initialHEADmaster

1 files changed, 65 insertions, 0 deletions

diff --git a/main.py b/main.py
new file mode 100755
index 0000000..0921d76
--- /dev/null
+++ b/main.py
@@ -0,0 +1,65 @@
+#!/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()