The first commit

tools/rareunzip.py

@@ -0,0 +1,28 @@
+import sys
+import zlib
+
+
+def runzip_with_leftovers(data):
+    d = zlib.decompressobj(wbits=-15) # raw deflate bytestream
+    res = d.decompress(data[4:])      # drop 4 byte length header
+    return (res, d.unused_data)
+
+def runzip(data):
+    res, leftovers = runzip_with_leftovers(data)
+    return res
+
+def main():
+    with open(sys.argv[1], "rb") as f:
+        with open(sys.argv[2], "wb") as o:
+            data = f.read()
+            # banjo header
+            if data[:2] == b'\x11\x72':
+                data = data[2:]
+            o.write(runzip(data))
+
+
+if __name__ == '__main__':
+    if len(sys.argv) < 3:
+        print("usage %s infile outfile" % sys.argv[0])
+    else:
+        main()