C++ 获得文件夹中所有文件个数

#include <string>
#include<io.h>
#include<queue>

class GetFileNumTool
{
public:
    //获得所有文件个数
	static int GetFileNum(const std::string& inPath)
    {
        int fileNum = 0;

        std::vector<std::string> pathVec;
        std::queue<std::string> q;
        q.push(inPath);

        while (!q.empty())
        {
            std::string item = q.front(); q.pop();

            std::string path = item + "\*";
            struct _finddata_t fileinfo;
            auto handle = _findfirst(path.c_str(), &fileinfo);
            if (handle == -1) continue;

            while (!_findnext(handle, &fileinfo))
            {
                if (fileinfo.attrib & _A_SUBDIR)
                {
                    if (strcmp(fileinfo.name , ".")==0 || strcmp(fileinfo.name , "..") == 0)continue;
                    q.push(item + "\" + fileinfo.name);
                }
                else
                {
                    fileNum++;
                    pathVec.push_back(item + "\" + fileinfo.name);
                }
            }
            _findclose(handle);
        }
        
        return fileNum;
    }
    //文件个数是否超过某个数值
    static bool IsFolderFileNumTooBigger(const std::string& inPath,int maxNum)
    {
        int fileNum = 0;

        //std::vector<std::string> pathVec;
        std::queue<std::string> q;
        q.push(inPath);
        bool res = false;
        while (!q.empty())
        {
            std::string item = q.front(); q.pop();

            std::string path = item + "\*";
            struct _finddata_t fileinfo;
            auto handle = _findfirst(path.c_str(), &fileinfo);
            if (handle == -1) continue;

            while (!_findnext(handle, &fileinfo))
            {
                if (fileinfo.attrib & _A_SUBDIR)
                {
                    if (strcmp(fileinfo.name, ".") == 0 || strcmp(fileinfo.name, "..") == 0)continue;
                    q.push(item + "\" + fileinfo.name);
                }
                else
                {
                    if (++fileNum > maxNum)
                    {
                        q = std::queue<std::string>();//清空并结束
                        res = true;
                        break;
                    }
                    //pathVec.push_back(item + "\" + fileinfo.name);
                }
            }
            _findclose(handle);
        }

        return res;
    }
 //wstring 版本
    static bool IsFileNumSmallThanMaxNum(const WCHAR* inPath,int maxNum,int& outNum,std::vector<std::wstring>& outVec)
    {
        bool res = true;
        std::queue<std::wstring> q;
        outNum = 0;
        q.push(inPath);
        //std::vector<std::wstring> vec;
        outVec.clear();

        while (!q.empty())
        {
            std::wstring item = q.front(); q.pop();
            std::wstring path = item + L"\*";

            WIN32_FIND_DATA winFindData;

            HANDLE hTemp = FindFirstFile(path.c_str(), &winFindData);

            if (INVALID_HANDLE_VALUE == hTemp) continue;

            while (FindNextFile(hTemp, &winFindData))
            {
                std::wstring fileName = winFindData.cFileName;
                if (L"." == fileName || L".." == fileName) continue;

                //如果是目录
                if (winFindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
                {
                    q.push(item + L"\" + winFindData.cFileName);
                }
                else
                {
                    //if (++outNum > maxNum)
                    //{
                    //    q = std::queue<std::wstring>();//清空并结束
                    //    res = false;
                    //    break;
                    //}
                    {
                        outVec.push_back(item + L"\" + winFindData.cFileName);
                        outNum++;
                    }
                    
                }
            }
            FindClose(hTemp);
        }

        return res;
    }
};

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