linux c++删除文件夹

在C++编程中有时需要删除一些文件或者文件夹。

头文件

#ifndef _FILEMANGEER_H
#define _FILEMANGEER_H#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
using namespace std;
int removeFileAndDirectory(const std::string& path);
int copyFileAndDirectory(const std::string& old_path, const std::string& new_path);
int copyFile(const std::string& old_name, const std::string& new_name);
static bool isDirectory(const std::string& filefodler);
static bool isFile(const std::string& filename);
#endif

函数

#include "fileManage.h"/* Check whether the path identified by 'filename' is a file */
static bool isFile(const std::string& filename) {struct stat   buffer;return (stat (filename.c_str(), &buffer) == 0 && S_ISREG(buffer.st_mode));
}/* Check whether the path identified by 'filefodler' is a fodler */
static bool isDirectory(const std::string& filefodler) {struct stat   buffer;return (stat (filefodler.c_str(), &buffer) == 0 && S_ISDIR(buffer.st_mode));
}/* Copy the file named by old_name to new_name */
int copyFile(const std::string& old_name, const std::string& new_name)
{std::ifstream ifs(old_name, std::ifstream::binary);std::ofstream ofs(new_name, std::ifstream::binary| std::ifstream::trunc);if(ifs.good() == false){return -1;}ofs << ifs.rdbuf();ifs.close();ofs.close();return 0;
}/* Copy all files and sub directories in directory to new path */
int copyFileAndDirectory(const std::string& old_path, const std::string& new_path)
{int result = 0;DIR * p_dir;  struct dirent * p_dirent; if(isDirectory(old_path)){if(access(new_path.c_str(),0) == -1){if(mkdir(new_path.c_str(), 0755) < 0){std::cout<< "[copyFileAndDirectory] mkdir failed , the errno = " << strerror(errno) << std::endl;return -1;}}if((p_dir = opendir(old_path.c_str())) == NULL ){  std::cout << "Usage:cp -r   error: " << strerror(errno) << std::endl;return -1;  }  while((p_dirent = readdir(p_dir)) != NULL){std::string file_name = old_path + "/" + p_dirent->d_name;std::string new_file_name = new_path + "/" + p_dirent->d_name;// It is a directoryif(isDirectory(file_name) && (0 != strcmp(p_dirent->d_name, ".")) && (0 != strcmp(p_dirent->d_name, ".."))){result = copyFileAndDirectory(file_name,new_file_name);if(result < 0){return result;}}else if((0 != strcmp(p_dirent->d_name, ".")) && (0 != strcmp(p_dirent->d_name, ".."))){result = copyFile(file_name, new_file_name);if(result < 0){return result;}}}closedir(p_dir);}return result;
}/* Remove all files and sub directories in directory */
int removeFileAndDirectory(const std::string& path)
{int result = 0;DIR * p_dir;struct dirent * p_dirent;if(isDirectory(path)){if((p_dir = opendir(path.c_str())) == NULL )  {  std::cout << "Opendir error: " << strerror(errno) << std::endl;return -1;  }  while((p_dirent = readdir(p_dir)) != NULL){std::string file_name = path + "/" + p_dirent->d_name;/* It is a directory */if(isDirectory(file_name) && (0 != strcmp(p_dirent->d_name, ".")) && (0 != strcmp(p_dirent->d_name, ".."))){result = removeFileAndDirectory(file_name);if(result < 0){return result;}}/* It is a file */else if((0 != strcmp(p_dirent->d_name, ".")) && (0 != strcmp(p_dirent->d_name, ".."))){result = remove(file_name.c_str());if(result < 0){return result;}}else{/* do nothing */}}closedir(p_dir);result = rmdir(path.c_str());}else if(isFile(path)){result = remove(path.c_str());}else{/* do nothing */}return result;
}

测试程序

#include "fileManage.h"int main()
{//rm_dir("src");string des="src";removeFileAndDirectory(des);
}

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