如何将文件目录和文件大小输出到txt文件。 [英] How do I output file directory and file size to a txt file.

问题描述

我可以输出文件目录。我想广告文件大小也是输出。



我尝试过：

I am able to output file directory. I would like to ad file size to the output as well.

What I have tried:

#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <vector>
#include <string>
#include <iostream>
#include <fstream>

using namespace std;

/*function... might want it in some class?*/
int getdir (string dir, vector<string> &files)
{
    DIR *dp;
    struct dirent *dirp;
    if((dp  = opendir(dir.c_str())) == NULL) {
        cout << "Error(" << errno << ") opening " << dir << endl;
        return errno;
    }

    while ((dirp = readdir(dp)) != NULL) {
        files.push_back(string(dirp->d_name));
    }
    closedir(dp);

    return 0;
}

int main()

{std::ofstream outputFile;
outputFile.open("Files.txt");
    string dir = string(".");
    vector<string> files = vector<string>();

    getdir(dir,files);

    for (unsigned int i = 0;i < files.size();i++) {
        outputFile << files[i] << endl;


    }

    return 0;
}

推荐答案

创建一个 FileItem 类，其中包含名称和大小（以字节为单位）。在阅读每个目录条目时，您需要创建一个新的 FileItem 对象。添加名称，然后测试它是文件还是目录。如果是文件，则获取其大小并将其添加到对象。然后，您可以构建对象的向量（或指向它们的指针），主方法可以使用这些向量写入输出文件，或在屏幕上显示。

Create a FileItem class that will contain the name and the size in bytes. As you read each directory entry you need to create a new FileItem object. Add in the name and then test if it is a file or a directory. If it is a file then get its size and add that to the object. You can then build a vector of your objects (or pointers to them) which your main method can use to write to the output file, or display on screen.

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