GXmlPI.cpp
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/***************************************************************************
* GXmlPI.cpp - XML PI node class implementation *
* ----------------------------------------------------------------------- *
* copyright (C) 2010-2011 by Jurgen Knodlseder *
* ----------------------------------------------------------------------- *
* *
* 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. *
* *
***************************************************************************/
/**
* @file GXmlPI.cpp
* @brief XML PI node class implementation
* @author J. Knodlseder
*/
/* __ Includes ___________________________________________________________ */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
//#include <stdio.h> // fprintf, etc...
#include <iostream>
#include <cstdio> // fprintf, etc...
#include "GException.hpp"
#include "GXmlPI.hpp"
/* __ Method name definitions ____________________________________________ */
#define G_PARSE "GXmlPI::parse(std::string&)"
/* __ Macros _____________________________________________________________ */
/* __ Coding definitions _________________________________________________ */
/* __ Debug definitions __________________________________________________ */
/*==========================================================================
= =
= Constructors/destructors =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Void constructor
***************************************************************************/
GXmlPI::GXmlPI(void) : GXmlNode()
{
// Initialise private members for clean destruction
init_members();
// Return
return;
}
/***********************************************************************//**
* @brief Copy constructor
*
* @param[in] node Object from which the instance should be built.
***************************************************************************/
GXmlPI::GXmlPI(const GXmlPI& node) : GXmlNode(node)
{
// Initialise private members for clean destruction
init_members();
// Copy members
copy_members(node);
// Return
return;
}
/***********************************************************************//**
* @brief Segment constructor
*
* @param[in] text Text for instance building.
***************************************************************************/
GXmlPI::GXmlPI(const std::string& segment) : GXmlNode()
{
// Initialise private members for clean destruction
init_members();
// Parse segment
parse(segment);
// Return
return;
}
/***********************************************************************//**
* @brief Destructor
***************************************************************************/
GXmlPI::~GXmlPI(void)
{
// Free members
free_members();
// Return
return;
}
/*==========================================================================
= =
= Operators =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Assignment operator
*
* @param[in] node Object which should be assigned.
***************************************************************************/
GXmlPI& GXmlPI::operator= (const GXmlPI& node)
{
// Execute only if object is not identical
if (this != &node) {
// Copy base class members
this->GXmlNode::operator=(node);
// Free members
free_members();
// Initialise private members for clean destruction
init_members();
// Copy members
copy_members(node);
} // endif: object was not identical
// Return
return *this;
}
/*==========================================================================
= =
= Public methods =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Clear object.
*
* This method properly resets the object to an initial state.
***************************************************************************/
void GXmlPI::clear(void)
{
// Free class members (base and derived classes, derived class first)
free_members();
this->GXmlNode::free_members();
// Initialise members
this->GXmlNode::init_members();
init_members();
// Return
return;
}
/***********************************************************************//**
* @brief Write Processing Instruction into file
*
* @param[in] fptr File pointer.
***************************************************************************/
void GXmlPI::write(FILE* fptr, int indent) const
{
// Write Processing Instruction into file
for (int k = 0; k < indent; ++k)
fprintf(fptr, " ");
fprintf(fptr, "<?%s?>\n", m_pi.c_str());
// Return
return;
}
/***********************************************************************//**
* @brief Print Processing Instruction in output stream
*
* @param[in] os Output stream into which the node will be printed.
***************************************************************************/
void GXmlPI::print(std::ostream& os, int indent) const
{
// Put Processing Instruction in output stream
for (int k = 0; k < indent; ++k)
os << " ";
os << "GXmlPI::" << m_pi;
// Return
return;
}
/*==========================================================================
= =
= Private methods =
= =
==========================================================================*/
/***********************************************************************//**
* @brief Initialise class members
***************************************************************************/
void GXmlPI::init_members(void)
{
// Initialise members
m_pi.clear();
// Return
return;
}
/***********************************************************************//**
* @brief Copy class members
*
* @param[in] node Object from which members which should be copied.
***************************************************************************/
void GXmlPI::copy_members(const GXmlPI& node)
{
// Copy attributes
m_pi = node.m_pi;
// Return
return;
}
/***********************************************************************//**
* @brief Delete class members
***************************************************************************/
void GXmlPI::free_members(void)
{
// Return
return;
}
/***********************************************************************//**
* @brief Clone class
***************************************************************************/
GXmlPI* GXmlPI::clone(void) const
{
return new GXmlPI(*this);
}
/***********************************************************************//**
* @brief Parse comment segment string
*
* @param[in] segement Segment string.
*
* @exception GException::xml_syntax_error
* XML syntax error.
*
* Parse the segment string.
***************************************************************************/
void GXmlPI::parse(const std::string& segment)
{
// Get length of segment
int n = segment.length();
// Check on existence of brackets
if (n < 4 || (segment.compare(0,2,"<?") != 0) &&
(segment.compare(n-2,2,"?>") != 0))
throw GException::xml_syntax_error(G_PARSE, segment,
"missing or invalid Processing Instruction brackets");
// Set comment
if (n > 4)
m_pi = segment.substr(2, n-4);
else
m_pi.clear();
// Return
return;
}
/*==========================================================================
= =
= Friends =
= =
==========================================================================*/