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/*
* archive.h
* ---------
* Purpose: archive loader
* Notes : (currently none)
* Authors: OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#pragma once
#include "openmpt/all/BuildSettings.hpp"
#include "../common/FileReader.h"
#include <string>
#include <vector>
OPENMPT_NAMESPACE_BEGIN
enum class ArchiveFileType
{
Invalid,
Normal,
Special,
};
struct ArchiveFileInfo
{
mpt::PathString name;
ArchiveFileType type = ArchiveFileType::Invalid;
uint64 size = 0;
mpt::ustring comment;
uint64 cookie1 = 0;
uint64 cookie2 = 0;
};
class IArchive
{
public:
using const_iterator = std::vector<ArchiveFileInfo>::const_iterator;
protected:
IArchive() {}
public:
virtual ~IArchive() {}
public:
virtual bool IsArchive() const = 0;
virtual mpt::ustring GetComment() const = 0;
virtual bool ExtractFile(std::size_t index) = 0;
virtual FileReader GetOutputFile() const = 0;
virtual std::size_t size() const = 0;
virtual IArchive::const_iterator begin() const = 0;
virtual IArchive::const_iterator end() const = 0;
virtual const ArchiveFileInfo & operator [] (std::size_t index) const = 0;
};
class ArchiveBase
: public IArchive
{
protected:
FileReader inFile;
mpt::ustring comment;
std::vector<ArchiveFileInfo> contents;
std::vector<char> data;
public:
ArchiveBase(const FileReader &inFile)
: inFile(inFile)
{
return;
}
~ArchiveBase() override
{
return;
}
bool ExtractFile(std::size_t index) override { MPT_UNREFERENCED_PARAMETER(index); return false; } // overwrite this
public:
bool IsArchive() const override
{
return !contents.empty();
}
mpt::ustring GetComment() const override
{
return comment;
}
FileReader GetOutputFile() const override
{
return FileReader(mpt::byte_cast<mpt::const_byte_span>(mpt::as_span(data)));
}
std::size_t size() const override { return contents.size(); }
IArchive::const_iterator begin() const override { return contents.begin(); }
IArchive::const_iterator end() const override { return contents.end(); }
const ArchiveFileInfo & operator [] (std::size_t index) const override { return contents[index]; }
};
OPENMPT_NAMESPACE_END
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