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engines/ngi/ngiarchive.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 NGI_NGIARCHIVE_H
+#define NGI_NGIARCHIVE_H
+
+#include "common/archive.h"
+
+namespace Common {
+class File;
+}
+
+namespace NGI {
+
+#define NGI_FILENAME_MAX 13
+
+struct NgiHeader {
+	int32 pos;
+	int32 extVal;
+	int32 flags;
+	int32 size;
+	char  filename[NGI_FILENAME_MAX];
+};
+
+typedef Common::HashMap<Common::Path, Common::ScopedPtr<NgiHeader>, Common::Path::IgnoreCase_Hash, Common::Path::IgnoreCase_EqualTo> NgiHeadersMap;
+
+class NGIArchive : public Common::Archive {
+	NgiHeadersMap _headers;
+	Common::File *_ngiFile;
+
+public:
+	NGIArchive(const Common::Path &name);
+	~NGIArchive() override;
+
+	// Archive implementation
+	bool hasFile(const Common::Path &path) const override;
+	int listMembers(Common::ArchiveMemberList &list) const override;
+	const Common::ArchiveMemberPtr getMember(const Common::Path &path) const override;
+	Common::SeekableReadStream *createReadStreamForMember(const Common::Path &path) const override;
+};
+
+/**
+ * This factory method creates an Archive instance corresponding to the content
+ * of the NGI compressed file with the given name.
+ *
+ * May return 0 in case of a failure.
+ */
+NGIArchive *makeNGIArchive(const Common::Path &name);
+
+} // End of namespace NGI
+
+#endif