1/****************************************************************************
2 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
7 * without limitation the rights to use, copy, modify, merge, publish,      *
8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
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                        1996-2003               *
33 ****************************************************************************/
34
35/*
36**	lib_initscr.c
37**
38**	The routines initscr(), and termname().
39**
40*/
41
42#include <curses.priv.h>
43
44#if HAVE_SYS_TERMIO_H
45#include <sys/termio.h>		/* needed for ISC */
46#endif
47
48MODULE_ID("$Id: lib_initscr.c,v 1.38 2008/08/16 21:20:48 Werner.Fink Exp $")
49
50NCURSES_EXPORT(WINDOW *)
51initscr(void)
52{
53    WINDOW *result;
54
55    NCURSES_CONST char *name;
56
57    START_TRACE();
58    T((T_CALLED("initscr()")));
59
60    _nc_init_pthreads();
61    _nc_lock_global(curses);
62
63    /* Portable applications must not call initscr() more than once */
64    if (!_nc_globals.init_screen) {
65	_nc_globals.init_screen = TRUE;
66
67	if ((name = getenv("TERM")) == 0
68	    || *name == '\0')
69	    name = "unknown";
70#ifdef __CYGWIN__
71	/*
72	 * 2002/9/21
73	 * Work around a bug in Cygwin.  Full-screen subprocesses run from
74	 * bash, in turn spawned from another full-screen process, will dump
75	 * core when attempting to write to stdout.  Opening /dev/tty
76	 * explicitly seems to fix the problem.
77	 */
78	if (isatty(fileno(stdout))) {
79	    FILE *fp = fopen("/dev/tty", "w");
80	    if (fp != 0 && isatty(fileno(fp))) {
81		fclose(stdout);
82		dup2(fileno(fp), STDOUT_FILENO);
83		stdout = fdopen(STDOUT_FILENO, "w");
84	    }
85	}
86#endif
87	if (newterm(name, stdout, stdin) == 0) {
88	    fprintf(stderr, "Error opening terminal: %s.\n", name);
89	    exit(EXIT_FAILURE);
90	}
91
92	/* def_shell_mode - done in newterm/_nc_setupscreen */
93	def_prog_mode();
94    }
95    result = stdscr;
96    _nc_unlock_global(curses);
97
98    returnWin(result);
99}
100