/usr/include/CLAM/XercesDomDocumentHandler.hxx is in libclam-dev 1.4.0-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
* UNIVERSITAT POMPEU FABRA
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _XercesDomDocumentHandler_hxx_
#define _XercesDomDocumentHandler_hxx_
#include "XercesEncodings.hxx"
#include "XercesDomReadingContext.hxx"
#include "XercesDomWritingContext.hxx"
#include "XercesDomReader.hxx"
#include "XercesDomWriter.hxx"
#include "XercesInitializer.hxx"
#include <xercesc/parsers/XercesDOMParser.hpp>
#include <xercesc/dom/DOMImplementation.hpp>
#include <xercesc/dom/DOMDocument.hpp>
#include <xercesc/dom/DOMElement.hpp>
namespace CLAM
{
class XercesDomReadingContext;
class XercesDomWritingContext;
/**
* XML implementation backend for the Xerces-C library.
* @ingroup XmlBackends_Xerces
*/
class XercesDomDocumentHandler
{
public:
typedef XercesDomWritingContext WritingContext;
typedef XercesDomReadingContext ReadingContext;
ReadingContext * GetReadingContext()
{
return _currentReadContext;
}
void SetReadingContext(ReadingContext * context)
{
_currentReadContext = context;
}
WritingContext * GetWritingContext()
{
return _currentWriteContext;
}
void SetWritingContext(WritingContext * context)
{
_currentWriteContext = context;
}
private:
ReadingContext * _currentReadContext;
WritingContext * _currentWriteContext;
xercesc::DOMDocument * _document;
xercesc::DOMElement * _selection;
xercesc::XercesDOMParser * _parser;
public:
XercesDomDocumentHandler()
{
_document = 0;
_selection = 0;
_parser = 0;
}
~XercesDomDocumentHandler()
{
releaseIfAnyDocument();
}
void setDocument(xercesc::DOMDocument * document)
{
_document = document;
_selection = _document->getDocumentElement();
}
void selectPath(const char * path)
{
if (path[0]!='/')
_selection = recursiveSelection(_selection, path, 0);
else
_selection = absoluteSelection(path);
return;
}
xercesc::DOMElement * getSelection()
{
return _selection;
}
void create(const char * rootName)
{
XercesInitializer::require();
releaseIfAnyDocument();
xercesc::DOMImplementation * imp =
xercesc::DOMImplementation::getImplementation();
xercesc::DOMDocument * domDoc = imp->createDocument(0,U(rootName),0);
setDocument(domDoc);
}
void read(std::istream & stream)
{
XercesDomReader reader;
xercesc::DOMDocument * domDoc;
domDoc = reader.read(stream);
setDocument(domDoc);
_parser = reader.adoptParser();
}
void writeDocument(std::ostream & os, bool useIndentation=false)
{
XercesDomWriter writer;
writer.DoIndentedFormat(useIndentation);
writer.write(os,_document);
}
void writeSelection(std::ostream & os, bool useIndentation=false)
{
XercesDomWriter writer;
writer.DoIndentedFormat(useIndentation);
writer.write(os,_selection);
}
private:
void releaseIfAnyDocument()
{
if (!_document) return;
if (_parser)
delete _parser;
else
_document->release();
_parser=0;
_document=0;
}
xercesc::DOMElement * absoluteSelection(const std::string & path)
{
xercesc::DOMElement * root = (xercesc::DOMElement*) _document->getDocumentElement();
unsigned int nextSlash = std::string(path).find('/',1);
std::string rootStep = std::string(path).substr(1,nextSlash-1);
std::string rootName = L(root->getNodeName());
if (rootStep=="") return root;
if (rootName== rootStep)
return recursiveSelection(root, path, nextSlash+1);
throw XmlStorageErr("Wrong root name, expected '"+rootStep+"' but found '"+rootName+"'");
}
xercesc::DOMElement * recursiveSelection(xercesc::DOMElement * current, const std::string & path, unsigned int pos)
{
if (pos >= path.length()) return current;
unsigned int slashPosition = path.find('/', pos);
unsigned int stepSize =
slashPosition == std::string::npos ?
std::string::npos : slashPosition-pos;
std::string step = path.substr(pos, stepSize);
for (
xercesc::DOMNode * child = current->getFirstChild();
child;
child = child->getNextSibling())
{
if (child->getNodeType() != xercesc::DOMNode::ELEMENT_NODE) continue;
std::string nodeName(L(child->getNodeName()));
if (nodeName != step) continue;
if (slashPosition==std::string::npos) return (xercesc::DOMElement *) child;
return recursiveSelection((xercesc::DOMElement *) child, path, slashPosition+1);
}
std::string msg = "Wrong path step '" + step + "'";
throw XmlStorageErr(msg);
}
};
}
/**
* @defgroup XmlBackends_Xerces XML Backend for Apache's Xerces-C
* @ingroup XmlBackends
*/
#endif//_XercesDomDocumentHandler_hxx_
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