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134 lines
3.9 KiB
C++
134 lines
3.9 KiB
C++
/*
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OpenMW - The completely unofficial reimplementation of Morrowind
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Copyright (C) 2008-2010 Nicolay Korslund
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Email: < korslund@gmail.com >
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WWW: http://openmw.sourceforge.net/
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This file (compressedbsafile.hpp) is part of the OpenMW package.
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OpenMW is distributed as free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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version 3, as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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version 3 along with this program. If not, see
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http://www.gnu.org/licenses/ .
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Compressed BSA stuff added by cc9cii 2018
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*/
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#ifndef BSA_COMPRESSED_BSA_FILE_H
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#define BSA_COMPRESSED_BSA_FILE_H
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#include <limits>
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#include <map>
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#include <components/bsa/bsa_file.hpp>
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#include <filesystem>
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namespace Bsa
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{
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class CompressedBSAFile : private BSAFile
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{
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private:
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enum ArchiveFlags
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{
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ArchiveFlag_FolderNames = 0x0001,
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ArchiveFlag_FileNames = 0x0002,
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ArchiveFlag_Compress = 0x0004,
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ArchiveFlag_RetainDir = 0x0008,
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ArchiveFlag_RetainName = 0x0010,
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ArchiveFlag_RetainFileOffset = 0x0020,
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ArchiveFlag_Xbox360 = 0x0040,
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ArchiveFlag_StartUpStr = 0x0080,
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ArchiveFlag_EmbeddedNames = 0x0100,
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ArchiveFlag_XMem = 0x0200,
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};
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enum Version
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{
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Version_TES4 = 0x67,
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Version_FO3 = 0x68,
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Version_SSE = 0x69,
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};
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enum FileFlags
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{
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FileFlag_NIF = 0x001,
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FileFlag_DDS = 0x002,
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FileFlag_XML = 0x004,
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FileFlag_WAV = 0x008,
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FileFlag_MP3 = 0x010,
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FileFlag_TXT = 0x020, // TXT, HTML, BAT, SCC
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FileFlag_SPT = 0x040,
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FileFlag_FNT = 0x080, // TEX, FNT
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FileFlag_MISC = 0x100, // CTL and others
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};
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enum FileSizeFlags
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{
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FileSizeFlag_Compression = 0x40000000,
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};
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struct Header
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{
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std::uint32_t mFormat;
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std::uint32_t mVersion;
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std::uint32_t mFoldersOffset;
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std::uint32_t mFlags;
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std::uint32_t mFolderCount;
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std::uint32_t mFileCount;
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std::uint32_t mFolderNamesLength;
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std::uint32_t mFileNamesLength;
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std::uint32_t mFileFlags;
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};
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Header mHeader;
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struct FileRecord
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{
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std::uint64_t mHash;
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std::vector<char> mName;
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std::uint32_t mSize{ 0u };
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std::uint32_t mOffset{ std::numeric_limits<uint32_t>::max() };
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};
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struct FolderRecord
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{
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std::uint32_t mCount;
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std::int64_t mOffset;
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std::map<std::uint64_t, FileRecord> mFiles;
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};
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std::map<std::uint64_t, FolderRecord> mFolders;
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FileRecord getFileRecord(const std::string& str) const;
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/// \brief Normalizes given filename or folder and generates format-compatible hash.
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static std::uint64_t generateHash(const std::filesystem::path& stem, std::string extension);
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Files::IStreamPtr getFile(const FileRecord& fileRecord);
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public:
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using BSAFile::getFilename;
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using BSAFile::getList;
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using BSAFile::open;
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CompressedBSAFile() = default;
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virtual ~CompressedBSAFile() = default;
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/// Read header information from the input source
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void readHeader() override;
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Files::IStreamPtr getFile(const char* filePath);
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Files::IStreamPtr getFile(const FileStruct* fileStruct);
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void addFile(const std::string& filename, std::istream& file);
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};
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}
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#endif
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