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/*
* Oreka -- A media capture and retrieval platform
*
* Copyright (C) 2005, orecx LLC
*
* http://www.orecx.com
*
* This program is free software, distributed under the terms of
* the GNU General Public License.
* Please refer to http://www.gnu.org/copyleft/gpl.html
*
*/
#include "xercesc/util/XMLString.hpp"
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/dom/DOMElement.hpp>
#include <xercesc/dom/DOMImplementation.hpp>
#include <xercesc/dom/DOMImplementationLS.hpp>
#include <xercesc/dom/DOMWriter.hpp>
#include <xercesc/framework/MemBufFormatTarget.hpp>
#include "DomSerializer.h"
void DomSerializer::ObjectValue(const char* key, Object& value, bool required)
{
if (m_deSerialize == true)
{
GetObject(key, value, required);
}
else
{
AddObject(key, value);
}
}
void DomSerializer::ListValue(const char* key, std::list<ObjectRef>& value, Object& model, bool required)
{
if (m_deSerialize == true)
{
GetList(key, value, model, required);
}
else
{
AddList(key, value);
}
}
void DomSerializer::GetString(const char* key, CStdString& value, bool required)
{
// Find the right node
DOMNode* stringNode = FindElementByName(m_node, CStdString(key));
if(stringNode)
{
// Now, the string associated to element should be the first child (text element)
DOMNode* textNode = stringNode->getFirstChild();
if (textNode && textNode->getNodeType() == DOMNode::TEXT_NODE)
{
value = XMLStringToLocal(textNode->getNodeValue());
}
}
else if (required)
{
throw(CStdString("DomSerializer::GetString: required parameter missing:") + key);
}
}
void DomSerializer::GetObject(const char* key, Object& value, bool required)
{
// Find the node corresponding to the object wanting to be populated
DOMNode* objectNode = FindElementByName(m_node, CStdString(key));
// Create a new serializer and affect it to this object
if (objectNode)
{
DomSerializer serializer(&value);
serializer.DeSerialize(objectNode);
}
else if (required)
{
throw(CStdString("DomSerializer::GetObject: required node missing:") + key);
}
}
void DomSerializer::GetList(const char* key, std::list<ObjectRef>& value, Object& model, bool required)
{
// Find the node corresponding to the object list wanting to be populated
DOMNode* listNode = FindElementByName(m_node, CStdString(key));
// Create a new serializer and affect it to this object
if (listNode)
{
// Iterate over the nodes #####
DOMNode* node = listNode->getFirstChild();
while(node)
{
// Create a new object instance
ObjectRef newObject = model.NewInstance();
try
{
DomSerializer serializer(newObject.get());
serializer.DeSerialize(node);
value.push_back(newObject);
}
catch (CStdString& e)
{
// For now, do not interrupt the deserialization process.
// in the future, we might let this exception go through if the node has been
// recognized to bear the proper tag name
;
}
node = node->getNextSibling();
}
}
else if (required)
{
throw(CStdString("DomSerializer::GetList: required node missing:") + key);
}
}
void DomSerializer::AddObject(const char* key, Object& value)
{
// Not yet implemented ####
;
}
void DomSerializer::AddList(const char* key, std::list<ObjectRef>& value)
{
// Not yet implemented ####
;
}
void DomSerializer::AddString(const char* key, CStdString& value)
{
DOMElement* newElem = m_document->createElement(XStr(key).unicodeForm());
m_node->appendChild(newElem);
DOMText* newText = m_document->createTextNode(XStr((PCSTR)value).unicodeForm());
newElem->appendChild(newText);
}
void DomSerializer::Serialize(XERCES_CPP_NAMESPACE::DOMDocument* doc)
{
if(doc)
{
m_document = doc;
m_node = m_document->getDocumentElement();
m_deSerialize = false; // Set Serialize mode
m_object->Define(this);
}
else
{
throw(CStdString("DomSerializer::Serialize: input DOM document is NULL"));
}
}
void DomSerializer::DeSerialize(DOMNode* node)
{
m_node = node;
Serializer::DeSerialize();
}
CStdString DomSerializer::XMLStringToLocal(const XMLCh* const toTranscode)
{
char* szResult = XMLString::transcode(toTranscode);
CStdString result = szResult;
XMLString::release(&szResult);
return result;
}
DOMNode* DomSerializer::FindElementByName(DOMNode *node, CStdString name)
{
DOMNode *child = node->getFirstChild();
while(child)
{
if (XMLStringToLocal(child->getNodeName()) == name && child->getNodeType() == DOMNode::ELEMENT_NODE)
{
return child;
}
child = child->getNextSibling();
}
return NULL;
}
CStdString DomSerializer::DomNodeToString(DOMNode* node)
{
CStdString output;
DOMImplementation *impl = DOMImplementationRegistry::getDOMImplementation(XStr("LS").unicodeForm());
DOMWriter *theSerializer = ((DOMImplementationLS*)impl)->createDOMWriter();
// set user specified output encoding
//theSerializer->setEncoding(gOutputEncoding);
theSerializer->setFeature(XStr("format-pretty-print").unicodeForm(), true);
XMLFormatTarget *myFormTarget;
myFormTarget = new MemBufFormatTarget ();
theSerializer->writeNode(myFormTarget, *node);
output = (char *)((MemBufFormatTarget*)myFormTarget)->getRawBuffer();
// Clean up
delete theSerializer;
//
// Filter, formatTarget and error handler
// are NOT owned by the serializer.
delete myFormTarget;
return output;
}
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