lib_initscr.c   [plain text]

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/****************************************************************************
 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 ****************************************************************************/

/*
**	lib_initscr.c
**
**	The routines initscr(), and termname().
**
*/

#include <curses.priv.h>
#include <tic.h>		/* for MAX_ALIAS */

#if HAVE_SYS_TERMIO_H
#include <sys/termio.h>		/* needed for ISC */
#endif

MODULE_ID("$Id: lib_initscr.c,v 1.1.1.1 2001/11/29 20:40:56 jevans Exp $")

NCURSES_EXPORT(WINDOW *)
initscr(void)
{
    static bool initialized = FALSE;
    NCURSES_CONST char *name;
    int value;
#ifdef TRACE
    int t = _nc_getenv_num("NCURSES_TRACE");

    if (t >= 0)
	trace(t);
#endif

    T((T_CALLED("initscr()")));
    /* Portable applications must not call initscr() more than once */
    if (!initialized) {
	initialized = TRUE;

	if ((name = getenv("TERM")) == 0
	    || *name == '\0')
	    name = "unknown";
	if (newterm(name, stdout, stdin) == 0) {
	    fprintf(stderr, "Error opening terminal: %s.\n", name);
	    exit(EXIT_FAILURE);
	}

	/* allow user to set maximum escape delay from the environment */
	if ((value = _nc_getenv_num("ESCDELAY")) >= 0) {
	    ESCDELAY = value;
	}

	/* def_shell_mode - done in newterm/_nc_setupscreen */
	def_prog_mode();
    }
    returnWin(stdscr);
}