lib_initscr.c revision 97049 
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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 ****************************************************************************/
33
34/*
35**	lib_initscr.c
36**
37**	The routines initscr(), and termname().
38**
39*/
40
41#include <curses.priv.h>
42#include <tic.h>		/* for MAX_ALIAS */
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 1.29 2001/08/26 01:05:05 tom Exp $")
49
50NCURSES_EXPORT(WINDOW *)
51initscr(void)
52{
53    static bool initialized = FALSE;
54    NCURSES_CONST char *name;
55    int value;
56#ifdef TRACE
57    int t = _nc_getenv_num("NCURSES_TRACE");
58
59    if (t >= 0)
60	trace(t);
61#endif
62
63    T((T_CALLED("initscr()")));
64    /* Portable applications must not call initscr() more than once */
65    if (!initialized) {
66	initialized = TRUE;
67
68	if ((name = getenv("TERM")) == 0
69	    || *name == '\0')
70	    name = "unknown";
71	if (newterm(name, stdout, stdin) == 0) {
72	    fprintf(stderr, "Error opening terminal: %s.\n", name);
73	    exit(EXIT_FAILURE);
74	}
75
76	/* allow user to set maximum escape delay from the environment */
77	if ((value = _nc_getenv_num("ESCDELAY")) >= 0) {
78	    ESCDELAY = value;
79	}
80
81	/* def_shell_mode - done in newterm/_nc_setupscreen */
82	def_prog_mode();
83    }
84    returnWin(stdscr);
85}
86