#ifndef COMMON_INCLUDE_H
#define COMMON_INCLUDE_H
#include <iostream>
#include <vector>
#include <string>
#include <fstream>
//#include <sstream>
#include <boost/regex.hpp>
using namespace std;
#endif
#ifndef FIND_FILE_NAME_ACCORD_EXPR_H
#define FIND_FILE_NAME_ACCORD_EXPR_H
#include <windows.h>
#include "CommonInclude.h"
class FindFileNameAccordExpr
{
private:
//bool _isFullPath;
string _dir;
string _searchString;
int _count;
vector<string> _vecfindStrs;
public:
FindFileNameAccordExpr(string dir,string expr);
bool find();
int getCount();
vector<string>::const_iterator getFirstIter();
vector<string>::const_iterator getLastIter();
};
#endif
#include "FindFileNameAccordExpr.h"
FindFileNameAccordExpr::FindFileNameAccordExpr(string dir,string exprStr)
{
_dir = dir;
_searchString = exprStr;
_count = 0;
}
bool FindFileNameAccordExpr::find()
{
if ( _dir == "" || _searchString == "")
{
cout<< "input parameter is null!" << endl;
return false;
}
boost::regex expression(_searchString);
boost::smatch what;
WIN32_FIND_DATA FindFileData;
HANDLE hFind;
int find = 1;
string filePath = _dir + "/" + "*.*";
//find all files in current dir,and save in the vector fileNames.
hFind = FindFirstFile(filePath.c_str(),&FindFileData);
string curFileName;
vector<string> fileNames;
if (hFind == INVALID_HANDLE_VALUE)
{
cout<< "Invalid File Handle. GetLastError reports:"<<GetLastError()<<endl;
return false;
}
else
{
fileNames.push_back(FindFileData.cFileName);
while(FindNextFile(hFind,&FindFileData)!=0)
{
if((FindFileData.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)==0)
{
cout<<"File Name is: "<<FindFileData.cFileName<<endl;
curFileName = FindFileData.cFileName;
fileNames.push_back(curFileName);
}
}
FindClose(hFind);
}
if(fileNames.empty())
{
cout<<"Warning>>> The Dir is empty."<<endl;
return false;
}
else
{
vector<string>::const_iterator pos;
for(pos=fileNames.begin(); pos<fileNames.end(); ++pos)
{
if (boost::regex_search(*pos,what,expression))
{
cout <<"Current file name is match the expression,file name is: "<< what[0] <<endl;
_vecfindStrs.push_back(what[0]);
}
}
if(_vecfindStrs.empty())
{
return false;
}
else
{
return true;
}
}
return true;
}
int FindFileNameAccordExpr::getCount()
{
return _count;
}
vector<string>::const_iterator FindFileNameAccordExpr::getFirstIter()
{
return _vecfindStrs.begin();
}
vector<string>::const_iterator FindFileNameAccordExpr::getLastIter()
{
return _vecfindStrs.end();
}
定义main函数验证该类的实现是否正确。
#include "FindFileNameAccordExpr.h"
int main()
{
//FindFileNameAccordExpr fileExpr("D:","*.txt");
FindFileNameAccordExpr fileExpr("D:",".*\\.txt");
if(fileExpr.find())
{
cout<<"find the files"<<endl;
}
getchar();
}
注释：
我使用的是VS2008 实现的，默认建立的空工程是支持Unicode的，因此第一次编译不会通过。
错误原因：WinBase.h中定义如下，
#ifdef UNICODE
#define FindFirstFile FindFirstFileW
#else
#define FindFirstFile FindFirstFileA
#endif // !UNICODE
我们这里使用的都是ASCII，因此使用的FindFirstFileA函数。
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copies of the Software,and to permit persons to whom the Software is furnished to do so,subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
Permission is hereby granted,freeof charge,to any person obtaining a copy of this software and associated documentation files (the "Software"),to deal in the Software without restriction,including without limitation the rights to use,copy,modify,merge,publish,distribute,sublicense,and/or sell
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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