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# Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. 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.
"""
This script can be used to preprocess Spoken Wikipedia corpus before running ctc-segmentation.
The input folder consists of subfolders with following stricture
├── <Name of Wikipedia article>
│ ├── aligned.swc
│ ├── audiometa.txt
│ ├── audio.ogg
│ ├── info.json
│ ├── wiki.html
│ ├── wiki.txt
│ └── wiki.xml
## The destination folder will contain look enumerated .ogg and .txt files like this:
├── audio
| ├── 1.ogg
| ├── 2.ogg
| ...
└── text
├── 1.txt
├── 2.txt
...
"""
import argparse
import os
import re
parser = argparse.ArgumentParser()
parser.add_argument(
"--input_folder", required=True, type=str, help="Input folder in which each subfolder contains an article"
)
parser.add_argument(
"--destination_folder", required=True, type=str, help="Destination folder with audio and text subfolder"
)
args = parser.parse_args()
def replace_diacritics(text):
text = re.sub(r"[éèëēêęěė]", "e", text)
text = re.sub(r"[ãâāáäăâàąåạả]", "a", text)
text = re.sub(r"[úūüùưûů]", "u", text)
text = re.sub(r"[ôōóöõòő]", "o", text)
text = re.sub(r"[ćçč]", "c", text)
text = re.sub(r"[ïīíîıì]", "i", text)
text = re.sub(r"[ñńňņ]", "n", text)
text = re.sub(r"[țť]", "t", text)
text = re.sub(r"[łľ]", "l", text)
text = re.sub(r"[żžź]", "z", text)
text = re.sub(r"[ğ]", "g", text)
text = re.sub(r"[ř]", "r", text)
text = re.sub(r"[ý]", "y", text)
text = re.sub(r"[æ]", "ae", text)
text = re.sub(r"[œ]", "oe", text)
text = re.sub(r"[șşšś]", "s", text)
return text
def get_audio(name, n):
"""
Copies .ogg file. If there are several .ogg files, concatenates them.
Args:
name - name of folder within Spoken Wikipedia
n - integer that will serve as output file name, e.g. if n=1, file 1.ogg will be created
"""
audio_path = os.path.join(args.input_folder, name, "audio.ogg")
if not os.path.exists(audio_path):
## Some folders have multiple .ogg files, so we need to first combine them into one file. Example:
## |── Universe
## │ ├── aligned.swc
## │ ├── audio1.ogg
## │ ├── audio2.ogg
## │ ├── audio3.ogg
## │ ├── audio4.ogg
## │ ├── audiometa.txt
## │ ├── info.json
## │ ├── wiki.html
## │ ├── wiki.txt
## │ └── wiki.xml
multiple_ogg_files = []
for i in range(1, 5):
path = os.path.join(args.input_folder, name, "audio" + str(i) + ".ogg")
if os.path.exists(path):
multiple_ogg_files.append(path)
else:
break
if len(multiple_ogg_files) == 0:
return
elif len(multiple_ogg_files) == 1:
os.system("cp \"" + multiple_ogg_files[0] + "\" \"" + audio_path + "\"")
else:
tmp_file_name = "ffmeg_inputs.txt"
print("tmp_file_name=", tmp_file_name)
with open(tmp_file_name, "w", encoding="utf-8") as tmp_file:
for path in multiple_ogg_files:
tmp_file.write("file '" + path + "'\n")
cmd = "ffmpeg -f concat -i \"" + tmp_file_name + "\" -c copy \"" + audio_path + "\""
print(cmd)
os.system(cmd)
output_audio_path = args.destination_folder + "/audio/" + str(n) + ".ogg"
os.system("cp \"" + audio_path + "\" " + output_audio_path)
def get_text(name, n):
"""
Cleans wiki.txt.
Args:
name - name of folder within Spoken Wikipedia
n - integer that will serve as output file name, e.g. if n=1, file 1.txt will be created
"""
# Then we need to clean the text
out_text = open(args.destination_folder + "/text/" + str(n) + ".txt", "w", encoding="utf-8")
with open(args.input_folder + "/" + name + "/wiki.txt", "r", encoding="utf-8") as f:
for line in f:
do_break = False
line2 = line.strip()
ref_parts = line2.split("<ref")
for idx, s in enumerate(ref_parts):
if idx != 0:
s = "<ref" + s
if s.startswith("[[Image") and s.endswith("]]"):
continue
if s.startswith("[[File") and s.endswith("]]"):
continue
if s.startswith(":"):
continue
if s.startswith("{|") or s.startswith("|}") or s.startswith("|") or s.startswith("!"):
continue
if s.startswith("{{") and (s.endswith("}}") or "}}" not in s):
continue
if s.startswith("{{pp-move"):
continue
s = re.sub(r"\[\[Image\:[^\]]+\]\]", r"", s)
s = re.sub(r"\[\[File\:[^\]]+\]\]", r"", s)
s = re.sub(r"\[http[^\]]+\]", r"", s)
s = re.sub(r"<math>[^<>]+</math>", r"", s)
s = re.sub(r"<!\-\-.+\-\->", r"", s) # <!--DashBot--> can be inside <ref>
s = re.sub(r"<ref>.+</ref>", r"", s)
s = re.sub(r"<ref .+</ref>", r"", s)
s = re.sub(r"<ref[^<>]+/>", r"", s)
s = re.sub(r"<[^ <>]+>", r"", s) # <sub>, <sup>, </u>
if (
re.match(r"== *Notes *==", s)
or re.match(r"== *References *==", s)
or re.match(r"== *External links *==", s)
or re.match(r"== *See also *==", s)
):
do_break = True
break
s = re.sub(r"{{convert\|(\d+)\|(\w+)\|[^}]+}}", r"\g<1> \g<2>", s) # {{convert|7600|lb|kg}}
s = re.sub(r"{{cquote\|", r"", s)
s = re.sub(r"{{[^{}]+}}", r"", s)
s = s.replace("{{", "").replace("}}", "")
s = re.sub(r"(lang[^()]+)", r"", s) # (lang-bn...)
s = re.sub(r"==+", r"", s)
s = re.sub(r"''+", r" ", s) # remove multiple quotes
s = re.sub(r" '", r" ", s) # remove quote at the beginning
s = re.sub(r"' ", r" ", s) # remove quote at the end
s = re.sub(r"[…\*]", r" ", s)
s = re.sub(r"\\u....", r" ", s) # remove unicode
s = re.sub(r"&[^ ;&]+;", r"", s) # —
s = replace_diacritics(s)
s = re.sub(r"\[\[[^\]]+\|([^\]]+)\]\]", r"\g<1>", s) # if several variants, take the last one
s = re.sub(r"\[\[([^\]]+)\]\]", r"\g<1>", s)
out_text.write(s + "\n")
if do_break:
break
out_text.close()
if __name__ == "__main__":
n = 0
for name in os.listdir(args.input_folder):
n += 1
if not os.path.exists(args.input_folder + "/" + name + "/wiki.txt"):
print("wiki.txt does not exist in " + name)
continue
get_audio(name, n)
get_text(name, n)
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