66 lines
2.1 KiB
Python
Executable File
66 lines
2.1 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Qutebrowser userscript scraping the current web page for DOIs and downloading
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corresponding bibtex information.
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Set the environment variable 'QUTE_BIB_FILEPATH' to indicate the path to
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download to. Otherwise, bibtex information is downloaded to '/tmp' and hence
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deleted at reboot.
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Installation: see qute://help/userscripts.html
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Inspired by
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https://ocefpaf.github.io/python4oceanographers/blog/2014/05/19/doi2bibtex/
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"""
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import os
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import sys
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import re
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from collections import Counter
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from urllib import parse as url_parse
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from urllib import request as url_request
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FIFO_PATH = os.getenv("QUTE_FIFO")
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def message_fifo(message, level="warning"):
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"""Send message to qutebrowser FIFO. The level must be one of 'info',
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'warning' (default) or 'error'."""
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with open(FIFO_PATH, "w") as fifo:
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fifo.write("message-{} '{}'".format(level, message))
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source = os.getenv("QUTE_TEXT")
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with open(source) as f:
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text = f.read()
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# find DOIs on page using regex
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dval = re.compile(r'(10\.(\d)+/([^(\s\>\"\<)])+)')
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# https://stackoverflow.com/a/10324802/3865876, too strict
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# dval = re.compile(r'\b(10[.][0-9]{4,}(?:[.][0-9]+)*/(?:(?!["&\'<>])\S)+)\b')
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dois = dval.findall(text)
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dois = Counter(e[0] for e in dois)
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try:
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doi = dois.most_common(1)[0][0]
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except IndexError:
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message_fifo("No DOIs found on page")
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sys.exit()
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message_fifo("Found {} DOIs on page, selecting {}".format(len(dois), doi),
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level="info")
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# get bibtex data corresponding to DOI
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url = "https://dx.doi.org/" + url_parse.quote(doi)
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headers = dict(Accept='text/bibliography; style=bibtex')
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request = url_request.Request(url, headers=headers)
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response = url_request.urlopen(request)
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status_code = response.getcode()
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if status_code >= 400:
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message_fifo("Request returned {}".format(status_code))
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sys.exit()
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# obtain content and format it
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bibtex = response.read().decode("utf-8").strip()
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bibtex = bibtex.replace(" ", "\n ", 1).\
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replace("}, ", "},\n ").replace("}}", "}\n}")
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# append to file
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bib_filepath = os.getenv("QUTE_BIB_FILEPATH", "/tmp/qute.bib")
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with open(bib_filepath, "a") as f:
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f.write(bibtex + "\n\n")
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