[enh] google engine : parse map links and more

searx/engines/google.py

@@ -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
-                    and parsed_url.path == images_path):
+            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