/* Destructive backspace */
void back(int spaces) {
int a;
for (a=0; a<spaces; ++a) {
scr_putc(8);
scr_putc(32);
scr_putc(8);
}
}
/*
* Issue the paginator prompt (more / hit any key to continue)
*/
void hit_any_key(void) {
int a, b;
color(COLOR_PUSH);
color(DIM_RED);
scr_printf("%s\r", moreprompt);
color(COLOR_POP);
b=inkey();
for (a=0; a<screenwidth; ++a) {
scr_putc(' ');
}
scr_printf("\r");
if ( (rc_prompt_control == 1) || ((rc_prompt_control == 3) && (userflags & US_PROMPTCTL)) ) {
if (b == 'q' || b == 'Q' || b == 's' || b == 'S') {
b = STOP_KEY;
}
if (b == 'n' || b == 'N') {
b = NEXT_KEY;
}
}
if (b==NEXT_KEY) sigcaught = SIGINT;
if (b==STOP_KEY) sigcaught = SIGQUIT;
}
/*
* scr_printf() outputs to the terminal
*/
int scr_printf(char *fmt, ...)
{
static char outbuf[4096]; /* static for performance -- not re-entrant -- change if needed */
va_list ap;
register int retval;
int i, len;
va_start(ap, fmt);
retval = vsnprintf(outbuf, sizeof outbuf, fmt, ap);
va_end(ap);
len = strlen(outbuf);
for (i=0; i<len; ++i) {
scr_putc(outbuf[i]);
}
return retval;
}
/*
* Output one character to the terminal
*/
int scr_putc(int c)
{
/* handle tabs normally */
if (c == '\t') {
do {
scr_putc(' ');
} while ((cols_printed % 8) != 0);
return(c);
}
/* Output the character... */
if (putc(c, stdout) == EOF) {
logoff(NULL, 3);
}
if (c == '\n') {
++lines_printed;
cols_printed = 0;
}
else if (c == '\r') {
cols_printed = 0;
}
else if (isprint(c)) {
++cols_printed;
if ((screenwidth > 0) && (cols_printed > screenwidth)) {
++lines_printed;
cols_printed = 0;
}
}
/* How many lines output before stopping for the paginator?
* Depends on whether we are displaying a status line.
*/
int height_offset = ( ((enable_color) && (screenwidth > 0) && (enable_status_line)) ? (3) : (2) ) ;
/* Ok, go check it. Stop and display the paginator prompt if necessary. */
if ((screenheight > 0) && (lines_printed > (screenheight-height_offset))) {
lines_printed = 0;
hit_any_key();
lines_printed = 0;
cols_printed = 0;
}
return c;
}
