to long because of switching to real mode needed with djgpp.
* You won't recognize the difference.
*/
while ((c = *ss++))
{
/* first, handle the character */
if (c == '\n')
{
row++;
viaddr += txinfo.screenwidth;
}
else if (c == '\r')
{
col = txinfo.winleft - 1;
viaddr = (short *)VIDADDR(row,col);
}
else if (c == '\b')
{
if (col > txinfo.winleft-1)
{
col--;
viaddr--;
}
else if (row > txinfo.wintop -1)
{
/*
* Turbo-C ignores this case. We want to be able to
* edit strings with backspace in gets after
* a linefeed, so we are smarter
*/
row--;
col = txinfo.winright-1;
viaddr = (short *)VIDADDR(row,col);
}
}
else if (c == 0x07)
bell();
else {
short q = c | sa;
dosmemput(&q, 2, (int)viaddr);
viaddr++;
col++;
}
/* now, readjust the window */
if (col >= txinfo.winright) {
col = txinfo.winleft - 1;
row++;
viaddr = (short *)VIDADDR(row,col);
}
if (row >= txinfo.winbottom) {
ScreenSetCursor(txinfo.wintop-1,0); /* goto first line in window */
delline(); /* and delete it */
row--;
viaddr -= txinfo.screenwidth;
}
}
ScreenSetCursor(row, col);
txinfo.cury = row - txinfo.wintop + 2;
txinfo.curx = col - txinfo.winleft + 2;
return(*(--ss));
}
void term_goto(int x, int y) {
ScreenSetCursor(x, y);
}