getch.c revision 1.1 
1/*
2 * Copyright (c) 1981 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)getch.c	5.6 (Berkeley) 6/1/90";
36#endif /* not lint */
37
38# include	"curses.ext"
39
40/*
41 *	This routine reads in a character from the window.
42 *
43 */
44wgetch(win)
45reg WINDOW	*win; {
46
47	reg bool	weset = FALSE;
48	reg char	inp;
49
50	if (!win->_scroll && (win->_flags&_FULLWIN)
51	    && win->_curx == win->_maxx - 1 && win->_cury == win->_maxy - 1)
52		return ERR;
53# ifdef DEBUG
54	fprintf(outf, "WGETCH: _echoit = %c, _rawmode = %c\n", _echoit ? 'T' : 'F', _rawmode ? 'T' : 'F');
55# endif
56	if (_echoit && !_rawmode) {
57		cbreak();
58		weset++;
59	}
60	inp = getchar();
61# ifdef DEBUG
62	fprintf(outf,"WGETCH got '%s'\n",unctrl(inp));
63# endif
64	if (_echoit) {
65		mvwaddch(curscr, win->_cury + win->_begy,
66			win->_curx + win->_begx, inp);
67		waddch(win, inp);
68	}
69	if (weset)
70		nocbreak();
71	return inp;
72}
73