vc文件读写，用fstream和CStdioFile

#include <afx.h>
#include <iostream>
#include <fstream>

using namespace std;

// 如srcFile=D:\1.sql，则得到的destFile=D:\1_Result.sql
void GetResultFileName(char * destFile, char * srcFile)
{
char *p;
p = strrchr(srcFile, '\\');
if(p)
{
memcpy(destFile, srcFile, p - srcFile + 1);
srcFile = p + 1;
}
p = strrchr(srcFile, '.');
if(p)
{
strncat(destFile, srcFile, p-srcFile);
strcat(destFile, "_Result");
strcat(destFile, p);
}
else
{
strcat(destFile, srcFile);
strcat(destFile, "_Result");
}
}

// 将srcString中的字符串替换后，写入outFile指向的文件中
void Replace(ofstream & outFile, char *srcString)
{
char destString[1024] = {0};
char *p, *pend, *q, *start;
p = pend = q = start = NULL;
int index = -1;
while(srcString)
{
if(p = strstr(srcString, "to_date('"))
{
strncat(destString, srcString, p-srcString);		// 拷贝to_date前面的字符串
p += 8;
q = strstr(p, "'),");			// 搜索子字符串
pend = strchr(p+1, '\'');		// 搜索特定字符
strncat(destString, p, pend-p+2);
srcString = q + 3;
}
else
{
strcat(destString, srcString);
break;
}
}
outFile<<destString<<endl;
}

void Transform(char *destFile, char * srcFile)
{
ifstream inFile(srcFile);
ofstream outFile(destFile);
if(!inFile && !outFile)
{
cout<<"Open File["<<srcFile<<"] Failed."<<endl;
return;
}
char line[1024];
while(inFile.getline(line, 1024))
{
//		cout<<"#"<<line<<"#"<<strlen(line)<<endl;
Replace(outFile, line);
}
inFile.close();
outFile.close();
}

void main()
{
char srcFile[] = "D:\\11.sql";
char destFile[100] = {0};
GetResultFileName(destFile, srcFile);
Transform(destFile, srcFile);
}

/*
功能：将srcFile中所有的to_date('x', 'y')转换为'x', 并将时间改为格式：年-月-日 hh24:mi:ss
@destFile:	输出文件全路径
@srcFile:	输入文件全路径
*/
void CFileReplaceDlg::Transform(CString destFile, CString srcFile)
{
CStdioFile inFile(srcFile, CStdioFile::modeRead);
CStdioFile outFile(destFile, CStdioFile::modeCreate | CStdioFile::modeWrite);
CString line;
while(inFile.ReadString(line) != NULL)
{
Replace(outFile, line);
}
inFile.Close();
outFile.Close();
}