Add F-Droid search engine

searx/engines/fdroid.py

@@ -0,0 +1,53 @@
+"""
+ F-Droid (a repository of FOSS applications for Android)
+
+ @website      https://f-droid.org/
+ @provide-api  no
+ @using-api    no
+ @results      HTML
+ @stable       no (HTML can change)
+ @parse        url, title, content
+"""
+
+from cgi import escape
+from urllib import urlencode
+from searx.engines.xpath import extract_text
+from lxml import html
+
+# engine dependent config
+categories = ['files']
+paging = True
+
+# search-url
+base_url = 'https://f-droid.org/'
+search_url = base_url + 'repository/browse/?{query}'
+
+
+# do search-request
+def request(query, params):
+    query = urlencode({'fdfilter': query,
+                       'fdpage': params['pageno']})
+    params['url'] = search_url.format(query=query)
+    return params
+
+
+# get response from search-request
+def response(resp):
+    results = []
+
+    dom = html.fromstring(resp.text)
+
+    for app in dom.xpath('//div[@id="appheader"]'):
+        url = app.xpath('./ancestor::a/@href')[0]
+        title = app.xpath('./p/span/text()')[0]
+        img_src = app.xpath('.//img/@src')[0]
+
+        content = extract_text(app.xpath('./p')[0])
+        content = escape(content.replace(title, '', 1).strip())
+
+        results.append({'url': url,
+                        'title': title,
+                        'content': content,
+                        'img_src': img_src})
+
+    return results