Table of Contents
文本路径读取
C++代码实现如下:
Home Backend Development C#.Net Tutorial How to quickly generate the text path of data? C++ implements text path generation

How to quickly generate the text path of data? C++ implements text path generation

Aug 06, 2018 pm 03:10 PM
Data preprocessing

文本路径读取

在机器学习模型训练前期,需要对数据、图像、文本等进行预处理,而如何快速生成数据的文本路径呢?本文接下来直接使用C++实现文本路径生成,可查找固定格式如.jpg.txt 等文件路径(绝对路径或文件名),然后保存为.txt 文本,方便后期图片数据读取使用。


C++代码实现如下:

#include <io.h>#include <fstreanm>#include <string>#include <vector>#include <iostream>using namespace std;void GetAllFiles(string path, vector<string>& files, string format)
{    long hfile = 0;    struct _finddata_t fileinfo; //用来存储文件信息的结构体
    string p;    if(hfile = _findfirst(p.assign(path).append("\\*" + format).c_str(), &fileinfo)) != -1) //第一次查找
    {        do{            //files.push_back(p.assign(fileinfo.name)); //只保存文件名files.push_back(p.assign(path).appand("\\").append(fileinfo.name)); //保存文件路径和文件名
        }while(_findnext(hfile, &fileinfo) == 0);
        _findclose(hfile)
    }    else if((hfile = _findfirst(p.assign(path).append("\\*").c_str(), &fileinfo)) != -1)
    {        do{            if((fileinfo.attrib & _A_SUBDIR)) //如果查找到的是文件夹
            {                if(strcmp(fileinfo.name, ".") != 0 && strcmp(fileinfo.name, "..") != 0) //进入文件夹查找
                {
                    GetAllFiles(p.assign(path).append("\\").append(fileinfo.name), files, format);
                }
            }            else //如果查找的不是文件夹
            {                //files.push_back(p.assign(fileinfo.name)); //只保存文件名    files.push_back(p.assign(path).appand("\\").append(fileinfo.name)); //保存文件路径和文件名
            }
        }while(_findnext(hfile, &fileinfo) == 0);
        _findclose(hfile)
    }
}int main()
{    string filepath = "D:\\path..."; //文件根目录
    vector<string> files;    char *dstAll = "path.txt";    //读取所以格式为jpg的文件
    string format = ".jpg";
    GetAllFiles(filepath, files, format);
    ofstream ofn(distAll);    int size = files.size();    for(int i = 0; i<size; i++)
    {
        ofn<<files[i]<<endl; //写入文件
        cout<<files[i]<<endl; //输出到屏幕
    }
    ofn.close();    cout<<"file number: "<<size<<endl;
    system("pause";)    return 0;
}
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注意:如果format赋值出错会进入死循环。

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