Merge pull request #357 from asciimoo/google_engine

[enh] google engine : parse map links and more

searx/engines/google.py

 # @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
     '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'
 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"
+
+# cookies
 pref_cookie = ''
 nid_cookie = {}
 
 
 # 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):
         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:
         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)
                 # append result
                 results.append({'url': url,
                                 'title': title,
-                                'content': content})
-        except Exception:
+                                'content': content
+                                })
+        except:
             continue
 
     # parse suggestion
                         'title': '',
                         'content': '',
                         'img_src': img_src,
-                        'template': 'images.html'})
+                        '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)
+        attributes = []
+        phone = extract_text_from_dom(result, map_near_phone)
+        add_attributes(attributes, property_phone, phone, 'tel:' + phone)
+        results.append({'title': title,
+                        'url': url,
+                        'content': attributes_to_html(attributes)
+                        })
 
     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 (ignored)
+        lon = float(m.group(2))  # noqa
+        lat = float(m.group(1))  # noqa
+        zoom = int(m.group(3))  # noqa
+
+        # attributes
+        attributes = []
+        address = extract_text_from_dom(result, map_address_xpath)
+        phone = extract_text_from_dom(result, map_phone_xpath)
+        add_attributes(attributes, property_address, address, 'geo:' + str(lat) + ',' + str(lon))
+        add_attributes(attributes, property_phone, phone, 'tel:' + phone)
+
+        # 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 a result if there is a website
+        if website_url is not None:
+            results.append({'title': website_title,
+                            'content': (content + '<br />' if content is not None else '')
+                            + attributes_to_html(attributes),
+                            'url': website_url
+                            })
+
+    return results
+
+
+def add_attributes(attributes, name, value, url):
+    if value is not None and len(value) > 0:
+        attributes.append({'label': name, 'value': value, 'url': url})
+
+
+def attributes_to_html(attributes):
+    retval = '<table class="table table-striped">'
+    for a in attributes:
+        value = a.get('value')
+        if 'url' in a:
+            value = '<a href="' + a.get('url') + '">' + value + '</a>'
+        retval = retval + '<tr><th>' + a.get('label') + '</th><td>' + value + '</td></tr>'
+    retval = retval + '</table>'
+    return retval