def get_payload(self, i=None, decode=False):
"""Return a reference to the payload.
The payload will either be a list object or a string. If you mutate
the list object, you modify the message's payload in place. Optional
i returns that index into the payload.
Optional decode is a flag indicating whether the payload should be
decoded or not, according to the Content-Transfer-Encoding header
(default is False).
When True and the message is not a multipart, the payload will be
decoded if this header's value is `quoted-printable' or `base64'. If
some other encoding is used, or the header is missing, or if the
payload has bogus data (i.e. bogus base64 or uuencoded data), the
payload is returned as-is.
If the message is a multipart and the decode flag is True, then None
is returned.
"""
# Here is the logic table for this code, based on the email5.0.0 code:
# i decode is_multipart result
# ------ ------ ------------ ------------------------------
# None True True None
# i True True None
# None False True _payload (a list)
# i False True _payload element i (a Message)
# i False False error (not a list)
# i True False error (not a list)
# None False False _payload
# None True False _payload decoded (bytes)
# Note that Barry planned to factor out the 'decode' case, but that
# isn't so easy now that we handle the 8 bit data, which needs to be
# converted in both the decode and non-decode path.
if self.is_multipart():
if decode:
return None
if i is None:
return self._payload
else:
return self._payload[i]
# For backward compatibility, Use isinstance and this error message
# instead of the more logical is_multipart test.
if i is not None and not isinstance(self._payload, list):
raise TypeError('Expected list, got %s' % type(self._payload))
payload = self._payload
# cte might be a Header, so for now stringify it.
cte = str(self.get('content-transfer-encoding', '')).lower()
# payload may be bytes here.
if isinstance(payload, str):
payload = str(
payload) # for Python-Future, so surrogateescape works
if utils._has_surrogates(payload):
bpayload = payload.encode('ascii', 'surrogateescape')
if not decode:
try:
payload = bpayload.decode(
self.get_param('charset', 'ascii'), 'replace')
except LookupError:
payload = bpayload.decode('ascii', 'replace')
elif decode:
try:
bpayload = payload.encode('ascii')
except UnicodeError:
# This won't happen for RFC compliant messages (messages
# containing only ASCII codepoints in the unicode input).
# If it does happen, turn the string into bytes in a way
# guaranteed not to fail.
bpayload = payload.encode('raw-unicode-escape')
if not decode:
return payload
if cte == 'quoted-printable':
return utils._qdecode(bpayload)
elif cte == 'base64':
# XXX: this is a bit of a hack; decode_b should probably be factored
# out somewhere, but I haven't figured out where yet.
value, defects = decode_b(b''.join(bpayload.splitlines()))
for defect in defects:
self.policy.handle_defect(self, defect)
return value
elif cte in ('x-uuencode', 'uuencode', 'uue', 'x-uue'):
in_file = BytesIO(bpayload)
out_file = BytesIO()
try:
uu.decode(in_file, out_file, quiet=True)
return out_file.getvalue()
except uu.Error:
# Some decoding problem
return bpayload
if isinstance(payload, str):
return bpayload
return payload
def get_payload(self, i=None, decode=False):
"""Return a reference to the payload.
The payload will either be a list object or a string. If you mutate
the list object, you modify the message's payload in place. Optional
i returns that index into the payload.
Optional decode is a flag indicating whether the payload should be
decoded or not, according to the Content-Transfer-Encoding header
(default is False).
When True and the message is not a multipart, the payload will be
decoded if this header's value is `quoted-printable' or `base64'. If
some other encoding is used, or the header is missing, or if the
payload has bogus data (i.e. bogus base64 or uuencoded data), the
payload is returned as-is.
If the message is a multipart and the decode flag is True, then None
is returned.
"""
# Here is the logic table for this code, based on the email5.0.0 code:
# i decode is_multipart result
# ------ ------ ------------ ------------------------------
# None True True None
# i True True None
# None False True _payload (a list)
# i False True _payload element i (a Message)
# i False False error (not a list)
# i True False error (not a list)
# None False False _payload
# None True False _payload decoded (bytes)
# Note that Barry planned to factor out the 'decode' case, but that
# isn't so easy now that we handle the 8 bit data, which needs to be
# converted in both the decode and non-decode path.
if self.is_multipart():
if decode:
return None
if i is None:
return self._payload
else:
return self._payload[i]
# For backward compatibility, Use isinstance and this error message
# instead of the more logical is_multipart test.
if i is not None and not isinstance(self._payload, list):
raise TypeError('Expected list, got %s' % type(self._payload))
payload = self._payload
# cte might be a Header, so for now stringify it.
cte = str(self.get('content-transfer-encoding', '')).lower()
# payload may be bytes here.
if isinstance(payload, str):
payload = str(payload) # for Python-Future, so surrogateescape works
if utils._has_surrogates(payload):
bpayload = payload.encode('ascii', 'surrogateescape')
if not decode:
try:
payload = bpayload.decode(self.get_param('charset', 'ascii'), 'replace')
except LookupError:
payload = bpayload.decode('ascii', 'replace')
elif decode:
try:
bpayload = payload.encode('ascii')
except UnicodeError:
# This won't happen for RFC compliant messages (messages
# containing only ASCII codepoints in the unicode input).
# If it does happen, turn the string into bytes in a way
# guaranteed not to fail.
bpayload = payload.encode('raw-unicode-escape')
if not decode:
return payload
if cte == 'quoted-printable':
return utils._qdecode(bpayload)
elif cte == 'base64':
# XXX: this is a bit of a hack; decode_b should probably be factored
# out somewhere, but I haven't figured out where yet.
value, defects = decode_b(b''.join(bpayload.splitlines()))
for defect in defects:
self.policy.handle_defect(self, defect)
return value
elif cte in ('x-uuencode', 'uuencode', 'uue', 'x-uue'):
in_file = BytesIO(bpayload)
out_file = BytesIO()
try:
uu.decode(in_file, out_file, quiet=True)
return out_file.getvalue()
except uu.Error:
# Some decoding problem
return bpayload
if isinstance(payload, str):
return bpayload
return payload