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File: [cvs.NetBSD.org] / src / lib / libcurses / in_wch.c (download)

Revision 1.5, Thu Nov 22 22:16:45 2018 UTC (5 years, 4 months ago) by uwe
Branch: MAIN
CVS Tags: pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126
Changes since 1.4: +2 -18 lines

Drop HAVE_WCHAR ifdefs from code that is not even compiled with !HAVE_WCHAR.

We still try to mainain the ability to build our curses with
!HAVE_WCHAR, but it doesn't make sense to provide stubs for new wide
API functions that just error out when !HAVE_WCHAR.  Any code that
only uses old API (and can work with !HAVE_WCHAR curses) doesn't use
those new functions.  The code that uses new API obviosly cannot work
when all the new API is stubbed out.

So the plan is to drop the stubs.  This commit does that for files
that are not even compiled with !HAVE_WCHAR (not only those stubs are
useless, they were not even there to begin with).

Same object code is generated for the normal HAVE_WCHAR case.  Nothing
is even recompiled for !HAVE_WCHAR.

Ok by blymn@ jdc@ roy@

/*   $NetBSD: in_wch.c,v 1.5 2018/11/22 22:16:45 uwe 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_wch.c,v 1.5 2018/11/22 22:16:45 uwe Exp $");
#endif						  /* not lint */

#include "curses.h"
#include "curses_private.h"

/*
 * in_wch --
 *	Return wide character at cursor position from stdscr.
 */
int
in_wch(cchar_t *wcval)
{
	return win_wch(stdscr, wcval);
}

/*
 * mvin_wch --
 *  Return wide character at position (y, x) from stdscr.
 */
int
mvin_wch(int y, int x, cchar_t *wcval)
{
	return mvwin_wch(stdscr, y, x, wcval);
}

/*
 * mvwin_wch --
 *  Return wide character at position (y, x) from the given window.
 */
int
mvwin_wch(WINDOW *win, int y, int x, cchar_t *wcval)
{
	if (wmove(win, y, x) == ERR)
		return ERR;

	return win_wch(win, wcval);
}

/*
 * win_wch --
 *	Return wide character at cursor position.
 */
int
win_wch(WINDOW *win, cchar_t *wcval)
{
	nschar_t *np;
	__LDATA *lp = &win->alines[win->cury]->line[win->curx];
	int cw = WCOL(*lp);

	if (cw < 0)
		lp += cw;
	wcval->vals[0] = lp->ch;
	wcval->attributes = lp->attr;
	wcval->elements = 1;
	np = lp->nsp;
	if (np) {
		do {
			wcval->vals[wcval->elements++] = np->ch;
			np = np-> next;
		} while (np);
	}

	return OK;
}