Lump

#ifndef LUMP_H
#define LUMP_H

#include <fstream>
#include <memory>
#include <string>

class Lump
{
private:
    std::fstream* m_wad;
    int           m_offset;
    int           m_size;
    std::string   m_name;

public:
    Lump (std::fstream& wad, int offset) : m_wad (&wad)
    {
        char name[8];
        int current = m_wad->tellg ();

        m_wad->seekg (offset);
        m_wad->read  ((char*) &m_offset, 4);
        m_wad->read  ((char*) &m_size, 4);
        m_wad->read  ((char*) &name, 8);
        m_wad->seekg (current);

        m_name = std::string (name, 8).c_str ();
    }

    std::unique_ptr<char> data () const
    {
        std::unique_ptr<char> result (new char[m_size]);
        int current = m_wad->tellg ();

        m_wad->seekg (m_offset);
        m_wad->read  ((char*) result.get (), m_size);
        m_wad->seekg (current);

        return result;
    }

    const std::string& name () const
    {
        return m_name;
    }
};

#endif // LUMP_H