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- /*
- * Copyright (c) 1987 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)addbytes.c 5.3 (Berkeley) 6/30/88";
- #endif /* not lint */
-
- # include "curses.ext"
-
- /*
- * This routine adds the character to the current position
- *
- */
- int 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;
- }
-