# Copyright (c) 2019 NVIDIA CORPORATION. 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.

import glob
import os

class BookscorpusTextFormatting:
    def __init__(self, books_path, output_filename, recursive = False):
        self.books_path = books_path
        self.recursive = recursive
        self.output_filename = output_filename


    # This puts one book per line
    def merge(self):
        with open(self.output_filename, mode='w', newline='\n') as ofile:
            for filename in glob.glob(self.books_path + '/' + '*.txt', recursive=True):
                with open(filename, mode='r', encoding='utf-8-sig', newline='\n') as file:
                    for line in file:
                        if line.strip() != '':
                            try:
                                ofile.write(line.strip() + ' ')
                            except:
                                pass
                ofile.write("\n\n")
