Delete arxiv2bib from the repo
This commit is contained in:
Phyks
parent
6be5cb3f16
commit
d4286ea5de
@ -56,9 +56,9 @@ Should be almost working and usable now, although still to be considered as **ex
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```
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git clone https://github.com/Phyks/BMC
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```
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* Install `requesocks`, `bibtexparser` (https://github.com/sciunto/python-bibtexparser), `PyPDF2` and `isbntools` _via_ Pypi
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* Install `arxiv2bib`, `requesocks`, `bibtexparser` (https://github.com/sciunto/python-bibtexparser), `PyPDF2` and `isbntools` _via_ Pypi
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```
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sudo pip install requesocks bibtexparser pyPDF2 isbntools
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sudo pip install arxiv2bib requesocks bibtexparser pyPDF2 isbntools
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```
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(replace pip by pip2 if your distribution ships python3 by default)
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* Install `pdftotext` (provided by Xpdf) and `djvulibre` _via_ your package manager or the way you want
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411
arxiv2bib.py
411
arxiv2bib.py
@ -1,411 +0,0 @@
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#! /usr/bin/env python
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#
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# Copyright (c) 2012, Nathan Grigg
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of this package nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# This software is provided by the copyright holders and contributors "as
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# is" and any express or implied warranties, including, but not limited
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# to, the implied warranties of merchantability and fitness for a
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# particular purpose are disclaimed. In no event shall Nathan Grigg be
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# liable for any direct, indirect, incidental, special, exemplary, or
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# consequential damages (including, but not limited to, procurement of
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# substitute goods or services; loss of use, data, or profits; or business
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# interruption) however caused and on any theory of liability, whether in
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# contract, strict liability, or tort (including negligence or otherwise)
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# arising in any way out of the use of this software, even if advised of
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# the possibility of such damage.
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#
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# (also known as the New BSD License)
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#
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# Indiscriminate automated downloads from arXiv.org are not permitted.
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# For more information, see http://arxiv.org/help/robots
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#
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# This script usually makes only one call to arxiv.org per run.
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# No caching of any kind is performed.
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from __future__ import print_function
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from xml.etree import ElementTree
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import sys
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import re
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import os
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if sys.version_info < (2, 6):
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raise Exception("Python 2.6 or higher required")
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# Python 2 compatibility code
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PY2 = sys.version_info[0] == 2
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if not PY2:
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from urllib.parse import urlencode
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from urllib.request import urlopen
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from urllib.error import HTTPError
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print_bytes = lambda s: sys.stdout.buffer.write(s)
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else:
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from urllib import urlencode
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from urllib2 import HTTPError, urlopen
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print_bytes = lambda s: sys.stdout.write(s)
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# Namespaces
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ATOM = '{http://www.w3.org/2005/Atom}'
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ARXIV = '{http://arxiv.org/schemas/atom}'
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# regular expressions to check if arxiv id is valid
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NEW_STYLE = re.compile(r'^\d{4}\.\d{4}(v\d+)?$')
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OLD_STYLE = re.compile(r"""(?x)
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^(
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math-ph
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|hep-ph
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|nucl-ex
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|nucl-th
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|gr-qc
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|astro-ph
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|hep-lat
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|quant-ph
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|hep-ex
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|hep-th
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|stat
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(\.(AP|CO|ML|ME|TH))?
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|q-bio
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(\.(BM|CB|GN|MN|NC|OT|PE|QM|SC|TO))?
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|cond-mat
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(\.(dis-nn|mes-hall|mtrl-sci|other|soft|stat-mech|str-el|supr-con))?
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|cs
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(\.(AR|AI|CL|CC|CE|CG|GT|CV|CY|CR|DS|DB|DL|DM|DC|GL|GR|HC|IR|IT|LG|LO|
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MS|MA|MM|NI|NE|NA|OS|OH|PF|PL|RO|SE|SD|SC))?
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|nlin
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(\.(AO|CG|CD|SI|PS))?
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|physics
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(\.(acc-ph|ao-ph|atom-ph|atm-clus|bio-ph|chem-ph|class-ph|comp-ph|
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data-an|flu-dyn|gen-ph|geo-ph|hist-ph|ins-det|med-ph|optics|ed-ph|
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soc-ph|plasm-ph|pop-ph|space-ph))?
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|math
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(\.(AG|AT|AP|CT|CA|CO|AC|CV|DG|DS|FA|GM|GN|GT|GR|HO|IT|KT|LO|MP|MG
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|NT|NA|OA|OC|PR|QA|RT|RA|SP|ST|SG))?
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)/\d{7}(v\d+)?$""")
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def is_valid(arxiv_id):
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"""Checks if id resembles a valid arxiv identifier."""
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return bool(NEW_STYLE.match(arxiv_id)) or bool(OLD_STYLE.match(arxiv_id))
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class FatalError(Exception):
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"""Error that prevents us from continuing"""
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class NotFoundError(Exception):
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"""Reference not found by the arxiv API"""
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class Reference(object):
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"""Represents a single reference.
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Instantiate using Reference(entry_xml). Note entry_xml should be
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an ElementTree.Element object.
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"""
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def __init__(self, entry_xml):
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self.xml = entry_xml
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self.url = self._field_text('id')
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self.id = self._id()
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self.authors = self._authors()
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self.title = self._field_text('title')
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if len(self.id) == 0 or len(self.authors) == 0 or len(self.title) == 0:
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raise NotFoundError("No such publication", self.id)
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self.summary = self._field_text('summary')
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self.category = self._category()
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self.year, self.month = self._published()
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self.updated = self._field_text('updated')
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self.bare_id = self.id[:self.id.rfind('v')]
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self.note = self._field_text('journal_ref', namespace=ARXIV)
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def _authors(self):
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"""Extracts author names from xml."""
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xml_list = self.xml.findall(ATOM + 'author/' + ATOM + 'name')
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return [field.text for field in xml_list]
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def _field_text(self, id, namespace=ATOM):
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"""Extracts text from arbitrary xml field"""
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try:
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return self.xml.find(namespace + id).text.strip()
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except:
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return ""
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def _category(self):
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"""Get category"""
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try:
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return self.xml.find(ARXIV + 'primary_category').attrib['term']
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except:
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return ""
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def _id(self):
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"""Get arxiv id"""
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try:
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id_url = self._field_text('id')
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return id_url[id_url.find('/abs/') + 5:]
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except:
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return ""
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def _published(self):
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"""Get published date"""
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published = self._field_text('published')
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if len(published) < 7:
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return "", ""
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y, m = published[:4], published[5:7]
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try:
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m = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
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"Aug", "Sep", "Nov", "Dec"][int(m) - 1]
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except:
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pass
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return y, m
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def bibtex(self):
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"""BibTex string of the reference."""
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lines = ["@article{" + self.id]
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for k, v in [("Author", " and ".join(self.authors)),
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("Title", self.title),
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("Eprint", self.id),
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("ArchivePrefix", "arXiv"),
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("PrimaryClass", self.category),
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("Abstract", self.summary),
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("Year", self.year),
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("Month", self.month),
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("Note", self.note),
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("Url", self.url),
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("File", self.id + ".pdf")]:
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if len(v):
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lines.append("%-13s = {%s}" % (k, v))
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return ("," + os.linesep).join(lines) + os.linesep + "}"
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class ReferenceErrorInfo(object):
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"""Contains information about a reference error"""
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def __init__(self, message, id):
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self.message = message
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self.id = id
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self.bare_id = id[:id.rfind('v')]
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# mark it as really old, so it gets superseded if possible
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self.updated = '0'
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def bibtex(self):
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"""BibTeX comment explaining error"""
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return ("@comment{%(id)s: %(message)s}" %
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{'id': self.id, 'message': self.message})
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def __str__(self):
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return ("Error: %(message)s (%(id)s)" %
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{'id': self.id, 'message': self.message})
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def arxiv2bib(id_list):
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"""Returns a list of references, corresponding to elts of id_list"""
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d = arxiv2bib_dict(id_list)
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l = []
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for id in id_list:
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try:
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l.append(d[id])
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except:
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l.append(ReferenceErrorInfo("Not found", id))
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return l
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def arxiv_request(ids):
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"""Sends a request to the arxiv API."""
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q = urlencode([
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("id_list", ",".join(ids)),
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("max_results", len(ids))
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])
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xml = urlopen("http://export.arxiv.org/api/query?" + q)
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# xml.read() returns bytes, but ElementTree.fromstring decodes
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# to unicode when needed (python2) or string (python3)
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return ElementTree.fromstring(xml.read())
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def arxiv2bib_dict(id_list):
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"""Fetches citations for ids in id_list into a dictionary indexed by id"""
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ids = []
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d = {}
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# validate ids
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for id in id_list:
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if is_valid(id):
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ids.append(id)
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else:
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d[id] = ReferenceErrorInfo("Invalid arXiv identifier", id)
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if len(ids) == 0:
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return d
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# make the api call
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while True:
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xml = arxiv_request(ids)
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# check for error
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entries = xml.findall(ATOM + "entry")
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try:
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first_title = entries[0].find(ATOM + "title")
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except:
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raise FatalError("Unable to connect to arXiv.org API.")
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if first_title is None or first_title.text.strip() != "Error":
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break
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try:
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id = entries[0].find(ATOM + "summary").text.split()[-1]
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del(ids[ids.index(id)])
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except:
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raise FatalError("Unable to parse an error returned by arXiv.org.")
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# Parse each reference and store it in dictionary
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for entry in entries:
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try:
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ref = Reference(entry)
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except NotFoundError as error:
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message, id = error.args
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ref = ReferenceErrorInfo(message, id)
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if ref.id:
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d[ref.id] = ref
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if ref.bare_id:
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if not (ref.bare_id in d) or d[ref.bare_id].updated < ref.updated:
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d[ref.bare_id] = ref
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return d
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class Cli(object):
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"""Command line interface"""
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def __init__(self, args=None):
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"""Parse arguments"""
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self.args = self.parse_args(args)
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if len(self.args.id) == 0:
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self.args.id = [line.strip() for line in sys.stdin]
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# avoid duplicate error messages unless verbose is set
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if self.args.comments and not self.args.verbose:
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self.args.quiet = True
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self.output = []
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self.messages = []
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self.error_count = 0
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self.code = 0
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def run(self):
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"""Produce output and error messages"""
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try:
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bib = arxiv2bib(self.args.id)
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except HTTPError as error:
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if error.getcode() == 403:
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raise FatalError("""\
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403 Forbidden error. This usually happens when you make many
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rapid fire requests in a row. If you continue to do this, arXiv.org may
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interpret your requests as a denial of service attack.
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For more information, see http://arxiv.org/help/robots.
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""")
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else:
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raise FatalError(
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"HTTP Connection Error: {0}".format(error.getcode()))
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self.create_output(bib)
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self.code = self.tally_errors(bib)
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def create_output(self, bib):
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"""Format the output and error messages"""
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for b in bib:
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if isinstance(b, ReferenceErrorInfo):
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self.error_count += 1
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if self.args.comments:
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self.output.append(b.bibtex())
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if not self.args.quiet:
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self.messages.append(str(b))
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else:
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self.output.append(b.bibtex())
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def print_output(self):
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if not self.output:
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return
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output_string = os.linesep.join(self.output)
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try:
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print(output_string)
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except UnicodeEncodeError:
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print_bytes((output_string + os.linesep).encode('utf-8'))
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if self.args.verbose:
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self.messages.append(
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'Could not use system encoding; using utf-8')
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def tally_errors(self, bib):
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"""calculate error code"""
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if self.error_count == len(self.args.id):
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self.messages.append("No successful matches")
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return 2
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elif self.error_count > 0:
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self.messages.append("%s of %s matched succesfully" %
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(len(bib) - self.error_count, len(bib)))
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return 1
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else:
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return 0
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def print_messages(self):
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"""print messages to stderr"""
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if self.messages:
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self.messages.append("")
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sys.stderr.write(os.linesep.join(self.messages))
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@staticmethod
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def parse_args(args):
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try:
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import argparse
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except:
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sys.exit("Cannot load required module 'argparse'")
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parser = argparse.ArgumentParser(
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description="Get the BibTeX for each arXiv id.",
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epilog="""\
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Returns 0 on success, 1 on partial failure, 2 on total failure.
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Valid BibTeX is written to stdout, error messages to stderr.
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If no arguments are given, ids are read from stdin, one per line.""",
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument('id', metavar='arxiv_id', nargs="*",
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help="arxiv identifier, such as 1201.1213")
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parser.add_argument('-c', '--comments', action='store_true',
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help="Include @comment fields with error details")
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parser.add_argument('-q', '--quiet', action='store_true',
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help="Display fewer error messages")
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parser.add_argument('-v', '--verbose', action="store_true",
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help="Display more error messages")
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return parser.parse_args(args)
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def main(args=None):
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"""Run the command line interface"""
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cli = Cli(args)
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try:
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cli.run()
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except FatalError as err:
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sys.stderr.write(err.args[0] + os.linesep)
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return 2
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cli.print_output()
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cli.print_messages()
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return cli.code
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if __name__ == "__main__":
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sys.exit(main())
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