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/* $NetBSD: in_wchstr.c,v 1.3 2009/07/22 16:57:14 roy Exp $ */
/*
* Copyright (c) 2005 The NetBSD Foundation Inc.
* All rights reserved.
*
* This code is derived from code donated to the NetBSD Foundation
* by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
*
*
* 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. Neither the name of the NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: in_wchstr.c,v 1.3 2009/07/22 16:57:14 roy Exp $");
#endif /* not lint */
#include "curses.h"
#include "curses_private.h"
/*
* in_wchstr, in_wchnstr --
* Return an array of wide characters at cursor position from stdscr.
*/
__warn_references(in_wchstr,
"warning: this program uses in_wchstr(), which is unsafe.")
int
in_wchstr(cchar_t *wchstr)
{
#ifndef HAVE_WCHAR
return ERR;
#else
return win_wchstr(stdscr, wchstr);
#endif /* HAVE_WCHAR */
}
int
in_wchnstr(cchar_t *wchstr, int n)
{
#ifndef HAVE_WCHAR
return ERR;
#else
return win_wchnstr(stdscr, wchstr, n);
#endif /* HAVE_WCHAR */
}
/*
* mvin_wchstr, mv_winchnstr --
* Return an array of wide characters at position (y, x) from stdscr.
*/
__warn_references(mvin_wchstr,
"warning: this program uses mvin_wchstr(), which is unsafe.")
int
mvin_wchstr(int y, int x, cchar_t *wchstr)
{
#ifndef HAVE_WCHAR
return ERR;
#else
return mvwin_wchstr(stdscr, y, x, wchstr);
#endif /* HAVE_WCHAR */
}
int
mvin_wchnstr(int y, int x, cchar_t *wchstr, int n)
{
#ifndef HAVE_WCHAR
return ERR;
#else
return mvwin_wchnstr(stdscr, y, x, wchstr, n);
#endif /* HAVE_WCHAR */
}
/*
* mvwin_wchstr, mvwin_wchnstr --
* Return an array wide characters at position (y, x) from the given window.
*/
__warn_references(mvwin_wchstr,
"warning: this program uses mvwin_wchstr(), which is unsafe.")
int
mvwin_wchstr(WINDOW *win, int y, int x, cchar_t *wchstr)
{
#ifndef HAVE_WCHAR
return ERR;
#else
if (wmove(win, y, x) == ERR)
return ERR;
return win_wchstr(win, wchstr);
#endif /* HAVE_WCHAR */
}
int
mvwin_wchnstr(WINDOW *win, int y, int x, cchar_t *wchstr, int n)
{
#ifndef HAVE_WCHAR
return ERR;
#else
if (wmove(win, y, x) == ERR)
return ERR;
return win_wchnstr(win, wchstr, n);
#endif /* HAVE_WCHAR */
}
/*
* win_wchstr, win_wchnstr --
* Return an array of characters at cursor position.
*/
__warn_references(win_wchstr,
"warning: this program uses win_wchstr(), which is unsafe.")
int
win_wchstr(WINDOW *win, cchar_t *wchstr)
{
#ifndef HAVE_WCHAR
return ERR;
#else
return win_wchnstr(win, wchstr, -1);
#endif /* HAVE_WCHAR */
}
/*
* - SUSv2/xcurses doesn't document whether the trailing 0 is included
* in the length count or not. For safety's sake it _is_ included.
*/
int
win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
{
#ifndef HAVE_WCHAR
return ERR;
#else
__LDATA *start;
int x = 0, cw = 0, cnt = 0;
cchar_t *wcp;
nschar_t *np;
if (wchstr == NULL)
return ERR;
start = &win->alines[win->cury]->line[win->curx];
x = win->curx;
cw = WCOL(*start);
if (cw < 0) {
start += cw;
x += cw;
}
wcp = wchstr;
/* (n - 1) to leave room for the trailing 0 element */
while ((x < win->maxx) && ((n < 0) || ((n > 1) && (cnt < n - 1)))) {
cw = WCOL( *start );
wcp->vals[ 0 ] = start->ch;
wcp->attributes = start->attr;
wcp->elements = 1;
np = start->nsp;
if (np) {
do {
wcp->vals[ wcp->elements++ ] = np->ch;
np = np->next;
} while ( np );
}
wcp++;
cnt++;
x += cw;
if ( x < win->maxx )
start += cw;
}
wcp->vals[ 0 ] = L'\0';
wcp->elements = 1;
wcp->attributes = win->wattr;
return OK;
#endif /* HAVE_WCHAR */
}
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