FreeCAD

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/***************************************************************************
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 *   Copyright (c) 2011 Jürgen Riegel <juergen.riegel@web.de>              *
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 *                                                                         *
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 *   This file is part of the FreeCAD CAx development system.              *
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 *                                                                         *
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 *   This library is free software; you can redistribute it and/or         *
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 *   modify it under the terms of the GNU Library General Public           *
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 *   License as published by the Free Software Foundation; either          *
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 *   version 2 of the License, or (at your option) any later version.      *
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 *                                                                         *
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 *   This library  is distributed in the hope that it will be useful,      *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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 *   GNU Library General Public License for more details.                  *
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 *                                                                         *
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 *   You should have received a copy of the GNU Library General Public     *
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 *   License along with this library; see the file COPYING.LIB. If not,    *
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 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
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 *   Suite 330, Boston, MA  02111-1307, USA                                *
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 *                                                                         *
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 ***************************************************************************/
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#include "PreCompiled.h"
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#include "XMLTools.h"
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using namespace Base;
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XERCES_CPP_NAMESPACE_USE
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std::unique_ptr<XMLTranscoder> XMLTools::transcoder;  // NOLINT
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void XMLTools::initialize()
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{
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    if (!transcoder) {
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        XMLTransService::Codes res {};
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        transcoder.reset(XMLPlatformUtils::fgTransService->makeNewTranscoderFor(
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            XMLRecognizer::UTF_8,
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            res,
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            4096,
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            XMLPlatformUtils::fgMemoryManager));
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        if (res != XMLTransService::Ok) {
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            throw Base::UnicodeError("Can't create transcoder");
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        }
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    }
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}
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std::string XMLTools::toStdString(const XMLCh* const toTranscode)
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{
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    std::string str;
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    initialize();
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    // char outBuff[128];
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    static XMLByte outBuff[128];
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    XMLSize_t outputLength = 0;
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    XMLSize_t eaten = 0;
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    XMLSize_t offset = 0;
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    XMLSize_t inputLength = XMLString::stringLen(toTranscode);
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    while (inputLength) {
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        outputLength = transcoder->transcodeTo(toTranscode + offset,
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                                               inputLength,
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                                               outBuff,
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                                               128,
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                                               eaten,
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                                               XMLTranscoder::UnRep_RepChar);
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        // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
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        str.append(reinterpret_cast<const char*>(outBuff), outputLength);
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        offset += eaten;
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        inputLength -= eaten;
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        //  Bail out if nothing more was produced
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        if (outputLength == 0) {
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            break;
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        }
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    }
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    return str;
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}
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std::basic_string<XMLCh> XMLTools::toXMLString(const char* const fromTranscode)
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{
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    std::basic_string<XMLCh> str;
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    if (!fromTranscode) {
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        return str;
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    }
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    initialize();
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    static XMLCh outBuff[128];
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    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast)
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    const XMLByte* xmlBytes = reinterpret_cast<const XMLByte*>(fromTranscode);
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    XMLSize_t outputLength = 0;
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    XMLSize_t eaten = 0;
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    XMLSize_t offset = 0;
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    XMLSize_t inputLength = std::string(fromTranscode).size();
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    unsigned char* charSizes = new unsigned char[inputLength];
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    while (inputLength) {
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        outputLength = transcoder->transcodeFrom(xmlBytes + offset,
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                                                 inputLength,
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                                                 outBuff,
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                                                 128,
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                                                 eaten,
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                                                 charSizes);
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        str.append(outBuff, outputLength);
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        offset += eaten;
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        inputLength -= eaten;
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        //  Bail out if nothing more was produced
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        if (outputLength == 0) {
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            break;
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        }
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    }
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    delete[] charSizes;
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    return str;
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}
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void XMLTools::terminate()
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{
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    transcoder.reset();
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}
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