/*
* Clear to the end of the current physical line
*/
void
vclreol(void)
{
register int i;
register char *tp;
if (destcol == VCOLUMNS)
return;
destline += destcol / VCOLUMNS;
destcol %= VCOLUMNS;
#ifdef DEBUG
if (destline < 0 || destline > TUBELINES)
error("Internal error: vclreol@- please tell someone");
#endif
i = VCOLUMNS - destcol;
tp = vtube[destline] + destcol;
if (*tp == 0)
return;
if (CE) {
vcsync();
vputs(CE);
vclrbyte(tp, i);
return;
}
while (i > 0 && *tp != 0) {
vputchar(' ');
--i, tp++;
}
}
/*
* Clear the entire (physical and logical) screen
*/
void
vclear(void)
{
vputs(CLEAR);
destcol = 0;
outcol = 0;
destline = 0;
outline = 0;
vclrbyte(vtube0, LINES * COLUMNS);
}
/*
* Deal with the screen, clearing, cursor positioning, putting characters
* into the screen image, and deleting characters.
* Really hard stuff here is utilizing insert character operations
* on intelligent terminals which differs widely from terminal to terminal.
*/
void
vclear(void)
{
#ifdef TRACE
if (trace)
tfixnl(), fprintf(trace, "------\nvclear, clear_screen '%s'\n", clear_screen);
#endif
tputs(clear_screen, lines, putch);
destcol = 0;
outcol = 0;
destline = 0;
outline = 0;
if (inopen)
vclrbyte(vtube0, WCOLS * (WECHO - ZERO + 1));
}
/*
* Can we hack an open/visual on this terminal?
* If so, then divide the screen buffer up into lines,
* and initialize a bunch of state variables before we start.
*/
static void
vok(char *atube)
{
register int i;
if (WCOLS == 1000)
serror("Don't know enough about your terminal to use %s", Command);
if (WCOLS > TUBECOLS)
error("Terminal too wide");
if (WLINES >= TUBELINES || WCOLS * (WECHO - ZERO + 1) > TUBESIZE)
error("Screen too large");
vtube0 = atube;
vclrbyte(atube, WCOLS * (WECHO - ZERO + 1));
for (i = 0; i < ZERO; i++)
vtube[i] = (char *) 0;
for (; i <= WECHO; i++)
vtube[i] = atube, atube += WCOLS;
for (; i < TUBELINES; i++)
vtube[i] = (char *) 0;
vutmp = atube;
vundkind = VNONE;
vUNDdot = 0;
OCOLUMNS = COLUMNS;
inopen = 1;
#ifdef CBREAK
signal(SIGINT, vintr);
#endif
vmoving = 0;
splitw = 0;
doomed = 0;
holdupd = 0;
Peekkey = 0;
vcnt = vcline = 0;
if (vSCROLL == 0)
vSCROLL = (value(WINDOW)+1)/2; /* round up so dft=6,11 */
}
/*
* Clear to the end of the current physical line
*/
void
vclreol(void)
{
int i;
wchar_t *tp, j;
#ifdef TRACE
if (trace)
fprintf(trace, "vclreol(), destcol %d, ateopr() %d\n", destcol, ateopr());
#endif
if (destcol == WCOLS)
return;
destline += destcol / WCOLS;
destcol %= WCOLS;
if (destline < 0 || destline > WECHO)
error(gettext("Internal error: vclreol"));
i = WCOLS - destcol;
tp = vtube[destline] + destcol;
if (clr_eol) {
if (insert_null_glitch && *tp || !ateopr()) {
vcsync();
vputp(clr_eol, 1);
}
vclrbyte(tp, i);
return;
}
if (*tp == 0)
return;
while (i > 0 && (j = *tp & (QUOTE|TRIM))) {
if (j != ' ' && (j & QUOTE) == 0) {
destcol = WCOLS - i;
(void) vputchar(' ');
}
--i, *tp++ = 0;
}
}