159 lines
4.4 KiB
C
159 lines
4.4 KiB
C
/*
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* Copyright (c) 1987, 1993
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* The Regents of the University of California. 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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/* from: static char sccsid[] = "@(#)addbytes.c 8.1 (Berkeley) 6/11/93"; */
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static char *rcsid = "$Id: addbytes.c,v 1.8 1993/11/09 04:06:46 cgd 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, so)
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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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int so;
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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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char stand;
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__LINE *lp;
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SYNCH_IN;
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#ifdef DEBUG
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__CTRACE("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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__CTRACE("ADDBYTES(%0.2o, %d, %d)\n", win, y, x);
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#endif
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lp = win->lines[y];
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if (lp->flags & __ISPASTEOL) {
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lp->flags &= ~__ISPASTEOL;
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newline: if (y == win->maxy - 1) {
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if (win->flags & __SCROLLOK) {
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SYNCH_OUT;
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scroll(win);
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SYNCH_IN;
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lp = win->lines[y];
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x = 0;
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}
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} else {
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y++;
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lp = win->lines[y];
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x = 0;
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}
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if (c == '\n')
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break;
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}
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stand = '\0';
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if (win->flags & __WSTANDOUT || so)
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stand |= __STANDOUT;
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#ifdef DEBUG
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__CTRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n",
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y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp);
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#endif
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if (lp->line[x].ch != c ||
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!(lp->line[x].attr & stand)) {
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newx = x + win->ch_off;
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if (!(lp->flags & __ISDIRTY)) {
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lp->flags |= __ISDIRTY;
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*lp->firstchp = *lp->lastchp = newx;
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}
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else if (newx < *lp->firstchp)
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*lp->firstchp = newx;
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else if (newx > *lp->lastchp)
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*lp->lastchp = newx;
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#ifdef DEBUG
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__CTRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n",
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*lp->firstchp, *lp->lastchp,
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*lp->firstchp - win->ch_off,
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*lp->lastchp - win->ch_off);
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#endif
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}
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lp->line[x].ch = c;
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if (stand)
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lp->line[x].attr |= __STANDOUT;
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else
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lp->line[x].attr &= ~__STANDOUT;
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if (x == win->maxx - 1)
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lp->flags |= __ISPASTEOL;
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else
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x++;
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#ifdef DEBUG
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__CTRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n",
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y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp);
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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 (!NONL)
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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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