www.pudn.com > HTMLLog.zip > GenFile.cpp

/************************************************************************************* 
 ************************************************************************************* 
 **																					** 
 ** File name:		GenFile.cpp.													** 
 **																					** 
 ** Description:	Implementation file of class CGenFile.							** 
 **																					** 
 ** Created on:		Nov 2002.													** 
 **																					** 
 ** Author:			Stas Desyatnikov.												** 
 **																					** 
 ** FileX Copyright (C) 2002. All rights reserved.									** 
 **																					** 
 ************************************************************************************* 
 *************************************************************************************/ 
 
#include  
#include "GenFile.h" 
 
CGenFile::CGenFile() 
{ 
	m_fFile = 0; 
} 
 
CGenFile::~CGenFile() 
{ 
	if (m_fFile != 0) 
		Close(); 
} 
 
bool CGenFile::Open(char* szFileName, const char *mode) 
{ 
	// attempt file creation 
	FILE* fFile = fopen(szFileName, mode); 
	m_fFile = fFile; 
 
	return ( m_fFile != NULL); 
} 
 
int CGenFile::Read(void* pBuf, uint* pCount) 
{ 
	return fread( pBuf, sizeof(char), *pCount, m_fFile ); 
} 
 
bool CGenFile::ReadLine(char* szStr, uint* pMaxCount) 
{ 
	return ( NULL != fgets( szStr, *pMaxCount, m_fFile ) ); 
} 
 
int CGenFile::Write(const void* pBuf, uint nCount) 
{ 
	return fwrite( pBuf, sizeof(char), nCount, m_fFile ); 
} 
 
bool CGenFile::WriteLine( const char* szStr, int iSize ) 
{ 
	if ( iSize == -1 ) 
		iSize = strlen( szStr ); 
 
	int iRet = Write( szStr, iSize ); 
	if ( iRet < iSize ) 
		return false; 
 
	iRet = strlen("\n"); 
	return ( iRet == Write( "\n", iRet ) ); 
} 
 
bool CGenFile::Seek( long lOffset ) 
{ 
	int iRet = fseek( m_fFile, lOffset, SEEK_SET ); 
	return ( iRet == 0 ); 
} 
 
uint CGenFile::GetPosition() 
{ 
	return ftell(m_fFile); 
} 
 
void CGenFile::Close() 
{ 
	if ( m_fFile ) 
	{ 
		fclose( m_fFile ); 
		m_fFile = NULL; 
	} 
} 
 
uint CGenFile::GetLength() 
{ 
	int StreamLength; 
	long CurrStreamPosition; 
	 
	//Get current position 
	CurrStreamPosition = ftell(m_fFile); 
	//seek to the end of file 
	fseek(m_fFile, 0, SEEK_END); 
	StreamLength = ftell(m_fFile); 
	//Get back to the stored position 
	fseek(m_fFile, CurrStreamPosition, SEEK_SET); 
 
	return StreamLength; 
} 
 
bool CGenFile::IsFile( char* szFile ) 
{ 
	FILE* fFile = fopen( szFile, "r" ); 
	if ( fFile ) 
	{ 
		fclose( fFile ); 
		return true; 
	} 
	else 
	{ 
		return false; 
	} 
} 
 
CGenFile::operator FILE*() 
{ 
	return m_fFile; 
}