4.3BSD-Reno/src/lib/libcurses/getch.c

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/*
 * Copyright (c) 1981 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char sccsid[] = "@(#)getch.c	5.6 (Berkeley) 6/1/90";
#endif /* not lint */

# include	"curses.ext"

/*
 *	This routine reads in a character from the window.
 *
 */
wgetch(win)
reg WINDOW	*win; {

	reg bool	weset = FALSE;
	reg char	inp;

	if (!win->_scroll && (win->_flags&_FULLWIN)
	    && win->_curx == win->_maxx - 1 && win->_cury == win->_maxy - 1)
		return ERR;
# ifdef DEBUG
	fprintf(outf, "WGETCH: _echoit = %c, _rawmode = %c\n", _echoit ? 'T' : 'F', _rawmode ? 'T' : 'F');
# endif
	if (_echoit && !_rawmode) {
		cbreak();
		weset++;
	}
	inp = getchar();
# ifdef DEBUG
	fprintf(outf,"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;
}