lib_initscr.c revision 174993 
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2 * Copyright (c) 1998-2005,2007 Free Software Foundation, Inc.              *
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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                        1996-2003               *
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 1.35 2007/04/21 20:43:02 tom Exp $")
49
50NCURSES_EXPORT(WINDOW *)
51initscr(void)
52{
53    NCURSES_CONST char *name;
54
55    START_TRACE();
56    T((T_CALLED("initscr()")));
57    /* Portable applications must not call initscr() more than once */
58    if (!_nc_globals.init_screen) {
59	_nc_globals.init_screen = TRUE;
60
61	if ((name = getenv("TERM")) == 0
62	    || *name == '\0')
63	    name = "unknown";
64#ifdef __CYGWIN__
65	/*
66	 * 2002/9/21
67	 * Work around a bug in Cygwin.  Full-screen subprocesses run from
68	 * bash, in turn spawned from another full-screen process, will dump
69	 * core when attempting to write to stdout.  Opening /dev/tty
70	 * explicitly seems to fix the problem.
71	 */
72	if (isatty(fileno(stdout))) {
73	    FILE *fp = fopen("/dev/tty", "w");
74	    if (fp != 0 && isatty(fileno(fp))) {
75		fclose(stdout);
76		dup2(fileno(fp), STDOUT_FILENO);
77		stdout = fdopen(STDOUT_FILENO, "w");
78	    }
79	}
80#endif
81	if (newterm(name, stdout, stdin) == 0) {
82	    fprintf(stderr, "Error opening terminal: %s.\n", name);
83	    exit(EXIT_FAILURE);
84	}
85
86	/* def_shell_mode - done in newterm/_nc_setupscreen */
87	def_prog_mode();
88    }
89    returnWin(stdscr);
90}
91