1 files changed, 83 insertions, 0 deletions
diff --git a/engines/teenagent/pack.cpp b/engines/teenagent/pack.cpp
new file mode 100644
index 0000000000..a0d9bbd499
--- /dev/null
+++ b/engines/teenagent/pack.cpp
@@ -0,0 +1,83 @@
+/* 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.
+ *
+ * $URL: https://www.switchlink.se/svn/teen/pack.cpp $
+ * $Id: pack.cpp 182 2009-08-11 21:16:14Z megath $
+ */
+
+
+#include "pack.h"
+#include "common/util.h"
+#include "common/debug.h"
+
+using namespace TeenAgent;
+
+Pack::Pack() : count(0), offsets(0) {}
+
+Pack::~Pack() {
+	close();
+}
+
+
+void Pack::close() {
+	delete[] offsets;
+	offsets = NULL;
+	file.close();
+}
+
+
+void Pack::open(const Common::String &filename) {
+	file.open(filename);
+	count = file.readUint32LE();
+	debug(0, "opened %s, found %u entries", filename.c_str(), count);
+	offsets = new uint32[count + 1];
+	for(uint32 i = 0; i <= count; ++i) {
+		offsets[i] = file.readUint32LE();
+		//debug(0, "%d: %06x", i, offsets[i]);
+	}
+/*	for(uint32 i = 0; i < count; ++i) {
+		debug(0, "%d: len = %d", i, offsets[i + 1] - offsets[i]);
+	}
+*/
+}
+
+uint32 Pack::get_size(uint32 id) const {
+	if (id < 1 || id > count)
+		return 0;
+	return offsets[id] - offsets[id - 1];
+}
+
+uint32 Pack::read(uint32 id, byte *dst, uint32 size) const {
+	if (id < 1 || id > count)
+		return 0;
+
+	file.seek(offsets[id - 1]);
+	uint32 rsize = offsets[id] - offsets[id - 1];
+	uint32 r = file.read(dst, MIN(rsize, size));
+	//debug(0, "read(%u, %u) = %u", id, size, r);
+	return r;
+}
+
+Common::SeekableReadStream * Pack::getStream(uint32 id) const {
+	if (id < 1 || id > count)
+		return 0;
+	debug(0, "stream: %04x-%04x", offsets[id - 1], offsets[id]);
+	return new Common::SeekableSubReadStream(&file, offsets[id - 1], offsets[id], false);
+}