C++ Library to handle BagIt structures. BagIt is a standard format to create transfer packages for digital preservation purposes. See https://en.wikipedia.org/wiki/BagIt for details
http://andreas-romeyke.de
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117 lines
3.6 KiB
117 lines
3.6 KiB
// Copyright (C) 2018 Andreas Romeyke (art1@andreas-romeyke.de), 2018.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include "payload.hpp"
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#include <iostream>
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#include <boost/filesystem.hpp>
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#include <boost/filesystem/operations.hpp>
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#include <list>
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#include <string>
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//#include <filesystem> // c++17
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//namespace fs = std::filesystem;
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namespace fs = boost::filesystem;
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using namespace std;
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Payload::Payload( string basedir ) {
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this->basedir = basedir;
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fs::path p{ this->basedir };
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// fs::file_status s = fs::status( p );
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// log << "basedir "<< p.string() << endl;
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// log << "is dir: "<< fs::is_directory( s) << endl;
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// log << "exists: "<< fs::exists(s) << endl;
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};
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void Payload::scan_dir_recursively( const fs::path& directory, list<fs::path> &paths) {
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fs::recursive_directory_iterator iter(directory);
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fs::recursive_directory_iterator end;
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for (; iter != end; ++iter) {
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fs::path subdir = iter->path();
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paths.push_back( subdir );
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}
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}
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// get all relative paths relative to the bag base directory
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list<string> Payload::get_all_relative_paths() {
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list<fs::path> paths;
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list<string> strpaths;
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fs::path directory(this->basedir + "/data");
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if (fs::is_directory( directory )) {
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Payload::scan_dir_recursively( directory, paths);
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for (auto & path : paths) {
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if (fs::is_regular_file( path )) {
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fs::path relpath = fs::relative(path, this->basedir);
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strpaths.push_back( relpath.string() );
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}
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}
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}
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return strpaths;
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}
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list<string> Payload::get_all_absolute_paths() {
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list<fs::path> paths;
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list<string> strpaths;
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fs::path directory(this->basedir + "/data");
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if (fs::is_directory( directory )) {
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Payload::scan_dir_recursively( directory, paths);
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for (auto & path : paths) {
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if (fs::is_regular_file( path )) {
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strpaths.push_back( path.string() );
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}
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}
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}
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return strpaths;
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}
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bool Payload::validate() {
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fs::path directory(this->basedir + "/data");
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return fs::is_directory( directory );
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}
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bool Payload::store( const string& basedir ) {
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string newbasedir = basedir + "data/";
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fs::path p{ newbasedir };
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fs::file_status s = fs::status( p );
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if (fs::is_directory( s)) {
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// TODO(art1): Payload::log << "directory '" << newbasedir << "'already exists" << endl;
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log << "directory '" << newbasedir << "'already exists" << endl;
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return false;
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}
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fs::create_directory(p);
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list<string> paths = Payload::get_all_relative_paths();
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for (const string& relpath : paths) {
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string sourcepath = Payload::basedir + relpath;
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string targetpath = basedir + relpath;
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log << "map '" << sourcepath << "' to '" << targetpath << "'" <<endl;
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fs::path from_fp{ sourcepath };
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fs::path to_fp{ targetpath };
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fs::path parentdir = to_fp.parent_path();
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if (! fs::is_directory (parentdir)) {
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fs::create_directory( parentdir );
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}
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fs::copy_file (from_fp, to_fp);
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}
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return false;
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}
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void Payload::get_logstream( stringstream & log ) {
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log << this->log.rdbuf();
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}
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void Payload::reset_logstream() {
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this->log.str(std::string());
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}
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// vim: set tabstop=4 softtabstop=0 expandtab shiftwidth=4 smarttab
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