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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <tools/stream.hxx>
#include <tools/XmlWalker.hxx>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xmlstring.h>
#include <vector>
namespace tools
{
struct XmlWalkerImpl
{
XmlWalkerImpl()
: mpDocPtr(nullptr)
, mpRoot(nullptr)
, mpCurrent(nullptr)
{
}
xmlDocPtr mpDocPtr;
xmlNodePtr mpRoot;
xmlNodePtr mpCurrent;
std::vector<xmlNodePtr> mpStack;
};
XmlWalker::XmlWalker()
: mpImpl(std::make_unique<XmlWalkerImpl>())
{
}
XmlWalker::~XmlWalker()
{
if (mpImpl)
xmlFreeDoc(mpImpl->mpDocPtr);
}
bool XmlWalker::open(SvStream* pStream)
{
std::size_t nSize = pStream->remainingSize();
std::vector<sal_uInt8> aBuffer(nSize + 1);
pStream->ReadBytes(aBuffer.data(), nSize);
aBuffer[nSize] = 0;
mpImpl->mpDocPtr = xmlParseDoc(reinterpret_cast<xmlChar*>(aBuffer.data()));
if (mpImpl->mpDocPtr == nullptr)
return false;
mpImpl->mpRoot = xmlDocGetRootElement(mpImpl->mpDocPtr);
mpImpl->mpCurrent = mpImpl->mpRoot;
mpImpl->mpStack.push_back(mpImpl->mpCurrent);
return true;
}
OString XmlWalker::name() { return reinterpret_cast<const char*>(mpImpl->mpCurrent->name); }
OString XmlWalker::content()
{
OString aContent;
if (mpImpl->mpCurrent->xmlChildrenNode != nullptr)
{
xmlChar* pContent
= xmlNodeListGetString(mpImpl->mpDocPtr, mpImpl->mpCurrent->xmlChildrenNode, 1);
aContent = OString(reinterpret_cast<const char*>(pContent));
xmlFree(pContent);
}
return aContent;
}
void XmlWalker::children()
{
mpImpl->mpStack.push_back(mpImpl->mpCurrent);
mpImpl->mpCurrent = mpImpl->mpCurrent->xmlChildrenNode;
}
void XmlWalker::parent()
{
mpImpl->mpCurrent = mpImpl->mpStack.back();
mpImpl->mpStack.pop_back();
}
OString XmlWalker::attribute(const OString& sName)
{
xmlChar* xmlName = xmlCharStrdup(sName.getStr());
xmlChar* xmlAttribute = xmlGetProp(mpImpl->mpCurrent, xmlName);
OString aAttributeContent(reinterpret_cast<const char*>(xmlAttribute));
xmlFree(xmlAttribute);
xmlFree(xmlName);
return aAttributeContent;
}
void XmlWalker::next() { mpImpl->mpCurrent = mpImpl->mpCurrent->next; }
bool XmlWalker::isValid() const { return mpImpl->mpCurrent != nullptr; }
} // end tools namespace
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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