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[enh] google engine : parse map links and more

This commit is contained in:
Alexandre Flament 2015-06-05 11:23:24 +02:00
parent aa1b8fa79b
commit b8fc531b60
1 changed files with 166 additions and 14 deletions
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178
searx/engines/google.py
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@ -8,6 +8,7 @@
# @stable no (HTML can change)
# @parse url, title, content, suggestion
import re
from urllib import urlencode
from urlparse import urlparse, parse_qsl
from lxml import html
@ -78,15 +79,22 @@ country_to_hostname = {
'TW': 'www.google.com.tw' # Taiwan
}
# osm
url_map = 'https://www.openstreetmap.org/'\
+ '?lat={latitude}&lon={longitude}&zoom={zoom}&layers=M'
# search-url
search_path = '/search'
maps_path = '/maps/'
redirect_path = '/url'
images_path = '/images'
search_url = ('https://{hostname}' +
search_path +
'?{query}&start={offset}&gbv=1')
# other URLs
map_hostname_start = 'maps.google.'
maps_path = '/maps'
redirect_path = '/url'
images_path = '/images'
# specific xpath variables
results_xpath = '//li[@class="g"]'
url_xpath = './/h3/a/@href'
@ -95,10 +103,32 @@ content_xpath = './/span[@class="st"]'
content_misc_xpath = './/div[@class="f slp"]'
suggestion_xpath = '//p[@class="_Bmc"]'
# map : detail location
map_address_xpath = './/div[@class="s"]//table//td[2]/span/text()'
map_phone_xpath = './/div[@class="s"]//table//td[2]/span/span'
map_website_url_xpath = 'h3[2]/a/@href'
map_website_title_xpath = 'h3[2]'
# map : near the location
map_near = 'table[@class="ts"]//tr'
map_near_title = './/h4'
map_near_url = './/h4/a/@href'
map_near_phone = './/span[@class="nobr"]'
# images
images_xpath = './/div/a'
image_url_xpath = './@href'
image_img_src_xpath = './img/@src'
# property names
# FIXME : no translation
property_address = "Address"
property_phone = "Phone number"
property_location = "Location"
property_website = "Web site"
property_gplus_website = "Google plus"
# cookies
pref_cookie = ''
nid_cookie = {}
@ -122,6 +152,11 @@ def get_google_nid_cookie(google_hostname):
# remove google-specific tracking-url
def parse_url(url_string, google_hostname):
# sanity check
if url_string is None:
return url_string
# normal case
parsed_url = urlparse(url_string)
if (parsed_url.netloc in [google_hostname, '']
and parsed_url.path == redirect_path):
@ -131,6 +166,19 @@ def parse_url(url_string, google_hostname):
return url_string
# URL : get label
def url_get_label(url_string):
# sanity check
if url_string is None:
return url_string
# normal case
parsed_url = urlparse(url_string)
if parsed_url.netloc == 'plus.google.com':
return property_gplus_website
return property_website
# returns extract_text on the first result selected by the xpath or None
def extract_text_from_dom(result, xpath):
r = result.xpath(xpath)
@ -151,7 +199,7 @@ def request(query, params):
if len(language_array) == 2:
country = language_array[1]
else:
country = ' '
country = 'US'
language = language_array[0] + ',' + language_array[0] + '-' + country
if use_locale_domain:
@ -196,21 +244,32 @@ def response(resp):
try:
url = parse_url(extract_url(result.xpath(url_xpath), google_url), google_hostname)
parsed_url = urlparse(url, google_hostname)
if (parsed_url.netloc == google_hostname
and (parsed_url.path == search_path
or parsed_url.path.startswith(maps_path))):
# remove the link to google news and google maps
# FIXME : sometimes the URL is https://maps.google.*/maps
# no consequence, the result trigger an exception after which is ignored
continue
# map result
if ((parsed_url.netloc == google_hostname and parsed_url.path.startswith(maps_path))
or (parsed_url.netloc.startswith(map_hostname_start))):
x = result.xpath(map_near)
if len(x) > 0:
# map : near the location
results = results + parse_map_near(parsed_url, x, google_hostname)
else:
# map : detail about a location
results = results + parse_map_detail(parsed_url, result, google_hostname)
# google news
elif (parsed_url.netloc == google_hostname
and parsed_url.path == search_path):
# skipping news results
pass
# images result
if (parsed_url.netloc == google_hostname
elif (parsed_url.netloc == google_hostname
and parsed_url.path == images_path):
# only thumbnail image provided,
# so skipping image results
# results = results + parse_images(result, google_hostname)
pass
else:
# normal result
content = extract_text_from_dom(result, content_xpath)
@ -223,7 +282,7 @@ def response(resp):
results.append({'url': url,
'title': title,
'content': content})
except Exception:
except:
continue
# parse suggestion
@ -249,3 +308,96 @@ def parse_images(result, google_hostname):
'template': 'images.html'})
return results
def parse_map_near(parsed_url, x, google_hostname):
results = []
for result in x:
title = extract_text_from_dom(result, map_near_title)
url = parse_url(extract_text_from_dom(result, map_near_url), google_hostname)
phone = extract_text_from_dom(result, map_near_phone)
if phone is not None:
phone = property_phone + ": " + phone
results.append({'url': url,
'title': title,
'content': phone})
return results
def parse_map_detail(parsed_url, result, google_hostname):
results = []
# try to parse the geoloc
m = re.search('@([0-9\.]+),([0-9\.]+),([0-9]+)', parsed_url.path)
if m is None:
m = re.search('ll\=([0-9\.]+),([0-9\.]+)\&z\=([0-9]+)', parsed_url.query)
if m is not None:
# geoloc found
lon = float(m.group(2))
lat = float(m.group(1))
zoom = int(m.group(3))
# TODO : map zoom to dlon / dlat
dlon = 0.000001
dlat = 0.000001
boundingbox = [round(lat - dlat, 7), round(lat + dlat, 7), round(lon - dlon, 7), round(lon + dlon, 7)]
map_url = url_map\
.replace('{latitude}', str(lat))\
.replace('{longitude}', str(lon))\
.replace('{zoom}', str(zoom+2))
geojson = {u'type': u'Point',
u'coordinates': [lon, lat]
}
# attributes
attributes = []
add_attributes(attributes, property_address, extract_text_from_dom(result, map_address_xpath))
add_attributes(attributes, property_phone, extract_text_from_dom(result, map_phone_xpath))
# title / content / url
website_title = extract_text_from_dom(result, map_website_title_xpath)
content = extract_text_from_dom(result, content_xpath)
website_url = parse_url(extract_text_from_dom(result, map_website_url_xpath), google_hostname)
# add an infobox if there is a website
if website_url is not None:
results.append({'infobox': website_title,
'id': website_url,
'content': content,
'attributes': attributes,
'urls': [
{'title': url_get_label(website_url), 'url': website_url},
{'title': property_location, 'url': map_url}
]
})
# usefull because user can see the map directly into searx
results.append({'template': 'map.html',
'title': website_title,
'content': (content + '<br />' if content is not None else '')
+ attributes_to_html(attributes),
'longitude': lon,
'latitude': lat,
'boundingbox': boundingbox,
'geojson': geojson,
'url': website_url if website_url is not None else map_url
})
return results
def add_attributes(attributes, name, value):
if value is not None and len(value) > 0:
attributes.append({'label': name, 'value': value})
def attributes_to_html(attributes):
retval = '<table class="table table-striped">'
for a in attributes:
retval = retval + '<tr><th>' + a.get('label') + '</th><td>' + a.get('value') + '</td></tr>'
retval = retval + '</table>'
return retval