[unix-history] / lib / libcurses / addbytes.c

/*
 * Copyright (c) 1987, 1993
 *	The 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	8.2 (Berkeley) 1/9/94";
#endif	/* not lint */

#include <curses.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, so)
	register WINDOW *win;
	register const char *bytes;
	register int count;
	int so;
{
	static char blanks[] = "        ";
	register int c, newx, x, y;
	char stand;
	__LINE *lp;

	SYNCH_IN;

#ifdef DEBUG
	__CTRACE("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
	__CTRACE("ADDBYTES(%0.2o, %d, %d)\n", win, y, x);
#endif
			
			lp = win->lines[y];
			if (lp->flags & __ISPASTEOL) {
				lp->flags &= ~__ISPASTEOL;
newline:			if (y == win->maxy - 1) {
					if (win->flags & __SCROLLOK) {
						SYNCH_OUT;
						scroll(win);
						SYNCH_IN;
						lp = win->lines[y];
					        x = 0;
					} 
					else
						return ERR;
				} else {
					y++;
					lp = win->lines[y];
					x = 0;
				}
				if (c == '\n')
					break;
			}
				
			stand = '\0';
			if (win->flags & __WSTANDOUT || so)
				stand |= __STANDOUT;
#ifdef DEBUG
	__CTRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n",
	    y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp);
#endif
			if (lp->line[x].ch != c || 
			    !(lp->line[x].attr & stand)) {
				newx = x + win->ch_off;
				if (!(lp->flags & __ISDIRTY)) {
					lp->flags |= __ISDIRTY;
					*lp->firstchp = *lp->lastchp = newx;
				}
				else if (newx < *lp->firstchp)
					*lp->firstchp = newx;
				else if (newx > *lp->lastchp)
					*lp->lastchp = newx;
#ifdef DEBUG
	__CTRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n",
	    *lp->firstchp, *lp->lastchp,
	    *lp->firstchp - win->ch_off,
	    *lp->lastchp - win->ch_off);
#endif
			}
			lp->line[x].ch = c;
			if (stand)
				lp->line[x].attr |= __STANDOUT;
			else
				lp->line[x].attr &= ~__STANDOUT;
			if (x == win->maxx - 1)
				lp->flags |= __ISPASTEOL;
			else
				x++;
#ifdef DEBUG
	__CTRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n",
	    y, x, *win->lines[y]->firstchp, *win->lines[y]->lastchp);
#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);
}
Commit	Line	Data
15637ed4	1	/*
b80b8de3 AC	2	* Copyright (c) 1987, 1993
b80b8de3 AC	3	* The Regents of the University of California. All rights reserved.
15637ed4 RG	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
b80b8de3 AC	35	static char sccsid[] = "@(#)addbytes.c 8.2 (Berkeley) 1/9/94";
b80b8de3 AC	36	#endif /* not lint */
15637ed4	37
b80b8de3	38	#include <curses.h>
15637ed4	39
b80b8de3 AC	40	#define SYNCH_IN {y = win->cury; x = win->curx;}
b80b8de3 AC	41	#define SYNCH_OUT {win->cury = y; win->curx = x;}
5b37262a	42
15637ed4	43	/*
b80b8de3 AC	44	* waddbytes --
b80b8de3 AC	45	* Add the character to the current position in the given window.
15637ed4	46	*/
b80b8de3 AC	47	int
	48	__waddbytes(win, bytes, count, so)
	49	register WINDOW *win;
	50	register const char *bytes;
	51	register int count;
	52	int so;
15637ed4	53	{
b80b8de3 AC	54	static char blanks[] = " ";
	55	register int c, newx, x, y;
	56	char stand;
	57	__LINE *lp;
15637ed4	58
b80b8de3	59	SYNCH_IN;
15637ed4	60
b80b8de3 AC	61	#ifdef DEBUG
	62	__CTRACE("ADDBYTES('%c') at (%d, %d)\n", c, y, x);
	63	#endif
	64	while (count--) {
	65	c = *bytes++;
	66	switch (c) {
	67	case '\t':
	68	SYNCH_OUT;
	69	if (waddbytes(win, blanks, 8 - (x % 8)) == ERR)
	70	return (ERR);
	71	SYNCH_IN;
	72	break;
15637ed4	73
b80b8de3 AC	74	default:
	75	#ifdef DEBUG
	76	__CTRACE("ADDBYTES(%0.2o, %d, %d)\n", win, y, x);
	77	#endif
	78
	79	lp = win->lines[y];
	80	if (lp->flags & __ISPASTEOL) {
	81	lp->flags &= ~__ISPASTEOL;
	82	newline: if (y == win->maxy - 1) {
	83	if (win->flags & __SCROLLOK) {
	84	SYNCH_OUT;
	85	scroll(win);
	86	SYNCH_IN;
	87	lp = win->lines[y];
	88	x = 0;
	89	}
	90	else
	91	return ERR;
	92	} else {
	93	y++;
	94	lp = win->lines[y];
	95	x = 0;
	96	}
	97	if (c == '\n')
	98	break;
	99	}
	100
	101	stand = '\0';
	102	if (win->flags & __WSTANDOUT \|\| so)
	103	stand \|= __STANDOUT;
	104	#ifdef DEBUG
	105	__CTRACE("ADDBYTES: 1: y = %d, x = %d, firstch = %d, lastch = %d\n",
	106	y, x, win->lines[y]->firstchp, win->lines[y]->lastchp);
	107	#endif
	108	if (lp->line[x].ch != c \|\|
	109	!(lp->line[x].attr & stand)) {
	110	newx = x + win->ch_off;
	111	if (!(lp->flags & __ISDIRTY)) {
	112	lp->flags \|= __ISDIRTY;
	113	lp->firstchp = lp->lastchp = newx;
	114	}
	115	else if (newx < *lp->firstchp)
	116	*lp->firstchp = newx;
	117	else if (newx > *lp->lastchp)
	118	*lp->lastchp = newx;
	119	#ifdef DEBUG
	120	__CTRACE("ADDBYTES: change gives f/l: %d/%d [%d/%d]\n",
	121	lp->firstchp, lp->lastchp,
	122	*lp->firstchp - win->ch_off,
	123	*lp->lastchp - win->ch_off);
	124	#endif
	125	}
	126	lp->line[x].ch = c;
	127	if (stand)
	128	lp->line[x].attr \|= __STANDOUT;
	129	else
	130	lp->line[x].attr &= ~__STANDOUT;
	131	if (x == win->maxx - 1)
	132	lp->flags \|= __ISPASTEOL;
	133	else
	134	x++;
	135	#ifdef DEBUG
	136	__CTRACE("ADDBYTES: 2: y = %d, x = %d, firstch = %d, lastch = %d\n",
	137	y, x, win->lines[y]->firstchp, win->lines[y]->lastchp);
138	#endif
139	break;
140	case '\n':
141	SYNCH_OUT;
142	wclrtoeol(win);
143	SYNCH_IN;
144	if (!NONL)
145	x = 0;
146	goto newline;
147	case '\r':
148	x = 0;
149	break;
150	case '\b':
151	if (--x < 0)
152	x = 0;
153	break;
154	}
155	}
156	SYNCH_OUT;
157	return (OK);
15637ed4	158	}