From 1ac13c847b5358faba44dbb638a828e24369467b Mon Sep 17 00:00:00 2001
From: AlexSm <alex@ydb.tech>
Date: Tue, 5 Mar 2024 10:40:59 +0100
Subject: Library import 16 (#2433)
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---
contrib/tools/python3/Lib/email/encoders.py | 65 +++++++++++++++++++++++++++++
1 file changed, 65 insertions(+)
create mode 100644 contrib/tools/python3/Lib/email/encoders.py
(limited to 'contrib/tools/python3/Lib/email/encoders.py')
diff --git a/contrib/tools/python3/Lib/email/encoders.py b/contrib/tools/python3/Lib/email/encoders.py
new file mode 100644
index 0000000000..17bd1ab7b1
--- /dev/null
+++ b/contrib/tools/python3/Lib/email/encoders.py
@@ -0,0 +1,65 @@
+# Copyright (C) 2001-2006 Python Software Foundation
+# Author: Barry Warsaw
+# Contact: email-sig@python.org
+
+"""Encodings and related functions."""
+
+__all__ = [
+ 'encode_7or8bit',
+ 'encode_base64',
+ 'encode_noop',
+ 'encode_quopri',
+ ]
+
+
+from base64 import encodebytes as _bencode
+from quopri import encodestring as _encodestring
+
+
+def _qencode(s):
+ enc = _encodestring(s, quotetabs=True)
+ # Must encode spaces, which quopri.encodestring() doesn't do
+ return enc.replace(b' ', b'=20')
+
+
+def encode_base64(msg):
+ """Encode the message's payload in Base64.
+
+ Also, add an appropriate Content-Transfer-Encoding header.
+ """
+ orig = msg.get_payload(decode=True)
+ encdata = str(_bencode(orig), 'ascii')
+ msg.set_payload(encdata)
+ msg['Content-Transfer-Encoding'] = 'base64'
+
+
+def encode_quopri(msg):
+ """Encode the message's payload in quoted-printable.
+
+ Also, add an appropriate Content-Transfer-Encoding header.
+ """
+ orig = msg.get_payload(decode=True)
+ encdata = _qencode(orig)
+ msg.set_payload(encdata)
+ msg['Content-Transfer-Encoding'] = 'quoted-printable'
+
+
+def encode_7or8bit(msg):
+ """Set the Content-Transfer-Encoding header to 7bit or 8bit."""
+ orig = msg.get_payload(decode=True)
+ if orig is None:
+ # There's no payload. For backwards compatibility we use 7bit
+ msg['Content-Transfer-Encoding'] = '7bit'
+ return
+ # We play a trick to make this go fast. If decoding from ASCII succeeds,
+ # we know the data must be 7bit, otherwise treat it as 8bit.
+ try:
+ orig.decode('ascii')
+ except UnicodeError:
+ msg['Content-Transfer-Encoding'] = '8bit'
+ else:
+ msg['Content-Transfer-Encoding'] = '7bit'
+
+
+def encode_noop(msg):
+ """Do nothing."""
--
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