【C++】基于linux文件管理和C＋＋的I/O框架，实现命令行下的文件管理器

一、实验项目内容

1、实现文件夹创建、删除、进入。
2、实现当前文件夹下的内容罗列。
3、实现文件拷贝和文件夹拷贝（文件夹拷贝指深度拷贝，包括所有子目录和文件）。

二、实验过程或算法

DocumentManger.h

#ifndef CIRCLE_H#define CIRCLE_H#include<stdlib.h>#include <stdio.h>#include <errno.h>#include <sys/types.h>#include <sys/stat.h>#include <unistd.h>#include <dirent.h>#include <string.h>#include<sstream>#include<iostream>#include <dirent.h>#include <fstream>using namespace std;class DocumentManager {                         //DocumentManger 文件管理类private:    char *path;    char *newpath;public:    DocumentManager();                         //构造函数1    DocumentManager( char *path);              //构造函数2    void setNewpath( char* newpath);    void setPath( char* path);    void displayTips();                            //命令提示行    int make_dir(const char *path, mode_t mode);   //创建文件夹    int change_dir(const char *path);              //改变路径    int remove_dir(const char* path);              //移除文件夹    int get_file_size_time(const char *filename);  //获取文件的信息    DIR * open_dir(const char *path);              //打开文件夹    void read_dir(const char *path, bool ListAllFiles);    //读取文件夹    int copy_dir(const char *filename, const char *newfilename);   //拷贝文件夹};#endif

DocumentManager.cpp

#include "DocumentManager.h"DocumentManager::DocumentManager() {    this->path = NULL;}DocumentManager::DocumentManager(char *path) {    this->path = path;}void DocumentManager::setNewpath(char* newpath) {    this->newpath = newpath;}void DocumentManager::setPath(char* path) {           //store this current path    this->path = path;}void DocumentManager::displayTips() {                 //display these tips    cout << "please input commands as the following: " << endl;    cout << "0.mkdir [path]" << endl;    cout << "1.chdir [path]" << endl;    cout << "2.rmdir [path]" << endl;    cout << "3.opendir [path]" << endl;    cout << "4.readdir [path]" << endl;    cout << "5.lldir [path]" << endl;    cout << "5.copy [path] [newPath]" << endl;    cout << "7.exit" << endl;}int DocumentManager::make_dir(const char *path, mode_t mode){    if (mkdir(path,mode) != 0) {                       //make dir with mode        cerr << "make dir fail" << endl;    } else {        cout << "make dir success" << endl;    }    return 0;}int DocumentManager::get_file_size_time(const char *filename){    struct stat statbuf;                               //get the informations of file    if (stat(filename, &statbuf) == -1) {        cerr << "Get stat on" << filename << "  Error: " << endl;        cerr << strerror(errno) << endl;    }    if (S_ISDIR(statbuf.st_mode)) {    }    if (S_ISREG(statbuf.st_mode)) {        cout << filename << " size:" << statbuf.st_size << " bytes"                << " modified at " << ctime(&statbuf.st_mtime) << endl;    }    return 0;}int DocumentManager::change_dir(const char *path ){   //change the dir    this->path=(char*)path;    if (chdir(path) != 0) {        cout << "change dir fail" << endl;    } else {        cout << "change dir success" << endl;    }    return 0;}int DocumentManager::remove_dir(const char* path){    //remove dir    DIR *dirp=opendir(path);    if(dirp==NULL){                                   //打开文件夹失败        perror(path);                                 //输出错误的原因        return 0;    }    struct dirent *entry;    int ret;    while (1) {        entry = readdir(dirp);        if (entry == NULL) {                          //若父目录为空，直接退出循环            break;        }        if(strcmp(".",entry->d_name)==0||strcmp("..",entry->d_name)==0){            continue;        }        char buf[80];        snprintf(buf,80,"%s/%s",path,entry->d_name);  //重构子目录        ret=remove(buf);                              //delete these files        if(ret==-1){            if(errno==ENOTEMPTY){                     //删除失败                remove_dir(buf);                continue;            }            perror(buf);                              //输出失败的原因            return 0;        }    }    closedir(dirp);    ret=rmdir(path);                                  //delete the empty dir    if(ret==-1){        perror(path);    }    else{        cout<<"remove dir success!"<<endl;    }    return 0;}DIR * DocumentManager::open_dir(const char *path) {    DIR *dirp=opendir(path);                          //open the dir    if (dirp!= NULL) {        cout << "open dir success" << endl;    }    else{        cerr<<"Open Directory"<<path<<"  Error: "<<endl;        cerr<<strerror(errno)<<endl;    }    closedir(dirp);                                    //closedir    return dirp;}void DocumentManager::read_dir(const char *path,bool JustListFileName){    DIR *dirp=opendir(path);    struct dirent *direntp;    static char dot[] = ".", dotdot[] = "..";    char buf[80];    while ((direntp = readdir(dirp)) != NULL) {        if (strcmp(direntp->d_name, dot) && strcmp(direntp->d_name, dotdot)) {            if (JustListFileName) {                  //just read the filename                cout << direntp->d_name << endl;            } else {                sprintf(buf, "%s/%s", path, direntp->d_name);                if (get_file_size_time(buf) == -1)          //get the information                    break;            }        }    }    closedir(dirp);                                 //closedir}int DocumentManager::copy_dir(const char *filename, const char *newfilename) {    struct stat cur_file;    stat(filename, &cur_file);    if (S_ISDIR(cur_file.st_mode)) {               //路径是文件夹        DIR *cur_dir;        dirent *cur_ent;        int errnum = 0;        if ((cur_dir = opendir(filename)) == NULL){            return 1;        }        if (access(newfilename, F_OK)){          //文件夹不存在，创建这个目标文件夹            errnum |= mkdir(newfilename, S_IRWXU);        }        while ((cur_ent = readdir(cur_dir)) != NULL)    //递归，复制子目录            if (strcmp(cur_ent->d_name, ".") && strcmp(cur_ent->d_name, "..")) {                errnum |= copy_dir(((string)filename + "/" + cur_ent->d_name).c_str(),                        ((string)newfilename + "/" + cur_ent->d_name).c_str());            }        closedir(cur_dir);                       //close dir        return errnum;    } else {                                    //路径是文件名        if (filename == newfilename){           //若两个路径相同则视为无效，退出            return 0;        }        fstream fsin, fsout;                   //拷贝文件        fsin.open(filename,ios::in | ios::binary);        fsout.open(newfilename, ios::out |ios::binary);        fsout << fsin.rdbuf();        return 1;    }}

DocumenManger的测试类：

#include "DocumentManager.h"#include<stdlib.h>#include <stdio.h>#include <sys/types.h>#include <sys/stat.h>#include <unistd.h>#include <dirent.h>#include <errno.h>#include <string.h>#include<sstream>#include<iostream>#include <dirent.h>#include <fstream>using namespace std;int main(){    DocumentManager documentmanger;              //declare a DocumentManager    documentmanger.displayTips();                //outputs the tips    string input, command, path, newPath;    int i;    while (getline(cin, input)) {        istringstream is(input);        string s;                                //deal this inputs        for (i = 0; is >> s; i++) {            if (s.compare("exit") == 0) {        //command is exit                exit(0);            }        }        if (i != 2 & i != 3) {            cerr << "your input is Illegal" << endl;            continue;        }        istringstream temp(input);        temp >> command >> path >> newPath;        if (command.compare("mkdir") == 0) {     //command is mkdir            const char* pa = path.c_str();            documentmanger.make_dir(pa, 0755);        }        else if (command.compare("chdir") == 0) {//command is chdir            const char* pa = path.c_str();            documentmanger.change_dir(pa);        }        else if (command.compare("rmdir") == 0) {//command is rmdir            const char* pa = path.c_str();            documentmanger.remove_dir((char* )pa);        }        else if (command.compare("opendir") == 0) {//command is opendir            const char* pa = path.c_str();            documentmanger.open_dir((pa));        }        else if (command.compare("readdir") == 0) {//command is readdir            const char* pa = path.c_str();            documentmanger.read_dir(pa,1);        }        else if (command.compare("lldir") == 0) {//command is lldir            const char* pa = path.c_str();            documentmanger.read_dir(pa,0);        }        else if (command.compare("copy") == 0) { //command is copy            const char* pa = path.c_str();            const char* npa = newPath.c_str();            documentmanger.copy_dir(pa, npa);        }    }    return 0;}

三、实验结果和截图