C++实现文件夹复制

来源：互联网发布：卖血哥玩的软件是什么编辑：程序博客网时间：2024/05/22 05:24

语言：C++

环境：Windows10 x64 visual sudio 2013

Linux Ubuntu16.04 gcc

说明：封装了一个类用于复制文件夹到另一指定目录，

不删除源文件，

不改变源文件/文件夹名。

注意：只能复制指定文件夹下的文件，

无法处理子目录（以后再改），

windows下要用绝对路径。

成员描述：

1、

void copy(const std::string& srcDirPath, const std::string& desDirPath);

类型：公有。

功能：入口函数，给定源文件夹路径（）、和目的文件夹路径，会将源文件夹整个存入目标路径下（而不是只保存内容）。

2、

bool make_dir ( const std::string& pathName);

类型：私有。

功能：用于执行创建文件夹操作，需要提供包含路径的完整文件夹名称

3、

bool get_src_files_name(std::vector<std::string>& fileNameList);

类型：私有。

功能：遍历源文件夹下所有文件名，并存入list中。

4、

void do_copy(const std::vector<std::string>& fileNameList);

类型：私有。

功能：对文件夹下的文件进行拷贝操作，使用到了OpenMP做并行支持，简单使用方法见我另外几篇博文。

http://blog.csdn.net/u012750702/article/details/51476390

http://blog.csdn.net/u012750702/article/details/51769576

代码：

copy_dir.h 文件

/*** author : Ladd7*/#ifndef COPYDIR_H#define COPYDIR_H#include <string>#include <vector>class CopyDir{public:    CopyDir();    void copy(const std::string& srcDirPath, const std::string& desDirPath);public:private:    bool make_dir (const std::string& pathName);//    bool mkdir (char const* pathname/*, mode_t mode*/);    bool get_src_files_name(std::vector<std::string>& fileNameList);    void do_copy(const std::vector<std::string>& fileNameList);private:    std::string srcDirPath, desDirPath;};#endif // COPYDIR_H

copy_dir.cpp 文件

/*** author : Ladd7*/#include "copy_dir.h"#include <iostream>#include <fstream>#include <cstring>#if defined(_WIN32)#   include <direct.h>#   include <io.h>#   include <shlobj.h>#   include <sys/stat.h>#   include <sys/types.h>#else // Linux#   include <dirent.h>#   include <unistd.h>#   include <sys/stat.h>#   include <sys/types.h>#   include <pwd.h>#endifCopyDir::CopyDir(){}voidCopyDir::copy(const std::string& srcDirPath, const std::string& desDirPath){    this->srcDirPath = srcDirPath;    std::string srcDir;#ifdef _WIN32    int n = 0;    while (srcDirPath.find('\\', n) != std::string::npos)    {        n = srcDirPath.find('\\', n) + 1;    }    if(n == 0)    {        std::cout << "src path error" << std::endl;        return;    }    srcDir = srcDirPath.substr(n-1, srcDirPath.size());#else  // Linux    int n = 0;    while (srcDirPath.find('/', n) != std::string::npos)    {        n = srcDirPath.find('/', n) + 1;    }    if(n == 0)    {        std::cout << "src path error" << std::endl;        return;    }    srcDir = srcDirPath.substr(n-1, srcDirPath.size());#endif    this->desDirPath = desDirPath + srcDir;    if(!make_dir(this->desDirPath))    {        return;    }    std::vector<std::string> fileNameList;    if(!get_src_files_name(fileNameList))    {        return;    }    if(fileNameList.empty())    {        std::cout << "src dir is empty" << std::endl;        return;    }    do_copy(fileNameList);}boolCopyDir::make_dir (const std::string& pathName){#ifdef _WIN32    if(::_mkdir(pathName.c_str()) < 0)    {        std::cout << "create path error" << std::endl;        return false;    }#else  // Linux    if(::mkdir(pathName.c_str(), S_IRWXU | S_IRGRP | S_IXGRP) < 0)    {        std::cout << "create path error" << std::endl;        return false;    }#endif    return true;}boolCopyDir::get_src_files_name(std::vector<std::string>& fileNameList){#ifdef _WIN32    _finddata_t file;    long lf;std::string src = this->srcDirPath + "\\*.*";if ((lf = _findfirst(src.c_str(), &file)) == -1) {std::cout << this->srcDirPath << " not found" << std::endl;return false;}else{while (_findnext(lf, &file) == 0){if (strcmp(file.name, ".") == 0 || strcmp(file.name, "..") == 0)continue;fileNameList.push_back(file.name);}}    _findclose(lf);#else  // Linux    DIR *dir;    struct dirent *ptr;    if ((dir=opendir(this->srcDirPath.c_str())) == NULL)    {std::cout << this->srcDirPath << " not found" << std::endl;        return false;    }    while ((ptr=readdir(dir)) != NULL)    {        if((ptr->d_name == ".") || (ptr->d_name == ".."))  //current / parent            continue;        else if(ptr->d_type == 8)  //file            fileNameList.push_back(ptr->d_name);        else if(ptr->d_type == 10)  //link file            continue;        else if(ptr->d_type == 4)  //dir            fileNameList.push_back(ptr->d_name);    }    closedir(dir);#endif    return true;}voidCopyDir::do_copy(const std::vector<std::string> &fileNameList){#pragma omp parallel for    for (int i = 0; i < fileNameList.size(); i++)    {        std::string nowSrcFilePath, nowDesFilePath ;#ifdef _WIN32nowSrcFilePath = this->srcDirPath + "\\" + fileNameList.at(i);nowDesFilePath = this->desDirPath + "\\" + fileNameList.at(i);#else        nowSrcFilePath = this->srcDirPath + "/" + fileNameList.at(i);        nowDesFilePath = this->desDirPath + "/" + fileNameList.at(i);#endif        std::ifstream in;        in.open(nowSrcFilePath);        if(!in)        {            std::cout << "open src file : " << nowSrcFilePath << " failed" << std::endl;            continue;        }        std::ofstream out;        out.open(nowDesFilePath);        if(!out)        {            std::cout << "create new file : " << nowDesFilePath << " failed" << std::endl;            in.close();            continue;        }        out << in.rdbuf();        out.close();        in.close();    }}

测试：

main.cpp文件

#include <iostream>#include "copy_dir.h"using namespace std;int main(int argc, char *argv[]){#ifdef _WIN32std::string src = "F:\\data\\test";std::string des = "F:\\data\\test2";CopyDir cd;cd.copy(src, des);#else    std::string src = "/media/myUbuntu/F/data/test";    std::string des = "/media/myUbuntu/F/data/test2";    CopyDir cd;    cd.copy(src, des);#endif    return 0;}

0 0