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/*=========================================================================
Program: ParaView
Module: vtkPVXMLParser.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkPVXMLParser.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkPVXMLElement.h"
#include <sstream>
vtkStandardNewMacro(vtkPVXMLParser);
//----------------------------------------------------------------------------
vtkPVXMLParser::vtkPVXMLParser()
{
this->FileName = 0;
this->InputString = 0;
this->NumberOfOpenElements = 0;
this->OpenElementsSize = 10;
this->OpenElements = new vtkPVXMLElement*[this->OpenElementsSize];
this->ElementIdIndex = 0;
this->RootElement = 0;
this->SuppressErrorMessages = 0;
}
//----------------------------------------------------------------------------
vtkPVXMLParser::~vtkPVXMLParser()
{
unsigned int i;
for(i=0;i < this->NumberOfOpenElements;++i)
{
this->OpenElements[i]->Delete();
}
delete [] this->OpenElements;
if(this->RootElement)
{
this->RootElement->Delete();
}
this->SetFileName(0);
}
//----------------------------------------------------------------------------
void vtkPVXMLParser::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "FileName: " << (this->FileName? this->FileName : "(none)")
<< "\n";
os << indent << "SuppressErrorMessages: " << this->SuppressErrorMessages
<< "\n";
}
//----------------------------------------------------------------------------
void vtkPVXMLParser::StartElement(const char* name, const char** atts)
{
vtkPVXMLElement* element = vtkPVXMLElement::New();
element->SetName(name);
element->ReadXMLAttributes(atts);
const char* id = element->GetAttribute("id");
if(id)
{
element->SetId(id);
}
else
{
std::ostringstream idstr;
idstr << this->ElementIdIndex++ << ends;
element->SetId(idstr.str().c_str());
}
this->PushOpenElement(element);
}
//----------------------------------------------------------------------------
void vtkPVXMLParser::EndElement(const char* vtkNotUsed(name))
{
vtkPVXMLElement* finished = this->PopOpenElement();
unsigned int numOpen = this->NumberOfOpenElements;
if(numOpen > 0)
{
this->OpenElements[numOpen-1]->AddNestedElement(finished);
finished->Delete();
}
else
{
this->RootElement = finished;
}
}
//----------------------------------------------------------------------------
void vtkPVXMLParser::CharacterDataHandler(const char* data, int length)
{
unsigned int numOpen = this->NumberOfOpenElements;
if(numOpen > 0)
{
this->OpenElements[numOpen-1]->AddCharacterData(data, length);
}
}
//----------------------------------------------------------------------------
void vtkPVXMLParser::PushOpenElement(vtkPVXMLElement* element)
{
if(this->NumberOfOpenElements == this->OpenElementsSize)
{
unsigned int newSize = this->OpenElementsSize*2;
vtkPVXMLElement** newOpenElements = new vtkPVXMLElement*[newSize];
unsigned int i;
for(i=0; i < this->NumberOfOpenElements;++i)
{
newOpenElements[i] = this->OpenElements[i];
}
delete [] this->OpenElements;
this->OpenElements = newOpenElements;
this->OpenElementsSize = newSize;
}
unsigned int pos = this->NumberOfOpenElements++;
this->OpenElements[pos] = element;
}
//----------------------------------------------------------------------------
vtkPVXMLElement* vtkPVXMLParser::PopOpenElement()
{
if(this->NumberOfOpenElements > 0)
{
--this->NumberOfOpenElements;
return this->OpenElements[this->NumberOfOpenElements];
}
return 0;
}
//----------------------------------------------------------------------------
void vtkPVXMLParser::PrintXML(ostream& os)
{
this->RootElement->PrintXML(os, vtkIndent());
}
//----------------------------------------------------------------------------
int vtkPVXMLParser::ParseXML()
{
if (this->RootElement)
{
this->RootElement->Delete();
this->RootElement = 0;
}
return this->Superclass::ParseXML();
}
//----------------------------------------------------------------------------
vtkPVXMLElement* vtkPVXMLParser::GetRootElement()
{
return this->RootElement;
}
//-----------------------------------------------------------------------------
void vtkPVXMLParser::ReportXmlParseError()
{
if (!this->SuppressErrorMessages)
{
this->Superclass::ReportXmlParseError();
}
}
//-----------------------------------------------------------------------------
vtkSmartPointer<vtkPVXMLElement> vtkPVXMLParser::ParseXML(
const char* xmlcontents, bool suppress_errors)
{
vtkSmartPointer<vtkPVXMLElement> root;
vtkNew<vtkPVXMLParser> parser;
parser->SetSuppressErrorMessages(suppress_errors? 1 : 0);
if (parser->Parse(xmlcontents))
{
root = parser->GetRootElement();
}
return root;
}
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