When compiling with -O3 gcc seems to be a lot stricter on its checks for index out of bounds error. Change-Id: I5a63e1db6aa2375223ff13c6352643a9804fa93d
136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/* $NetBSD: copywin.c,v 1.15 2009/07/22 16:57:14 roy Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1998-1999 Brett Lymn
|
|
* (blymn@baea.com.au, brett_lymn@yahoo.com.au)
|
|
* All rights reserved.
|
|
*
|
|
* This code has been donated to The NetBSD Foundation by the Author.
|
|
*
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__RCSID("$NetBSD: copywin.c,v 1.15 2009/07/22 16:57:14 roy Exp $");
|
|
#endif /* not lint */
|
|
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include "curses.h"
|
|
#include "curses_private.h"
|
|
|
|
/*
|
|
* copywin --
|
|
* Copy the box starting at (sminrow, smincol) with a size that
|
|
* matches the destination box (dminrow, dmincol) by (dmaxrow, dmaxcol)
|
|
* from the source window srcwin to the destination window dstwin.
|
|
* All these coordindinates are relative to the relevant window.
|
|
* If dooverlay is true then the copy is nondestructive otherwise the
|
|
* copy is destructive.
|
|
*/
|
|
int copywin(const WINDOW *srcwin, WINDOW *dstwin,
|
|
int sminrow, int smincol,
|
|
int dminrow, int dmincol, int dmaxrow, int dmaxcol, int dooverlay)
|
|
{
|
|
int dcol;
|
|
__LDATA *sp, *end;
|
|
#ifdef HAVE_WCHAR
|
|
cchar_t cc;
|
|
nschar_t *np;
|
|
#endif /* HAVE_WCHAR */
|
|
|
|
/* overwrite() and overlay() can come here with -ve srcwin coords */
|
|
if (sminrow < 0) {
|
|
dminrow -= sminrow;
|
|
sminrow = 0;
|
|
}
|
|
if (smincol < 0) {
|
|
dmincol -= smincol;
|
|
smincol = 0;
|
|
}
|
|
|
|
/* for symmetry allow dstwin coords to be -ve as well */
|
|
if (dminrow < 0) {
|
|
sminrow -= dminrow;
|
|
dminrow = 0;
|
|
}
|
|
if (dmincol < 0) {
|
|
smincol -= dmincol;
|
|
dmincol = 0;
|
|
}
|
|
|
|
/* Bound dmaxcol for both windows (should be ok for dstwin) */
|
|
if (dmaxcol >= dstwin->maxx)
|
|
dmaxcol = dstwin->maxx - 1;
|
|
if (smincol + (dmaxcol - dmincol) >= srcwin->maxx)
|
|
dmaxcol = srcwin->maxx + dmincol - smincol - 1;
|
|
if (dmaxcol < dmincol)
|
|
/* nothing in the intersection */
|
|
return OK;
|
|
|
|
/* Bound dmaxrow for both windows (should be ok for dstwin) */
|
|
if (dmaxrow >= dstwin->maxy)
|
|
dmaxrow = dstwin->maxy - 1;
|
|
if (sminrow + (dmaxrow - dminrow) >= srcwin->maxy)
|
|
dmaxrow = srcwin->maxy + dminrow - sminrow - 1;
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW,
|
|
"copywin %s mode: from (%d,%d) to (%d,%d-%d,%d)\n",
|
|
dooverlay ? "overlay" : "overwrite",
|
|
sminrow, smincol, dminrow, dmincol, dmaxrow, dmaxcol);
|
|
#endif
|
|
|
|
for (; dminrow <= dmaxrow; sminrow++, dminrow++) {
|
|
sp = &srcwin->alines[sminrow]->line[smincol];
|
|
end = sp + dmaxcol - dmincol;
|
|
for (dcol = dmincol; sp <= end; dcol++, sp++) {
|
|
/* XXX: Perhaps this should check for the
|
|
* background character
|
|
*/
|
|
if ((dooverlay && !isspace(sp->ch)) || !dooverlay) {
|
|
wmove(dstwin, dminrow, dcol);
|
|
#ifndef HAVE_WCHAR
|
|
__waddch(dstwin, sp);
|
|
#else
|
|
cc.vals[0] = sp->ch;
|
|
cc.attributes = sp->attr;
|
|
cc.elements = 1;
|
|
np = sp->nsp;
|
|
if (np) {
|
|
/* MINIX: off-by one error, has to be strictly less than. */
|
|
while (np && cc.elements <
|
|
CURSES_CCHAR_MAX) {
|
|
cc.vals[cc.elements++] = np->ch;
|
|
np = np->next;
|
|
}
|
|
}
|
|
wadd_wch(dstwin, &cc);
|
|
#endif /* HAVE_WCHAR */
|
|
}
|
|
}
|
|
}
|
|
__touchwin(dstwin);
|
|
return OK;
|
|
}
|
|
|