/*-

 * Portions Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).All rights reserved. 

 * 

 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>

 *		at Electronni Visti IA, Kiev, Ukraine.

 *			All rights reserved.

 *

 * 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.

 *

 * 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>

__FBSDID("FreeBSD: src/lib/libc/string/strxfrm.c,v 1.15 2002/09/06 11:24:06 tjr Exp ");

__FBSDID("$FreeBSD: src/lib/libc/string/wcsxfrm.c,v 1.3 2004/04/07 09:47:56 tjr Exp $");

#include <stdlib.h>

#include <string.h>

#include <wchar.h>

#ifndef __SYMBIAN32__

#include "libc_collate.h"

#endif //__SYMBIAN32__

#if (defined(__SYMBIAN32__) && (defined(__WINSCW__) || defined(__WINS__)))

#include "libc_wsd_defs.h"

#endif

#ifndef __SYMBIAN32__

static char *__mbsdup(const wchar_t *);

#endif //__SYMBIAN32__

#ifdef __SYMBIAN32__

	extern char  LC_COLLATE_LocaleName[30];

#ifdef EMULATOR

char *GET_WSD_VAR_NAME(LC_COLLATE_LocaleName, g)();

#define LC_COLLATE_LocaleName (GET_WSD_VAR_NAME(LC_COLLATE_LocaleName, g)())

#endif //EMULATOR

#endif //__SYMBIAN32__

/*

 * Placeholder wcsxfrm() implementation. See wcscoll.c for a description of

 * the logic used.

 */

EXPORT_C size_t

wcsxfrm(wchar_t * __restrict dest, const wchar_t * __restrict src, size_t len)

{

#ifndef __SYMBIAN32__	

	int prim, sec, l;

	char *mbsrc, *s, *ss;

#endif//__SYMBIAN32__

	size_t slen;

	if (*src == L'\0') {

		if (len != 0)

			*dest = L'\0';

		return (0);

	}

#ifndef __SYMBIAN32__			

			if (__collate_load_error || MB_CUR_MAX > 1)

#else				

			if(((strcmp("C",(const char*) LC_COLLATE_LocaleName) ==0) ||(strcmp("POSIX", (const char*) LC_COLLATE_LocaleName) ==0)) ||

				MB_CUR_MAX > 1)

#endif	

	{

		slen = wcslen(src);

		if (len > 0) {

			if (slen < len)

				wcscpy(dest, src);

			else {

				wcsncpy(dest, src, len - 1);

				dest[len - 1] = L'\0';

			}

		}

		return (slen);

	}

#ifdef __SYMBIAN32__

	else

	{

		return (0);

	}

#endif //__SYMBIAN32__

#ifndef __SYMBIAN32__

	mbsrc = __mbsdup(src);

	slen = 0;

	prim = sec = 0;

       ss = s = __collate_substitute(mbsrc);

	while (*s != '\0') {

		while (*s != '\0' && prim == 0) {

			__collate_lookup(s, &l, &prim, &sec);

			s += l;

		}

		if (prim != 0) {

			if (len > 1) {

				*dest++ = (wchar_t)prim;

				len--;

			}

			slen++;

			prim = 0;

		}

	}

	free(ss);

	free(mbsrc);

	if (len != 0)

		*dest = L'\0';

	return (slen);

#endif //__SYMBIAN32__	

}

#ifndef __SYMBIAN32__

static char *

__mbsdup(const wchar_t *ws)

{

	static const mbstate_t initial = {0,{0}};

	mbstate_t st;

	const wchar_t *wcp;

	size_t len;

	char *mbs;

	wcp = ws;

	st = initial;

	if ((len = wcsrtombs(NULL, &wcp, 0, &st)) == (size_t)-1)

		return (NULL);

	if ((mbs = malloc(len + 1)) == NULL)

		return (NULL);

	st = initial;

	wcsrtombs(mbs, &ws, len + 1, &st);

	return (mbs);

}

#endif //__SYMBIAN32__