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engines/agds/resourceManager.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef RESOURCE_MANAGER_H
+#define RESOURCE_MANAGER_H
+
+#include "common/archive.h"
+#include "common/file.h"
+#include "common/hash-str.h"
+#include "common/hashmap.h"
+#include "common/ptr.h"
+#include "common/scummsys.h"
+#include "common/str.h"
+
+namespace Graphics {
+struct Surface;
+struct PixelFormat;
+} // namespace Graphics
+
+namespace AGDS {
+
+class ResourceManager {
+private:
+	class GrpFile;
+	class ArchiveMember : public Common::ArchiveMember {
+		GrpFile *_parent;
+		Common::String _name;
+		uint32 _offset;
+		uint32 _size;
+
+	public:
+		ArchiveMember(GrpFile *parent, const Common::String &name, uint32 offset, uint32 size) : _parent(parent), _name(name), _offset(offset), _size(size) {
+		}
+		Common::SeekableReadStream *createReadStream() const override;
+		Common::String getName() const override {
+			return getFileName();
+		}
+		Common::Path getPathInArchive() const override {
+			return Common::Path{_name};
+		}
+		Common::String getFileName() const override {
+			return _name;
+		}
+		Common::SeekableReadStream *createReadStreamForAltStream(Common::AltStreamType altStreamType) const override {
+			return nullptr;
+		}
+	};
+	using ArchiveMemberPtr = Common::SharedPtr<ArchiveMember>;
+
+	class GrpFile : public Common::Archive {
+		Common::File _file;
+		bool _encrypted;
+
+		using MembersType = Common::HashMap<Common::String, ArchiveMemberPtr, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo>;
+		MembersType _members;
+
+	public:
+		bool load(const Common::Path &path);
+
+		Common::SeekableReadStream &getArchiveStream() {
+			return _file;
+		}
+
+		bool hasFile(const Common::Path &name) const override;
+		int listMembers(Common::ArchiveMemberList &list) const override;
+		const Common::ArchiveMemberPtr getMember(const Common::Path &name) const override;
+		Common::SeekableReadStream *createReadStreamForMember(const Common::Path &name) const override;
+	};
+
+	static void decrypt(uint8 *data, unsigned size);
+
+	int _version;
+
+public:
+	ResourceManager(int version);
+	~ResourceManager();
+
+	static bool IsBMP(Common::SeekableReadStream &stream);
+
+	bool addPath(const Common::Path &grpFilename);
+
+	Common::SeekableReadStream *getResource(const Common::String &name) const;
+	Graphics::Surface *loadPicture(const Common::String &name, const Graphics::PixelFormat &format);
+
+	Common::String loadText(Common::SeekableReadStream &stream) const;
+	Common::String loadText(const Common::String &name) const;
+};
+
+Common::String readString(Common::ReadStream &stream, uint size = 32);
+void writeString(Common::WriteStream &stream, const Common::String &string, uint size = 32);
+
+} // End of namespace AGDS
+
+#endif /* AGDS_RESOURCE_MANAGER_H */