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github.com_openSUSE_osc/osc/util/helper.py
Marcus Huewe d85030b72d Fix python2 regression in util.helper.decode_it
In commit 276d6e2439 ("Do not use the
chardet module in util.helper.decode_it") util.helper.decode_it was
changed to always decode the passed object if it has a decode method.
Since a python2 str has a decode method, the new code tries to utf-8
decode the passed str. As a result, a unicode object is returned (if
the decoding worked). Since a unicode object is not an instance of
type str, all subsequent isinstance(decoded_obj, str) checks evaluate
to False, which break some codepaths.
In order to fix this, restore the old python2 behavior (that is, if
the passed object is a str, it is not decode it). This change does not
affect the python3 codepaths.

Fixes: #814 ("osc log | fails")
2020-06-25 15:38:14 +02:00

92 lines
2.2 KiB
Python

# Copyright (C) 2018 SUSE Linux. All rights reserved.
# This program is free software; it may be used, copied, modified
# and distributed under the terms of the GNU General Public Licence,
# either version 2, or (at your option) any later version.
try:
import html
except ImportError:
import cgi as html
from osc import oscerr
def cmp_to_key(mycmp):
""" Converts a cmp= function into a key= function.
"""
class K(object):
def __init__(self, obj, *args):
self.obj = obj
def __lt__(self, other):
return mycmp(self.obj, other.obj) < 0
def __gt__(self, other):
return mycmp(self.obj, other.obj) > 0
def __eq__(self, other):
return mycmp(self.obj, other.obj) == 0
def __le__(self, other):
return mycmp(self.obj, other.obj) <= 0
def __ge__(self, other):
return mycmp(self.obj, other.obj) >= 0
def __ne__(self, other):
return mycmp(self.obj, other.obj) != 0
def __hash__(self):
raise TypeError('hash not implemented')
return K
def decode_list(ilist):
""" Decodes the elements of a list if needed
"""
dlist = []
for elem in ilist:
if not isinstance(elem, str):
dlist.append(decode_it(elem))
else:
dlist.append(elem)
return dlist
def decode_it(obj):
"""Decode the given object unless it is a str.
If the given object is a str or has no decode method, the object itself is
returned. Otherwise, try to decode the object using utf-8. If this
fails due to a UnicodeDecodeError, try to decode the object using
latin-1.
"""
if isinstance(obj, str) or not hasattr(obj, 'decode'):
return obj
try:
return obj.decode('utf-8')
except UnicodeDecodeError:
return obj.decode('latin-1')
def raw_input(*args):
try:
import builtins
func = builtins.input
except ImportError:
#python 2.7
import __builtin__
func = __builtin__.raw_input
try:
return func(*args)
except EOFError:
# interpret ctrl-d as user abort
raise oscerr.UserAbort()
def _html_escape(data):
return html.escape(data, quote=False)