ZVISION: Add support for ZFS archive files

ZfsArchive implements Common::Archive.

1 files changed, 96 insertions, 0 deletions

diff --git a/engines/zvision/zfsArchive.h b/engines/zvision/zfsArchive.h
new file mode 100644
index 0000000000..96c002f815
--- /dev/null
+++ b/engines/zvision/zfsArchive.h
@@ -0,0 +1,96 @@
+/* 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef ZVISION_ZFS_ARCHIVE_H
+#define ZVISION_ZFS_ARCHIVE_H
+
+#include "common/archive.h"
+#include "common/file.h"
+#include "common/fs.h"
+
+namespace ZVision {
+
+struct ZfsHeader {
+	uint32 magic;
+	uint32 unknown1;
+	uint32 unknown2;
+	uint32 filesPerBlock;
+	uint32 fileCount;
+	uint32 xorKey;
+	uint32 fileSectionOffset;
+};
+
+struct ZfsEntryHeader {
+	Common::String name;
+	uint32 offset;
+	uint32 id;
+	uint32 size;
+	uint32 time;
+	uint32 unknown;
+};
+
+typedef Common::HashMap<Common::String, ZfsEntryHeader*, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> ZfsEntryHeaderMap;
+
+class ZfsArchive : public Common::Archive {
+public:
+	ZfsArchive(const Common::String &fileName);
+	ZfsArchive(const Common::String &fileName, Common::SeekableReadStream *stream);
+	~ZfsArchive();
+
+	/**
+	 * Check if a member with the given name is present in the Archive.
+	 * Patterns are not allowed, as this is meant to be a quick File::exists()
+	 * replacement.
+	 */
+	bool hasFile(const Common::String &fileName) const;
+
+	/**
+	 * Add all members of the Archive to list.
+	 * Must only append to list, and not remove elements from it.
+	 *
+	 * @return the number of names added to list
+	 */
+	int listMembers(Common::ArchiveMemberList &list) const;
+
+	/**
+	 * Returns a ArchiveMember representation of the given file.
+	 */
+	const Common::ArchiveMemberPtr getMember(const Common::String &name) const;
+
+	/**
+	 * Create a stream bound to a member with the specified name in the
+	 * archive. If no member with this name exists, 0 is returned.
+	 * @return the newly created input stream
+	 */
+	Common::SeekableReadStream *createReadStreamForMember(const Common::String &name) const;
+
+private:
+	const Common::String _fileName;
+	ZfsEntryHeaderMap _entryHeaders;
+
+	void readHeaders(Common::SeekableReadStream *stream);
+	Common::String readEntryName(Common::SeekableReadStream *stream) const;
+};
+
+} // End of namespace Common
+
+#endif