myfile.cpp

在UBTUNTU下

#include <string.h>
#include "MyFile.h"

CMyFile::CMyFile()
{
	m_hFile=NULL;
}

CMyFile::~CMyFile()
{
	Close();
}

bool CMyFile::Open(const char *pszFileName,
				   const char *pszMode)
{
	Close();
	m_hFile=fopen(pszFileName,pszMode);
	return m_hFile != NULL;
}

//将文件描述符转变成文件指针
bool CMyFile::Open(int fd,const char *pszMode)
{
	Close();
	m_hFile=fdopen(fd,pszMode);
	return m_hFile != NULL;
}

int CMyFile::Read(void *pvData,int iSize)
{
	return fread(pvData,1,iSize,m_hFile);
}

//从文件中读取一行
char *CMyFile::ReadLine(char *pszLine,int iMaxSize)
{
	return fgets(pszLine,iMaxSize,m_hFile);
}

int CMyFile::Write(const void *pvData,int iSize)
{
	return fwrite(pvData,1,iSize,m_hFile);
}

//往文件中写入一个字符串
int CMyFile::Write(const char *pszData)
{
	return fputs(pszData,m_hFile);
}

bool CMyFile::IsEof()
{
	return feof(m_hFile) != 0;
}

bool CMyFile::Seek(int iSize,int iMode)
{
	return fseek(m_hFile,iSize,iMode) == 0;
}

bool CMyFile::IsOpened()
{
	return m_hFile != NULL;
}

void CMyFile::Close()
{
	if(m_hFile != NULL)
	{
		fclose(m_hFile);
		m_hFile=NULL;
	}
}