www.pudn.com > mischat.rar > Tokenizer.cpp

/* ========================================================================== 
	Class :			CTokenizer 
 
	Date :			06/18/04 
 
	Purpose :		"CTokenizer" is a very simple class to tokenize a string  
					into a string array.	 
 
	Description :	The string is chopped up and put into an internal  
					"CStringArray". With "GetAt", different types of data can  
					be read from the different elements. 
 
	Usage :			Create an instance of "CTokenizer" on the stack. Set  
					the string to parse in the "ctor", and the delimiter if  
					not a comma. The "ctor" automatically tokenize the input 
					string. 
 
					Call "GetSize" to get the number of  
					tokens, and "GetAt" to get a specific token. 
	 
					You can also reuse the tokenizer by calling "Init". 
   ======================================================================== 
	Changes :		28/8  2004	Changed a char to TCHAR to allow UNICODE  
								building (Enrico Detoma) 
   ========================================================================*/ 
 
#include "stdafx.h" 
#include "Tokenizer.h" 
 
 
//////////////////////////////////////////////////////////////////// 
// Public functions 
// 
CTokenizer::CTokenizer( CString strInput, const CString & strDelimiter ) 
/* ============================================================ 
	Function :		CTokenizer::CTokenizer 
	Description :	Constructor. 
	Access :		Public 
					 
	Return :		void 
	Parameters :	CString strInput				-	String to  
														tokenize 
					const CString & strDelimiter	-	Delimiter,  
														defaults to 
														comma. 
 
	Usage :			Should normally be created on the stack. 
 
   ============================================================*/ 
{ 
 
	Init(strInput, strDelimiter); 
 
} 
 
void CTokenizer::Init( const CString & strInput, const CString & strDelimiter ) 
/* ============================================================ 
	Function :		CTokenizer::Init 
	Description :	Reinitializes and tokenizes the tokenizer  
					with "strInput". "strDelimiter" is the  
					delimiter to use. 
	Access :		Public 
					 
	Return :		void 
	Parameters :	const CString & strInput		-	New string 
					const CString & strDelimiter	-	Delimiter, 
														defaults to  
														comma 
 
	Usage :			Call to reinitialize the tokenizer. 
 
   ============================================================*/ 
{ 
 
	CString copy( strInput ); 
	m_stra.RemoveAll(); 
	int nFound = copy.Find( strDelimiter ); 
 
	while(nFound != -1) 
	{ 
		CString strLeft; 
		strLeft = copy.Left( nFound ); 
		copy = copy.Right( copy.GetLength() - ( nFound + 1 ) ); 
 
		m_stra.Add( strLeft ); 
		nFound = copy.Find( strDelimiter ); 
	} 
 
	m_stra.Add( copy ); 
 
} 
 
int CTokenizer::GetSize(  ) const 
/* ============================================================ 
	Function :		CTokenizer::GetSize 
	Description :	Gets the number of tokens in the tokenizer. 
	Access :		Public 
					 
	Return :		int	-	Number of tokens. 
	Parameters :	none 
 
	Usage :			Call to get the number of tokens in the  
					tokenizer. 
 
   ============================================================*/ 
{ 
 
	return m_stra.GetSize(); 
 
} 
 
void CTokenizer::GetAt( int nIndex, CString & str ) const 
/* ============================================================ 
	Function :		CTokenizer::GetAt 
	Description :	Get the token at "nIndex" and put it in  
					"str". 
	Access :		Public 
					 
	Return :		void 
	Parameters :	int nIndex		- Index to get token from 
					CString & str	- Result 
 
	Usage :			Call to get the value of the token at  
					"index". 
 
   ============================================================*/ 
{ 
 
		if( nIndex < m_stra.GetSize() ) 
			str = m_stra.GetAt( nIndex ); 
		else 
			str = _T( "" ); 
 
} 
 
void CTokenizer::GetAt( int nIndex, int & var ) const 
/* ============================================================ 
	Function :		CTokenizer::GetAt 
	Description :	Get the token at "nIndex" and put it in  
					"var". 
	Access :		Public 
					 
	Return :		void 
	Parameters :	int nIndex	- Index to get token from 
					int & var	- Result 
 
	Usage :			Call to get the value of the token at  
					"index". 
 
   ============================================================*/ 
{ 
 
		if( nIndex < m_stra.GetSize() ) 
			var = _ttoi( m_stra.GetAt( nIndex ) ); 
		else 
			var = 0; 
 
} 
 
void CTokenizer::GetAt( int nIndex, WORD & var ) const 
/* ============================================================ 
	Function :		CTokenizer::GetAt 
	Description :	Get the token at "nIndex" and put it in  
					"var". 
	Access :		Public 
					 
	Return :		void 
	Parameters :	int nIndex	- Index to get token from 
					WORD & var	- Result 
 
	Usage :			Call to get the value of the token at  
					"index". 
 
   ============================================================*/ 
{ 
 
		if( nIndex < m_stra.GetSize() ) 
			var = static_cast< WORD >( _ttoi( m_stra.GetAt( nIndex ) ) ); 
		else 
			var = 0; 
 
} 
 
void CTokenizer::GetAt( int nIndex, double & var ) const 
/* ============================================================ 
	Function :		CTokenizer::GetAt 
	Description :	Get the token at "nIndex" and put it in  
					"var". 
	Access :		Public 
					 
	Return :		void 
	Parameters :	int nIndex		- Index to get token from 
					double & var	- Result 
 
	Usage :			Call to get the value of the token at  
					"index". 
 
   ============================================================*/ 
{ 
 
		TCHAR   *stop; 
		if( nIndex < m_stra.GetSize() ) 
			var = _tcstod( m_stra.GetAt( nIndex ), &stop ); 
		else 
			var = 0.0; 
 
} 
 
void CTokenizer::GetAt( int nIndex, DWORD & var ) const 
/* ============================================================ 
	Function :		CTokenizer::GetAt 
	Description :	Get the token at "nIndex" and put it in  
					"var". 
	Access :		Public 
					 
	Return :		void 
	Parameters :	int nIndex	- Index to get token from 
					DWORD & var	- Result 
 
	Usage :			Call to get the value of the token at  
					"index". 
 
   ============================================================*/ 
{ 
 
		if( nIndex < m_stra.GetSize() ) 
			var = static_cast< DWORD >( _ttoi( m_stra.GetAt( nIndex ) ) ); 
		else 
			var = 0; 
 
}