python-ox/ox/web/google.py
2010-07-08 01:25:57 +02:00

57 lines
1.5 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
import re
import time
import urllib
import urllib2
import weakref
import threading
import Queue
import simplejson
import ox
from ox import stripTags
'''
usage:
import google
google.find(query)
for result in google.find(query): result
result is title, url, description
google.find(query, max_results)
FIXME: how search depper than first page?
'''
DEFAULT_MAX_RESULTS = 10
DEFAULT_TIMEOUT = 24*60*60
def readUrl(url, data=None, headers=ox.net.DEFAULT_HEADERS, timeout=DEFAULT_TIMEOUT):
return ox.cache.readUrl(url, data, headers, timeout)
def quote_plus(s):
return urllib.quote_plus(s.encode('utf-8'))
def find(query, max_results=DEFAULT_MAX_RESULTS, timeout=DEFAULT_TIMEOUT):
url = "http://www.google.com/search?q=%s" % quote_plus(query)
data = readUrl(url, timeout=timeout)
link_re = r'<a href="(?P<url>[^"]*?)" class=l.*?>(?P<name>.*?)</a>' + \
r'.*?(?:<br>|<table.*?>)' + \
r'(?P<desc>.*?)' + '(?:<font color=#008000>|<a)'
results = []
for match in re.compile(link_re, re.DOTALL).finditer(data):
(name, url, desc) = match.group('name', 'url', 'desc')
results.append((stripTags(name), url, stripTags(desc)))
if len(results) > max_results:
results = results[:max_results]
return results
def _find(query):
url = 'http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=%s' % quote_plus(query)
results = simplejson.loads(ox.cache.readUrlUnicode(url))['responseData']['results']
return results