NetBSD/lib/libcurses/addbytes.c

136 lines
4.1 KiB
C

/*
* Copyright (c) 1987 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[] = "@(#)addbytes.c 5.4 (Berkeley) 6/1/90";
#endif /* not lint */
# include "curses.ext"
/*
* This routine adds the character to the current position
*
*/
waddbytes(win, bytes, count)
reg WINDOW *win;
reg char *bytes;
reg int count;
{
#define SYNCH_OUT() {win->_cury = y; win->_curx = x;}
#define SYNCH_IN() {y = win->_cury; x = win->_curx;}
reg int x, y;
reg int newx;
SYNCH_IN();
# ifdef FULLDEBUG
fprintf(outf, "ADDBYTES('%c') at (%d, %d)\n", c, y, x);
# endif
while (count--) {
register int c;
static char blanks[] = " ";
c = *bytes++;
switch (c) {
case '\t':
SYNCH_OUT();
if (waddbytes(win, blanks, 8-(x%8)) == ERR) {
return ERR;
}
SYNCH_IN();
break;
default:
# ifdef FULLDEBUG
fprintf(outf, "ADDBYTES: 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;
{
# ifdef FULLDEBUG
fprintf(outf, "ADDBYTES(%0.2o, %d, %d)\n", win, y, x);
# endif
if (win->_y[y][x] != c) {
newx = x + win->_ch_off;
if (win->_firstch[y] == _NOCHANGE) {
win->_firstch[y] =
win->_lastch[y] = newx;
} else if (newx < win->_firstch[y])
win->_firstch[y] = newx;
else if (newx > win->_lastch[y])
win->_lastch[y] = newx;
# ifdef FULLDEBUG
fprintf(outf, "ADDBYTES: 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
}
}
win->_y[y][x++] = c;
if (x >= win->_maxx) {
x = 0;
newline:
if (++y >= win->_maxy)
if (win->_scroll) {
SYNCH_OUT();
scroll(win);
SYNCH_IN();
--y;
}
else
return ERR;
}
# ifdef FULLDEBUG
fprintf(outf, "ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]);
# endif
break;
case '\n':
SYNCH_OUT();
wclrtoeol(win);
SYNCH_IN();
if (!NONL)
x = 0;
goto newline;
case '\r':
x = 0;
break;
case '\b':
if (--x < 0)
x = 0;
break;
}
}
SYNCH_OUT();
return OK;
}