/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#ifndef lint
static char
sccsid[] = "@(#)addch.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
#endif /* not lint */
#include "curses.ext"
/* forward declaration */
static void set_ch(WINDOW *, int, int, int);
/*
* This routine adds the character to the current position
*/
int
waddch(WINDOW *win, char c)
{
int x, y;
int newx;
x = win->_curx;
y = win->_cury;
#ifdef FULLDEBUG
fprintf(outf, "ADDCH('%c') at (%d, %d)\n", c, y, x);
#endif
switch (c) {
case '\t':
for (newx = x + (8 - (x & 07)); x < newx; x++)
if (waddch(win, ' ') == ERR)
return (ERR);
return (OK);
default:
#ifdef FULLDEBUG
fprintf(outf, "ADDCH: 1: y = %d, x = %d, firstch = %d,"
" lastch = %d\n", y, x, win->_firstch[y],
win->_lastch[y]);
#endif
if (win->_flags & _STANDOUT)
c |= _STANDOUT;
set_ch(win, y, x, c);
win->_y[y][x++] = c;
if (x >= win->_maxx) {
x = 0;
newline:
if (++y >= win->_maxy)
if (win->_scroll) {
(void) scroll(win);
--y;
}
else
return (ERR);
}
#ifdef FULLDEBUG
fprintf(outf, "ADDCH: 2: y = %d, x = %d, firstch = %d,"
" lastch = %d\n", y, x, win->_firstch[y],
win->_lastch[y]);
#endif
break;
case '\n':
(void) wclrtoeol(win);
if (!NONL)
x = 0;
goto newline;
case '\r':
x = 0;
break;
case '\b':
if (--x < 0)
x = 0;
break;
}
win->_curx = (short)x;
win->_cury = (short)y;
return (OK);
}
/*
* set_ch:
* Set the first and last change flags for this window.
*/
static void
set_ch(WINDOW *win, int y, int x, int ch)
{
#ifdef FULLDEBUG
fprintf(outf, "SET_CH(%0.2o, %d, %d)\n", win, y, x);
#endif
if (win->_y[y][x] != ch) {
x += win->_ch_off;
if (win->_firstch[y] == _NOCHANGE)
win->_firstch[y] = win->_lastch[y] = (short)x;
else if (x < win->_firstch[y])
win->_firstch[y] = (short)x;
else if (x > win->_lastch[y])
win->_lastch[y] = (short)x;
#ifdef FULLDEBUG
fprintf(outf, "SET_CH: change gives f/l: %d/%d [%d/%d]\n",
win->_firstch[y], win->_lastch[y],
win->_firstch[y] - win->_ch_off,
win->_lastch[y] - win->_ch_off);
#endif
}
}