/usr/share/pyshared/keyring/util/escape.py is in python-keyring 0.9.2-0ubuntu0.12.04.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | """
escape/unescape routines available for backends which need
alphanumeric usernames, services, or other values
"""
import string
import re
import sys
LEGAL_CHARS = (
getattr(string, 'letters', None) # Python 2
or getattr(string, 'ascii_letters') # Python 3
) + string.digits
ESCAPE_FMT = "_%02X"
def _escape_char(c):
"Single char escape. Return the char, escaped if not already legal"
if isinstance(c, int):
c = unichr(c)
return c if c in LEGAL_CHARS else ESCAPE_FMT % ord(c)
def escape(value):
"""
Escapes given string so the result consists of alphanumeric chars and
underscore only.
"""
return "".join(_escape_char(c) for c in value.encode('utf-8'))
def _unescape_code(regex_match):
ordinal = int(regex_match.group('code'), 16)
if sys.version_info >= (3,):
return bytes([ordinal])
return chr(ordinal)
def unescape(value):
"""
Inverse of escape.
"""
re_esc = re.compile(
# the pattern must be bytes to operate on bytes
ESCAPE_FMT.replace('%02X', '(?P<code>[0-9A-F]{2})').encode('ascii')
)
return re_esc.sub(_unescape_code, value.encode('ascii')).decode('utf-8')
|