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# Copyright 2019 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Basic .ini encoding and decoding."""
import contextlib
import os
def loads(ini_str, strict=True):
ret = {}
for line in ini_str.splitlines():
key, val = line.split('=', 1)
key = key.strip()
val = val.strip()
if strict and key in ret:
raise ValueError('Multiple entries present for key "%s"' % key)
ret[key] = val
return ret
def load(fp):
return loads(fp.read())
def dumps(obj):
ret = ''
for k, v in sorted(obj.items()):
ret += '%s = %s\n' % (k, str(v))
return ret
def dump(obj, fp):
fp.write(dumps(obj))
@contextlib.contextmanager
def update_ini_file(ini_file_path):
"""Load and update the contents of an ini file.
Args:
ini_file_path: A string containing the absolute path of the ini file.
Yields:
The contents of the file, as a dict
"""
if os.path.exists(ini_file_path):
with open(ini_file_path) as ini_file:
ini_contents = load(ini_file)
else:
ini_contents = {}
yield ini_contents
with open(ini_file_path, 'w') as ini_file:
dump(ini_contents, ini_file)
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