115 lines
2.8 KiB
Python
115 lines
2.8 KiB
Python
|
"""
|
||
|
|
Wikipedia (Web)
|
||
|
|
|
||
|
|
@website https://{language}.wikipedia.org
|
||
|
|
@provide-api yes
|
||
|
|
|
||
|
|
@using-api yes
|
||
|
|
@results JSON
|
||
|
|
@stable yes
|
||
|
|
@parse url, infobox
|
||
|
|
"""
|
||
|
|
|
||
|
|
from json import loads
|
||
|
|
from urllib import urlencode, quote
|
||
|
|
|
||
|
|
# search-url
|
||
|
|
base_url = 'https://{language}.wikipedia.org/'
|
||
|
|
search_postfix = 'w/api.php?'\
|
||
|
|
'action=query'\
|
||
|
|
'&format=json'\
|
||
|
|
'&{query}'\
|
||
|
|
'&prop=extracts|pageimages'\
|
||
|
|
'&exintro'\
|
||
|
|
'&explaintext'\
|
||
|
|
'&pithumbsize=300'\
|
||
|
|
'&redirects'
|
||
|
|
|
||
|
|
|
||
|
|
# set language in base_url
|
||
|
|
def url_lang(lang):
|
||
|
|
if lang == 'all':
|
||
|
|
language = 'en'
|
||
|
|
else:
|
||
|
|
language = lang.split('_')[0]
|
||
|
|
|
||
|
|
return base_url.format(language=language)
|
||
|
|
|
||
|
|
|
||
|
|
# do search-request
|
||
|
|
def request(query, params):
|
||
|
|
if query.islower():
|
||
|
|
query += '|' + query.title()
|
||
|
|
|
||
|
|
params['url'] = url_lang(params['language']) \
|
||
|
|
+ search_postfix.format(query=urlencode({'titles': query}))
|
||
|
|
|
||
|
|
return params
|
||
|
|
|
||
|
|
|
||
|
|
# get first meaningful paragraph
|
||
|
|
# this should filter out disambiguation pages and notes above first paragraph
|
||
|
|
# "magic numbers" were obtained by fine tuning
|
||
|
|
def extract_first_paragraph(content, title, image):
|
||
|
|
first_paragraph = None
|
||
|
|
|
||
|
|
failed_attempts = 0
|
||
|
|
for paragraph in content.split('\n'):
|
||
|
|
|
||
|
|
starts_with_title = paragraph.lower().find(title.lower(), 0, len(title) + 35)
|
||
|
|
length = len(paragraph)
|
||
|
|
|
||
|
|
if length >= 200 or (starts_with_title >= 0 and (image or length >= 150)):
|
||
|
|
first_paragraph = paragraph
|
||
|
|
break
|
||
|
|
|
||
|
|
failed_attempts += 1
|
||
|
|
if failed_attempts > 3:
|
||
|
|
return None
|
||
|
|
|
||
|
|
return first_paragraph
|
||
|
|
|
||
|
|
|
||
|
|
# get response from search-request
|
||
|
|
def response(resp):
|
||
|
|
results = []
|
||
|
|
|
||
|
|
search_result = loads(resp.content)
|
||
|
|
|
||
|
|
# wikipedia article's unique id
|
||
|
|
# first valid id is assumed to be the requested article
|
||
|
|
for article_id in search_result['query']['pages']:
|
||
|
|
page = search_result['query']['pages'][article_id]
|
||
|
|
if int(article_id) > 0:
|
||
|
|
break
|
||
|
|
|
||
|
|
if int(article_id) < 0:
|
||
|
|
return []
|
||
|
|
|
||
|
|
title = page.get('title')
|
||
|
|
|
||
|
|
image = page.get('thumbnail')
|
||
|
|
if image:
|
||
|
|
image = image.get('source')
|
||
|
|
|
||
|
|
extract = page.get('extract')
|
||
|
|
|
||
|
|
summary = extract_first_paragraph(extract, title, image)
|
||
|
|
if not summary:
|
||
|
|
return []
|
||
|
|
|
||
|
|
# link to wikipedia article
|
||
|
|
# parenthesis are not quoted to make infobox mergeable with wikidata's
|
||
|
|
wikipedia_link = url_lang(resp.search_params['language']) \
|
||
|
|
+ 'wiki/' + quote(title.replace(' ', '_').encode('utf8')).replace('%28', '(').replace('%29', ')')
|
||
|
|
|
||
|
|
results.append({'url': wikipedia_link, 'title': title})
|
||
|
|
|
||
|
|
results.append({'infobox': title,
|
||
|
|
'id': wikipedia_link,
|
||
|
|
'content': summary,
|
||
|
|
'img_src': image,
|
||
|
|
'urls': [{'title': 'Wikipedia', 'url': wikipedia_link}]})
|
||
|
|
|
||
|
|
return results
|