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-rw-r--r--paramiko/compress.py39
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+# Copyright (C) 2003-2005 Robey Pointer <robey@lag.net>
+#
+# This file is part of paramiko.
+#
+# Paramiko is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# Paramiko is distrubuted 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 Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+"""
+Compression implementations for a Transport.
+"""
+
+import zlib
+
+
+class ZlibCompressor (object):
+ def __init__(self):
+ self.z = zlib.compressobj(9)
+
+ def __call__(self, data):
+ return self.z.compress(data) + self.z.flush(zlib.Z_FULL_FLUSH)
+
+
+class ZlibDecompressor (object):
+ def __init__(self):
+ self.z = zlib.decompressobj()
+
+ def __call__(self, data):
+ return self.z.decompress(data)