# Copyright 2019-2022 The ASReview Authors. All Rights Reserved.
#
# 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.
__all__ = ["CSVReader"]
import pandas as pd
from asreview.io.utils import _standardize_dataframe
[docs]
class CSVReader:
"""CVS file reader."""
read_format = [".csv", ".tab", ".tsv"]
write_format = [".csv", ".tsv", ".xlsx"]
[docs]
@classmethod
def read_data(cls, fp):
"""Import dataset.
Arguments
---------
fp: str, pathlib.Path
File path to the CSV file.
Returns
-------
list:
List with entries.
"""
for encoding in ["utf-8", "ISO-8859-1"]:
try:
df = pd.read_csv(fp, sep=None, encoding=encoding, engine="python")
return _standardize_dataframe(df)
except UnicodeDecodeError:
# if unicode error, go to next encoding
continue
raise UnicodeDecodeError("The encoding of the file is not supported.")