mirror of
https://github.com/Garmelon/PFERD.git
synced 2023-12-21 10:23:01 +01:00
112 lines
3.3 KiB
Python
112 lines
3.3 KiB
Python
# Fakultät für Mathematik (FfM)
|
|
|
|
import getpass
|
|
import logging
|
|
import pathlib
|
|
import re
|
|
|
|
import bs4
|
|
import requests
|
|
|
|
from .organizer import Organizer
|
|
from .utils import stream_to_path, PrettyLogger
|
|
|
|
__all__ = ["Ti"]
|
|
logger = logging.getLogger(__name__)
|
|
pretty = PrettyLogger(logger)
|
|
|
|
class Ti:
|
|
BASE_URL = "http://ti.ira.uka.de/"
|
|
FILE_RE = re.compile(r"^.+\.pdf$")
|
|
|
|
def __init__(self, base_path):
|
|
self.base_path = base_path
|
|
|
|
self._session = requests.Session()
|
|
self._credentials = None
|
|
|
|
def synchronize(self, urlpart, to_dir, transform=lambda x: x,
|
|
filter=lambda x: True):
|
|
pretty.starting_synchronizer(to_dir, "Ti", urlpart)
|
|
|
|
sync_path = pathlib.Path(self.base_path, to_dir)
|
|
|
|
orga = Organizer(self.base_path, sync_path)
|
|
orga.clean_temp_dir()
|
|
|
|
self._reset_credentials()
|
|
|
|
available = self._find_available(urlpart)
|
|
|
|
for name, address in sorted(available.items()):
|
|
path = pathlib.PurePath(name)
|
|
if filter(path):
|
|
self._crawl(urlpart + address, path, orga, transform)
|
|
else:
|
|
loggwe.info(f"Skipping {name}/")
|
|
|
|
orga.clean_sync_dir()
|
|
orga.clean_temp_dir()
|
|
|
|
self._reset_credentials()
|
|
|
|
def _find_available(self, urlpart):
|
|
url = self.BASE_URL + urlpart
|
|
r = self._session.get(url)
|
|
soup = bs4.BeautifulSoup(r.text, "html.parser")
|
|
|
|
available = {}
|
|
|
|
if soup.find(href="./Vorlesung/Vorlesung.php"):
|
|
logger.info("Found Folien/")
|
|
available["Folien"] = "/Vorlesung/"
|
|
if soup.find(href="./Uebungen/Uebungen.php"):
|
|
logger.info("Found Blätter/")
|
|
available["Blätter"] = "/Uebungen/"
|
|
if soup.find(href="./Tutorien/Tutorien.php"):
|
|
logger.info("Found Tutorien/")
|
|
available["Tutorien"] = "/Tutorien/"
|
|
|
|
return available
|
|
|
|
def _crawl(self, urlpart, path, orga, transform):
|
|
url = self.BASE_URL + urlpart
|
|
r = self._session.get(url)
|
|
soup = bs4.BeautifulSoup(r.text, "html.parser")
|
|
|
|
for filelink in soup.find_all("a", href=self.FILE_RE):
|
|
filepath = path / filelink["href"]
|
|
fileurl = url + "/" + filelink["href"]
|
|
|
|
new_path = transform(filepath)
|
|
if new_path is None:
|
|
continue
|
|
logger.debug(f"Transformed from {filepath} to {new_path}")
|
|
|
|
temp_path = orga.temp_file()
|
|
self._download(fileurl, temp_path)
|
|
orga.add_file(temp_path, new_path)
|
|
|
|
|
|
def _get_credentials(self):
|
|
if self._credentials is None:
|
|
print("Please enter Ti credentials.")
|
|
username = getpass.getpass(prompt="Username: ")
|
|
password = getpass.getpass(prompt="Password: ")
|
|
self._credentials = (username, password)
|
|
return self._credentials
|
|
|
|
def _reset_credentials(self):
|
|
self._credentials = None
|
|
|
|
def _download(self, url, to_path):
|
|
while True:
|
|
username, password = self._get_credentials()
|
|
with self._session.get(url, stream=True, auth=(username, password)) as r:
|
|
if r.ok:
|
|
stream_to_path(r, to_path)
|
|
return
|
|
else:
|
|
print("Incorrect credentials.")
|
|
self._reset_credentials()
|