* Copyright (c) 1983 Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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
static char sccsid
[] = "@(#)wwinschar.c 3.20 (Berkeley) 6/6/90";
wwinschar(w
, row
, col
, c
, m
)
short x
= c
| m
<< WWC_MSHIFT
;
register union ww_char
*p
, *q
;
p
= &w
->ww_buf
[row
][w
->ww_b
.r
];
for (i
= w
->ww_b
.r
- col
; --i
> 0;)
* If can't see it, just return.
if (row
< w
->ww_i
.t
|| row
>= w
->ww_i
.b
|| w
->ww_i
.r
<= 0 || w
->ww_i
.r
<= col
)
* Now find out how much is actually changed, and fix wwns.
register union ww_char
*buf
;
register union ww_char
*ns
;
smap
= &wwsmap
[row
][col
];
for (i
= col
; i
< w
->ww_i
.r
&& *smap
++ != w
->ww_index
; i
++)
touched
= wwtouched
[row
];
for (; i
< w
->ww_i
.r
; i
++) {
if (*smap
++ != w
->ww_index
)
buf
[i
].c_w
^ win
[i
] << WWC_MSHIFT
;
wwtouched
[row
] = touched
;
* Can/Should we use delete character?
if ((tt
.tt_inschar
|| tt
.tt_insspace
) && nvis
> (wwncol
- col
) / 2) {
register union ww_char
*p
, *q
;
xxinschar(row
, col
, c
, m
);
for (i
= wwncol
- col
; --i
> 0;)