Tar.h

/*
╔══════════════════════════════════════════════════════════════════════════════╗
║                       SIMPLY POWERFUL TOOLKIT (SPTK)                         ║
╟──────────────────────────────────────────────────────────────────────────────╢
║  copyright            © 1999-2022 Alexey Parshin. All rights reserved.       ║
║  email                alexeyp@gmail.com                                      ║
╚══════════════════════════════════════════════════════════════════════════════╝
┌──────────────────────────────────────────────────────────────────────────────┐
│   This library is free software; you can redistribute it and/or modify it    │
│   under the terms of the GNU Library General Public License as published by  │
│   the Free Software Foundation; either version 2 of the License, or (at your │
│   option) any later version.                                                 │
│                                                                              │
│   This library is distributed in the hope that it will be useful, but        │
│   WITHOUT ANY WARRANTY; without even the implied warranty of                 │
│   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library   │
│   General Public License for more details.                                   │
│                                                                              │
│   You should have received a copy of the GNU Library General Public License  │
│   along with this library; if not, write to the Free Software Foundation,    │
│   Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.               │
│                                                                              │
│   Please report all bugs and problems to alexeyp@gmail.com.                  │
└──────────────────────────────────────────────────────────────────────────────┘
*/
 
#pragma once
 
#include <sptk5/ArchiveFile.h>
#include <sptk5/Buffer.h>
#include <sptk5/Exception.h>
#include <sptk5/Strings.h>
#include <sptk5/sptk.h>
 
namespace sptk {
 
class SP_EXPORT Tar
{
    using FileCollection = std::map<String, SArchiveFile>;
 
public:
    Tar() = default;
 
    explicit Tar(const Buffer& tarData);
 
    explicit Tar(const String& tarFileName);
 
    void read(const String& fileName)
    {
        read(fileName.c_str());
    }
 
    void read(const char* fileName);
 
    void read(const Buffer& tarData);
 
    [[maybe_unused]] Strings fileList() const
    {
        Strings fileNames;
        for (const auto& [fileName, data]: m_files)
        {
            fileNames.push_back(fileName);
        }
        return fileNames;
    }
 
    const ArchiveFile& file(const String& fileName) const;
 
    void remove(const String& filename);
 
    void append(const SArchiveFile& file);
 
    void save(const String& tarFileName) const;
 
    void clear();
 
private:
    FileCollection m_files; 
    String m_fileName;      
 
    [[nodiscard]] bool readNextFile(const Buffer& buffer, size_t& offset);
};
 
} // namespace sptk