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A STL based XML Config Tool

, 19 Jun 2005
Writing multiple enumerated configuration entries.
xmlconfig.zip
Source
Tool Classes
ParamIO
XmlConfig
XmlReadWrite
XmlReadWrite.cpp_
XmlReadWrite.dsp
XmlReadWrite.dsw
Makefile.win
StdAfx.o
XmlReadWrite.dev
#include "XmlConfig.h"
#include <stdarg.h>

using namespace std;

TypeDefine XmlConfig::m_TypeDefinition;
XmlConfig::XmlConfig( const char* filename )
{
	DefaultInit();
	assert(filename);
	if(filename)
		readFile( filename );	
}

XmlConfig::XmlConfig()
{
	DefaultInit();
}

string XmlConfig::CheckStringForLineBreaks( const char* pstrInput )
{
	string strInput(pstrInput);
	size_t foundClosing = -1;
	do
	{
		foundClosing = strInput.find( "<", foundClosing+1 );
		if( foundClosing != string::npos )
		{
			size_t TagEnd = strInput.find( ">", foundClosing + 2 );
			if( (TagEnd != string::npos) && (strInput[TagEnd+1] == '<' )  )
			{
				strInput.insert( TagEnd + 1, "\r\n" );
			}
		}
	}
	while( foundClosing != string::npos );
	return strInput;
}

void XmlConfig::RemoveString( string& strInput, string& strSignToRemove )
{
	size_t foundLineBreak = -1;
	do
	{
		foundLineBreak = strInput.find( strSignToRemove, 0 );
		if( foundLineBreak != string::npos )
		{
			strInput.erase( foundLineBreak, 1 );
		}
	}
	while( foundLineBreak != string::npos );	
}

void XmlConfig::SetHeader( char* pstrXmlVersion, char* pstrEncoding )
{
	m_strXmlVersion = pstrXmlVersion;
	m_strEncoding = pstrEncoding;
}

void XmlConfig::writeCompleteStream( std::ostream &os ) const
{
	WriteHeader( os );
	m_ParamIO.writeStream( os );
}

void XmlConfig::DefaultInit(void)
{
	m_strXmlVersion = "1.0";
	m_strEncoding = "ISO-8859-1";
}

XmlConfig::~XmlConfig()
{

}

void XmlConfig::readFile(const char *filename)
{
	if(strlen(filename))
		m_ParamIO.readFile( filename );
}

void XmlConfig::writeFile(const char *filename) const
{
	std::ofstream os(filename);
	writeCompleteStream( os );
}

void XmlConfig::WriteHeader( std::ostream &os ) const
{
	//<?xml version="1.0" encoding="ISO-8859-1"?>
	os << "<?xml version=\"" << m_strXmlVersion << "\" encoding=\"" << m_strEncoding << "\"?>" << '\n';
}

void XmlConfig::readStream(std::istream &is)
{
	m_ParamIO.readStream( is );
}

void XmlConfig::writeStream(std::ostream &os) const
{
	m_ParamIO.writeStream( os );
}

bool XmlConfig::ReadSubtree( const char* strSubTree )
{
	m_ActiveTree.clear();
	m_RedCnfgValues.clear();
	bool bSuccessExtract = m_ParamIO.extract( strSubTree, m_ActiveTree );
	XML_Param_Notify theTree = m_ActiveTree.getTree();
	XML_Node::nodes_iterator NodesIter = theTree.top();
	ExtractElements( *NodesIter );
	return bSuccessExtract;
}

size_t XmlConfig::ReadCurrentTree( void )
{
	m_RedCnfgValues.clear();
	XML_Param_Notify theTree = m_ActiveTree.getTree();
	XML_Node::nodes_iterator NodesIter = theTree.top();
	return ExtractElements( *NodesIter );
}

bool XmlConfig::enterSubTree( std::string& strSubTree )//enters the Subtree named in strSubTree, acoording to current Position
{
	XML_Param_Notify theTree = m_ActiveTree.getTree();
	XML_Node::nodes_iterator NodesIter = theTree.top();
	XML_Node node = *NodesIter;
	string strCurrentNode = node.getName();	
	strCurrentNode += ":" + strSubTree;
	XML_Node* pParent = node.getParent();
	while( pParent )
	{
		string strInsertString = pParent->getName() + ':';
		strCurrentNode.insert( 0, strInsertString );
		pParent = pParent->getParent();
	}
	return m_ParamIO.extract( strCurrentNode.c_str(), m_ActiveTree );
}

bool XmlConfig::leaveSubTree(void)//leaves the current Subtree	
{
	XML_Param_Notify theTree = m_ActiveTree.getTree();
	XML_Node::nodes_iterator NodesIter = theTree.top();
	XML_Node node = *NodesIter;
	string strCurrentNode = node.getName();
	size_t iFoundPos = strCurrentNode.rfind( ":" );
	strCurrentNode = strCurrentNode.substr( iFoundPos, strCurrentNode.size() - iFoundPos );
	return m_ParamIO.extract( strCurrentNode.c_str(), m_ActiveTree );
}

size_t XmlConfig::ExtractElements( XML_Node& theNode )
{
	#ifdef _DEBUG
		size_t iNumElements = theNode.getElementCount();
	#endif
	XML_Node::elements_const_iterator iterBegin = theNode.beginElements();
	XML_Node::elements_const_iterator iterEnd = theNode.endElements();	
	for(XML_Node::elements_const_iterator iter = iterBegin; iter != iterEnd; iter++ )
	{
		std::pair<std::string, Element > aPair = *iter;
		std::string strName = aPair.first;
		//cout << "Element Name : "<< strName << '\n';//TBW :maybe usefull for Debug
		Element aEl = aPair.second;
		//cout << "Element Attributes : "<< aEl.attributes << '\n';//TBW :maybe usefull for Debug
		m_RedCnfgValues.AddValue( strName, aEl );
	}
	return m_RedCnfgValues.size();
}

size_t XmlConfig::ExtractNode( XML_Node& theNode )
{
	XML_Node::nodes_const_iterator iterBegin = theNode.beginNodes();
	XML_Node::nodes_const_iterator iterEnd = theNode.endNodes();
	for( XML_Node::nodes_const_iterator iter = iterBegin;iter != iterEnd; iter++ )
	{
		XML_Node node = (*iter);
		string strNodeName = node.getName();
		//cout << "Found a Node : "<< strNodeName << '\n';
		ExtractElements( node );
		ExtractNode( node );
		//cout << '\n';
	}
	return theNode.getElementCount();
}

bool XmlConfig::erase( char* pstrSubKey )
{
	std::vector<std::string> strs;
	ParamIO::parseAccess( pstrSubKey, strs);
	if(strs.size() == 0)
	{
		return false;
	}
	return m_ParamIO.erase( pstrSubKey );
}

int XmlConfig::erase( char* pstrSubKey, char* pstrAttributeMatchKey, ... )
{
	va_list marker;
	va_start( marker, pstrAttributeMatchKey );
	std::vector<string> vKeyString;
	while( pstrAttributeMatchKey != 0 )
	{
		vKeyString.push_back( std::string( pstrAttributeMatchKey ) );
		pstrAttributeMatchKey = va_arg( marker, char* );  
	}
	va_end( marker );
	return m_ParamIO.erase( pstrSubKey, vKeyString );
}

int XmlConfig::RemoveAttributes( char* pstrKey, char* strAttributeName, char* pstrAttributeMatchKey, ...  )
{
	va_list marker;
	va_start( marker, pstrAttributeMatchKey );
	std::vector<string> vKeyString;
	while( pstrAttributeMatchKey != 0 )
	{
		vKeyString.push_back( std::string( pstrAttributeMatchKey ) );
		pstrAttributeMatchKey = va_arg( marker, char* );  
	}
	va_end( marker );
	return m_ParamIO.removeAttributes( pstrKey, vKeyString, strAttributeName );
}

int XmlConfig::AddAttributeString( char* pstrKey, char* pstrAttributeString, char* pstrAttributeMatchKey, ... )
{
	va_list marker;
	va_start( marker, pstrAttributeMatchKey );
	std::vector<string> vKeyString;
	while( pstrAttributeMatchKey != 0 )
	{
		vKeyString.push_back( std::string( pstrAttributeMatchKey ) );
		pstrAttributeMatchKey = va_arg( marker, char* );  
	}
	va_end( marker );
	return m_ParamIO.addAttributeString( pstrKey, vKeyString, pstrAttributeString );		
}

size_t XmlConfig::hasSubNodes( char* pstrSubKey, string& strFirstNodeName )
{
	m_ActiveTree.clear();
	bool bSuccessExtract = m_ParamIO.extract( pstrSubKey, m_ActiveTree );
	XML_Param_Notify theTree = m_ActiveTree.getTree();
	XML_Node::nodes_iterator NodesIter = theTree.top();
	XML_Node node = *NodesIter;
	size_t iNumSubNodes = node.getNodeCount();
	if(iNumSubNodes)
	{
		node = *node.beginNodes();
		strFirstNodeName = node.getName();
	}
	return iNumSubNodes;
}

void XmlConfig::readBuffer( char* pstrBuffer )
{
	stringstream theStream(pstrBuffer);
	m_ParamIO.readStream( theStream );
}

///////////////////////////////////////////////////////////////////////////////////////////
//CfgValueCont
///////////////////////////////////////////////////////////////////////////////////////////
CfgValueCont::CfgValueCont()
{

}

void CfgValueCont::AddValue( string strKeyName, Element& aEl )
{
	ConfigValue aVal( strKeyName, aEl.value.c_str() );
	m_vReadCnfgValue.push_back(aVal);
}

///////////////////////////////////////////////////////////////////////////////////////////
//ConfigValue
///////////////////////////////////////////////////////////////////////////////////////////
ConfigValue::ConfigValue( string strKeyName, Element& aEl )
{
	strKeyName = strKeyName;
	ParesAttributeString( aEl.attributes );
}

ConfigValue::ConfigValue( string strKeyName, const char* pstrAtribute )
{
	strKeyName = strKeyName;
	ParesAttributeString( string( pstrAtribute ) );
}

void ConfigValue::ParesAttributeString( string& strAttrib )
{
	std::vector<string> vTokens;
	string::size_type TokenBeginPos = 0;
	while( TokenBeginPos != string::npos )
	{
		string::size_type AtribbBeginPos = strAttrib.find( '"', TokenBeginPos );
		string::size_type TokenEndPosPos = strAttrib.find( '"', AtribbBeginPos+1 );
		string strToke = strAttrib.substr( TokenBeginPos, (TokenEndPosPos - TokenBeginPos) );
		if(TokenEndPosPos != string::npos && AtribbBeginPos != string::npos )
		{	
			if( strToke[0] == ' ' )strToke.erase( 0, 1 );// remove preceding Space
			m_vFoundValues.push_back( Attribute(strToke) );
			TokenBeginPos = TokenEndPosPos+1;
		}
		else
			TokenBeginPos = string::npos;
	}
}

///////////////////////////////////////////////////////////////////////////////////////////
//Attribute
///////////////////////////////////////////////////////////////////////////////////////////
Attribute::Attribute( string& strToken )
{
	m_ValType = XmlConfig::m_TypeDefinition.GetType( strToken, m_strAttributeName );
	string::size_type ValueBegin = strToken.find( '"' );
	string::size_type ValueEnd = strToken.find( '"', ValueBegin+1 );
	m_strAttributeValue = strToken.substr( ValueBegin+1, ValueEnd-1 );
}

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About the Author

Tobias Wenig
Software Developer
Germany Germany
Studying and having a degree of medical engineering, but decided to work as a software developer writing medical applications for image processing.

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Web01 | 2.8.141216.1 | Last Updated 20 Jun 2005
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