contrib/ncurses/progs/clear.c

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  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  *     and: Thomas E. Dickey                        1996-on                 *
  33  ****************************************************************************/
  34
  35 /*
  36  * clear.c --  clears the terminal's screen
  37  */
  38
  39 #define USE_LIBTINFO
  40 #include <progs.priv.h>
  41
  42 MODULE_ID("$Id: clear.c,v 1.13 2013/06/22 22:20:54 tom Exp $")
  43
  44 static int
  45 putch(int c)
  46 {
  47     return putchar(c);
  48 }
  49
  50 int
  51 main(
  52         int argc GCC_UNUSED,
  53         char *argv[]GCC_UNUSED)
  54 {
  55     char *E3;
  56
  57     setupterm((char *) 0, STDOUT_FILENO, (int *) 0);
  58
  59     /* Clear the scrollback buffer if possible. */
  60     E3 = tigetstr("E3");
  61     if (E3)
  62         (void) tputs(E3, lines > 0 ? lines : 1, putch);
  63
  64     ExitProgram((tputs(clear_screen, lines > 0 ? lines : 1, putch) == ERR)
  65                 ? EXIT_FAILURE
  66                 : EXIT_SUCCESS);
  67 }