/*
 * 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.
 */
#include "XalanToXercesTranscoderWrapper.hpp"


#include <cassert>


#include <xercesc/util/TransService.hpp>
#include <xercesc/util/XMLException.hpp>

#include <xalanc/Include/XalanMemMgrAutoPtr.hpp>


typedef xercesc::XMLException     XMLExceptionType;


namespace XALAN_CPP_NAMESPACE {


XalanToXercesTranscoderWrapper::XalanToXercesTranscoderWrapper(
            MemoryManager&      theManager,
            XMLTranscoderType&  theTranscoder) :
    XalanOutputTranscoder(theManager),
    m_transcoder(&theTranscoder)
{
}


XalanToXercesTranscoderWrapper*
XalanToXercesTranscoderWrapper::create(
            MemoryManager&      theManager,
            XMLTranscoderType&  theTranscoder)
{
    typedef XalanToXercesTranscoderWrapper  ThisType;

    XalanAllocationGuard    theGuard(theManager, theManager.allocate(sizeof(ThisType)));

    ThisType* const     theResult =
        new (theGuard.get()) ThisType(
                        theManager,
                        theTranscoder);

    theGuard.release();

    return theResult;
}


XalanToXercesTranscoderWrapper::~XalanToXercesTranscoderWrapper()
{
    delete m_transcoder;
}


XalanToXercesTranscoderWrapper::eCode
XalanToXercesTranscoderWrapper::transcode(
            const XalanDOMChar*     theSourceData,
            size_type               theSourceCount,
            XalanXMLByte*           theTarget,
            size_type               theTargetSize,
            size_type&              theSourceCharsTranscoded,
            size_type&              theTargetBytesUsed)
{
    eCode   theCode = XalanTranscodingServices::OK;

    try
    {
        theTargetBytesUsed = m_transcoder->transcodeTo(
            theSourceData,
            theSourceCount,
            theTarget,
            theTargetSize,
            theSourceCharsTranscoded,
            // $$$ ToDo: Eventually, we're going to want to
            // replace this with UnRep_Throw, and let the
            // caller try to recover.
//          XMLTranscoderType::UnRep_Throw);
            XMLTranscoderType::UnRep_RepChar);
    }
    catch(const XMLExceptionType&)
    {
        theSourceCharsTranscoded = 0;
        theTargetBytesUsed = 0;
        theCode = XalanTranscodingServices::InternalFailure;
    }

    return theCode;
}


XalanToXercesTranscoderWrapper::eCode
XalanToXercesTranscoderWrapper::transcode(
            const XalanXMLByte*     theSourceData,
            size_type               theSourceCount,
            XalanDOMChar*           theTarget,
            size_type               theTargetSize,
            size_type&              theSourceCharsTranscoded,
            size_type&              theTargetBytesUsed,
            unsigned char*          theCharSizes)
{
    eCode   theCode = XalanTranscodingServices::OK;

    try
    {
        theTargetBytesUsed =
                m_transcoder->transcodeFrom(
            theSourceData,
            theSourceCount,
            theTarget,
            theTargetSize,
            theSourceCharsTranscoded,
            theCharSizes);
    }
    catch(const XMLExceptionType&)
    {
        theSourceCharsTranscoded = 0;
        theTargetBytesUsed = 0;
        theCode = XalanTranscodingServices::InternalFailure;
    }

    return theCode;
}


bool
XalanToXercesTranscoderWrapper::canTranscodeTo(XalanUnicodeChar     theChar) const
{
    return m_transcoder->canTranscodeTo(theChar);
}


}