[unix-history] / lib / libcurses / getch.c

/*
 * Copyright (c) 1981, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)getch.c	8.1 (Berkeley) 6/4/93";
#endif	/* not lint */

#include <curses.h>

/*
 * wgetch --
 *	Read in a character from the window.
 */
int
wgetch(win)
	register WINDOW *win;
{
	register int inp, weset;

	if (!(win->flags & __SCROLLOK) && (win->flags & __FULLWIN)
	    && win->curx == win->maxx - 1 && win->cury == win->maxy - 1)
		return (ERR);
#ifdef DEBUG
	__CTRACE("wgetch: __echoit = %d, __rawmode = %d\n",
	    __echoit, __rawmode);
#endif
	if (__echoit && !__rawmode) {
		cbreak();
		weset = 1;
	} else
		weset = 0;

	inp = getchar();
	if (inp != EOF) {
#ifdef DEBUG
		__CTRACE("wgetch got '%s'\n", unctrl(inp));
#endif
		if (__echoit) {
			mvwaddch(curscr,
			    win->cury + win->begy, win->curx + win->begx, inp);
			waddch(win, inp);
		}
	}
	if (weset)
		nocbreak();
	return (inp);
}
Commit	Line	Data
15637ed4	1	/*
b80b8de3 AC	2	* Copyright (c) 1981, 1993
b80b8de3 AC	3	* The Regents of the University of California. All rights reserved.
15637ed4 RG	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
b80b8de3 AC	35	static char sccsid[] = "@(#)getch.c 8.1 (Berkeley) 6/4/93";
b80b8de3 AC	36	#endif /* not lint */
15637ed4	37
b80b8de3	38	#include <curses.h>
15637ed4 RG	39
15637ed4 RG	40	/*
b80b8de3 AC	41	* wgetch --
b80b8de3 AC	42	* Read in a character from the window.
15637ed4	43	*/
b80b8de3	44	int
15637ed4	45	wgetch(win)
b80b8de3 AC	46	register WINDOW *win;
	47	{
	48	register int inp, weset;
15637ed4	49
b80b8de3 AC	50	if (!(win->flags & __SCROLLOK) && (win->flags & __FULLWIN)
	51	&& win->curx == win->maxx - 1 && win->cury == win->maxy - 1)
	52	return (ERR);
	53	#ifdef DEBUG
	54	__CTRACE("wgetch: __echoit = %d, __rawmode = %d\n",
	55	__echoit, __rawmode);
	56	#endif
	57	if (__echoit && !__rawmode) {
15637ed4	58	cbreak();
b80b8de3 AC	59	weset = 1;
	60	} else
	61	weset = 0;
	62
15637ed4	63	inp = getchar();
5b37262a	64	if (inp != EOF) {
b80b8de3 AC	65	#ifdef DEBUG
	66	__CTRACE("wgetch got '%s'\n", unctrl(inp));
	67	#endif
	68	if (__echoit) {
	69	mvwaddch(curscr,
	70	win->cury + win->begy, win->curx + win->begx, inp);
	71	waddch(win, inp);
5b37262a	72	}
15637ed4 RG	73	}
	74	if (weset)
	75	nocbreak();
b80b8de3	76	return (inp);
15637ed4	77	}