/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// no include "precompiled_tools.hxx" because this is included in other cxx files.

// =======================================================================

void UniString::InitStringRes( const char* pUTF8Str, sal_Int32 nLen )
{
	DBG_CTOR( UniString, DbgCheckUniString );
    OSL_ENSURE(nLen <= STRING_MAXLEN, "Overflowing UniString");

	mpData = NULL;
	rtl_string2UString( (rtl_uString **)(&mpData),
						pUTF8Str, nLen,
						RTL_TEXTENCODING_UTF8,
						RTL_TEXTTOUNICODE_FLAGS_UNDEFINED_MAPTOPRIVATE |
						RTL_TEXTTOUNICODE_FLAGS_MBUNDEFINED_DEFAULT |
						RTL_TEXTTOUNICODE_FLAGS_INVALID_DEFAULT );
}

// =======================================================================

UniString::UniString( const ByteString& rByteStr, rtl_TextEncoding eTextEncoding, sal_uInt32 nCvtFlags )
{
	DBG_CTOR( UniString, DbgCheckUniString );
	DBG_CHKOBJ( &rByteStr, ByteString, DbgCheckByteString );

	mpData = NULL;
	rtl_string2UString( (rtl_uString **)(&mpData),
						rByteStr.mpData->maStr, rByteStr.mpData->mnLen,
						eTextEncoding, nCvtFlags );
}

// -----------------------------------------------------------------------

UniString::UniString( const ByteString& rByteStr, xub_StrLen nPos, xub_StrLen nLen,
					  rtl_TextEncoding eTextEncoding, sal_uInt32 nCvtFlags )
{
	DBG_CTOR( UniString, DbgCheckUniString );
	DBG_CHKOBJ( &rByteStr, ByteString, DbgCheckByteString );

	// Stringlaenge ermitteln
	if ( nPos > rByteStr.mpData->mnLen )
		nLen = 0;
	else
	{
		// Laenge korrigieren, wenn noetig
		sal_Int32 nMaxLen = rByteStr.mpData->mnLen-nPos;
		if ( nLen > nMaxLen )
			nLen = static_cast< xub_StrLen >(nMaxLen);
	}

	mpData = NULL;
	rtl_string2UString( (rtl_uString **)(&mpData),
						rByteStr.mpData->maStr+nPos, nLen,
						eTextEncoding, nCvtFlags );
}

// -----------------------------------------------------------------------

UniString::UniString( const char* pByteStr,
					  rtl_TextEncoding eTextEncoding, sal_uInt32 nCvtFlags )
{
	DBG_CTOR( UniString, DbgCheckUniString );
	DBG_ASSERT( pByteStr, "UniString::UniString() - pByteStr is NULL" );

	mpData = NULL;
	rtl_string2UString( (rtl_uString **)(&mpData),
						pByteStr, ImplStringLen( pByteStr ),
						eTextEncoding, nCvtFlags );
}

// -----------------------------------------------------------------------

UniString::UniString( const char* pByteStr, xub_StrLen nLen,
					  rtl_TextEncoding eTextEncoding, sal_uInt32 nCvtFlags )
{
	DBG_CTOR( UniString, DbgCheckUniString );
	DBG_ASSERT( pByteStr, "UniString::UniString() - pByteStr is NULL" );

	if ( nLen == STRING_LEN )
		nLen = ImplStringLen( pByteStr );

	mpData = NULL;
	rtl_string2UString( (rtl_uString **)(&mpData),
						pByteStr, nLen,
						eTextEncoding, nCvtFlags );
}

// =======================================================================

UniString::UniString( const rtl::OUString& rStr )
	: mpData(NULL)
{
	DBG_CTOR( UniString, DbgCheckUniString );

    OSL_ENSURE(rStr.pData->length < STRING_MAXLEN,
               "Overflowing rtl::OUString -> UniString cut to zero length");


	if (rStr.pData->length < STRING_MAXLEN)
	{
	    mpData = reinterpret_cast< UniStringData * >(const_cast< rtl::OUString & >(rStr).pData);
	    STRING_ACQUIRE((STRING_TYPE *)mpData);
	}
	else
	{
		STRING_NEW((STRING_TYPE **)&mpData);
	}
}

// -----------------------------------------------------------------------

UniString& UniString::Assign( const rtl::OUString& rStr )
{
	DBG_CHKTHIS( UniString, DbgCheckUniString );

    OSL_ENSURE(rStr.pData->length < STRING_MAXLEN,
               "Overflowing rtl::OUString -> UniString cut to zero length");
    
	
	if (rStr.pData->length < STRING_MAXLEN)
	{
	    STRING_RELEASE((STRING_TYPE *)mpData);
	    mpData = reinterpret_cast< UniStringData * >(const_cast< rtl::OUString & >(rStr).pData);
	    STRING_ACQUIRE((STRING_TYPE *)mpData);
	}
	else
	{
		STRING_NEW((STRING_TYPE **)&mpData);
	}

	return *this;
}

UniString UniString::intern() const
{
    UniString aStr;

    rtl_uString_intern( reinterpret_cast<rtl_uString **>(&aStr.mpData),
                        (rtl_uString *)(mpData) );

    return aStr;
}

// =======================================================================

#include <tools/rc.hxx>
#include <tools/rcid.h>

UniString::UniString( const ResId& rResId )
{
    rResId.SetRT( RSC_STRING );
    ResMgr* pResMgr = rResId.GetResMgr();
    mpData = NULL;
    if ( pResMgr && pResMgr->GetResource( rResId ) )
    {
        // String laden
        RSHEADER_TYPE * pResHdr = (RSHEADER_TYPE*)pResMgr->GetClass();
        //sal_uInt32 nLen = pResHdr->GetLocalOff() - sizeof( RSHEADER_TYPE );

        sal_Int32 nStringLen = rtl_str_getLength( (char*)(pResHdr+1) );
        InitStringRes( (const char*)(pResHdr+1), nStringLen );

        sal_uInt32 nSize = sizeof( RSHEADER_TYPE )
            + sal::static_int_cast< sal_uInt32 >(nStringLen) + 1;
        nSize += nSize % 2;
        pResMgr->Increment( nSize );
    }
    else
    {
		STRING_NEW((STRING_TYPE **)&mpData);

#if OSL_DEBUG_LEVEL > 0
        *this = UniString::CreateFromAscii( "<resource id " );
        Append( UniString::CreateFromInt32( rResId.GetId() ) );
        AppendAscii( " not found>" );
#endif
        if( pResMgr )
            pResMgr->PopContext();
    }
        

    ResHookProc pImplResHookProc = ResMgr::GetReadStringHook();
    if ( pImplResHookProc )
        pImplResHookProc( *this );
}