/*	$NetBSD: src/lib/libc/locale/iswctype.c,v 1.14 2003/08/07 16:43:04 agc Exp $	*/
/*	$DragonFly: src/lib/libc/locale/iswctype.c,v 1.1 2005/03/16 06:54:41 joerg Exp $ */

/*
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * 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 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
 * SUCH DAMAGE.
 */

#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <wchar.h>
#include <wctype.h>
#include "rune.h"
#include "runetype.h"
#include "rune_local.h"
#include "_wctrans_local.h"

static _RuneType __runetype_w(wint_t);
static int	__isctype_w(wint_t, _RuneType);
static wint_t	__toupper_w(wint_t);
static wint_t	__tolower_w(wint_t);

static _RuneType
__runetype_w(wint_t c)
{
	_RuneLocale *rl = _CurrentRuneLocale;

	if (_RUNE_ISCACHED(c))
		return(rl->rl_runetype[c]);
	else
		return(___runetype_mb(c));
}

static int
__isctype_w(wint_t c, _RuneType f)
{
	if (__runetype_w(c) & f)
		return(1);
	else
		return(0);
}

static wint_t
__toupper_w(wint_t c)
{
	return(_towctrans(c, _wctrans_upper(_CurrentRuneLocale)));
}

static wint_t
__tolower_w(wint_t c)
{
	return(_towctrans(c, _wctrans_lower(_CurrentRuneLocale)));
}

#undef iswalnum
int
iswalnum(wint_t c)
{
	return(__isctype_w((c), _CTYPE_A|_CTYPE_D));
}

#undef iswalpha
int
iswalpha(wint_t c)
{
	return(__isctype_w((c), _CTYPE_A));
}

#undef iswblank
int
iswblank(wint_t c)
{
	return(__isctype_w((c), _CTYPE_B));
}

#undef iswcntrl
int
iswcntrl(wint_t c)
{
	return(__isctype_w((c), _CTYPE_C));
}

#undef iswdigit
int
iswdigit(wint_t c)
{
	return(__isctype_w((c), _CTYPE_D));
}

#undef iswgraph
int
iswgraph(wint_t c)
{
	return(__isctype_w((c), _CTYPE_G));
}

#undef iswlower
int
iswlower(wint_t c)
{
	return(__isctype_w((c), _CTYPE_L));
}

#undef iswprint
int
iswprint(wint_t c)
{
	return(__isctype_w((c), _CTYPE_R));
}

#undef iswpunct
int
iswpunct(wint_t c)
{
	return(__isctype_w((c), _CTYPE_P));
}

#undef iswspace
int
iswspace(wint_t c)
{
	return(__isctype_w((c), _CTYPE_S));
}

#undef iswupper
int
iswupper(wint_t c)
{
	return(__isctype_w((c), _CTYPE_U));
}

#undef iswxdigit
int
iswxdigit(wint_t c)
{
	return(__isctype_w((c), _CTYPE_X));
}

#undef towupper
wint_t
towupper(wint_t c)
{
	return(__toupper_w(c));
}

#undef towlower
wint_t
towlower(wint_t c)
{
	return(__tolower_w(c));
}

#undef wcwidth
int
wcwidth(wchar_t c)
{
        return(((unsigned)__runetype_w(c) & _CTYPE_SWM) >> _CTYPE_SWS);
}

#undef wctrans
wctrans_t
wctrans(const char *charclass)
{
	int i;
	_RuneLocale *rl = _CurrentRuneLocale;

	if (rl->rl_wctrans[_WCTRANS_INDEX_LOWER].te_name == NULL)
		_wctrans_init(rl);

	for (i = 0; i < _WCTRANS_NINDEXES; i++) {
		if (strcmp(rl->rl_wctrans[i].te_name, charclass) == 0)
			return((wctrans_t)&rl->rl_wctrans[i]);
	}

	return((wctrans_t)NULL);
}

#undef towctrans
wint_t
towctrans(wint_t c, wctrans_t desc)
{
	if (desc == NULL) {
		errno = EINVAL;
		return(c);
	}
	return(_towctrans(c, (_WCTransEntry *)desc));
}

#undef wctype
wctype_t
wctype(const char *property)
{
	int i;
	_RuneLocale *rl = _CurrentRuneLocale;

	for (i=0; i < _WCTYPE_NINDEXES; i++) {
		if (strcmp(rl->rl_wctype[i].te_name, property) == 0)
			return((wctype_t)&rl->rl_wctype[i]);
	}
	return((wctype_t)NULL);
}

#undef iswctype
int
iswctype(wint_t c, wctype_t charclass)
{
	/*
	 * SUSv3: If charclass is 0, iswctype() shall return 0.
	 */
	if (charclass == (wctype_t)0)
		return(0);

	return (__isctype_w(c, ((_WCTypeEntry *)charclass)->te_mask));
}