VC遍历访问目录下的文件

//查找目录下所有的文件夹
void FindFolder(string dir, vector<string> &folderPath)
{
    CFileFind fileFinder;
    CString filePath = CString(dir.c_str()) + _T("\\*.*");

    BOOL bFinished = fileFinder.FindFile(filePath);
    while (bFinished)  //每次循环对应一个类别目录
    {
        bFinished = fileFinder.FindNextFile();
        if (fileFinder.IsDirectory() && !fileFinder.IsDots())  //fileFinder.IsDots()识别"."文件和".."文件
        {
            CString filePath = fileFinder.GetFilePath();
            folderPath.push_back(filePath.GetBuffer());
            filePath.ReleaseBuffer();
        }
    }

    fileFinder.Close();
}

//查找目录下所有的文件(不遍历目录的目录)  
void FindDirFileNoFormat(string dir, vector<string> &filePath)
{
    CFileFind fileFinder;
    CString path = CString(dir.c_str()) + _T("\\*.*");

    BOOL bFinished = fileFinder.FindFile(path);
    while (bFinished)  //每次循环对应一个类别目录
    {
        bFinished = fileFinder.FindNextFile();
        if (fileFinder.IsDirectory() || fileFinder.IsDots())  //fileFinder.IsDots()识别"."文件和".."文件
        {
            continue;
        }
        else
        {
            CString findPath = fileFinder.GetFilePath();
            filePath.push_back(findPath.GetBuffer());
            findPath.ReleaseBuffer();
        }
    }

    fileFinder.Close();
}

//查找目录下所有的文件(遍历目录的目录)   
void FindAllFileNoFormat(string dir, vector<string> &filePath)
{
    CFileFind fileFinder;
    CString path = CString(dir.c_str()) + _T("\\*.*");

    BOOL bFinished = fileFinder.FindFile(path);
    while (bFinished)  //每次循环对应一个类别目录
    {
        bFinished = fileFinder.FindNextFile();

        // 跳过 . 和 .. ; 否则会陷入无限循环中！！！
        if (fileFinder.IsDots())
        {
            continue;
        }

        //
        if (fileFinder.IsDirectory())
        {
            CString findPath = fileFinder.GetFilePath();
            string subdir = findPath.GetBuffer();
            FindAllFileNoFormat(subdir, filePath);
            findPath.ReleaseBuffer();
        }
        else
        {
            CString findPath = fileFinder.GetFilePath();
            filePath.push_back(findPath.GetBuffer());
            findPath.ReleaseBuffer();
        }
    }

    fileFinder.Close();
}

// 查找目录下某一类型文件 (不遍历目录的目录)
void FindDirFile(string dir, string format, vector<string> &filePath)
{
    CFileFind fileFinder;
    CString path = CString(dir.c_str()) + _T("\\*") + CString(format.c_str());

    BOOL bFinished = fileFinder.FindFile(path);
    while (bFinished)  //每次循环对应一个类别目录
    {
        bFinished = fileFinder.FindNextFile();
        if (fileFinder.IsDirectory() && !fileFinder.IsDots())  //fileFinder.IsDots()识别"."文件和".."文件
        {
            continue;
        }
        else
        {
            CString findPath = fileFinder.GetFilePath();
            filePath.push_back(findPath.GetBuffer());
            findPath.ReleaseBuffer();
        }
    }

    fileFinder.Close();
}

//得到文件路径的格式后缀
string GetPathFormat(string filePath)
{
    string format = filePath;
    size_t p = filePath.find_last_of('.');
    if (p == -1)
    {
        return string();
    }
    format.erase(0, p);
    return format;
}

// 查找目录下某一类型文件 (遍历目录的目录)    
void FindDirAllFileEx(string dir, vector<string> &format, vector<string>& filePath)
{
    CFileFind fileFinder;
    CString path = CString(dir.c_str()) + _T("\\*.*");

    BOOL bFinished = fileFinder.FindFile(path);
    while (bFinished)  //每次循环对应一个类别目录
    {
        bFinished = fileFinder.FindNextFile();

        // 跳过 . 和 .. ; 否则会陷入无限循环中！！！
        if (fileFinder.IsDots())
        {
            continue;
        }

        if (fileFinder.IsDirectory())
        {
            CString findPath = fileFinder.GetFilePath();
            string subdir = findPath.GetBuffer();
            FindDirAllFileEx(subdir, format, filePath);
            findPath.ReleaseBuffer();
        }
        else
        {
            //获取文件类型
            CString findPath = fileFinder.GetFilePath();
            string file = findPath.GetBuffer();
            string postfix = GetPathFormat(file);

            bool flag = false;
            for (auto it : format)
            {
                if (_stricmp(it.c_str(), postfix.c_str()) == 0)
                {
                    flag = true;
                    break;
                }
            }

            if (flag)
            {
                filePath.push_back(file);
            }

            findPath.ReleaseBuffer();
        }
    }

    fileFinder.Close();
}