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#!/usr/bin/env python3
import os
import sys
import argparse
import requests
from enum import Enum
import urllib.parse as urlparse
import logging
import tarfile
logger = logging.getLogger()
logger.setLevel(logging.INFO)
class EnumString(Enum):
def __str__(self: Enum) -> str:
return self.value
class CorpusType(EnumString):
NEWS = "news"
WIKI = "wikipedia"
class CorpusSize(EnumString):
SMALLEST = "10K"
SMALL = "30K"
MEDIUM = "100K"
LARGE = "300K"
LARGEST = "1M"
BASE_URL = "https://downloads.wortschatz-leipzig.de"
URL_PREFIX = "corpora"
FILE_TEMPLATE = "fra_{type}_{year}_{size}.tar.gz"
def main(args: argparse.Namespace) -> int:
if not os.path.exists(args.dst_dir):
logger.info(f"Invalid destination directory: '{args.dst_dir}'.")
return -1
filename = FILE_TEMPLATE.format(
type=args.type.value,
year=args.year,
size=args.size.value,
)
url = urlparse.urljoin(
BASE_URL,
f"{URL_PREFIX}/{filename}"
)
try:
file_path = os.path.join(args.dst_dir, filename)
logger.info("Downloading %s" % file_path)
with open(file_path, 'wb') as f:
response = requests.get(url, stream=True)
total_length = response.headers.get('content-length')
if total_length is None: # no content length header
f.write(response.content)
else:
dl = 0
total_length = int(total_length)
for data in response.iter_content(chunk_size=4096):
dl += len(data)
f.write(data)
done = int(50 * dl / total_length)
done_bar = '=' * done
remainder = ' ' * (50 - done)
done_pct = f"{100.0 * dl / total_length:6.2f}"
sys.stdout.write("\r[%s%s] [%s]" % (done_bar, remainder, done_pct))
sys.stdout.flush()
except Exception as error:
logger.error(error)
return -1
# Uncompress file
try:
logger.info("Extracting %s" % file_path)
with tarfile.open(file_path) as f:
f.extractall(os.path.dirname(file_path))
except Exception as error:
logger.error(error)
return -2
return 0
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"--type", '-t',
type=CorpusType,
choices=list(CorpusType)
)
parser.add_argument(
"--year", '-y',
type=str,
default='2023'
)
parser.add_argument(
"--size", '-s',
type=CorpusSize,
choices=list(CorpusSize)
)
parser.add_argument(
"--dst-dir", '-d',
type=str,
default='data'
)
args, _ = parser.parse_known_args()
sys.exit(
main(args)
)
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