boost之filesystem库，目录文件操作函数

ma_dir_op.h：

////////////////////////////////////////////////////////////////////Descript: directory operation class//  Author: guowenyan//    Date: 2013.06.13//////////////////////////////////////////////////////////////////#pragma once#include <string>#include <vector>class CMaDirOperation{public:static CMaDirOperation *get_instance();public:bool traverse_path(std::vector<std::string> &vec_file_name, const std::string &path, const std::string &file_type = "") const;bool is_file_exist(const std::string &path, const std::string &file_name) const;bool is_file_exist(const std::string &file_name) const;bool delete_file(const std::string &path, const std::string &file_name) const;bool delete_file(const std::string &file_name) const;bool delete_directory(const std::string &path_name) const;void copy_file(const std::string &s_file_name, const std::string &d_file_name) const;void copy_directory(const std::string &s_path_name, const std::string &d_path_name) const;bool chang_file_type(const std::string &file_name, const std::string &s_file_type, const std::string &d_file_type, std::string &changed_file_name) const;private:CMaDirOperation() { };~CMaDirOperation() { };bool is_file_type(const std::string &file_name, const std::string &file_type) const;private:static CMaDirOperation* m_p_instance;};

ma_dir_op.cpp：

////////////////////////////////////////////////////////////////////Descript: directory operation class//  Author: guowenyan//    Date: 2013.06.13//////////////////////////////////////////////////////////////////#include "ma_dir_op.h"#include <iostream>#include <boost/filesystem.hpp>using namespace std;namespace fs = boost::filesystem;CMaDirOperation* CMaDirOperation::m_p_instance = NULL;CMaDirOperation* CMaDirOperation::get_instance(){if(NULL == m_p_instance)m_p_instance = new CMaDirOperation();return m_p_instance;}bool CMaDirOperation::traverse_path(vector<string> &vec_file_name, const string &path, const string &file_type/* = ""*/) const{if(!fs::exists(path)){cout<<"the path "<<path.c_str()<<" is not exist."<<endl;return false;}if(!fs::is_directory(path)){cout<<"the path "<<path.c_str()<<" is not a directory."<<endl;return false;}fs::directory_iterator ite_begin(path);fs::directory_iterator ite_end;for(; ite_begin != ite_end; ite_begin++){fs::path path_tmp(*ite_begin);if(fs::is_regular_file(path_tmp)){path_tmp = path_tmp.filename();string str = path_tmp.string();if(is_file_type(str, file_type))vec_file_name.push_back(str);}}return true;}bool CMaDirOperation::is_file_exist(const string &path, const string &file_name) const{string t_path = path;if( *(t_path.end()-1) != '/' ){t_path += '/';}return is_file_exist(t_path + file_name);;}bool CMaDirOperation::is_file_exist(const string &file_name) const{fs::path path_file(file_name);if(!fs::exists(path_file)){return false;}return fs::is_regular_file(path_file);}bool CMaDirOperation::delete_file(const std::string &path, const std::string &file_name) const{string t_path = path;if( *(t_path.end()-1) != '/' ){t_path += '/';}return delete_file(t_path + file_name);;}bool CMaDirOperation::delete_file(const std::string &file_name) const{/*fs::path path_file(file_name);if(!fs::exists(path_file) || !fs::is_regular_file(path_file)){return false;}return fs::remove(path_file);*/return true;}bool CMaDirOperation::delete_directory(const std::string &path_name) const{vector<string> vec_file_name;if(!traverse_path(vec_file_name, path_name))return false;vector<string>::iterator ite = vec_file_name.begin();for(; ite != vec_file_name.end(); ite++){delete_file(path_name + (*ite));}return true;}void CMaDirOperation::copy_file(const string &s_file_name, const string &d_file_name) const{fs::path s_path(s_file_name);fs::path d_path(d_file_name);fs::copy_file(s_path, d_path, fs::copy_option::fail_if_exists);}void CMaDirOperation::copy_directory(const std::string &s_path_name, const std::string &d_path_name) const{vector<string> vec_file_name;if(traverse_path(vec_file_name, s_path_name)){vector<string>::iterator ite = vec_file_name.begin();for(; ite != vec_file_name.end(); ite++){copy_file(s_path_name + (*ite), d_path_name + (*ite));}}}bool CMaDirOperation::chang_file_type(const string &file_name, const std::string &s_file_type, const std::string &d_file_type, std::string &changed_file_name) const{if(!is_file_type(file_name, s_file_type)){cout<<"File name "<<file_name.c_str()<<" is not mached file type "<<s_file_type.c_str()<<" in CMaDirOperation::chang_file_type()."<<endl;return false;}changed_file_name = file_name;int len = s_file_type.length();changed_file_name.replace(changed_file_name.length()-len, len, d_file_type);return true;}bool CMaDirOperation::is_file_type(const string &file_name, const string &file_type) const{string str = file_name;int len = file_type.length();if(0 == str.substr(str.length()-len, len).compare(file_type))return true;return false;}