# Copyright 2008-2015 Nokia Networks
# Copyright 2016- Robot Framework Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from codecs import BOM_UTF8
from .robottypes import is_string
[docs]class Utf8Reader(object):
def __init__(self, path_or_file):
if is_string(path_or_file):
self._file = open(path_or_file, 'rb')
self._close = True
else:
self._file = path_or_file
self._close = False
# IronPython handles BOM incorrectly if file not opened in binary mode:
# https://ironpython.codeplex.com/workitem/34655
if hasattr(self._file, 'mode') and self._file.mode != 'rb':
raise ValueError('Only files in binary mode accepted.')
def __enter__(self):
return self
def __exit__(self, *exc_info):
if self._close:
self._file.close()
[docs] def read(self):
return self._decode(self._file.read())
[docs] def readlines(self):
for index, line in enumerate(self._file.readlines()):
yield self._decode(line, remove_bom=index == 0)
def _decode(self, content, remove_bom=True):
if remove_bom and content.startswith(BOM_UTF8):
content = content[len(BOM_UTF8):]
return content.decode('UTF-8')