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xmlfunctions.cpp

/***************************************************************************
                          xmlfunctions.cpp -  description
                             -------------------
    begin                : Sun Jul 24 2005
    copyright            : (C) 2005 by Diederik van der Boor
    email                : vdboor --at-- codingdomain.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include "xmlfunctions.h"

#include <qstringlist.h>


// Helper function, get a specific node
QDomNode XmlFunctions::getNode(const QDomNode &rootNode, const QString &path)
{
#ifdef KMESSTEST
  ASSERT( ! rootNode.isNull() );
  ASSERT( ! path.isEmpty()    );
#endif

  QStringList pathItems = QStringList::split("/", path, false);
  QDomNode    childNode = rootNode.namedItem(pathItems[0]);  // can be a null node

  for(uint i = 1; i < pathItems.count(); i++)
  {
    if(childNode.isNull()) break;
    childNode = childNode.namedItem(pathItems[i]);
  }

  return childNode;
}



// Helper function, get the attribute text of a node
QString XmlFunctions::getNodeAttribute(const QDomNode &node, const QString &attribute)
{
#ifdef KMESSTEST
  ASSERT( ! node.isNull()       );
  ASSERT( ! attribute.isEmpty() );
#endif

  // Writing this is not funny
  return node.attributes().namedItem(attribute).toAttr().value();
//  return node.toElement().attribute(attribute);  does not work for const nodes.
}



// Helper function, get a specific child node
QDomNode XmlFunctions::getNodeChildByKey(const QDomNodeList &childNodes, const QString &keyTagName, const QString &keyValue)
{
#ifdef KMESSTEST
  ASSERT( ! keyTagName .isEmpty() );
  ASSERT( ! keyValue   .isEmpty() );
#endif

  for(uint i = 0; i < childNodes.count(); i++)
{
//    kdDebug() << "node " << childNodes.item(i).nodeName() << "/" << keyTagName
//              << "="     << childNodes.item(i).namedItem(keyTagName).toElement().text() << " == " << keyValue << "?" << endl;

    // If the node has an childname with a certain value... e.g. <childNodes> <item><name>value</name></item> .. </childNodes>
  if(childNodes.item(i).namedItem(keyTagName).toElement().text() == keyValue)
  {
      // Return the node
    return childNodes.item(i);
  }
}

  // Return a null node (is there a better way?)
  return childNodes.item(childNodes.count());
}



// Helper function, get the text value of a node
QString XmlFunctions::getNodeValue(const QDomNode &rootNode, const QString &path)
{
#ifdef KMESSTEST
  ASSERT( ! rootNode.isNull() );
  ASSERT( ! path.isEmpty()    );

  // Added code to avoid more assertion errors, and trace the cause.
  if(rootNode.isNull())
  {
    kdWarning() << "XmlFunctions::getNodeValue: Attempted to request '" << path << "' on null root node." << endl;
    return QString::null;
  }
#endif

  // Because writing node.namedItem("childItem").namedItem("child2").toElement().text() is not funny.
  return getNode(rootNode, path).toElement().text();
}

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