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