Reimport bbl citations parsing and make some minor fixes
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125
libbmc/citations/bbl.py
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125
libbmc/citations/bbl.py
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@ -0,0 +1,125 @@
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"""
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This files contains all the functions to deal with .bbl files.
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"""
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import os
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import re
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import requests
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import subprocess
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from requests.exception import RequestException
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from libbmc import doi
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from libbmc import tools
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from libbmc.repositories import arxiv
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# Regex to match bibitems
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BIBITEMS_REGEX = re.compile(r"\\bibitem\{.+?\}")
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# Regex to match end of bibliography
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ENDTHEBIBLIOGRAPHY_REGEX = re.compile(r"\\end\{thebibliography}.*")
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# CrossRef API URL
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CROSSREF_LINKS_API_URL = "http://search.crossref.org/links"
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CROSSREF_MAX_BATCH_SIZE = 10
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def bibitem_as_plaintext(bibitem):
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"""
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Return a plaintext representation of the bibitem from the ``.bbl`` file.
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.. note::
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This plaintext representation can be super ugly, contain URLs and so \
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on.
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:param bibitem: The text content of the bibitem.
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:returns: A cleaned plaintext citation from the bibitem.
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"""
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try:
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output = subprocess.check_output(["delatex",
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"-s"],
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input=bibitem.encode("utf-8"))
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except FileNotFoundError:
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script_dir = os.path.dirname(os.path.abspath(__file__))
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output = subprocess.check_output(["%s/../external/opendetex/delatex" %
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(script_dir,),
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"-s"],
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input=bibitem.encode("utf-8"))
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output = output.decode("utf-8")
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output = tools.clean_whitespaces(output)
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return output
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def get_plaintext_citations(bbl):
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"""
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Parse a ``*.bbl`` file to get a clean list of plaintext citations.
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:param bbl: Either the path to the .bbl file or the content of a ``.bbl`` \
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file.
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:returns: A list of cleaned plaintext citations.
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"""
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# Handle path or content
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if os.path.isfile(bbl):
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with open(bbl, 'r') as fh:
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bbl_content = fh.read()
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else:
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bbl_content = bbl
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# Get a list of bibitems, taking the first item out as it is *before* the
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# first \bibitem
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bibitems = BIBITEMS_REGEX.split(bbl_content)[1:]
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# Delete the text after the \end{thebibliography}
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bibitems = [ENDTHEBIBLIOGRAPHY_REGEX.sub("", i).strip() for i in bibitems]
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# Clean every bibitem to have plaintext
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cleaned_bbl = [bibitem_as_plaintext(bibitem) for bibitem in bibitems]
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return cleaned_bbl
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def get_cited_DOIs(bbl):
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"""
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Get the DOIs of the papers cited in this .bbl file.
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:param bbl: Either the path to a .bbl file or the content of a .bbl file.
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:returns: A dict of cleaned plaintext citations and their associated DOI.
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"""
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dois = {}
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crossref_queue = []
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# Get the plaintext citations from the bbl file
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plaintext_citations = get_plaintext_citations(bbl)
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# Try to get the DOI directly from the citation
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for citation in plaintext_citations[:]:
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# Some citations already contain a DOI so try to match it directly
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matched_DOIs = doi.extract_from_text(citation)
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if matched_DOIs is not None:
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# Add the DOI and go on
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dois[citation] = matched_DOIs[0]
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continue
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# Same thing for arXiv id
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matched_arXiv = arxiv.extract_from_text(citation)
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if matched_arXiv is not None:
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# Add the associated DOI and go on
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dois[citation] = arxiv.to_DOI(matched_arXiv[0])
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continue
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# If no match found, stack it for next step
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# Note to remove URLs in the citation as the plaintext citations can
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# contain URLs and they are bad for the CrossRef API.
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crossref_queue.append(tools.remove_URLs(citation))
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# Do batch of papers, to prevent from the timeout of crossref
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for batch in tools.batch(crossref_queue, CROSSREF_MAX_BATCH_SIZE):
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try:
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# Fetch results from CrossRef
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r = requests.post(CROSSREF_LINKS_API_URL, json=batch)
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for result in r.json()["results"]:
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# Try to get a DOI
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try:
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dois[result["text"]] = result["doi"]
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except KeyError:
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# Or set it to None
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dois[result["text"]] = None
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except (RequestException, ValueError, KeyError):
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# If an exception occurred, set all the DOIs to None for the
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# current batch
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for i in batch:
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dois[i] = None
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return dois
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@ -4,14 +4,16 @@ This file contains all the DOI-related functions.
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import re
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import requests
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from requests.exception import RequestException
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from libbmc import tools
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# Taken from
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# https://stackoverflow.com/questions/27910/finding-a-doi-in-a-document-or-page/10324802#10324802
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regex = re.compile(r"\b(10[.][0-9]{4,}(?:[.][0-9]+)*/(?:(?![\"&\'<>])\S)+)\b",
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REGEX = re.compile(r"\b(10[.][0-9]{4,}(?:[.][0-9]+)*/(?:(?![\"&\'<>])\S)+)\b",
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re.IGNORECASE)
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# Base dx.doi.org URL for redirections
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dx_url = "http://dx.doi.org/{doi}"
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DX_URL = "http://dx.doi.org/{doi}"
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def is_valid(doi):
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@ -21,7 +23,7 @@ def is_valid(doi):
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:param doi: The DOI to be checked.
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:returns: Boolean indicating whether the DOI is valid or not.
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"""
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match = regex.match(doi)
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match = REGEX.match(doi)
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return ((match is not None) and (match.group(0) == doi))
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@ -32,7 +34,7 @@ def extract_from_text(text):
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:param text: The text to extract DOIs from.
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:returns: A list of found DOIs.
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"""
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return tools.remove_duplicates(regex.findall(text))
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return tools.remove_duplicates(REGEX.findall(text))
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def to_URL(dois):
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@ -43,9 +45,9 @@ def to_URL(dois):
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:returns: A list of DOIs URLs.
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"""
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if isinstance(dois, list):
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return [dx_url.format(doi=doi) for doi in dois]
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return [DX_URL.format(doi=doi) for doi in dois]
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else:
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return dx_url.format(doi=dois)
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return DX_URL.format(doi=dois)
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def to_canonical(urls):
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@ -73,13 +75,13 @@ def get_oa_version(doi):
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:returns: The URL of the OA version of the given DOI, or ``None``.
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"""
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# If DOI is a link, truncate it
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r = requests.get("http://beta.dissem.in/api/%s" % (doi,))
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try:
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assert(r.status_code == requests.codes.ok)
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r = requests.get("http://beta.dissem.in/api/%s" % (doi,))
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r.raise_for_status()
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result = r.json()
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assert(result["status"] == "ok")
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return result["paper"]["pdf_url"]
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except (AssertionError, ValueError, KeyError):
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except (AssertionError, ValueError, KeyError, RequestException):
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return None
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@ -90,8 +92,11 @@ def get_linked_version(doi):
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:param doi: A canonical DOI.
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:returns: The canonical URL behind the DOI, or ``None``.
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"""
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try:
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r = requests.head(to_URL(doi))
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return r.headers.get("location")
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except RequestException:
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return None
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def get_bibtex(doi):
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@ -105,9 +110,11 @@ def get_bibtex(doi):
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:param doi: The canonical DOI to get BibTeX from.
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:returns: A BibTeX string or ``None``.
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"""
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try:
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r = requests.get(to_URL(doi),
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headers={"accept": "application/x-bibtex"})
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if r.headers.get("content-type") == "application/x-bibtex":
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r.raise_for_status()
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assert(r.headers.get("content-type") == "application/x-bibtex")
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return r.text
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else:
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except (RequestException, AssertionError):
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return None
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@ -35,10 +35,10 @@ def get_bibtex(isbn):
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:param isbn: ISBN to fetch BibTeX entry for.
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:returns: A BibTeX string.
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"""
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return doi.get_bibtex(to_doi(isbn))
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return doi.get_bibtex(to_DOI(isbn))
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def to_doi(isbn):
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def to_DOI(isbn):
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"""
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Try to fetch a DOI from a given ISBN.
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@ -1,17 +1,23 @@
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"""
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This file contains all the arXiv-related functions.
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"""
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import arxiv2bib
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import io
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import re
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import requests
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import tarfile
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import xml.etree.ElementTree
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from urllib.error import HTTPError
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from requests.exception import RequestException
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from libbmc import tools
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from libbmc.citations import bbl
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arxiv_identifier_from_2007 = r"\d{4}\.\d{4,5}(v\d+)?"
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arxiv_identifier_before_2007 = r"(" + ("|".join([
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ARXIV_IDENTIFIER_FROM_2007 = r"\d{4}\.\d{4,5}(v\d+)?"
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ARXIV_IDENTIFIER_BEFORE_2007 = r"(" + ("|".join([
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"astro-ph.GA",
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"astro-ph.CO",
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"astro-ph.EP",
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@ -159,15 +165,15 @@ arxiv_identifier_before_2007 = r"(" + ("|".join([
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"stat.ME",
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"stat.OT",
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"stat.TH"])) + r")/\d+"
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regex = re.compile(
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"(" + arxiv_identifier_from_2007 + ")|(" +
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arxiv_identifier_before_2007 + ")",
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REGEX = re.compile(
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"(" + ARXIV_IDENTIFIER_FROM_2007 + ")|(" +
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ARXIV_IDENTIFIER_BEFORE_2007 + ")",
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re.IGNORECASE)
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# Base arXiv URL used as id sometimes
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arxiv_url = "http://arxiv.org/abs/{arxiv_id}"
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ARXIV_URL = "http://arxiv.org/abs/{arxiv_id}"
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# Eprint URL used to download sources
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arxiv_eprint_url = "http://arxiv.org/e-print/{arxiv_id}"
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ARXIV_EPRINT_URL = "http://arxiv.org/e-print/{arxiv_id}"
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def is_valid(arxiv_id):
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@ -177,15 +183,35 @@ def is_valid(arxiv_id):
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:param arxiv_id: The arXiv ID to be checked.
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:returns: Boolean indicating whether the arXiv ID is valid or not.
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"""
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match = regex.match(arxiv_id)
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match = REGEX.match(arxiv_id)
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return ((match is not None) and (match.group(0) == arxiv_id))
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def get_bibtex(arxiv_id):
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"""
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TODO
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Get a BibTeX entry for a given DOI.
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.. note::
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Using awesome https://pypi.python.org/pypi/arxiv2bib/ module.
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:param arxiv_id: The canonical arXiv id to get BibTeX from.
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:returns: A BibTeX string or ``None``.
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"""
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assert(False)
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# Fetch bibtex using arxiv2bib module
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try:
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bibtex = arxiv2bib.arxiv2bib([arxiv_id])
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except HTTPError:
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bibtex = []
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for bib in bibtex:
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if isinstance(bib, arxiv2bib.ReferenceErrorInfo):
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continue
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else:
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# Return fetched bibtex
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return bib.bibtex()
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# An error occurred, return None
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return None
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def extract_from_text(text):
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@ -195,7 +221,7 @@ def extract_from_text(text):
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:param text: The text to extract arXiv IDs from.
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:returns: A list of matching arXiv IDs.
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"""
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return tools.remove_duplicates(regex.findall(text))
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return tools.remove_duplicates(REGEX.findall(text))
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def to_URL(arxiv_ids):
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@ -206,9 +232,9 @@ def to_URL(arxiv_ids):
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:returns: A list of DOIs URLs.
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"""
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if isinstance(arxiv_ids, list):
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return [arxiv_url.format(arxiv_id=arxiv_id) for arxiv_id in arxiv_ids]
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return [ARXIV_URL.format(arxiv_id=arxiv_id) for arxiv_id in arxiv_ids]
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else:
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return arxiv_url.format(arxiv_id=arxiv_ids)
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return ARXIV_URL.format(arxiv_id=arxiv_ids)
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def to_canonical(urls):
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@ -236,11 +262,15 @@ def from_doi(doi):
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:param doi: The DOI of the resource to look for.
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:returns: The arXiv eprint id, or ``None`` if not found.
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"""
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try:
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r = requests.get("http://export.arxiv.org/api/query",
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params={
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"search_query": "doi:%s" % (doi,),
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"max_results": 1
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})
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r.raise_for_status()
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except RequestException:
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return None
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e = xml.etree.ElementTree.fromstring(r.content)
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for entry in e.iter("{http://www.w3.org/2005/Atom}entry"):
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id = entry.find("{http://www.w3.org/2005/Atom}id").text
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@ -250,7 +280,7 @@ def from_doi(doi):
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return None
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def to_doi(arxiv_id):
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def to_DOI(arxiv_id):
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"""
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Get the associated DOI for a given arXiv eprint.
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@ -262,11 +292,15 @@ def to_doi(arxiv_id):
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:param eprint: The arXiv eprint id.
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:returns: The DOI if any, or ``None``.
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"""
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try:
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r = requests.get("http://export.arxiv.org/api/query",
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params={
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"id_list": arxiv_id,
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"max_results": 1
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})
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r.raise_for_status()
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except RequestException:
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return None
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e = xml.etree.ElementTree.fromstring(r.content)
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for entry in e.iter("{http://www.w3.org/2005/Atom}entry"):
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doi = entry.find("{http://arxiv.org/schemas/atom}doi")
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@ -284,12 +318,12 @@ def get_sources(arxiv_id):
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:returns: A ``TarFile`` object of the sources of the arXiv preprint or \
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``None``.
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"""
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r = requests.get(arxiv_eprint_url.format(arxiv_id=arxiv_id))
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try:
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assert(r.status_code == requests.codes.ok)
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r = requests.get(ARXIV_EPRINT_URL.format(arxiv_id=arxiv_id))
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r.raise_for_status()
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file_object = io.BytesIO(r.content)
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return tarfile.open(fileobj=file_object)
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except (AssertionError, tarfile.TarError):
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except (RequestException, AssertionError, tarfile.TarError):
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return None
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@ -297,8 +331,8 @@ def get_bbl(arxiv_id):
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"""
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Get the .bbl files (if any) of a given preprint.
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:param eprint: The arXiv id (e.g. ``1401.2910`` or ``1401.2910v1``) in a \
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canonical form.
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:param arxiv_id: The arXiv id (e.g. ``1401.2910`` or ``1401.2910v1``) in \
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a canonical form.
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:returns: A list of the full text of the ``.bbl`` files (if any) \
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or ``None``.
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"""
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@ -311,6 +345,16 @@ def get_bbl(arxiv_id):
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def get_citations(arxiv_id):
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"""
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TODO
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Get the DOIs cited by a given preprint.
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:param arxiv_id: The arXiv id (e.g. ``1401.2910`` or ``1401.2910v1``) in \
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a canonical form.
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:returns: A dict of cleaned plaintext citations and their associated DOI.
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"""
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assert(False)
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dois = {}
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# Get the list of bbl files for this preprint
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bbl_files = get_bbl(arxiv_id)
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for bbl_file in bbl_files:
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# Fetch the cited DOIs for each of the bbl files
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dois.update(bbl.get_cited_DOIs(bbl_file))
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return dois
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1
libbmc/repositories/hal.py
Normal file
1
libbmc/repositories/hal.py
Normal file
@ -0,0 +1 @@
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# TODO
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@ -1,6 +1,12 @@
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"""
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This file contains various utility functions.
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"""
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import re
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from itertools import islice, chain
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# Huge URL regex taken from https://gist.github.com/gruber/8891611
|
||||
URL_REGEX = re.compile(r"(?i)\b((?:https?:(?:/{1,3}|[a-z0-9%])|[a-z0-9.\-]+[.](?:com|net|org|edu|gov|mil|aero|asia|biz|cat|coop|info|int|jobs|mobi|museum|name|post|pro|tel|travel|xxx|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|Ja|sk|sl|sm|sn|so|sr|ss|st|su|sv|sx|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)/)(?:[^\s()<>{}\[\]]+|\([^\s()]*?\([^\s()]+\)[^\s()]*?\)|\([^\s]+?\))+(?:\([^\s()]*?\([^\s()]+\)[^\s()]*?\)|\([^\s]+?\)|[^\s`!()\[\]{};:'\".,<>?«»“”‘’])|(?:(?<!@)[a-z0-9]+(?:[.\-][a-z0-9]+)*[.](?:com|net|org|edu|gov|mil|aero|asia|biz|cat|coop|info|int|jobs|mobi|museum|name|post|pro|tel|travel|xxx|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|ax|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|dd|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|me|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|rs|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|Ja|sk|sl|sm|sn|so|sr|ss|st|su|sv|sx|sy|sz|tc|td|tf|tg|th|tj|tk|tl|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)\b/?(?!@)))")
|
||||
|
||||
|
||||
def replaceAll(text, replace_dict):
|
||||
@ -19,7 +25,8 @@ def replaceAll(text, replace_dict):
|
||||
|
||||
def clean_whitespaces(text):
|
||||
"""
|
||||
Remove multiple whitespaces from text.
|
||||
Remove multiple whitespaces from text. Also removes leading and trailing \
|
||||
whitespaces.
|
||||
|
||||
:param text: Text to remove multiple whitespaces from.
|
||||
:returns: A cleaned text.
|
||||
@ -35,3 +42,38 @@ def remove_duplicates(some_list):
|
||||
:returns: A list without duplicates.
|
||||
"""
|
||||
return list(set(some_list))
|
||||
|
||||
|
||||
def batch(iterable, size):
|
||||
"""
|
||||
Get items from a sequence a batch at a time.
|
||||
|
||||
.. note:
|
||||
|
||||
Adapted from
|
||||
https://code.activestate.com/recipes/303279-getting-items-in-batches/.
|
||||
|
||||
|
||||
.. note:
|
||||
|
||||
All batches must be exhausted immediately.
|
||||
|
||||
:params iterable: An iterable to get batches from.
|
||||
:params size: Size of the batches.
|
||||
:returns: A new batch of the given size at each time.
|
||||
"""
|
||||
it = iter(iterable)
|
||||
while True:
|
||||
bi = islice(it, size)
|
||||
yield chain([bi.next()], bi)
|
||||
|
||||
|
||||
def remove_URLs(text):
|
||||
"""
|
||||
Remove URLs from a given text (only removes http, https and naked domains \
|
||||
URLs).
|
||||
|
||||
:param text: The text to remove URLs from.
|
||||
:returns: The text without URLs.
|
||||
"""
|
||||
return clean_whitespaces(URL_REGEX.sub("", text))
|
||||
|
||||
@ -1,2 +1,3 @@
|
||||
isbnlib==3.5.7
|
||||
requests==2.9.1
|
||||
arxiv2bib>=1.0.7
|
||||
isbnlib>=3.5.7
|
||||
requests>=2.9.1
|
||||
|
||||
Loading…
Reference in New Issue
Block a user