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/*
* clear.c
*
* By Ross Ridge
* Public Domain
* 92/02/01 07:29:47
*
* clear
*
* clears the terminal's screen
*
*/
#include "defs.h"
const char SCCSid[] = "@(#) mytinfo clear.c 3.2 92/02/01 public domain, By Ross Ridge";
#ifndef USE_TERMINFO
#ifdef USE_SGTTY
#include <sgtty.h>
#endif
#ifdef USE_TERMIO
#include <termio.h>
#endif
#ifdef USE_TERMIOS
#include <termios.h>
#endif
#ifdef __FreeBSD__
int tgetent __P((char *, char *));
int tgetnum __P((char *));
int tputs __P((char *, int, int (*)(char)));
#endif
char PC;
short ospeed;
int
#ifdef USE_PROTOTYPES
putch(char c)
#else
putch(c)
int c;
#endif
{
return putchar(c);
}
int
main(argc, argv)
int argc;
char **argv; {
#ifdef USE_PROTOTYPES
char *tgetstr(char *, char **);
#else
char *tgetstr();
#endif
char *term;
char buf[MAX_BUF];
char CL[MAX_LINE];
char *s, *pc;
#ifdef USE_SGTTY
struct sgttyb tty;
gtty(1, &tty);
ospeed = tty.sg_ospeed;
#else
#ifdef USE_TERMIO
struct termio tty;
ioctl(1, TCGETA, &tty);
ospeed = tty.c_cflag & CBAUD;
#else
#ifdef USE_TERMIOS
struct termios tty;
tcgetattr(1, &tty);
switch(cfgetospeed(&tty)) {
case B0: ospeed = 0; break;
case B50: ospeed = 1; break;
case B75: ospeed = 2; break;
case B110: ospeed = 3; break;
case B134: ospeed = 4; break;
case B150: ospeed = 5; break;
case B200: ospeed = 6; break;
case B300: ospeed = 7; break;
case B600: ospeed = 8; break;
case B1200: ospeed = 9; break;
case B1800: ospeed = 10; break;
case B2400: ospeed = 11; break;
case B4800: ospeed = 12; break;
case B9600: ospeed = 13; break;
case EXTA: ospeed = 14; break;
case EXTB: ospeed = 15; break;
#ifdef B57600
case B57600: ospeed = 16; break;
#endif
#ifdef B115200
case B115200: ospeed = 17; break;
#endif
}
#else
ospeed = 0;
#endif
#endif
#endif
term = getenv("TERM");
if (term == NULL)
exit(1);
if (tgetent(buf, term) != 1)
exit(1);
s = CL;
pc = tgetstr("pc", &s);
if (pc != NULL)
PC = *pc;
s = CL;
tgetstr("cl", &s);
if (CL != NULL) {
tputs(CL, tgetnum("li"), putch);
exit(1);
}
return 0;
}
#else /* USE_TERMINFO */
#include <term.h>
int
#ifdef USE_PROTOTYPES
putch(char c)
#else
putch(c)
int c;
#endif
{
return putchar(c);
}
int
main() {
setupterm((char *) 0, 1, (int *) 0);
if (clear_screen == (char *) 0)
exit(1);
tputs(clear_screen, lines > 0 ? lines : 1, putch);
return 0;
}
#endif /* USE_TERMINFO */
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