135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/*
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* Copyright (c) 1987 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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/*static char sccsid[] = "from: @(#)addbytes.c 5.8 (Berkeley) 8/28/92";*/
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static char rcsid[] = "$Id: addbytes.c,v 1.6 1993/08/15 16:23:57 mycroft Exp $";
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#endif /* not lint */
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#include <curses.h>
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#include <termios.h>
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#define SYNCH_IN {y = win->_cury; x = win->_curx;}
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#define SYNCH_OUT {win->_cury = y; win->_curx = x;}
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/*
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* waddbytes --
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* Add the character to the current position in the given window.
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*/
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int
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waddbytes(win, bytes, count)
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register WINDOW *win;
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register const char *bytes;
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register int count;
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{
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static char blanks[] = " ";
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register int c, newx, x, y;
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SYNCH_IN;
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#ifdef DEBUG
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__TRACE("ADDBYTES('%c') at (%d, %d)\n", c, y, x);
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#endif
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while (count--) {
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c = *bytes++;
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switch (c) {
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case '\t':
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SYNCH_OUT;
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if (waddbytes(win, blanks, 8 - (x % 8)) == ERR)
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return (ERR);
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SYNCH_IN;
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break;
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default:
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#ifdef DEBUG
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__TRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n",
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y, x, win->_firstch[y], win->_lastch[y]);
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#endif
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if (win->_flags & _STANDOUT)
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c |= _STANDOUT;
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#ifdef DEBUG
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__TRACE("ADDBYTES(%0.2o, %d, %d)\n", win, y, x);
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#endif
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if (win->_y[y][x] != c) {
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newx = x + win->_ch_off;
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if (win->_firstch[y] == _NOCHANGE)
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win->_firstch[y] =
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win->_lastch[y] = newx;
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else if (newx < win->_firstch[y])
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win->_firstch[y] = newx;
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else if (newx > win->_lastch[y])
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win->_lastch[y] = newx;
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#ifdef DEBUG
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__TRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n",
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win->_firstch[y], win->_lastch[y],
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win->_firstch[y] - win->_ch_off,
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win->_lastch[y] - win->_ch_off);
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#endif
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}
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win->_y[y][x] = c;
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if (++x >= win->_maxx) {
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x = 0;
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newline: if (++y >= win->_maxy)
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if (win->_scroll) {
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SYNCH_OUT;
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scroll(win);
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SYNCH_IN;
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--y;
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} else
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return (ERR);
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}
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#ifdef DEBUG
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__TRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n",
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y, x, win->_firstch[y], win->_lastch[y]);
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#endif
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break;
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case '\n':
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SYNCH_OUT;
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wclrtoeol(win);
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SYNCH_IN;
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if (origtermio.c_oflag & ONLCR)
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x = 0;
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goto newline;
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case '\r':
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x = 0;
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break;
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case '\b':
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if (--x < 0)
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x = 0;
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break;
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}
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}
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SYNCH_OUT;
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return (OK);
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}
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