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- /*
- * 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 5.8 (Berkeley) 8/28/92";
- #endif /* not lint */
-
- #include <curses.h>
- #include <termios.h>
-
- #define SYNCH_IN {y = win->_cury; x = win->_curx;}
- #define SYNCH_OUT {win->_cury = y; win->_curx = x;}
-
- /*
- * waddbytes --
- * Add the character to the current position in the given window.
- */
- int
- waddbytes(win, bytes, count)
- register WINDOW *win;
- register char *bytes;
- register int count;
- {
- static char blanks[] = " ";
- register int c, newx, x, y;
-
- SYNCH_IN;
-
- #ifdef DEBUG
- __TRACE("ADDBYTES('%c') at (%d, %d)\n", c, y, x);
- #endif
- while (count--) {
- c = *bytes++;
- switch (c) {
- case '\t':
- SYNCH_OUT;
- if (waddbytes(win, blanks, 8 - (x % 8)) == ERR)
- return (ERR);
- SYNCH_IN;
- break;
-
- default:
- #ifdef DEBUG
- __TRACE("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 DEBUG
- __TRACE("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 DEBUG
- __TRACE("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 DEBUG
- __TRACE("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 (origtermio.c_oflag & ONLCR)
- x = 0;
- goto newline;
- case '\r':
- x = 0;
- break;
- case '\b':
- if (--x < 0)
- x = 0;
- break;
- }
- }
- SYNCH_OUT;
- return (OK);
- }
-