added v3

venv/lib/python3.11/site-packages/paramiko/compress.py

@@ -0,0 +1,40 @@
+# Copyright (C) 2003-2007  Robey Pointer <robeypointer@gmail.com>
+#
+# 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 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 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.,
+# 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
+
+"""
+Compression implementations for a Transport.
+"""
+
+import zlib
+
+
+class ZlibCompressor:
+    def __init__(self):
+        # Use the default level of zlib compression
+        self.z = zlib.compressobj()
+
+    def __call__(self, data):
+        return self.z.compress(data) + self.z.flush(zlib.Z_FULL_FLUSH)
+
+
+class ZlibDecompressor:
+    def __init__(self):
+        self.z = zlib.decompressobj()
+
+    def __call__(self, data):
+        return self.z.decompress(data)