diff options
Diffstat (limited to 'synapse/types.py')
| -rw-r--r-- | synapse/types.py | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/synapse/types.py b/synapse/types.py index 42aeaf6270..74a2c51857 100644 --- a/synapse/types.py +++ b/synapse/types.py @@ -21,6 +21,7 @@ from typing import ( ClassVar, Dict, Mapping, + Match, MutableMapping, Optional, Tuple, @@ -380,7 +381,7 @@ def map_username_to_mxid_localpart( onto different mxids Returns: - unicode: string suitable for a mxid localpart + string suitable for a mxid localpart """ if not isinstance(username, bytes): username = username.encode("utf-8") @@ -388,29 +389,23 @@ def map_username_to_mxid_localpart( # first we sort out upper-case characters if case_sensitive: - def f1(m): + def f1(m: Match[bytes]) -> bytes: return b"_" + m.group().lower() username = UPPER_CASE_PATTERN.sub(f1, username) else: username = username.lower() - # then we sort out non-ascii characters - def f2(m): - g = m.group()[0] - if isinstance(g, str): - # on python 2, we need to do a ord(). On python 3, the - # byte itself will do. - g = ord(g) - return b"=%02x" % (g,) + # then we sort out non-ascii characters by converting to the hex equivalent. + def f2(m: Match[bytes]) -> bytes: + return b"=%02x" % (m.group()[0],) username = NON_MXID_CHARACTER_PATTERN.sub(f2, username) # we also do the =-escaping to mxids starting with an underscore. username = re.sub(b"^_", b"=5f", username) - # we should now only have ascii bytes left, so can decode back to a - # unicode. + # we should now only have ascii bytes left, so can decode back to a string. return username.decode("ascii") |