/*	$OpenBSD: lib_initscr.c,v 1.2 2001/01/22 18:01:40 millert Exp $	*/

/****************************************************************************
 * Copyright (c) 1998,2000 Free Software Foundation, Inc.                   *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
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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("$From: lib_initscr.c,v 1.28 2000/12/10 02:43:27 tom Exp $")

NCURSES_EXPORT(WINDOW *)
initscr(void)
{
    static bool initialized = FALSE;
    NCURSES_CONST char *name;
    int value;

    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);
}