AGOS: Add an archive class for handling InstallShield Cabinets

1 files changed, 67 insertions, 0 deletions

diff --git a/engines/agos/installshield_cab.h b/engines/agos/installshield_cab.h
new file mode 100644
index 0000000000..3fb8e66b03
--- /dev/null
+++ b/engines/agos/installshield_cab.h
@@ -0,0 +1,67 @@
+/* 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.
+ *
+ */
+
+#include "common/archive.h"
+#include "common/scummsys.h"
+#include "common/endian.h"
+#include "common/file.h"
+#include "common/hash-str.h"
+#include "common/hashmap.h"
+#include "common/str.h"
+
+#ifndef AGOS_INSTALLSHIELD_CAB_H
+#define AGOS_INSTALLSHIELD_CAB_H
+
+namespace AGOS {
+
+class InstallShieldCabinet : public Common::Archive {
+public:
+	InstallShieldCabinet();
+	~InstallShieldCabinet();
+
+	bool open(const Common::String &filename);
+	void close();
+	bool isOpen() const { return _stream != 0; }
+
+	// Common::Archive API implementation
+	bool hasFile(const Common::String &name);
+	int listMembers(Common::ArchiveMemberList &list);
+	Common::ArchiveMemberPtr getMember(const Common::String &name);
+	Common::SeekableReadStream *createReadStreamForMember(const Common::String &name) const;
+
+private:
+	struct FileEntry {
+		uint32 uncompressedSize;
+		uint32 compressedSize;
+		uint32 offset;
+		uint16 flags;
+	};
+
+	Common::SeekableReadStream *_stream;
+
+	typedef Common::HashMap<Common::String, FileEntry, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> FileMap;
+	FileMap _map;
+};
+
+} // End of namespace AGOS
+
+#endif