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#!/usr/bin/env python3
import requests
import os
from bs4 import BeautifulSoup
from argparse import ArgumentParser
class DVIDSParser:
def __init__(self, url, output):
self._url = url
self._output = output
def go(self):
years = self.get_years()
for y in years:
pages = self.get_pages_count(y)
for page in range(pages):
url = f'{self._url}?issueYearDropDown={y}&sortOptions=DESC&page={page+1}'
r = requests.get(url)
html = BeautifulSoup(r.text, 'html.parser')
for pub in html.select('.publication-item'):
title = pub.select_one('div:not(.uk-row) > p:not(.issue-downloads):not(.issue-hits)').text.strip()
pdf_id = os.path.basename(pub.select_one('a')['href'])
pdf_url = f'https://media-cdn.dvidshub.net/pubs/pdf_{pdf_id}.pdf'
filename = f'{title} ({pdf_id}).pdf'
self.save(pdf_url, filename)
print(f'[{y}/{page}/{pdf_id}] {title} OK')
def get_pages_count(self, year: int) -> int:
url = f'{self._url}/page/999/?issueYearDropDown={year}&sortOptions=DESC'
r = requests.get(url)
html = BeautifulSoup(r.text, 'html.parser')
return int(html.select_one('li.uk-active > span').text)
def get_years(self) -> list[int]:
r = requests.get(self._url)
html = BeautifulSoup(r.text, 'html.parser')
return list(map(lambda opt: int(opt['value']), html.select_one('#issueYearDropDown').select('option')))
def save(self, url, filename):
streamed_response = requests.get(url, stream=True)
with open(os.path.join(self._output, filename), 'wb') as file:
for chunk in streamed_response.iter_content(chunk_size=1024):
if chunk: # filter out keep-alive new chunks
file.write(chunk)
if __name__ == '__main__':
parser = ArgumentParser()
parser.add_argument('--collection-url', type=str, required=True)
# parser.add_argument('--pages', type=int, default=1)
parser.add_argument('--output-directory', type=str, required=True,
help='Directory where to save files. If does not exist, it will be created')
args = parser.parse_args()
if os.path.exists(args.output_directory) and not os.path.isdir(args.output_directory):
raise OSError('specified path is not a directory')
elif not os.path.exists(args.output_directory):
os.makedirs(args.output_directory)
p = DVIDSParser(url=args.collection_url,
output=args.output_directory)
p.go()
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