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# Copyright 2016-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
__all__ = [
"ConfigParserError",
"NoOptionError",
"ParsingError",
"RawConfigParser",
"SafeConfigParser",
"read_configs",
]
# the following scary compatibility thing provides two classes:
# - SafeConfigParser that provides safe interpolation for values,
# - RawConfigParser that provides no interpolation for values.
import io
from configparser import (
Error as ConfigParserError,
NoOptionError,
ParsingError,
RawConfigParser,
)
from configparser import ConfigParser as SafeConfigParser
from portage import _encodings
from portage import _unicode_encode
def read_configs(parser, paths):
"""
Read configuration files from given paths into the specified
ConfigParser, handling path encoding portably.
@param parser: target *ConfigParser instance
@type parser: SafeConfigParser or RawConfigParser
@param paths: list of paths to read
@type paths: iterable
"""
# use read_file/readfp in order to control decoding of unicode
try:
# Python >=3.2
read_file = parser.read_file
source_kwarg = "source"
except AttributeError:
read_file = parser.readfp
source_kwarg = "filename"
for p in paths:
if isinstance(p, str):
f = None
try:
f = io.open(
_unicode_encode(p, encoding=_encodings["fs"], errors="strict"),
mode="r",
encoding=_encodings["repo.content"],
errors="replace",
)
except EnvironmentError:
pass
else:
# The 'source' keyword argument is needed since otherwise
# ConfigParser in Python <3.3.3 may throw a TypeError
# because it assumes that f.name is a native string rather
# than binary when constructing error messages.
kwargs = {source_kwarg: p}
read_file(f, **kwargs)
finally:
if f is not None:
f.close()
elif isinstance(p, io.StringIO):
kwargs = {source_kwarg: "<io.StringIO>"}
read_file(p, **kwargs)
else:
raise TypeError(
"Unsupported type %r of element %r of 'paths' argument" % (type(p), p)
)
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