GXmlNode.hpp
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/***************************************************************************
* GXmlNode.hpp - Abstract XML node base class *
* ----------------------------------------------------------------------- *
* copyright (C) 2010-2015 by Juergen Knoedlseder *
* ----------------------------------------------------------------------- *
* *
* 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 3 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, see <http://www.gnu.org/licenses/>. *
* *
***************************************************************************/
/**
* @file GXmlNode.hpp
* @brief Abstract XML node base class interface definition
* @author Juergen Knoedlseder
*/
#ifndef GXMLNODE_HPP
#define GXMLNODE_HPP
/* __ Includes ___________________________________________________________ */
#include <string>
#include <vector>
#include "GContainer.hpp"
#include "GUrl.hpp"
/* __ Forward declarations _______________________________________________ */
class GXmlElement;
/***********************************************************************//**
* @class GXmlNode
*
* @brief Abstract XML node base class
*
* This class defines the interface for all XML nodes. Each XML node can be
* the container for a number of child nodes. The GXmlNode class is thus
* designed as a container class that holds a list of pointers of type
* GXmlNode. This allows implementing an arbitrary complex tree structure.
*
* The only member of this class is a list of XML node pointers. GXmlNode
* handles the proper allocation and deallocation of the node memory.
*
* Most methods are identical to those of the GXml class. Please refer to
* the documentation of this class for a description of the methods.
***************************************************************************/
class GXmlNode : public GContainer {
public:
// Constructors and destructors
GXmlNode(void);
GXmlNode(const GXmlNode& node);
virtual ~GXmlNode(void);
// Operators
GXmlNode& operator=(const GXmlNode& node);
GXmlNode* operator[](const int& index);
const GXmlNode* operator[](const int& index) const;
// Public enumerators
enum NodeType {
NT_DOCUMENT,
NT_ELEMENT,
NT_COMMENT,
NT_UNKNOWN,
NT_TEXT,
NT_DECLARATION,
NT_PI,
NT_TYPECOUNT
};
// Methods
virtual void clear(void) = 0;
virtual GXmlNode* clone(void) const = 0;
virtual std::string classname(void) const = 0;
virtual int size(void) const;
virtual bool is_empty(void) const;
virtual GXmlNode* set(const int& index, const GXmlNode& node);
virtual GXmlNode* append(const GXmlNode& node);
virtual GXmlElement* append(const std::string& segment);
virtual GXmlNode* insert(const int& index, const GXmlNode& node);
virtual void remove(const int& index);
virtual void reserve(const int& num);
virtual void extend(const GXmlNode& node);
virtual int elements(void) const;
virtual int elements(const std::string& name) const;
virtual GXmlElement* element(const int& index);
virtual const GXmlElement* element(const int& index) const;
virtual GXmlElement* element(const std::string& name);
virtual const GXmlElement* element(const std::string& name) const;
virtual GXmlElement* element(const std::string& name, const int& index);
virtual const GXmlElement* element(const std::string& name, const int& index) const;
virtual void write(GUrl& url, const int& indent) const = 0;
virtual NodeType type(void) const = 0;
virtual std::string print(const GChatter& chatter = NORMAL,
const int& indent = 0) const = 0;
virtual std::string print(const GChatter& chatter = NORMAL) const;
protected:
// Protected methods
void init_members(void);
void copy_members(const GXmlNode& node);
void free_members(void);
int extract_index(std::string& tag) const;
// Protected data members
std::vector<GXmlNode*> m_nodes; //!< Pointer to child nodes
};
/***********************************************************************//**
* @brief Return number of child nodes
*
* @return Number of child nodes in node.
***************************************************************************/
inline
int GXmlNode::size(void) const
{
return (int)m_nodes.size();
}
/***********************************************************************//**
* @brief Signals if node has no child nodes
*
* @return True if node has no child nodes.
***************************************************************************/
inline
bool GXmlNode::is_empty(void) const
{
return m_nodes.empty();
}
/***********************************************************************//**
* @brief Reserve space for child nodes
*
* @param[in] num Number of child nodes for which space should be reserved.
***************************************************************************/
inline
void GXmlNode::reserve(const int& num)
{
m_nodes.reserve(num);
return;
}
#endif /* GXMLNODE_HPP */