// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
// Name : wcrtomb.cpp
// Part of : MRT LIBC
// Contains the source for the wcrtomb API implementation.
// Version :
//
#include <e32std.h>
#include <utf.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <stdio.h>
#include "wcharcnv.h"
#if (defined(__SYMBIAN32__) && (defined(__WINSCW__) || defined(__WINS__)))
#include "libc_wsd_defs.h"
#endif
#ifdef EMULATOR
GET_STATIC_VAR_FROM_TLS(wcrtomb_mbs, mbstate_t)
#define mbs (*GET_WSD_VAR_NAME(wcrtomb_mbs, s)())
#endif //EMULATOR
//-----------------------------------------------------------------------------
//Function Name : size_t wcrtomb (char * mbchar, wchar_t wc, mbstate_t* ps)
//Description : Converts a wide character to a multibyte character
//Return Value : return If mbchar is null, the return value is true (non-zero)
//if multibyte characters have state-dependent encodings, or false (zero)
//if they do not.
//-----------------------------------------------------------------------------
extern "C" {
EXPORT_C size_t wcrtomb (char * mbchar, wchar_t wc, mbstate_t* ps)
{
#ifndef EMULATOR
static mbstate_t mbs;
#endif //EMULATOR
if (ps == NULL)
ps = &mbs;
mbstate_t *state = NULL;
if(ps)
{
state = ps;
}
else
{
state = &mbs;
}
if (mbchar)
{
//deal with the special null character case
if (L'\0' == wc)
{
*mbchar = '\0';
if ( state )
{
memset(state,0,sizeof(state));
state->__count = _EUTF16InitialState;
}
return (1);
}
//return value of 0 is possible if the first half of a surrogate pair seen
//crash is possible if mbchar is not at least MB_CUR_MAX bytes long
return _Utf16ToUtf8(mbchar,wc, state,MB_CUR_MAX);
}
//calling with a null dest string is used to initialise shift state
//effect is exactly as if internal dst buffer was used.
//therefore we always return 1.
else
{
if ( state )
{
memset(state,0,sizeof(state));
state->__count = _EUTF16InitialState;
}
return (1);
}
} //end of function
} //extern "C"