vtkPVXMLParser.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include "qPCL.h"             // needed for export macro
#include "vtkSmartPointer.h"  // needed for vtkSmartPointer.
#include "vtkXMLParser.h"
 
class vtkPVXMLElement;
 
class QPCL_ENGINE_LIB_API vtkPVXMLParser : public vtkXMLParser {
public:
    vtkTypeMacro(vtkPVXMLParser, vtkXMLParser);
    void PrintSelf(ostream& os, vtkIndent indent) override;
    static vtkPVXMLParser* New();
 
    void PrintXML(ostream& os);
 
    vtkPVXMLElement* GetRootElement();
 
 
    vtkGetMacro(SuppressErrorMessages, int);
    vtkSetMacro(SuppressErrorMessages, int);
    vtkBooleanMacro(SuppressErrorMessages, int);
 
    static vtkSmartPointer<vtkPVXMLElement> ParseXML(
            const char* xmlcontents, bool suppress_errors = false);
 
protected:
    vtkPVXMLParser();
    ~vtkPVXMLParser() override;
 
    int SuppressErrorMessages;
 
    void StartElement(const char* name, const char** atts) override;
    void EndElement(const char* name) override;
    void CharacterDataHandler(const char* data, int length) override;
 
    void AddElement(vtkPVXMLElement* element);
    void PushOpenElement(vtkPVXMLElement* element);
    vtkPVXMLElement* PopOpenElement();
 
    // The root XML element.
    vtkPVXMLElement* RootElement;
 
    // The stack of elements currently being parsed.
    vtkPVXMLElement** OpenElements;
    unsigned int NumberOfOpenElements;
    unsigned int OpenElementsSize;
 
    // Counter to assign unique element ids to those that don't have any.
    unsigned int ElementIdIndex;
 
    // Called by Parse() to read the stream and call ParseBuffer.  Can
    // be replaced by subclasses to change how input is read.
    int ParseXML() override;
 
    // Overridden to implement the SuppressErrorMessages feature.
    void ReportXmlParseError() override;
 
private:
    vtkPVXMLParser(const vtkPVXMLParser&) = delete;
    void operator=(const vtkPVXMLParser&) = delete;
};