forked from zaclys/searxng
Science category: update the engines
* use the paper.html template * fetch more data from the engines * add crossref.py
This commit is contained in:
Alexandre FLAMENT
Alexandre Flament
parent
593026ad9c
commit
e36f85b836
@ -3,9 +3,10 @@
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ArXiV (Scientific preprints)
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"""
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from lxml import html
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from lxml import etree
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from lxml.etree import XPath
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from datetime import datetime
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from searx.utils import eval_xpath_list, eval_xpath_getindex
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from searx.utils import eval_xpath, eval_xpath_list, eval_xpath_getindex
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# about
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about = {
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@ -17,7 +18,7 @@ about = {
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"results": 'XML-RSS',
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}
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categories = ['science']
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categories = ['science', 'scientific publications']
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paging = True
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base_url = (
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@ -27,6 +28,23 @@ base_url = (
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# engine dependent config
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number_of_results = 10
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# xpaths
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arxiv_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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}
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xpath_entry = XPath('//atom:entry', namespaces=arxiv_namespaces)
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xpath_title = XPath('.//atom:title', namespaces=arxiv_namespaces)
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xpath_id = XPath('.//atom:id', namespaces=arxiv_namespaces)
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xpath_summary = XPath('.//atom:summary', namespaces=arxiv_namespaces)
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xpath_author_name = XPath('.//atom:author/atom:name', namespaces=arxiv_namespaces)
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xpath_doi = XPath('.//arxiv:doi', namespaces=arxiv_namespaces)
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xpath_pdf = XPath('.//atom:link[@title="pdf"]', namespaces=arxiv_namespaces)
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xpath_published = XPath('.//atom:published', namespaces=arxiv_namespaces)
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xpath_journal = XPath('.//arxiv:journal_ref', namespaces=arxiv_namespaces)
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xpath_category = XPath('.//atom:category/@term', namespaces=arxiv_namespaces)
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xpath_comment = XPath('./arxiv:comment', namespaces=arxiv_namespaces)
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def request(query, params):
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# basic search
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@ -41,30 +59,50 @@ def request(query, params):
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def response(resp):
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results = []
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dom = etree.fromstring(resp.content)
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for entry in eval_xpath_list(dom, xpath_entry):
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title = eval_xpath_getindex(entry, xpath_title, 0).text
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dom = html.fromstring(resp.content)
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url = eval_xpath_getindex(entry, xpath_id, 0).text
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abstract = eval_xpath_getindex(entry, xpath_summary, 0).text
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for entry in eval_xpath_list(dom, '//entry'):
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title = eval_xpath_getindex(entry, './/title', 0).text
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authors = [author.text for author in eval_xpath_list(entry, xpath_author_name)]
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url = eval_xpath_getindex(entry, './/id', 0).text
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# doi
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doi_element = eval_xpath_getindex(entry, xpath_doi, 0, default=None)
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doi = None if doi_element is None else doi_element.text
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content_string = '{doi_content}{abstract_content}'
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# pdf
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pdf_element = eval_xpath_getindex(entry, xpath_pdf, 0, default=None)
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pdf_url = None if pdf_element is None else pdf_element.attrib.get('href')
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abstract = eval_xpath_getindex(entry, './/summary', 0).text
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# journal
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journal_element = eval_xpath_getindex(entry, xpath_journal, 0, default=None)
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journal = None if journal_element is None else journal_element.text
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# If a doi is available, add it to the snipppet
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doi_element = eval_xpath_getindex(entry, './/link[@title="doi"]', 0, default=None)
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doi_content = doi_element.text if doi_element is not None else ''
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content = content_string.format(doi_content=doi_content, abstract_content=abstract)
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# tags
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tag_elements = eval_xpath(entry, xpath_category)
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tags = [str(tag) for tag in tag_elements]
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if len(content) > 300:
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content = content[0:300] + "..."
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# TODO: center snippet on query term
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# comments
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comments_elements = eval_xpath_getindex(entry, xpath_comment, 0, default=None)
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comments = None if comments_elements is None else comments_elements.text
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publishedDate = datetime.strptime(eval_xpath_getindex(entry, './/published', 0).text, '%Y-%m-%dT%H:%M:%SZ')
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publishedDate = datetime.strptime(eval_xpath_getindex(entry, xpath_published, 0).text, '%Y-%m-%dT%H:%M:%SZ')
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res_dict = {'url': url, 'title': title, 'publishedDate': publishedDate, 'content': content}
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res_dict = {
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'template': 'paper.html',
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'url': url,
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'title': title,
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'publishedDate': publishedDate,
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'content': abstract,
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'doi': doi,
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'authors': authors,
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'journal': journal,
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'tags': tags,
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'comments': comments,
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'pdf_url': pdf_url,
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}
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results.append(res_dict)
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59
searx/engines/crossref.py
Normal file
59
searx/engines/crossref.py
Normal file
@ -0,0 +1,59 @@
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# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""Semantic Scholar (Science)
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"""
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from urllib.parse import urlencode
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from searx.utils import html_to_text
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about = {
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"website": 'https://www.crossref.org/',
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"wikidata_id": 'Q5188229',
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"official_api_documentation": 'https://github.com/CrossRef/rest-api-doc',
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"use_official_api": False,
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"require_api_key": False,
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"results": 'JSON',
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}
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categories = ['science', 'scientific publications']
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paging = True
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search_url = 'https://api.crossref.org/works'
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def request(query, params):
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params['url'] = search_url + '?' + urlencode(dict(query=query, offset=20 * (params['pageno'] - 1)))
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return params
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def response(resp):
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res = resp.json()
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results = []
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for record in res['message']['items']:
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record_type = record['type']
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if record_type == 'book-chapter':
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title = record['container-title'][0]
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if record['title'][0].lower().strip() != title.lower().strip():
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title = title + ' (' + record['title'][0] + ')'
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journal = None
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else:
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title = record['title'][0]
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journal = record.get('container-title', [None])[0]
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url = record.get('resource', {}).get('primary', {}).get('URL') or record['URL']
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authors = [author.get('given', '') + ' ' + author.get('family', '') for author in record.get('author', [])]
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isbn = record.get('isbn') or [i['value'] for i in record.get('isbn-type', [])]
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results.append(
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{
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'template': 'paper.html',
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'url': url,
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'title': title,
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'journal': journal,
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'volume': record.get('volume'),
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'type': record['type'],
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'content': html_to_text(record.get('abstract', '')),
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'publisher': record.get('publisher'),
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'authors': authors,
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'doi': record['DOI'],
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'isbn': isbn,
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}
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)
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return results
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@ -13,10 +13,12 @@ Definitions`_.
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from urllib.parse import urlencode
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from datetime import datetime
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from typing import Optional
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from lxml import html
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from searx.utils import (
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eval_xpath,
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eval_xpath_getindex,
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eval_xpath_list,
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extract_text,
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)
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@ -46,7 +48,7 @@ about = {
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}
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# engine dependent config
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categories = ['science']
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categories = ['science', 'scientific publications']
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paging = True
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language_support = True
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use_locale_domain = True
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@ -99,7 +101,43 @@ def request(query, params):
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return params
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def response(resp):
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def parse_gs_a(text: Optional[str]):
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"""Parse the text written in green.
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Possible formats:
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* "{authors} - {journal}, {year} - {publisher}"
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* "{authors} - {year} - {publisher}"
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* "{authors} - {publisher}"
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"""
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if text is None or text == "":
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return None, None, None, None
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s_text = text.split(' - ')
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authors = s_text[0].split(', ')
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publisher = s_text[-1]
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if len(s_text) != 3:
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return authors, None, publisher, None
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# the format is "{authors} - {journal}, {year} - {publisher}" or "{authors} - {year} - {publisher}"
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# get journal and year
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journal_year = s_text[1].split(', ')
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# journal is optional and may contains some coma
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if len(journal_year) > 1:
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journal = ', '.join(journal_year[0:-1])
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if journal == '…':
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journal = None
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else:
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journal = None
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# year
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year = journal_year[-1]
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try:
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publishedDate = datetime.strptime(year.strip(), '%Y')
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except ValueError:
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publishedDate = None
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return authors, journal, publisher, publishedDate
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def response(resp): # pylint: disable=too-many-locals
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"""Get response from google's search request"""
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results = []
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@ -112,30 +150,53 @@ def response(resp):
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dom = html.fromstring(resp.text)
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# parse results
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for result in eval_xpath_list(dom, '//div[@class="gs_ri"]'):
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for result in eval_xpath_list(dom, '//div[@data-cid]'):
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title = extract_text(eval_xpath(result, './h3[1]//a'))
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title = extract_text(eval_xpath(result, './/h3[1]//a'))
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if not title:
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# this is a [ZITATION] block
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continue
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url = eval_xpath(result, './h3[1]//a/@href')[0]
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content = extract_text(eval_xpath(result, './div[@class="gs_rs"]')) or ''
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pub_info = extract_text(eval_xpath(result, './div[@class="gs_a"]'))
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if pub_info:
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content += "[%s]" % pub_info
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pub_type = extract_text(eval_xpath(result, './/span[@class="gs_ct1"]'))
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if pub_type:
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title = title + " " + pub_type
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pub_type = pub_type[1:-1].lower()
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url = eval_xpath_getindex(result, './/h3[1]//a/@href', 0)
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content = extract_text(eval_xpath(result, './/div[@class="gs_rs"]'))
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authors, journal, publisher, publishedDate = parse_gs_a(
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extract_text(eval_xpath(result, './/div[@class="gs_a"]'))
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)
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if publisher in url:
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publisher = None
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# cited by
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comments = extract_text(eval_xpath(result, './/div[@class="gs_fl"]/a[starts-with(@href,"/scholar?cites=")]'))
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# link to the html or pdf document
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html_url = None
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pdf_url = None
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doc_url = eval_xpath_getindex(result, './/div[@class="gs_or_ggsm"]/a/@href', 0, default=None)
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doc_type = extract_text(eval_xpath(result, './/span[@class="gs_ctg2"]'))
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if doc_type == "[PDF]":
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pdf_url = doc_url
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else:
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html_url = doc_url
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results.append(
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{
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'template': 'paper.html',
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'type': pub_type,
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'url': url,
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'title': title,
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'authors': authors,
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'publisher': publisher,
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'journal': journal,
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'publishedDate': publishedDate,
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'content': content,
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'comments': comments,
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'html_url': html_url,
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'pdf_url': pdf_url,
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}
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)
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@ -3,11 +3,15 @@
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PubMed (Scholar publications)
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"""
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from flask_babel import gettext
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from lxml import etree
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from datetime import datetime
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from urllib.parse import urlencode
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from searx.network import get
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from searx.utils import (
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eval_xpath_getindex,
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eval_xpath_list,
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extract_text,
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)
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# about
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about = {
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@ -22,7 +26,7 @@ about = {
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"results": 'XML',
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}
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categories = ['science']
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categories = ['science', 'scientific publications']
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base_url = (
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'https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi' + '?db=pubmed&{query}&retstart={offset}&retmax={hits}'
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@ -63,46 +67,61 @@ def response(resp):
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retrieve_url_encoded = pubmed_retrieve_api_url.format(**retrieve_notice_args)
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search_results_xml = get(retrieve_url_encoded).content
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search_results = etree.XML(search_results_xml).xpath('//PubmedArticleSet/PubmedArticle/MedlineCitation')
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search_results_response = get(retrieve_url_encoded).content
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search_results = etree.XML(search_results_response)
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for entry in eval_xpath_list(search_results, '//PubmedArticle'):
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medline = eval_xpath_getindex(entry, './MedlineCitation', 0)
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for entry in search_results:
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title = entry.xpath('.//Article/ArticleTitle')[0].text
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pmid = entry.xpath('.//PMID')[0].text
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title = eval_xpath_getindex(medline, './/Article/ArticleTitle', 0).text
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pmid = eval_xpath_getindex(medline, './/PMID', 0).text
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url = pubmed_url + pmid
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content = extract_text(
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eval_xpath_getindex(medline, './/Abstract/AbstractText//text()', 0, default=None), allow_none=True
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)
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doi = extract_text(
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eval_xpath_getindex(medline, './/ELocationID[@EIdType="doi"]/text()', 0, default=None), allow_none=True
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)
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journal = extract_text(
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eval_xpath_getindex(medline, './Article/Journal/Title/text()', 0, default=None), allow_none=True
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)
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issn = extract_text(
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eval_xpath_getindex(medline, './Article/Journal/ISSN/text()', 0, default=None), allow_none=True
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)
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authors = []
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for author in eval_xpath_list(medline, './Article/AuthorList/Author'):
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f = eval_xpath_getindex(author, './ForeName', 0, default=None)
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l = eval_xpath_getindex(author, './LastName', 0, default=None)
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f = '' if f is None else f.text
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l = '' if l is None else l.text
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authors.append((f + ' ' + l).strip())
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try:
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content = entry.xpath('.//Abstract/AbstractText')[0].text
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except:
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content = gettext('No abstract is available for this publication.')
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res_dict = {
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'template': 'paper.html',
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'url': url,
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'title': title,
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'content': content,
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'journal': journal,
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'issn': [issn],
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'authors': authors,
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'doi': doi,
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}
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# If a doi is available, add it to the snipppet
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try:
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doi = entry.xpath('.//ELocationID[@EIdType="doi"]')[0].text
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content = 'DOI: {doi} Abstract: {content}'.format(doi=doi, content=content)
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except:
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pass
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if len(content) > 300:
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content = content[0:300] + "..."
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# TODO: center snippet on query term
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res_dict = {'url': url, 'title': title, 'content': content}
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try:
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publishedDate = datetime.strptime(
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entry.xpath('.//DateCreated/Year')[0].text
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+ '-'
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+ entry.xpath('.//DateCreated/Month')[0].text
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+ '-'
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+ entry.xpath('.//DateCreated/Day')[0].text,
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'%Y-%m-%d',
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)
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res_dict['publishedDate'] = publishedDate
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except:
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pass
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accepted_date = eval_xpath_getindex(
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entry, './PubmedData/History//PubMedPubDate[@PubStatus="accepted"]', 0, default=None
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)
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if accepted_date is not None:
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year = eval_xpath_getindex(accepted_date, './Year', 0)
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month = eval_xpath_getindex(accepted_date, './Month', 0)
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day = eval_xpath_getindex(accepted_date, './Day', 0)
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try:
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publishedDate = datetime.strptime(
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year.text + '-' + month.text + '-' + day.text,
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'%Y-%m-%d',
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)
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res_dict['publishedDate'] = publishedDate
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except Exception as e:
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print(e)
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results.append(res_dict)
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return results
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return results
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@ -6,6 +6,8 @@
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from json import dumps, loads
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from datetime import datetime
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from flask_babel import gettext
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about = {
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"website": 'https://www.semanticscholar.org/',
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"wikidata_id": 'Q22908627',
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@ -15,6 +17,7 @@ about = {
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"results": 'JSON',
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}
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categories = ['science', 'scientific publications']
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paging = True
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search_url = 'https://www.semanticscholar.org/api/1/search'
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paper_url = 'https://www.semanticscholar.org/paper'
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@ -47,9 +50,6 @@ def response(resp):
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results = []
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for result in res['results']:
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item = {}
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metadata = []
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|
||||
url = result.get('primaryPaperLink', {}).get('url')
|
||||
if not url and result.get('links'):
|
||||
url = result.get('links')[0]
|
||||
@ -60,22 +60,47 @@ def response(resp):
|
||||
if not url:
|
||||
url = paper_url + '/%s' % result['id']
|
||||
|
||||
item['url'] = url
|
||||
# publishedDate
|
||||
if 'pubDate' in result:
|
||||
publishedDate = datetime.strptime(result['pubDate'], "%Y-%m-%d")
|
||||
else:
|
||||
publishedDate = None
|
||||
|
||||
item['title'] = result['title']['text']
|
||||
item['content'] = result['paperAbstract']['text']
|
||||
# authors
|
||||
authors = [author[0]['name'] for author in result.get('authors', [])]
|
||||
|
||||
metadata = result.get('fieldsOfStudy') or []
|
||||
venue = result.get('venue', {}).get('text')
|
||||
if venue:
|
||||
metadata.append(venue)
|
||||
if metadata:
|
||||
item['metadata'] = ', '.join(metadata)
|
||||
# pick for the first alternate link, but not from the crawler
|
||||
pdf_url = None
|
||||
for doc in result.get('alternatePaperLinks', []):
|
||||
if doc['linkType'] != 'crawler':
|
||||
pdf_url = doc['url']
|
||||
break
|
||||
|
||||
pubDate = result.get('pubDate')
|
||||
if pubDate:
|
||||
item['publishedDate'] = datetime.strptime(pubDate, "%Y-%m-%d")
|
||||
# comments
|
||||
comments = None
|
||||
if 'citationStats' in result:
|
||||
comments = gettext(
|
||||
'{numCitations} citations from the year {firstCitationVelocityYear} to {lastCitationVelocityYear}'
|
||||
).format(
|
||||
numCitations=result['citationStats']['numCitations'],
|
||||
firstCitationVelocityYear=result['citationStats']['firstCitationVelocityYear'],
|
||||
lastCitationVelocityYear=result['citationStats']['lastCitationVelocityYear'],
|
||||
)
|
||||
|
||||
results.append(item)
|
||||
results.append(
|
||||
{
|
||||
'template': 'paper.html',
|
||||
'url': url,
|
||||
'title': result['title']['text'],
|
||||
'content': result['paperAbstract']['text'],
|
||||
'journal': result.get('venue', {}).get('text') or result.get('journal', {}).get('name'),
|
||||
'doi': result.get('doiInfo', {}).get('doi'),
|
||||
'tags': result.get('fieldsOfStudy'),
|
||||
'authors': authors,
|
||||
'pdf_url': pdf_url,
|
||||
'publishedDate': publishedDate,
|
||||
'comments': comments,
|
||||
}
|
||||
)
|
||||
|
||||
return results
|
||||
|
||||
@ -19,7 +19,7 @@ about = {
|
||||
"results": 'JSON',
|
||||
}
|
||||
|
||||
categories = ['science']
|
||||
categories = ['science', 'scientific publications']
|
||||
paging = True
|
||||
nb_per_page = 10
|
||||
api_key = 'unset'
|
||||
@ -41,32 +41,30 @@ def response(resp):
|
||||
json_data = loads(resp.text)
|
||||
|
||||
for record in json_data['records']:
|
||||
content = record['abstract'][0:500]
|
||||
if len(record['abstract']) > len(content):
|
||||
content += "..."
|
||||
content = record['abstract']
|
||||
published = datetime.strptime(record['publicationDate'], '%Y-%m-%d')
|
||||
|
||||
metadata = [
|
||||
record[x]
|
||||
for x in [
|
||||
'publicationName',
|
||||
'identifier',
|
||||
'contentType',
|
||||
]
|
||||
if record.get(x) is not None
|
||||
]
|
||||
|
||||
metadata = ' / '.join(metadata)
|
||||
if record.get('startingPage') and record.get('endingPage') is not None:
|
||||
metadata += " (%(startingPage)s-%(endingPage)s)" % record
|
||||
|
||||
authors = [" ".join(author['creator'].split(', ')[::-1]) for author in record['creators']]
|
||||
tags = record.get('genre')
|
||||
if isinstance(tags, str):
|
||||
tags = [tags]
|
||||
results.append(
|
||||
{
|
||||
'template': 'paper.html',
|
||||
'title': record['title'],
|
||||
'url': record['url'][0]['value'].replace('http://', 'https://', 1),
|
||||
'type': record.get('contentType'),
|
||||
'content': content,
|
||||
'publishedDate': published,
|
||||
'metadata': metadata,
|
||||
'authors': authors,
|
||||
'doi': record.get('doi'),
|
||||
'journal': record.get('publicationName'),
|
||||
'start_page': record.get('start_page'),
|
||||
'end_page': record.get('end_page'),
|
||||
'tags': tags,
|
||||
'issn': [record.get('issn')],
|
||||
'isbn': [record.get('isbn')],
|
||||
'volume': record.get('volume') or None,
|
||||
'number': record.get('number') or None,
|
||||
}
|
||||
)
|
||||
return results
|
||||
|
||||
@ -43,6 +43,7 @@ CATEGORY_GROUPS = {
|
||||
'REPOS': 'repos',
|
||||
'SOFTWARE_WIKIS': 'software wikis',
|
||||
'WEB': 'web',
|
||||
'SCIENTIFIC PUBLICATIONS': 'scientific publications',
|
||||
}
|
||||
|
||||
STYLE_NAMES = {
|
||||
|
||||
@ -319,7 +319,6 @@ engines:
|
||||
- name: arxiv
|
||||
engine: arxiv
|
||||
shortcut: arx
|
||||
categories: science
|
||||
timeout: 4.0
|
||||
|
||||
# tmp suspended: dh key too small
|
||||
@ -411,23 +410,9 @@ engines:
|
||||
# api_key: 'unset'
|
||||
|
||||
- name: crossref
|
||||
engine: json_engine
|
||||
paging: true
|
||||
search_url: https://search.crossref.org/dois?q={query}&page={pageno}
|
||||
url_query: doi
|
||||
title_query: title
|
||||
title_html_to_text: true
|
||||
content_query: fullCitation
|
||||
content_html_to_text: true
|
||||
categories: science
|
||||
engine: crossref
|
||||
shortcut: cr
|
||||
about:
|
||||
website: https://www.crossref.org/
|
||||
wikidata_id: Q5188229
|
||||
official_api_documentation: https://github.com/CrossRef/rest-api-doc
|
||||
use_official_api: false
|
||||
require_api_key: false
|
||||
results: JSON
|
||||
timeout: 10
|
||||
|
||||
- name: yep
|
||||
engine: json_engine
|
||||
@ -1068,7 +1053,7 @@ engines:
|
||||
title_query: metadata/oaf:entity/oaf:result/title/$
|
||||
content_query: metadata/oaf:entity/oaf:result/description/$
|
||||
content_html_to_text: true
|
||||
categories: science
|
||||
categories: "science"
|
||||
shortcut: oad
|
||||
timeout: 5.0
|
||||
about:
|
||||
@ -1198,7 +1183,6 @@ engines:
|
||||
- name: pubmed
|
||||
engine: pubmed
|
||||
shortcut: pub
|
||||
categories: science
|
||||
timeout: 3.0
|
||||
|
||||
- name: pypi
|
||||
@ -1346,7 +1330,6 @@ engines:
|
||||
engine: semantic_scholar
|
||||
disabled: true
|
||||
shortcut: se
|
||||
categories: science
|
||||
|
||||
# Spotify needs API credentials
|
||||
# - name: spotify
|
||||
@ -1372,8 +1355,7 @@ engines:
|
||||
# # working API key, for test & debug: "a69685087d07eca9f13db62f65b8f601"
|
||||
# api_key: 'unset'
|
||||
# shortcut: springer
|
||||
# categories: science
|
||||
# timeout: 6.0
|
||||
# timeout: 15.0
|
||||
|
||||
- name: startpage
|
||||
engine: startpage
|
||||
|
||||
Loading…
Reference in New Issue
Block a user