mirror of
https://github.com/libretro/scummvm.git
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170 lines
5.9 KiB
C++
170 lines
5.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef KYRA_RESOURCE_INTERN_H
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#define KYRA_RESOURCE_INTERN_H
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#include "common/archive.h"
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#include "common/hash-str.h"
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#include "common/hashmap.h"
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#include "common/str.h"
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#include "common/list.h"
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#include "common/stream.h"
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namespace Kyra {
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class Resource;
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class PlainArchive : public Common::Archive {
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public:
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struct Entry {
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Entry() : offset(0), size(0) {}
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Entry(uint32 o, uint32 s) : offset(o), size(s) {}
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uint32 offset;
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uint32 size;
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};
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PlainArchive(Common::ArchiveMemberPtr file);
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void addFileEntry(const Common::String &name, const Entry entry);
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Entry getFileEntry(const Common::String &name) const;
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// Common::Archive API implementation
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bool hasFile(const Common::Path &path) const override;
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int listMembers(Common::ArchiveMemberList &list) const override;
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const Common::ArchiveMemberPtr getMember(const Common::Path &path) const override;
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Common::SeekableReadStream *createReadStreamForMember(const Common::Path &path) const override;
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private:
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typedef Common::HashMap<Common::String, Entry, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> FileMap;
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Common::ArchiveMemberPtr _file;
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FileMap _files;
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};
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class TlkArchive : public Common::Archive {
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public:
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TlkArchive(Common::ArchiveMemberPtr file, uint16 entryCount, const uint32 *fileEntries);
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~TlkArchive() override;
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bool hasFile(const Common::Path &path) const override;
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int listMembers(Common::ArchiveMemberList &list) const override;
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const Common::ArchiveMemberPtr getMember(const Common::Path &path) const override;
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Common::SeekableReadStream *createReadStreamForMember(const Common::Path &path) const override;
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private:
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Common::ArchiveMemberPtr _file;
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const uint32 *findFile(const Common::String &name) const;
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const uint16 _entryCount;
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const uint32 *const _fileEntries;
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};
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class CachedArchive : public Common::Archive {
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public:
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struct InputEntry {
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Common::String name;
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byte *data;
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uint32 size;
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};
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typedef Common::List<InputEntry> FileInputList;
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CachedArchive(const FileInputList &files);
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~CachedArchive() override;
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bool hasFile(const Common::Path &path) const override;
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int listMembers(Common::ArchiveMemberList &list) const override;
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const Common::ArchiveMemberPtr getMember(const Common::Path &path) const override;
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Common::SeekableReadStream *createReadStreamForMember(const Common::Path &path) const override;
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private:
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struct Entry {
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byte *data;
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uint32 size;
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};
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typedef Common::HashMap<Common::String, Entry, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> FileMap;
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FileMap _files;
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};
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class ResArchiveLoader {
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public:
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virtual ~ResArchiveLoader() {}
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virtual bool checkFilename(Common::String filename) const = 0;
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virtual bool isLoadable(const Common::String &filename, Common::SeekableReadStream &stream) const = 0;
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virtual Common::Archive *load(Common::ArchiveMemberPtr file, Common::SeekableReadStream &stream) const = 0;
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};
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class ResLoaderPak : public ResArchiveLoader {
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public:
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bool checkFilename(Common::String filename) const override;
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bool isLoadable(const Common::String &filename, Common::SeekableReadStream &stream) const override;
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Common::Archive *load(Common::ArchiveMemberPtr file, Common::SeekableReadStream &stream) const override;
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};
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class ResLoaderInsMalcolm : public ResArchiveLoader {
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public:
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bool checkFilename(Common::String filename) const override;
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bool isLoadable(const Common::String &filename, Common::SeekableReadStream &stream) const override;
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Common::Archive *load(Common::ArchiveMemberPtr file, Common::SeekableReadStream &stream) const override;
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};
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class ResLoaderTlk : public ResArchiveLoader {
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public:
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bool checkFilename(Common::String filename) const override;
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bool isLoadable(const Common::String &filename, Common::SeekableReadStream &stream) const override;
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Common::Archive *load(Common::ArchiveMemberPtr file, Common::SeekableReadStream &stream) const override;
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};
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class InstallerLoader {
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public:
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static Common::Archive *load(Resource *owner, const Common::String &filename, const Common::String &extension, const uint8 offset);
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};
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class EndianAwareStreamWrapper : public Common::SeekableReadStreamEndian {
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public:
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EndianAwareStreamWrapper(Common::SeekableReadStream *stream, bool bigEndian, bool disposeAfterUse = true) : Common::SeekableReadStreamEndian(bigEndian), Common::ReadStreamEndian(bigEndian), _stream(stream), _dispose(disposeAfterUse) {}
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~EndianAwareStreamWrapper() override { if (_dispose) delete _stream; }
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// Common::Stream interface
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bool err() const override { return _stream->err(); }
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// Common::ReadStream interface
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bool eos() const override { return _stream->eos(); }
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uint32 read(void *dataPtr, uint32 dataSize) override { return _stream->read(dataPtr, dataSize); }
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// Common::SeekableReadStream interface
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int64 pos() const override { return _stream->pos(); }
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int64 size() const override { return _stream->size(); }
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bool seek(int64 offset, int whence = SEEK_SET) override { return _stream->seek(offset, whence); }
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private:
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Common::SeekableReadStream *_stream;
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bool _dispose;
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};
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} // End of namespace Kyra
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#endif
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