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[doc] engines overview added

Adam Tauber před 9 roky
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  4. 314
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  7. 1
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1 
+Engine overview
2 
+===============
3 
+
4 
+
5 
+searx is a `metasearch-engine <https://en.wikipedia.org/wiki/Metasearch_engine>`__,
6 
+so it is using different search engines to provide better results.
7 
+
8 
+Because there is no general search-api which can be used for every
9 
+search-engine, there must be build an adapter between searx and the
10 
+external search-engine. This adapters are stored in the folder
11 
+`*searx/engines* <https://github.com/asciimoo/searx/tree/master/searx/engines>`__,
12 
+and this site is build to make an general documentation about this
13 
+engines
14 
+
15 
+
16 
+.. contents::
17 
+   :depth: 3
18 
+
19 
+general engine configuration
20 
+----------------------------
21 
+
22 
+It is required to tell searx what results can the engine provide. The
23 
+arguments can be inserted in the engine file, or in the settings file
24 
+(normally ``settings.yml``). The arguments in the settings file override
25 
+the one in the engine file.
26 
+
27 
+Really, it is for most options no difference if there are contained in
28 
+the engine-file or in the settings. But there is a standard where to
29 
+place specific arguments by default.
30 
+
31 
+
32 
+engine-file
33 
+~~~~~~~~~~~
34 
+
35 
++---------------------+-----------+-----------------------------------------+
36 
+| argument            | type      | information                             |
37 
++=====================+===========+=========================================+
38 
+| categories          | list      | pages, in which the engine is working   |
39 
++---------------------+-----------+-----------------------------------------+
40 
+| paging              | boolean   | support multible pages                  |
41 
++---------------------+-----------+-----------------------------------------+
42 
+| language\_support   | boolean   | support language choosing               |
43 
++---------------------+-----------+-----------------------------------------+
44 
+
45 
+settings.yml
46 
+~~~~~~~~~~~~
47 
+
48 
++------------+----------+-----------------------------------------------+
49 
+| argument   | type     | information                                   |
50 
++============+==========+===============================================+
51 
+| name       | string   | name of search-engine                         |
52 
++------------+----------+-----------------------------------------------+
53 
+| engine     | string   | name of searx-engine (filename without .py)   |
54 
++------------+----------+-----------------------------------------------+
55 
+| shortcut   | string   | shortcut of search-engine                     |
56 
++------------+----------+-----------------------------------------------+
57 
+| timeout    | string   | specific timeout for search-engine            |
58 
++------------+----------+-----------------------------------------------+
59 
+
60 
+overrides
61 
+~~~~~~~~~
62 
+
63 
+There are some options, with have default values in the engine, but are
64 
+often overwritten by the settings. If the option is assigned in the
65 
+engine-file with ``None`` it has to be redefined in the settings,
66 
+otherwise searx is not starting with that engine.
67 
+
68 
+The naming of that overrides can be wathever you want. But we recommend
69 
+the using of already used overrides if possible:
70 
+
71 
++-----------------------+----------+--------------------------------------------------------------+
72 
+| argument              | type     | information                                                  |
73 
++=======================+==========+==============================================================+
74 
+| base\_url             | string   | base-url, can be overwrite to use same engine on other url   |
75 
++-----------------------+----------+--------------------------------------------------------------+
76 
+| number\_of\_results   | int      | maximum number of results per request                        |
77 
++-----------------------+----------+--------------------------------------------------------------+
78 
+| language              | string   | ISO code of language and country like en\_US                 |
79 
++-----------------------+----------+--------------------------------------------------------------+
80 
+| api\_key              | string   | api-key if required by engine                                |
81 
++-----------------------+----------+--------------------------------------------------------------+
82 
+
83 
+example-code
84 
+~~~~~~~~~~~~
85 
+
86 
+.. code:: python
87 
+
88 
+    # engine dependent config
89 
+    categories = ['general']
90 
+    paging = True
91 
+    language_support = True
92 
+
93 
+doing request
94 
+-------------
95 
+
96 
+To perform a search you have to specific at least a url on which the
97 
+request is performing
98 
+
99 
+passed arguments
100 
+~~~~~~~~~~~~~~~~
101 
+
102 
+This arguments can be used to calculate the search-query. Furthermore,
103 
+some of that parameters are filled with default values which can be
104 
+changed for special purpose.
105 
+
106 
++----------------------+------------+------------------------------------------------------------------------+
107 
+| argument             | type       | default-value, informations                                            |
108 
++======================+============+========================================================================+
109 
+| url                  | string     | ``''``                                                                 |
110 
++----------------------+------------+------------------------------------------------------------------------+
111 
+| method               | string     | ``'GET'``                                                              |
112 
++----------------------+------------+------------------------------------------------------------------------+
113 
+| headers              | set        | ``{}``                                                                 |
114 
++----------------------+------------+------------------------------------------------------------------------+
115 
+| data                 | set        | ``{}``                                                                 |
116 
++----------------------+------------+------------------------------------------------------------------------+
117 
+| cookies              | set        | ``{}``                                                                 |
118 
++----------------------+------------+------------------------------------------------------------------------+
119 
+| verify               | boolean    | ``True``                                                               |
120 
++----------------------+------------+------------------------------------------------------------------------+
121 
+| headers.User-Agent   | string     | a random User-Agent                                                    |
122 
++----------------------+------------+------------------------------------------------------------------------+
123 
+| category             | string     | current category, like ``'general'``                                   |
124 
++----------------------+------------+------------------------------------------------------------------------+
125 
+| started              | datetime   | current date-time                                                      |
126 
++----------------------+------------+------------------------------------------------------------------------+
127 
+| pageno               | int        | current pagenumber                                                     |
128 
++----------------------+------------+------------------------------------------------------------------------+
129 
+| language             | string     | specific language code like ``'en_US'``, or ``'all'`` if unspecified   |
130 
++----------------------+------------+------------------------------------------------------------------------+
131 
+
132 
+parsed arguments
133 
+~~~~~~~~~~~~~~~~
134 
+
135 
+The function ``def request(query, params):`` is always returning the
136 
+``params`` variable back. Inside searx, the following paramters can be
137 
+used to specific a search-request:
138 
+
139 
++------------+-----------+----------------------------------------------------------+
140 
+| argument   | type      | information                                              |
141 
++============+===========+==========================================================+
142 
+| url        | string    | requested url                                            |
143 
++------------+-----------+----------------------------------------------------------+
144 
+| method     | string    | HTTP request methode                                     |
145 
++------------+-----------+----------------------------------------------------------+
146 
+| headers    | set       | HTTP header informations                                 |
147 
++------------+-----------+----------------------------------------------------------+
148 
+| data       | set       | HTTP data informations (parsed if ``method != 'GET'``)   |
149 
++------------+-----------+----------------------------------------------------------+
150 
+| cookies    | set       | HTTP cookies                                             |
151 
++------------+-----------+----------------------------------------------------------+
152 
+| verify     | boolean   | Performing SSL-Validity check                            |
153 
++------------+-----------+----------------------------------------------------------+
154 
+
155 
+example-code
156 
+~~~~~~~~~~~~
157 
+
158 
+.. code:: python
159 
+
160 
+    # search-url
161 
+    base_url = 'https://example.com/'
162 
+    search_string = 'search?{query}&page={page}'
163 
+
164 
+    # do search-request
165 
+    def request(query, params):
166 
+        search_path = search_string.format(
167 
+            query=urlencode({'q': query}),
168 
+            page=params['pageno'])
169 
+
170 
+        params['url'] = base_url + search_path
171 
+
172 
+        return params
173 
+
174 
+returning results
175 
+-----------------
176 
+
177 
+Searx has the possiblity to return results in different media-types.
178 
+Currently the following media-types are supported:
179 
+
180 
+-  default
181 
+-  images
182 
+-  videos
183 
+-  torrent
184 
+-  map
185 
+
186 
+to set another media-type as default, you must set the parameter
187 
+``template`` to the required type.
188 
+
189 
+default
190 
+~~~~~~~
191 
+
192 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
193 
+| result-parameter   | information                                                                                                                        |
194 
++====================+====================================================================================================================================+
195 
+| url                | string, which is representing the url of the result                                                                                |
196 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
197 
+| title              | string, which is representing the title of the result                                                                              |
198 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
199 
+| content            | string, which is giving a general result-text                                                                                      |
200 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
201 
+| publishedDate      | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published   |
202 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
203 
+
204 
+images
205 
+~~~~~~
206 
+
207 
+to use this template, the parameter
208 
+
209 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
210 
+| result-parameter   | information                                                                                                                                               |
211 
++====================+===========================================================================================================================================================+
212 
+| template           | is set to ``images.html``                                                                                                                                 |
213 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
214 
+| url                | string, which is representing the url to the result site                                                                                                  |
215 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
216 
+| title              | string, which is representing the title of the result *(partly implemented)*                                                                              |
217 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
218 
+| content            | *(partly implemented)*                                                                                                                                    |
219 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
220 
+| publishedDate      | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published *(partly implemented)*   |
221 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
222 
+| img\_src           | string, which is representing the url to the result image                                                                                                 |
223 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
224 
+| thumbnail\_src     | string, which is representing the url to a small-preview image                                                                                            |
225 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
226 
+
227 
+videos
228 
+~~~~~~
229 
+
230 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
231 
+| result-parameter   | information                                                                                                                        |
232 
++====================+====================================================================================================================================+
233 
+| template           | is set to ``videos.html``                                                                                                          |
234 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
235 
+| url                | string, which is representing the url of the result                                                                                |
236 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
237 
+| title              | string, which is representing the title of the result                                                                              |
238 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
239 
+| content            | *(not implemented yet)*                                                                                                            |
240 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
241 
+| publishedDate      | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published   |
242 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
243 
+| thumbnail          | string, which is representing the url to a small-preview image                                                                     |
244 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
245 
+
246 
+torrent
247 
+~~~~~~~
248 
+
249 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
250 
+| result-parameter | information                                                                                                                                           |
251 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
252 
+| template         | is set to ```torrent.html```                                                                                                                          |
253 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
254 
+| url              | string, which is representing the url of the result                                                                                                   |
255 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
256 
+| title            | string, which is representing the title of the result                                                                                                 |
257 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
258 
+| content          | string, which is giving a general result-text                                                                                                         |
259 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
260 
+| publishedDate    | [datetime.datetime](https://docs.python.org/2/library/datetime.html#datetime-objects), represent when the result is published _(not implemented yet)_ |
261 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
262 
+| seed             | int, number of seeder                                                                                                                                 |
263 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
264 
+| leech            | int, number of leecher                                                                                                                                |
265 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
266 
+| filesize         | int, size of file in bytes                                                                                                                            |
267 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
268 
+| files            | int, number of files                                                                                                                                  |
269 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
270 
+| magnetlink       | string, which is the [magnetlink](https://en.wikipedia.org/wiki/Magnet_URI_scheme) of the result                                                      |
271 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
272 
+| torrentfile      | string, which is the torrentfile of the result                                                                                                        |
273 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
274 
+
275 
+
276 
+map
277 
+~~~
278 
+
279 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
280 
+| result-parameter        | information                                                                                                                        |
281 
++=========================+====================================================================================================================================+
282 
+| url                     | string, which is representing the url of the result                                                                                |
283 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
284 
+| title                   | string, which is representing the title of the result                                                                              |
285 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
286 
+| content                 | string, which is giving a general result-text                                                                                      |
287 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
288 
+| publishedDate           | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published   |
289 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
290 
+| latitude                | latitude of result (in decimal format)                                                                                             |
291 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
292 
+| longitude               | longitude of result (in decimal format)                                                                                            |
293 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
294 
+| boundingbox             | boundingbox of result (array of 4. values ``[lat-min, lat-max, lon-min, lon-max]``)                                                |
295 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
296 
+| geojson                 | geojson of result (http://geojson.org)                                                                                             |
297 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
298 
+| osm.type                | type of osm-object (if OSM-Result)                                                                                                 |
299 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
300 
+| osm.id                  | id of osm-object (if OSM-Result)                                                                                                   |
301 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
302 
+| address.name            | name of object                                                                                                                     |
303 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
304 
+| address.road            | street adress of object                                                                                                            |
305 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
306 
+| address.house\_number   | house number of object                                                                                                             |
307 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
308 
+| address.locality        | city, place of object                                                                                                              |
309 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
310 
+| address.postcode        | postcode of object                                                                                                                 |
311 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
312 
+| address.country         | country of object                                                                                                                  |
313 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
314 
+

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_sources/index.txt Zobrazit soubor 

@@ -34,6 +34,7 @@ Developer documentation
34 34
35 35 
    dev/contribution_guide
36 36 
    dev/install/installation
37 
+   dev/engine_overview
37 38 
    dev/search_api
38 39 
    dev/plugins
39 40 
    dev/translation

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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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+
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+
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+<html xmlns="http://www.w3.org/1999/xhtml">
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+  <head>
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+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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+
9 
+    <title>Engine overview &mdash; searx 0.8.0 documentation</title>
10 
+
11 
+    <link rel="stylesheet" href="../_static/style.css" type="text/css" />
12 
+    <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
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+
14 
+    <script type="text/javascript">
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+      var DOCUMENTATION_OPTIONS = {
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+        URL_ROOT:    '../',
17 
+        VERSION:     '0.8.0',
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+        COLLAPSE_INDEX: false,
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+        FILE_SUFFIX: '.html',
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+        HAS_SOURCE:  true
21 
+      };
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+    </script>
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+    <script type="text/javascript" src="../_static/jquery.js"></script>
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+    <script type="text/javascript" src="../_static/underscore.js"></script>
25 
+    <script type="text/javascript" src="../_static/doctools.js"></script>
26 
+    <link rel="top" title="searx 0.8.0 documentation" href="../index.html" />
27 
+    <link rel="next" title="Search API" href="search_api.html" />
28 
+    <link rel="prev" title="Installation" href="install/installation.html" />
29 
+
30 
+
31 
+  <link media="only screen and (max-device-width: 480px)" href="../_static/small_flask.css" type= "text/css" rel="stylesheet" />
32 
+  <meta name="viewport" content="width=device-width, initial-scale=0.9, maximum-scale=0.9">
33 
+
34 
+  </head>
35 
+  <body role="document">
36 
+
37 
+    <div class="document">
38 
+      <div class="documentwrapper">
39 
+        <div class="bodywrapper">
40 
+          <div class="body" role="main">
41 
+
42 
+  <div class="section" id="engine-overview">
43 
+<h1><a class="toc-backref" href="#id2">Engine overview</a><a class="headerlink" href="#engine-overview" title="Permalink to this headline">¶</a></h1>
44 
+<p>searx is a <a class="reference external" href="https://en.wikipedia.org/wiki/Metasearch_engine">metasearch-engine</a>,
45 
+so it is using different search engines to provide better results.</p>
46 
+<p>Because there is no general search-api which can be used for every
47 
+search-engine, there must be build an adapter between searx and the
48 
+external search-engine. This adapters are stored in the folder
49 
+<a class="reference external" href="https://github.com/asciimoo/searx/tree/master/searx/engines">*searx/engines*</a>,
50 
+and this site is build to make an general documentation about this
51 
+engines</p>
52 
+<div class="contents topic" id="contents">
53 
+<p class="topic-title first">Contents</p>
54 
+<ul class="simple">
55 
+<li><a class="reference internal" href="#engine-overview" id="id2">Engine overview</a><ul>
56 
+<li><a class="reference internal" href="#general-engine-configuration" id="id3">general engine configuration</a><ul>
57 
+<li><a class="reference internal" href="#engine-file" id="id4">engine-file</a></li>
58 
+<li><a class="reference internal" href="#settings-yml" id="id5">settings.yml</a></li>
59 
+<li><a class="reference internal" href="#overrides" id="id6">overrides</a></li>
60 
+<li><a class="reference internal" href="#example-code" id="id7">example-code</a></li>
61 
+</ul>
62 
+</li>
63 
+<li><a class="reference internal" href="#doing-request" id="id8">doing request</a><ul>
64 
+<li><a class="reference internal" href="#passed-arguments" id="id9">passed arguments</a></li>
65 
+<li><a class="reference internal" href="#parsed-arguments" id="id10">parsed arguments</a></li>
66 
+<li><a class="reference internal" href="#id1" id="id11">example-code</a></li>
67 
+</ul>
68 
+</li>
69 
+<li><a class="reference internal" href="#returning-results" id="id12">returning results</a><ul>
70 
+<li><a class="reference internal" href="#default" id="id13">default</a></li>
71 
+<li><a class="reference internal" href="#images" id="id14">images</a></li>
72 
+<li><a class="reference internal" href="#videos" id="id15">videos</a></li>
73 
+<li><a class="reference internal" href="#torrent" id="id16">torrent</a></li>
74 
+<li><a class="reference internal" href="#map" id="id17">map</a></li>
75 
+</ul>
76 
+</li>
77 
+</ul>
78 
+</li>
79 
+</ul>
80 
+</div>
81 
+<div class="section" id="general-engine-configuration">
82 
+<h2><a class="toc-backref" href="#id3">general engine configuration</a><a class="headerlink" href="#general-engine-configuration" title="Permalink to this headline">¶</a></h2>
83 
+<p>It is required to tell searx what results can the engine provide. The
84 
+arguments can be inserted in the engine file, or in the settings file
85 
+(normally <code class="docutils literal"><span class="pre">settings.yml</span></code>). The arguments in the settings file override
86 
+the one in the engine file.</p>
87 
+<p>Really, it is for most options no difference if there are contained in
88 
+the engine-file or in the settings. But there is a standard where to
89 
+place specific arguments by default.</p>
90 
+<div class="section" id="engine-file">
91 
+<h3><a class="toc-backref" href="#id4">engine-file</a><a class="headerlink" href="#engine-file" title="Permalink to this headline">¶</a></h3>
92 
+<table border="1" class="docutils">
93 
+<colgroup>
94 
+<col width="29%" />
95 
+<col width="15%" />
96 
+<col width="56%" />
97 
+</colgroup>
98 
+<thead valign="bottom">
99 
+<tr class="row-odd"><th class="head">argument</th>
100 
+<th class="head">type</th>
101 
+<th class="head">information</th>
102 
+</tr>
103 
+</thead>
104 
+<tbody valign="top">
105 
+<tr class="row-even"><td>categories</td>
106 
+<td>list</td>
107 
+<td>pages, in which the engine is working</td>
108 
+</tr>
109 
+<tr class="row-odd"><td>paging</td>
110 
+<td>boolean</td>
111 
+<td>support multible pages</td>
112 
+</tr>
113 
+<tr class="row-even"><td>language_support</td>
114 
+<td>boolean</td>
115 
+<td>support language choosing</td>
116 
+</tr>
117 
+</tbody>
118 
+</table>
119 
+</div>
120 
+<div class="section" id="settings-yml">
121 
+<h3><a class="toc-backref" href="#id5">settings.yml</a><a class="headerlink" href="#settings-yml" title="Permalink to this headline">¶</a></h3>
122 
+<table border="1" class="docutils">
123 
+<colgroup>
124 
+<col width="17%" />
125 
+<col width="14%" />
126 
+<col width="68%" />
127 
+</colgroup>
128 
+<thead valign="bottom">
129 
+<tr class="row-odd"><th class="head">argument</th>
130 
+<th class="head">type</th>
131 
+<th class="head">information</th>
132 
+</tr>
133 
+</thead>
134 
+<tbody valign="top">
135 
+<tr class="row-even"><td>name</td>
136 
+<td>string</td>
137 
+<td>name of search-engine</td>
138 
+</tr>
139 
+<tr class="row-odd"><td>engine</td>
140 
+<td>string</td>
141 
+<td>name of searx-engine (filename without .py)</td>
142 
+</tr>
143 
+<tr class="row-even"><td>shortcut</td>
144 
+<td>string</td>
145 
+<td>shortcut of search-engine</td>
146 
+</tr>
147 
+<tr class="row-odd"><td>timeout</td>
148 
+<td>string</td>
149 
+<td>specific timeout for search-engine</td>
150 
+</tr>
151 
+</tbody>
152 
+</table>
153 
+</div>
154 
+<div class="section" id="overrides">
155 
+<h3><a class="toc-backref" href="#id6">overrides</a><a class="headerlink" href="#overrides" title="Permalink to this headline">¶</a></h3>
156 
+<p>There are some options, with have default values in the engine, but are
157 
+often overwritten by the settings. If the option is assigned in the
158 
+engine-file with <code class="docutils literal"><span class="pre">None</span></code> it has to be redefined in the settings,
159 
+otherwise searx is not starting with that engine.</p>
160 
+<p>The naming of that overrides can be wathever you want. But we recommend
161 
+the using of already used overrides if possible:</p>
162 
+<table border="1" class="docutils">
163 
+<colgroup>
164 
+<col width="24%" />
165 
+<col width="11%" />
166 
+<col width="65%" />
167 
+</colgroup>
168 
+<thead valign="bottom">
169 
+<tr class="row-odd"><th class="head">argument</th>
170 
+<th class="head">type</th>
171 
+<th class="head">information</th>
172 
+</tr>
173 
+</thead>
174 
+<tbody valign="top">
175 
+<tr class="row-even"><td>base_url</td>
176 
+<td>string</td>
177 
+<td>base-url, can be overwrite to use same engine on other url</td>
178 
+</tr>
179 
+<tr class="row-odd"><td>number_of_results</td>
180 
+<td>int</td>
181 
+<td>maximum number of results per request</td>
182 
+</tr>
183 
+<tr class="row-even"><td>language</td>
184 
+<td>string</td>
185 
+<td>ISO code of language and country like en_US</td>
186 
+</tr>
187 
+<tr class="row-odd"><td>api_key</td>
188 
+<td>string</td>
189 
+<td>api-key if required by engine</td>
190 
+</tr>
191 
+</tbody>
192 
+</table>
193 
+</div>
194 
+<div class="section" id="example-code">
195 
+<h3><a class="toc-backref" href="#id7">example-code</a><a class="headerlink" href="#example-code" title="Permalink to this headline">¶</a></h3>
196 
+<div class="code python highlight-python"><div class="highlight"><pre><span class="c"># engine dependent config</span>
197 
+<span class="n">categories</span> <span class="o">=</span> <span class="p">[</span><span class="s">&#39;general&#39;</span><span class="p">]</span>
198 
+<span class="n">paging</span> <span class="o">=</span> <span class="bp">True</span>
199 
+<span class="n">language_support</span> <span class="o">=</span> <span class="bp">True</span>
200 
+</pre></div>
201 
+</div>
202 
+</div>
203 
+</div>
204 
+<div class="section" id="doing-request">
205 
+<h2><a class="toc-backref" href="#id8">doing request</a><a class="headerlink" href="#doing-request" title="Permalink to this headline">¶</a></h2>
206 
+<p>To perform a search you have to specific at least a url on which the
207 
+request is performing</p>
208 
+<div class="section" id="passed-arguments">
209 
+<h3><a class="toc-backref" href="#id9">passed arguments</a><a class="headerlink" href="#passed-arguments" title="Permalink to this headline">¶</a></h3>
210 
+<p>This arguments can be used to calculate the search-query. Furthermore,
211 
+some of that parameters are filled with default values which can be
212 
+changed for special purpose.</p>
213 
+<table border="1" class="docutils">
214 
+<colgroup>
215 
+<col width="21%" />
216 
+<col width="11%" />
217 
+<col width="68%" />
218 
+</colgroup>
219 
+<thead valign="bottom">
220 
+<tr class="row-odd"><th class="head">argument</th>
221 
+<th class="head">type</th>
222 
+<th class="head">default-value, informations</th>
223 
+</tr>
224 
+</thead>
225 
+<tbody valign="top">
226 
+<tr class="row-even"><td>url</td>
227 
+<td>string</td>
228 
+<td><code class="docutils literal"><span class="pre">''</span></code></td>
229 
+</tr>
230 
+<tr class="row-odd"><td>method</td>
231 
+<td>string</td>
232 
+<td><code class="docutils literal"><span class="pre">'GET'</span></code></td>
233 
+</tr>
234 
+<tr class="row-even"><td>headers</td>
235 
+<td>set</td>
236 
+<td><code class="docutils literal"><span class="pre">{}</span></code></td>
237 
+</tr>
238 
+<tr class="row-odd"><td>data</td>
239 
+<td>set</td>
240 
+<td><code class="docutils literal"><span class="pre">{}</span></code></td>
241 
+</tr>
242 
+<tr class="row-even"><td>cookies</td>
243 
+<td>set</td>
244 
+<td><code class="docutils literal"><span class="pre">{}</span></code></td>
245 
+</tr>
246 
+<tr class="row-odd"><td>verify</td>
247 
+<td>boolean</td>
248 
+<td><code class="docutils literal"><span class="pre">True</span></code></td>
249 
+</tr>
250 
+<tr class="row-even"><td>headers.User-Agent</td>
251 
+<td>string</td>
252 
+<td>a random User-Agent</td>
253 
+</tr>
254 
+<tr class="row-odd"><td>category</td>
255 
+<td>string</td>
256 
+<td>current category, like <code class="docutils literal"><span class="pre">'general'</span></code></td>
257 
+</tr>
258 
+<tr class="row-even"><td>started</td>
259 
+<td>datetime</td>
260 
+<td>current date-time</td>
261 
+</tr>
262 
+<tr class="row-odd"><td>pageno</td>
263 
+<td>int</td>
264 
+<td>current pagenumber</td>
265 
+</tr>
266 
+<tr class="row-even"><td>language</td>
267 
+<td>string</td>
268 
+<td>specific language code like <code class="docutils literal"><span class="pre">'en_US'</span></code>, or <code class="docutils literal"><span class="pre">'all'</span></code> if unspecified</td>
269 
+</tr>
270 
+</tbody>
271 
+</table>
272 
+</div>
273 
+<div class="section" id="parsed-arguments">
274 
+<h3><a class="toc-backref" href="#id10">parsed arguments</a><a class="headerlink" href="#parsed-arguments" title="Permalink to this headline">¶</a></h3>
275 
+<p>The function <code class="docutils literal"><span class="pre">def</span> <span class="pre">request(query,</span> <span class="pre">params):</span></code> is always returning the
276 
+<code class="docutils literal"><span class="pre">params</span></code> variable back. Inside searx, the following paramters can be
277 
+used to specific a search-request:</p>
278 
+<table border="1" class="docutils">
279 
+<colgroup>
280 
+<col width="15%" />
281 
+<col width="14%" />
282 
+<col width="72%" />
283 
+</colgroup>
284 
+<thead valign="bottom">
285 
+<tr class="row-odd"><th class="head">argument</th>
286 
+<th class="head">type</th>
287 
+<th class="head">information</th>
288 
+</tr>
289 
+</thead>
290 
+<tbody valign="top">
291 
+<tr class="row-even"><td>url</td>
292 
+<td>string</td>
293 
+<td>requested url</td>
294 
+</tr>
295 
+<tr class="row-odd"><td>method</td>
296 
+<td>string</td>
297 
+<td>HTTP request methode</td>
298 
+</tr>
299 
+<tr class="row-even"><td>headers</td>
300 
+<td>set</td>
301 
+<td>HTTP header informations</td>
302 
+</tr>
303 
+<tr class="row-odd"><td>data</td>
304 
+<td>set</td>
305 
+<td>HTTP data informations (parsed if <code class="docutils literal"><span class="pre">method</span> <span class="pre">!=</span> <span class="pre">'GET'</span></code>)</td>
306 
+</tr>
307 
+<tr class="row-even"><td>cookies</td>
308 
+<td>set</td>
309 
+<td>HTTP cookies</td>
310 
+</tr>
311 
+<tr class="row-odd"><td>verify</td>
312 
+<td>boolean</td>
313 
+<td>Performing SSL-Validity check</td>
314 
+</tr>
315 
+</tbody>
316 
+</table>
317 
+</div>
318 
+<div class="section" id="id1">
319 
+<h3><a class="toc-backref" href="#id11">example-code</a><a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3>
320 
+<div class="code python highlight-python"><div class="highlight"><pre><span class="c"># search-url</span>
321 
+<span class="n">base_url</span> <span class="o">=</span> <span class="s">&#39;https://example.com/&#39;</span>
322 
+<span class="n">search_string</span> <span class="o">=</span> <span class="s">&#39;search?{query}&amp;page={page}&#39;</span>
323 
+
324 
+<span class="c"># do search-request</span>
325 
+<span class="k">def</span> <span class="nf">request</span><span class="p">(</span><span class="n">query</span><span class="p">,</span> <span class="n">params</span><span class="p">):</span>
326 
+    <span class="n">search_path</span> <span class="o">=</span> <span class="n">search_string</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
327 
+        <span class="n">query</span><span class="o">=</span><span class="n">urlencode</span><span class="p">({</span><span class="s">&#39;q&#39;</span><span class="p">:</span> <span class="n">query</span><span class="p">}),</span>
328 
+        <span class="n">page</span><span class="o">=</span><span class="n">params</span><span class="p">[</span><span class="s">&#39;pageno&#39;</span><span class="p">])</span>
329 
+
330 
+    <span class="n">params</span><span class="p">[</span><span class="s">&#39;url&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">base_url</span> <span class="o">+</span> <span class="n">search_path</span>
331 
+
332 
+    <span class="k">return</span> <span class="n">params</span>
333 
+</pre></div>
334 
+</div>
335 
+</div>
336 
+</div>
337 
+<div class="section" id="returning-results">
338 
+<h2><a class="toc-backref" href="#id12">returning results</a><a class="headerlink" href="#returning-results" title="Permalink to this headline">¶</a></h2>
339 
+<p>Searx has the possiblity to return results in different media-types.
340 
+Currently the following media-types are supported:</p>
341 
+<ul class="simple">
342 
+<li>default</li>
343 
+<li>images</li>
344 
+<li>videos</li>
345 
+<li>torrent</li>
346 
+<li>map</li>
347 
+</ul>
348 
+<p>to set another media-type as default, you must set the parameter
349 
+<code class="docutils literal"><span class="pre">template</span></code> to the required type.</p>
350 
+<div class="section" id="default">
351 
+<h3><a class="toc-backref" href="#id13">default</a><a class="headerlink" href="#default" title="Permalink to this headline">¶</a></h3>
352 
+<table border="1" class="docutils">
353 
+<colgroup>
354 
+<col width="13%" />
355 
+<col width="87%" />
356 
+</colgroup>
357 
+<thead valign="bottom">
358 
+<tr class="row-odd"><th class="head">result-parameter</th>
359 
+<th class="head">information</th>
360 
+</tr>
361 
+</thead>
362 
+<tbody valign="top">
363 
+<tr class="row-even"><td>url</td>
364 
+<td>string, which is representing the url of the result</td>
365 
+</tr>
366 
+<tr class="row-odd"><td>title</td>
367 
+<td>string, which is representing the title of the result</td>
368 
+</tr>
369 
+<tr class="row-even"><td>content</td>
370 
+<td>string, which is giving a general result-text</td>
371 
+</tr>
372 
+<tr class="row-odd"><td>publishedDate</td>
373 
+<td><a class="reference external" href="https://docs.python.org/2/library/datetime.html#datetime-objects">datetime.datetime</a>, represent when the result is published</td>
374 
+</tr>
375 
+</tbody>
376 
+</table>
377 
+</div>
378 
+<div class="section" id="images">
379 
+<h3><a class="toc-backref" href="#id14">images</a><a class="headerlink" href="#images" title="Permalink to this headline">¶</a></h3>
380 
+<p>to use this template, the parameter</p>
381 
+<table border="1" class="docutils">
382 
+<colgroup>
383 
+<col width="11%" />
384 
+<col width="89%" />
385 
+</colgroup>
386 
+<thead valign="bottom">
387 
+<tr class="row-odd"><th class="head">result-parameter</th>
388 
+<th class="head">information</th>
389 
+</tr>
390 
+</thead>
391 
+<tbody valign="top">
392 
+<tr class="row-even"><td>template</td>
393 
+<td>is set to <code class="docutils literal"><span class="pre">images.html</span></code></td>
394 
+</tr>
395 
+<tr class="row-odd"><td>url</td>
396 
+<td>string, which is representing the url to the result site</td>
397 
+</tr>
398 
+<tr class="row-even"><td>title</td>
399 
+<td>string, which is representing the title of the result <em>(partly implemented)</em></td>
400 
+</tr>
401 
+<tr class="row-odd"><td>content</td>
402 
+<td><em>(partly implemented)</em></td>
403 
+</tr>
404 
+<tr class="row-even"><td>publishedDate</td>
405 
+<td><a class="reference external" href="https://docs.python.org/2/library/datetime.html#datetime-objects">datetime.datetime</a>, represent when the result is published <em>(partly implemented)</em></td>
406 
+</tr>
407 
+<tr class="row-odd"><td>img_src</td>
408 
+<td>string, which is representing the url to the result image</td>
409 
+</tr>
410 
+<tr class="row-even"><td>thumbnail_src</td>
411 
+<td>string, which is representing the url to a small-preview image</td>
412 
+</tr>
413 
+</tbody>
414 
+</table>
415 
+</div>
416 
+<div class="section" id="videos">
417 
+<h3><a class="toc-backref" href="#id15">videos</a><a class="headerlink" href="#videos" title="Permalink to this headline">¶</a></h3>
418 
+<table border="1" class="docutils">
419 
+<colgroup>
420 
+<col width="13%" />
421 
+<col width="87%" />
422 
+</colgroup>
423 
+<thead valign="bottom">
424 
+<tr class="row-odd"><th class="head">result-parameter</th>
425 
+<th class="head">information</th>
426 
+</tr>
427 
+</thead>
428 
+<tbody valign="top">
429 
+<tr class="row-even"><td>template</td>
430 
+<td>is set to <code class="docutils literal"><span class="pre">videos.html</span></code></td>
431 
+</tr>
432 
+<tr class="row-odd"><td>url</td>
433 
+<td>string, which is representing the url of the result</td>
434 
+</tr>
435 
+<tr class="row-even"><td>title</td>
436 
+<td>string, which is representing the title of the result</td>
437 
+</tr>
438 
+<tr class="row-odd"><td>content</td>
439 
+<td><em>(not implemented yet)</em></td>
440 
+</tr>
441 
+<tr class="row-even"><td>publishedDate</td>
442 
+<td><a class="reference external" href="https://docs.python.org/2/library/datetime.html#datetime-objects">datetime.datetime</a>, represent when the result is published</td>
443 
+</tr>
444 
+<tr class="row-odd"><td>thumbnail</td>
445 
+<td>string, which is representing the url to a small-preview image</td>
446 
+</tr>
447 
+</tbody>
448 
+</table>
449 
+</div>
450 
+<div class="section" id="torrent">
451 
+<h3><a class="toc-backref" href="#id16">torrent</a><a class="headerlink" href="#torrent" title="Permalink to this headline">¶</a></h3>
452 
+<table border="1" class="docutils">
453 
+<colgroup>
454 
+<col width="11%" />
455 
+<col width="89%" />
456 
+</colgroup>
457 
+<tbody valign="top">
458 
+<tr class="row-odd"><td>result-parameter</td>
459 
+<td>information</td>
460 
+</tr>
461 
+<tr class="row-even"><td>template</td>
462 
+<td>is set to <code class="docutils literal"><span class="pre">`torrent.html`</span></code></td>
463 
+</tr>
464 
+<tr class="row-odd"><td>url</td>
465 
+<td>string, which is representing the url of the result</td>
466 
+</tr>
467 
+<tr class="row-even"><td>title</td>
468 
+<td>string, which is representing the title of the result</td>
469 
+</tr>
470 
+<tr class="row-odd"><td>content</td>
471 
+<td>string, which is giving a general result-text</td>
472 
+</tr>
473 
+<tr class="row-even"><td>publishedDate</td>
474 
+<td>[datetime.datetime](<a class="reference external" href="https://docs.python.org/2/library/datetime.html#datetime-objects">https://docs.python.org/2/library/datetime.html#datetime-objects</a>), represent when the result is published _(not implemented yet)_</td>
475 
+</tr>
476 
+<tr class="row-odd"><td>seed</td>
477 
+<td>int, number of seeder</td>
478 
+</tr>
479 
+<tr class="row-even"><td>leech</td>
480 
+<td>int, number of leecher</td>
481 
+</tr>
482 
+<tr class="row-odd"><td>filesize</td>
483 
+<td>int, size of file in bytes</td>
484 
+</tr>
485 
+<tr class="row-even"><td>files</td>
486 
+<td>int, number of files</td>
487 
+</tr>
488 
+<tr class="row-odd"><td>magnetlink</td>
489 
+<td>string, which is the [magnetlink](<a class="reference external" href="https://en.wikipedia.org/wiki/Magnet_URI_scheme">https://en.wikipedia.org/wiki/Magnet_URI_scheme</a>) of the result</td>
490 
+</tr>
491 
+<tr class="row-even"><td>torrentfile</td>
492 
+<td>string, which is the torrentfile of the result</td>
493 
+</tr>
494 
+</tbody>
495 
+</table>
496 
+</div>
497 
+<div class="section" id="map">
498 
+<h3><a class="toc-backref" href="#id17">map</a><a class="headerlink" href="#map" title="Permalink to this headline">¶</a></h3>
499 
+<table border="1" class="docutils">
500 
+<colgroup>
501 
+<col width="16%" />
502 
+<col width="84%" />
503 
+</colgroup>
504 
+<thead valign="bottom">
505 
+<tr class="row-odd"><th class="head">result-parameter</th>
506 
+<th class="head">information</th>
507 
+</tr>
508 
+</thead>
509 
+<tbody valign="top">
510 
+<tr class="row-even"><td>url</td>
511 
+<td>string, which is representing the url of the result</td>
512 
+</tr>
513 
+<tr class="row-odd"><td>title</td>
514 
+<td>string, which is representing the title of the result</td>
515 
+</tr>
516 
+<tr class="row-even"><td>content</td>
517 
+<td>string, which is giving a general result-text</td>
518 
+</tr>
519 
+<tr class="row-odd"><td>publishedDate</td>
520 
+<td><a class="reference external" href="https://docs.python.org/2/library/datetime.html#datetime-objects">datetime.datetime</a>, represent when the result is published</td>
521 
+</tr>
522 
+<tr class="row-even"><td>latitude</td>
523 
+<td>latitude of result (in decimal format)</td>
524 
+</tr>
525 
+<tr class="row-odd"><td>longitude</td>
526 
+<td>longitude of result (in decimal format)</td>
527 
+</tr>
528 
+<tr class="row-even"><td>boundingbox</td>
529 
+<td>boundingbox of result (array of 4. values <code class="docutils literal"><span class="pre">[lat-min,</span> <span class="pre">lat-max,</span> <span class="pre">lon-min,</span> <span class="pre">lon-max]</span></code>)</td>
530 
+</tr>
531 
+<tr class="row-odd"><td>geojson</td>
532 
+<td>geojson of result (<a class="reference external" href="http://geojson.org">http://geojson.org</a>)</td>
533 
+</tr>
534 
+<tr class="row-even"><td>osm.type</td>
535 
+<td>type of osm-object (if OSM-Result)</td>
536 
+</tr>
537 
+<tr class="row-odd"><td>osm.id</td>
538 
+<td>id of osm-object (if OSM-Result)</td>
539 
+</tr>
540 
+<tr class="row-even"><td>address.name</td>
541 
+<td>name of object</td>
542 
+</tr>
543 
+<tr class="row-odd"><td>address.road</td>
544 
+<td>street adress of object</td>
545 
+</tr>
546 
+<tr class="row-even"><td>address.house_number</td>
547 
+<td>house number of object</td>
548 
+</tr>
549 
+<tr class="row-odd"><td>address.locality</td>
550 
+<td>city, place of object</td>
551 
+</tr>
552 
+<tr class="row-even"><td>address.postcode</td>
553 
+<td>postcode of object</td>
554 
+</tr>
555 
+<tr class="row-odd"><td>address.country</td>
556 
+<td>country of object</td>
557 
+</tr>
558 
+</tbody>
559 
+</table>
560 
+</div>
561 
+</div>
562 
+</div>
563 
+
564 
+
565 
+          </div>
566 
+        </div>
567 
+      </div>
568 
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
569 
+        <div class="sphinxsidebarwrapper"><div class="sidebar_container body">
570 
+<h1>Searx</h1>
571 
+<ul>
572 
+    <li><a href="../index.html">Home</a></li>
573 
+    <li><a href="https://github.com/asciimoo/searx">Source</a></li>
574 
+    <li><a href="https://github.com/asciimoo/searx/wiki">Wiki</a></li>
575 
+    <li><a href="https://github.com/asciimoo/searx/wiki/Searx-instances">Public instances</a></li>
576 
+</ul>
577 
+<hr />
578 
+<ul>
579 
+    <li><a href="https://twitter.com/Searx_engine">Twitter</a></li>
580 
+    <li><a href="https://flattr.com/submit/auto?user_id=asciimoo&url=https://github.com/asciimoo/searx&title=searx&language=&tags=github&category=software">Flattr</a></li>
581 
+    <li><a href="https://gratipay.com/searx">Gratipay</a></li>
582 
+</ul>
583 
+</div>
584 
+        </div>
585 
+      </div>
586 
+      <div class="clearer"></div>
587 
+    </div>
588 
+    <div class="footer">
589 
+      &copy; Copyright 2015, Adam Tauber.
590 
+    </div>
591 
+  </body>
592 
+</html>

+ 314
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docs/dev/engine_overview.rst Zobrazit soubor 

@@ -0,0 +1,314 @@
1 
+Engine overview
2 
+===============
3 
+
4 
+
5 
+searx is a `metasearch-engine <https://en.wikipedia.org/wiki/Metasearch_engine>`__,
6 
+so it is using different search engines to provide better results.
7 
+
8 
+Because there is no general search-api which can be used for every
9 
+search-engine, there must be build an adapter between searx and the
10 
+external search-engine. This adapters are stored in the folder
11 
+`*searx/engines* <https://github.com/asciimoo/searx/tree/master/searx/engines>`__,
12 
+and this site is build to make an general documentation about this
13 
+engines
14 
+
15 
+
16 
+.. contents::
17 
+   :depth: 3
18 
+
19 
+general engine configuration
20 
+----------------------------
21 
+
22 
+It is required to tell searx what results can the engine provide. The
23 
+arguments can be inserted in the engine file, or in the settings file
24 
+(normally ``settings.yml``). The arguments in the settings file override
25 
+the one in the engine file.
26 
+
27 
+Really, it is for most options no difference if there are contained in
28 
+the engine-file or in the settings. But there is a standard where to
29 
+place specific arguments by default.
30 
+
31 
+
32 
+engine-file
33 
+~~~~~~~~~~~
34 
+
35 
++---------------------+-----------+-----------------------------------------+
36 
+| argument            | type      | information                             |
37 
++=====================+===========+=========================================+
38 
+| categories          | list      | pages, in which the engine is working   |
39 
++---------------------+-----------+-----------------------------------------+
40 
+| paging              | boolean   | support multible pages                  |
41 
++---------------------+-----------+-----------------------------------------+
42 
+| language\_support   | boolean   | support language choosing               |
43 
++---------------------+-----------+-----------------------------------------+
44 
+
45 
+settings.yml
46 
+~~~~~~~~~~~~
47 
+
48 
++------------+----------+-----------------------------------------------+
49 
+| argument   | type     | information                                   |
50 
++============+==========+===============================================+
51 
+| name       | string   | name of search-engine                         |
52 
++------------+----------+-----------------------------------------------+
53 
+| engine     | string   | name of searx-engine (filename without .py)   |
54 
++------------+----------+-----------------------------------------------+
55 
+| shortcut   | string   | shortcut of search-engine                     |
56 
++------------+----------+-----------------------------------------------+
57 
+| timeout    | string   | specific timeout for search-engine            |
58 
++------------+----------+-----------------------------------------------+
59 
+
60 
+overrides
61 
+~~~~~~~~~
62 
+
63 
+There are some options, with have default values in the engine, but are
64 
+often overwritten by the settings. If the option is assigned in the
65 
+engine-file with ``None`` it has to be redefined in the settings,
66 
+otherwise searx is not starting with that engine.
67 
+
68 
+The naming of that overrides can be wathever you want. But we recommend
69 
+the using of already used overrides if possible:
70 
+
71 
++-----------------------+----------+--------------------------------------------------------------+
72 
+| argument              | type     | information                                                  |
73 
++=======================+==========+==============================================================+
74 
+| base\_url             | string   | base-url, can be overwrite to use same engine on other url   |
75 
++-----------------------+----------+--------------------------------------------------------------+
76 
+| number\_of\_results   | int      | maximum number of results per request                        |
77 
++-----------------------+----------+--------------------------------------------------------------+
78 
+| language              | string   | ISO code of language and country like en\_US                 |
79 
++-----------------------+----------+--------------------------------------------------------------+
80 
+| api\_key              | string   | api-key if required by engine                                |
81 
++-----------------------+----------+--------------------------------------------------------------+
82 
+
83 
+example-code
84 
+~~~~~~~~~~~~
85 
+
86 
+.. code:: python
87 
+
88 
+    # engine dependent config
89 
+    categories = ['general']
90 
+    paging = True
91 
+    language_support = True
92 
+
93 
+doing request
94 
+-------------
95 
+
96 
+To perform a search you have to specific at least a url on which the
97 
+request is performing
98 
+
99 
+passed arguments
100 
+~~~~~~~~~~~~~~~~
101 
+
102 
+This arguments can be used to calculate the search-query. Furthermore,
103 
+some of that parameters are filled with default values which can be
104 
+changed for special purpose.
105 
+
106 
++----------------------+------------+------------------------------------------------------------------------+
107 
+| argument             | type       | default-value, informations                                            |
108 
++======================+============+========================================================================+
109 
+| url                  | string     | ``''``                                                                 |
110 
++----------------------+------------+------------------------------------------------------------------------+
111 
+| method               | string     | ``'GET'``                                                              |
112 
++----------------------+------------+------------------------------------------------------------------------+
113 
+| headers              | set        | ``{}``                                                                 |
114 
++----------------------+------------+------------------------------------------------------------------------+
115 
+| data                 | set        | ``{}``                                                                 |
116 
++----------------------+------------+------------------------------------------------------------------------+
117 
+| cookies              | set        | ``{}``                                                                 |
118 
++----------------------+------------+------------------------------------------------------------------------+
119 
+| verify               | boolean    | ``True``                                                               |
120 
++----------------------+------------+------------------------------------------------------------------------+
121 
+| headers.User-Agent   | string     | a random User-Agent                                                    |
122 
++----------------------+------------+------------------------------------------------------------------------+
123 
+| category             | string     | current category, like ``'general'``                                   |
124 
++----------------------+------------+------------------------------------------------------------------------+
125 
+| started              | datetime   | current date-time                                                      |
126 
++----------------------+------------+------------------------------------------------------------------------+
127 
+| pageno               | int        | current pagenumber                                                     |
128 
++----------------------+------------+------------------------------------------------------------------------+
129 
+| language             | string     | specific language code like ``'en_US'``, or ``'all'`` if unspecified   |
130 
++----------------------+------------+------------------------------------------------------------------------+
131 
+
132 
+parsed arguments
133 
+~~~~~~~~~~~~~~~~
134 
+
135 
+The function ``def request(query, params):`` is always returning the
136 
+``params`` variable back. Inside searx, the following paramters can be
137 
+used to specific a search-request:
138 
+
139 
++------------+-----------+----------------------------------------------------------+
140 
+| argument   | type      | information                                              |
141 
++============+===========+==========================================================+
142 
+| url        | string    | requested url                                            |
143 
++------------+-----------+----------------------------------------------------------+
144 
+| method     | string    | HTTP request methode                                     |
145 
++------------+-----------+----------------------------------------------------------+
146 
+| headers    | set       | HTTP header informations                                 |
147 
++------------+-----------+----------------------------------------------------------+
148 
+| data       | set       | HTTP data informations (parsed if ``method != 'GET'``)   |
149 
++------------+-----------+----------------------------------------------------------+
150 
+| cookies    | set       | HTTP cookies                                             |
151 
++------------+-----------+----------------------------------------------------------+
152 
+| verify     | boolean   | Performing SSL-Validity check                            |
153 
++------------+-----------+----------------------------------------------------------+
154 
+
155 
+example-code
156 
+~~~~~~~~~~~~
157 
+
158 
+.. code:: python
159 
+
160 
+    # search-url
161 
+    base_url = 'https://example.com/'
162 
+    search_string = 'search?{query}&page={page}'
163 
+
164 
+    # do search-request
165 
+    def request(query, params):
166 
+        search_path = search_string.format(
167 
+            query=urlencode({'q': query}),
168 
+            page=params['pageno'])
169 
+
170 
+        params['url'] = base_url + search_path
171 
+
172 
+        return params
173 
+
174 
+returning results
175 
+-----------------
176 
+
177 
+Searx has the possiblity to return results in different media-types.
178 
+Currently the following media-types are supported:
179 
+
180 
+-  default
181 
+-  images
182 
+-  videos
183 
+-  torrent
184 
+-  map
185 
+
186 
+to set another media-type as default, you must set the parameter
187 
+``template`` to the required type.
188 
+
189 
+default
190 
+~~~~~~~
191 
+
192 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
193 
+| result-parameter   | information                                                                                                                        |
194 
++====================+====================================================================================================================================+
195 
+| url                | string, which is representing the url of the result                                                                                |
196 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
197 
+| title              | string, which is representing the title of the result                                                                              |
198 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
199 
+| content            | string, which is giving a general result-text                                                                                      |
200 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
201 
+| publishedDate      | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published   |
202 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
203 
+
204 
+images
205 
+~~~~~~
206 
+
207 
+to use this template, the parameter
208 
+
209 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
210 
+| result-parameter   | information                                                                                                                                               |
211 
++====================+===========================================================================================================================================================+
212 
+| template           | is set to ``images.html``                                                                                                                                 |
213 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
214 
+| url                | string, which is representing the url to the result site                                                                                                  |
215 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
216 
+| title              | string, which is representing the title of the result *(partly implemented)*                                                                              |
217 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
218 
+| content            | *(partly implemented)*                                                                                                                                    |
219 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
220 
+| publishedDate      | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published *(partly implemented)*   |
221 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
222 
+| img\_src           | string, which is representing the url to the result image                                                                                                 |
223 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
224 
+| thumbnail\_src     | string, which is representing the url to a small-preview image                                                                                            |
225 
++--------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------+
226 
+
227 
+videos
228 
+~~~~~~
229 
+
230 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
231 
+| result-parameter   | information                                                                                                                        |
232 
++====================+====================================================================================================================================+
233 
+| template           | is set to ``videos.html``                                                                                                          |
234 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
235 
+| url                | string, which is representing the url of the result                                                                                |
236 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
237 
+| title              | string, which is representing the title of the result                                                                              |
238 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
239 
+| content            | *(not implemented yet)*                                                                                                            |
240 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
241 
+| publishedDate      | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published   |
242 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
243 
+| thumbnail          | string, which is representing the url to a small-preview image                                                                     |
244 
++--------------------+------------------------------------------------------------------------------------------------------------------------------------+
245 
+
246 
+torrent
247 
+~~~~~~~
248 
+
249 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
250 
+| result-parameter | information                                                                                                                                           |
251 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
252 
+| template         | is set to ```torrent.html```                                                                                                                          |
253 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
254 
+| url              | string, which is representing the url of the result                                                                                                   |
255 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
256 
+| title            | string, which is representing the title of the result                                                                                                 |
257 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
258 
+| content          | string, which is giving a general result-text                                                                                                         |
259 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
260 
+| publishedDate    | [datetime.datetime](https://docs.python.org/2/library/datetime.html#datetime-objects), represent when the result is published _(not implemented yet)_ |
261 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
262 
+| seed             | int, number of seeder                                                                                                                                 |
263 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
264 
+| leech            | int, number of leecher                                                                                                                                |
265 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
266 
+| filesize         | int, size of file in bytes                                                                                                                            |
267 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
268 
+| files            | int, number of files                                                                                                                                  |
269 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
270 
+| magnetlink       | string, which is the [magnetlink](https://en.wikipedia.org/wiki/Magnet_URI_scheme) of the result                                                      |
271 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
272 
+| torrentfile      | string, which is the torrentfile of the result                                                                                                        |
273 
++------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------+
274 
+
275 
+
276 
+map
277 
+~~~
278 
+
279 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
280 
+| result-parameter        | information                                                                                                                        |
281 
++=========================+====================================================================================================================================+
282 
+| url                     | string, which is representing the url of the result                                                                                |
283 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
284 
+| title                   | string, which is representing the title of the result                                                                              |
285 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
286 
+| content                 | string, which is giving a general result-text                                                                                      |
287 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
288 
+| publishedDate           | `datetime.datetime <https://docs.python.org/2/library/datetime.html#datetime-objects>`__, represent when the result is published   |
289 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
290 
+| latitude                | latitude of result (in decimal format)                                                                                             |
291 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
292 
+| longitude               | longitude of result (in decimal format)                                                                                            |
293 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
294 
+| boundingbox             | boundingbox of result (array of 4. values ``[lat-min, lat-max, lon-min, lon-max]``)                                                |
295 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
296 
+| geojson                 | geojson of result (http://geojson.org)                                                                                             |
297 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
298 
+| osm.type                | type of osm-object (if OSM-Result)                                                                                                 |
299 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
300 
+| osm.id                  | id of osm-object (if OSM-Result)                                                                                                   |
301 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
302 
+| address.name            | name of object                                                                                                                     |
303 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
304 
+| address.road            | street adress of object                                                                                                            |
305 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
306 
+| address.house\_number   | house number of object                                                                                                             |
307 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
308 
+| address.locality        | city, place of object                                                                                                              |
309 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
310 
+| address.postcode        | postcode of object                                                                                                                 |
311 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
312 
+| address.country         | country of object                                                                                                                  |
313 
++-------------------------+------------------------------------------------------------------------------------------------------------------------------------+
314 
+

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@@ -34,6 +34,7 @@ Developer documentation
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35 35 
    dev/contribution_guide
36 36 
    dev/install/installation
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+   dev/engine_overview
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    dev/search_api
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    dev/plugins
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    dev/translation

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@@ -70,6 +70,7 @@
70 70 
 <ul>
71 71 
 <li class="toctree-l1"><a class="reference internal" href="dev/contribution_guide.html">How to contribute</a></li>
72 72 
 <li class="toctree-l1"><a class="reference internal" href="dev/install/installation.html">Installation</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="dev/engine_overview.html">Engine overview</a></li>
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 <li class="toctree-l1"><a class="reference internal" href="dev/search_api.html">Search API</a></li>
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 <li class="toctree-l1"><a class="reference internal" href="dev/plugins.html">Plugins</a></li>
75 76 
 <li class="toctree-l1"><a class="reference internal" href="dev/translation.html">Translation</a></li>

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