147 lines
4.4 KiB
Python
147 lines
4.4 KiB
Python
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#!/usr/bin/env python
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"""
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wikipedia.py - Phenny Wikipedia Module
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Copyright 2008, Sean B. Palmer, inamidst.com
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Licensed under the Eiffel Forum License 2.
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http://inamidst.com/phenny/
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"""
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import re, urllib
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import web
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wikiuri = 'http://en.wikipedia.org/wiki/%s'
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wikisearch = 'http://en.wikipedia.org/wiki/Special:Search?' \
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+ 'search=%s&fulltext=Search'
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r_tr = re.compile(r'(?ims)<tr[^>]*>.*?</tr>')
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r_paragraph = re.compile(r'(?ims)<p[^>]*>.*?</p>|<li(?!n)[^>]*>.*?</li>')
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r_tag = re.compile(r'<(?!!)[^>]+>')
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r_whitespace = re.compile(r'[\t\r\n ]+')
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r_redirect = re.compile(
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r'(?ims)class=.redirectText.>\s*<a\s*href=./wiki/([^"/]+)'
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)
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abbrs = ['etc', 'ca', 'cf', 'Co', 'Ltd', 'Inc', 'Mt', 'Mr', 'Mrs',
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'Dr', 'Ms', 'Rev', 'Fr', 'St', 'Sgt', 'pron', 'approx', 'lit',
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'syn'] \
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+ list('ABCDEFGHIJKLMNOPQRSTUVWXYZ') \
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+ list('abcdefghijklmnopqrstuvwxyz')
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t_sentence = r'^.{5,}?(?<!\b%s)(?:\.(?= [A-Z0-9]|\Z)|\Z)'
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r_sentence = re.compile(t_sentence % r')(?<!\b'.join(abbrs))
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def unescape(s):
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s = s.replace('>', '>')
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s = s.replace('<', '<')
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s = s.replace('&', '&')
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s = s.replace(' ', ' ')
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return s
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def text(html):
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html = r_tag.sub('', html)
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html = r_whitespace.sub(' ', html)
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return unescape(html).strip()
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def search(term):
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try: import google
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except ImportError, e:
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print e
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return term
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term = term.replace('_', ' ')
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uri = google.google('site:en.wikipedia.org %s' % term)
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if uri:
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return uri[len('http://en.wikipedia.org/wiki/'):]
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else: return term
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def wikipedia(term, last=False):
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bytes = web.get(wikiuri % urllib.quote(term))
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bytes = r_tr.sub('', bytes)
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if not last:
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r = r_redirect.search(bytes[:4096])
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if r:
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term = urllib.unquote(r.group(1))
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return wikipedia(term, last=True)
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paragraphs = r_paragraph.findall(bytes)
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if not paragraphs:
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if not last:
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term = search(term)
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return wikipedia(term, last=True)
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return None
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# Pre-process
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paragraphs = [para for para in paragraphs
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if (para and 'technical limitations' not in para
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and 'window.showTocToggle' not in para
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and 'Deletion_policy' not in para
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and 'Template:AfD_footer' not in para
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and not (para.startswith('<p><i>') and
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para.endswith('</i></p>'))
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and not 'disambiguation)"' in para)
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and not '(images and media)' in para
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and not 'This article contains a' in para
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and not 'id="coordinates"' in para]
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for i, para in enumerate(paragraphs):
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para = para.replace('<sup>', '|')
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para = para.replace('</sup>', '|')
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paragraphs[i] = text(para).strip()
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# Post-process
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paragraphs = [para for para in paragraphs if
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(para and not (para.endswith(':') and len(para) < 150))]
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para = text(paragraphs[0])
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m = r_sentence.match(para)
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if not m:
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if not last:
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term = search(term)
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return wikipedia(term, last=True)
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return None
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sentence = m.group(0)
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maxlength = 275
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if len(sentence) > maxlength:
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sentence = sentence[:maxlength]
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words = sentence[:-5].split(' ')
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words.pop()
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sentence = ' '.join(words) + ' [...]'
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if ((sentence == 'Wikipedia does not have an article with this exact name.')
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or (sentence == 'Wikipedia does not have a page with this exact name.')):
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if not last:
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term = search(term)
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return wikipedia(term, last=True)
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return None
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sentence = '"' + sentence.replace('"', "'") + '"'
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return sentence + ' - ' + (wikiuri % term)
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def wik(phenny, input):
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origterm = input.groups()[1]
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term = urllib.unquote(origterm)
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if not term:
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return phenny.say(origin.sender, 'Maybe you meant ".wik Zen"?')
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term = term[0].upper() + term[1:]
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term = term.replace(' ', '_')
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try: result = wikipedia(term)
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except IOError:
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error = "Can't connect to en.wikipedia.org (%s)" % (wikiuri % term)
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return phenny.say(error)
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if result is not None:
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phenny.say(result)
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else: phenny.say('Can\'t find anything in Wikipedia for "%s".' % origterm)
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wik.commands = ['wik']
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wik.priority = 'high'
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if __name__ == '__main__':
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print __doc__.strip()
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