break out special local mail processing (e.g., mapping to the

[unix-history] / usr / src / usr.bin / window / wwredrawwin.c

/*
* Copyright (c) 1983, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)wwredrawwin.c       8.1 (Berkeley) %G%";
#endif /* not lint */

#include "ww.h"

wwredrawwin1(w, row1, row2, offset)
register struct ww *w;
int row1, row2, offset;
{
       int row;
       register col;
       register char *smap;
       register union ww_char *buf;
       register char *win;
       register union ww_char *ns;
       int x;
       int nchanged;

       for (row = row1; row < row2; row++) {
               col = w->ww_i.l;
               ns = wwns[row];
               smap = &wwsmap[row][col];
               buf = w->ww_buf[row + offset];
               win = w->ww_win[row];
               nchanged = 0;
               for (; col < w->ww_i.r; col++)
                       if (*smap++ == w->ww_index &&
                           ns[col].c_w !=
                           (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) {
                               nchanged++;
                               ns[col].c_w = x;
                       }
               if (nchanged > 0)
                       wwtouched[row] |= WWU_TOUCHED;
       }
}