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? _findfirst ? _findnext ????

?????

? C ??? io.h ??????? _finddata_t ????????????????????????????

struct _finddata_t {
    unsigned attrib;      // ??????
    time_t time_create;   // ??????
    time_t time_access;   // ????????
    time_t time_write;    // ????????
    unsigned long _fsize_t size; // ????
    char name[260];      // ???
};

????

• attrib??????????????????

  • _A_ARCH?????
  • _A_HIDDEN?????
  • _A_NORMAL?????
  • _A_RDONLY?????
  • _A_SUBDIR????
  • _A_SYSTEM?????

• time_create?time_access?time_write?????????????????????????????

• size??????

• name?????????? 260 ????

_findfirst ? _findnext ???

1. _findfirst ??

long _findfirst(const char *filename, struct _finddata_t *pfind);

• ???

  • filename?????????????????? *.* ? *.cpp??
  • pfind????????????????

• ????

  • ?????????
  • ???? -1?

2. _findnext ??

int _findnext(long handle, struct _finddata_t *pfind);

• ???

  • handle??????????????
  • pfind??????????????

• ????

  • ???? 0?
  • ???? -1?

3. _findclose ??

int _findclose(long handle);

• ????????
• ????
  • ???? 0?
  • ???? -1?

??????

????? _findfirst ? _findnext ????????????

#include 
   
    
#include 
    
     
#include 
     
      
using namespace std;
bool transfer(string fileName, int &exeNum) {
    _finddata_t fileInfo;
    long handle = _findfirst(fileName.c_str(), &fileInfo);
    
    if (handle == -1) {
        cerr << "failed to transfer files" << endl;
        return false;
    }
    
    do {
        exeNum++;
        cout << fileInfo.name << endl;
    } while (_findnext(handle, &fileInfo) == 0);
    
    cout << " .exe files' number:  " << exeNum << endl;
    return true;
}
void dfsFolder(string folderPath, ofstream &fout) {
    _finddata_t FileInfo;
    string strfind = folderPath + "\\*";
    long Handle = _findfirst(strfind.c_str(), &FileInfo);
    
    if (Handle == -1) {
        cerr << "can not match the folder path" << endl;
        exit(-1);
    }
    
    do {
        if (FileInfo.attrib & _A_SUBDIR) {
            if ((strcmp(FileInfo.name, ".") != 0) && (strcmp(FileInfo.name, "..") != 0)) {
                string newPath = folderPath + "\\" + FileInfo.name;
                dfsFolder(newPath, fout);
            }
        } else {
            fout << folderPath.c_str() << "\\" << FileInfo.name << " ";
            cout << folderPath.c_str() << "\\" << FileInfo.name << endl;
        }
    } while (_findnext(Handle, &FileInfo) == 0);
    
    _findclose(Handle);
    fout.close();
}
     
    
   

int main() {
    _finddata_t file;
    int k;
    long HANDLE;
    
    k = HANDLE = _findfirst("*.*", &file);
    
    while (k != -1) {
        cout << file.name << endl;
        k = _findnext(HANDLE, &file);
    }
    
    _findclose(HANDLE);
    
    transfer("C:\\Windows\\*.exe", 0);
    
    ofstream o_fstream;
    dfsFolder("E:\\WHU\\Study", o_fstream);
    
    return 0;
}

???????

• ??????????????????? *?*.*?*.exe ???
• ????? (.) ?????? (..) ??????????????????????????

??????????

?? _findfirst ? _findnext ????????????????????

??

?????????????????????????? _findfirst ?????????_findnext ??????????_findclose ?????????