Unverified Commit dd7e2d91 authored by Waylan Limberg's avatar Waylan Limberg Committed by GitHub
Browse files

Refactor search plugin (#1418)

* Use a web worker in the browser with a fallback (fixes #859 & closes #1396).
* Optionally pre-build search index (fixes #859 & closes #1061).
* Upgrade to lunr.js 2.x (fixes #1319).
* Support search in languages other than English (fixes #826).
* Allow the user to define the word separators (fixes #867).
* Only run searches for queries of length > 2 (fixes #1127).
* Remove dependency on require.js, mustache, etc. (fixes #1218).
* Compress the search index (fixes #1128).
parent 0dce2b2b
......@@ -2,6 +2,5 @@ mkdocs/themes/**/js/highlight.pack.js
mkdocs/themes/**/js/jquery-**.min.js
mkdocs/themes/**/js/bootstrap-**.min.js
mkdocs/themes/**/js/modernizr-**.min.js
mkdocs/contrib/legacy_search/templates/search/require.js
mkdocs/contrib/legacy_search/templates/search/mustache.min.js
mkdocs/contrib/legacy_search/templates/search/lunr.min.js
mkdocs/contrib/search/templates/search/lunr.js
mkdocs/contrib/search/lunr-language/lunr.**.js
......@@ -23,6 +23,30 @@ The current and past members of the MkDocs team.
## Development Version
### Major Additions to Development Version
#### Refactor Search Plugin
The search plugin has been completely refactored to include support for the
following features:
* Use a web worker in the browser with a fallback (#1396).
* Optionally pre-build search index locally (#859 & #1061).
* Upgrade to lunr.js 2.x (#1319).
* Support search in languages other than English (#826).
* Allow the user to define the word separators (#867).
* Only run searches for queries of length > 2 (#1127).
* Remove dependency on require.js (#1218).
* Compress the search index (#1128).
Users can review the [configuration options][search config] available and theme
authors should review how [search and themes] interact.
[search config]: ../user-guide/configuration.md#search
[search and themes]: ../user-guide/custom-themes.md#search_and_themes
### Other Changes and Additions to Development Version
* Expand {sha} and {version} in gh-deploy commit message (#1410).
* Compress `sitemap.xml` (#1130).
* Defer loading JS scripts (#1380).
......
......@@ -445,6 +445,87 @@ plugins: []
**default**: `['search']` (the "search" plugin included with MkDocs).
#### Search
A search plugin is provided by default with MkDocs which uses [lunr.js] as a
search engine. The following config options are available to alter the behavior
of the search plugin:
##### **separator**
A regular expression which matches the characters used as word separators when
building the index. By default whitespace and the hyphen (`-`) are used. To add
the dot (`.`) as a word separator you might do this:
```yaml
plugins:
- search:
separator: '[\s\-\.]+'
```
**default**: `'[\s\-]+'`
##### **lang**
A list of languages to use when building the search index as identified by their
[ISO 639-1] language codes. With [Lunr Languages], the following languages are
supported:
* `da`: Danish
* `du`: Dutch
* `en`: English
* `fi`: Finnish
* `fr`: French
* `de`: German
* `hu`: Hungarian
* `it`: Italian
* `jp`: Japanese
* `no`: Norwegian
* `pt`: Portuguese
* `ro`: Romanian
* `ru`: Russian
* `es`: Spanish
* `sv`: Swedish
* `th`: Thai
* `tr`: Turkish
You may [contribute additional languages].
!!! Warning
While search does support using multiple languages together, it is best not
to add additional languages unless you really need them. Each additional
language adds significant bandwidth requirements and uses more browser
resources. Generally it is best to keep each instance of MkDocs to a single
language.
!!! Note
Lunr Languages does not currently include support for Chinese or other Asian
languages. However, some users have reported decent results using Japanese.
**default**: `['en']`
##### **prebuild_index**
Optionally generates a pre-built index of all pages, which provides some
performance improvements for larger sites. Before enabling, check that the
theme you are using explicitly supports using a prebuilt index (the builtin
themes do). The pre-build script requires that [Node.js] be installed and the
command `node` be on the system path. If this feature is enabled and fails for
any reason, a warning is issued. You may use the `--strict` flag when building
to cause such a failure to raise an error instead.
!!! Note
On smaller sites, using a pre-built index is not recommended as it creates a
significant increase is bandwidth requirements with little to no noticeable
improvement to your users. However, for larger sites (hundreds of pages),
the bandwidth increase is relatively small and your users will notice a
significant improvement in search performance.
**default**: `False`
[custom themes]: custom-themes.md
[variables that are available]: custom-themes.md#template-variables
[pymdk-extensions]: https://python-markdown.github.io/extensions/
......@@ -457,3 +538,7 @@ plugins: []
[styling your docs]: styling-your-docs.md
[extra_css]: #extra_css
[Plugins]: plugins.md
[lunr.js]: http://lunrjs.com/
[ISO 639-1]: https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
[Lunr Languages]: https://github.com/MihaiValentin/lunr-languages#lunr-languages-----
[contribute additional languages]: https://github.com/MihaiValentin/lunr-languages/blob/master/CONTRIBUTING.md
......@@ -319,12 +319,12 @@ And then displayed with this HTML in the custom theme.
## Search and themes
As of MkDocs `0.17` client side search support has been added to MkDocs via the
`search` plugin. A theme needs to provide a few things for the plugin to work
with the theme.
As of MkDocs version *0.17* client side search support has been added to MkDocs
via the `search` plugin. A theme needs to provide a few things for the plugin to
work with the theme.
While the `search` plugin is activated by default, users can disable the plugin
and themes should acount for this. It is recomended that theme templates wrap
and themes should account for this. It is recommended that theme templates wrap
search specific markup with a check for the plugin:
```django
......@@ -339,8 +339,36 @@ The theme would need to implement its own search functionality client-side.
However, with a few settings and the necessary templates, the plugin can provide
a complete functioning client-side search tool based on [lunr.js].
The following options can be set in the [theme's configuration file],
`mkdocs_theme.yml`:
The following HTML needs to be added to the theme so that the provided
JavaScript is able to properly load the search scripts and make relative links
to the search results from the current page.
```django
<script>var base_url = '{{ base_url }}';</script>
```
With properly configured settings, the following HTML in a template will add a
full search implementation to your theme.
```django
<h1 id="search">Search Results</h1>
<form action="search.html">
<input name="q" id="mkdocs-search-query" type="text" >
</form>
<div id="mkdocs-search-results">
Sorry, page not found.
</div>
```
The JavaScript in the plugin works by looking for the specific ID's used in the
above HTML. The form input for the user to type the search query must be
identified with `id="mkdocs-search-query"` and the div where the results will be
placed must be identified with `id="mkdocs-search-results"`.
The plugin supports the following options being set in the [theme's
configuration file], `mkdocs_theme.yml`:
### include_search_page
......@@ -360,54 +388,47 @@ example, the `mkdocs` theme displays results on any page via a modal.
Determines whether the search plugin should only generate a search index or a
complete search solution.
When `search_index_only` is set to `true` or not defined, the search plugin
makes no modifications to the Jinja environment. A complete solution using the
provided index file is the responsability of the theme.
When `search_index_only` is set to `false`, then the search plugin modifies the
Jinja environment by adding its own `templates` directory (with a lower
precedence than the theme) and adds its scripts to the `extra_javascript` config
setting.
The following HTML needs to be added to the theme so that the provided
JavaScript is able to properly load Lunr.js and make relative links to the
search results from the current page.
```django
<script>var base_url = '{{ base_url }}';</script>
When `search_index_only` is set to `true` or not defined, the search plugin
makes no modifications to the Jinja environment. A complete solution using the
provided index file is the responsibility of the theme.
The search index is written to a JSON file at `search/search_index.json` in the
[site_dir]. The JSON object contained within the file may contain up to three
objects.
```json
{
config: {...},
data: [...],
index: {...}
}
```
!!! note
The provided JavaScript will download the search index. For larger
documentation projects this can be a heavy operation. In those cases, it
is suggested that you either use `search_index_only: true` to only include
search on one page or load the JavaScript on an event like a form submit.
The following HTML in a `search/search.html` template will add a full search
implementation to your theme.
```django
<h1 id="search">Search Results</h1>
If present, the `config` object contains the key/value pairs of config options
defined for the plugin in the user's `mkdocs.yml` config file under
`plugings.search`. The `config` object was new in MkDocs version *1.0*.
<form action="search.html">
<input name="q" id="mkdocs-search-query" type="text" >
</form>
The `data` object contains a list of document objects. Each document object is
made up of a `location` (URL), a `title`, and `text` which can be used to create
a search index and/or display search results.
<div id="mkdocs-search-results">
Sorry, page not found.
</div>
```
The JavaScript in the plugin works by looking for the specific ID's used in the
above HTML. The input for the user to type the search query must have the ID
`mkdocs-search-query` and `mkdocs-search-results` is the div where the results
will be placed.
If present, the `index` object contains a pre-built index which offers
performance improvements for larger sites. Note that the pre-built index is only
created if the user explicitly enables the [prebuild_index] config option.
Themes should expect the index to not be present, but can choose to use the
index when it is available. The `index` object was new in MkDocs version *1.0*.
[Jinja2 template]: http://jinja.pocoo.org/docs/dev/
[built-in themes]: https://github.com/mkdocs/mkdocs/tree/master/mkdocs/themes
[theme's configuration file]: #theme-configuration
[lunr.js]: http://lunrjs.com/
[site_dir]: configuration.md#site_dir
[prebuild_index]: configuration.md#prebuild_index
## Packaging Themes
......
/**
* lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 0.7.0
* Copyright (C) 2016 Oliver Nightingale
* MIT Licensed
* @license
*/
!function(){var t=function(e){var n=new t.Index;return n.pipeline.add(t.trimmer,t.stopWordFilter,t.stemmer),e&&e.call(n,n),n};t.version="0.7.0",t.utils={},t.utils.warn=function(t){return function(e){t.console&&console.warn&&console.warn(e)}}(this),t.utils.asString=function(t){return void 0===t||null===t?"":t.toString()},t.EventEmitter=function(){this.events={}},t.EventEmitter.prototype.addListener=function(){var t=Array.prototype.slice.call(arguments),e=t.pop(),n=t;if("function"!=typeof e)throw new TypeError("last argument must be a function");n.forEach(function(t){this.hasHandler(t)||(this.events[t]=[]),this.events[t].push(e)},this)},t.EventEmitter.prototype.removeListener=function(t,e){if(this.hasHandler(t)){var n=this.events[t].indexOf(e);this.events[t].splice(n,1),this.events[t].length||delete this.events[t]}},t.EventEmitter.prototype.emit=function(t){if(this.hasHandler(t)){var e=Array.prototype.slice.call(arguments,1);this.events[t].forEach(function(t){t.apply(void 0,e)})}},t.EventEmitter.prototype.hasHandler=function(t){return t in this.events},t.tokenizer=function(e){return arguments.length&&null!=e&&void 0!=e?Array.isArray(e)?e.map(function(e){return t.utils.asString(e).toLowerCase()}):e.toString().trim().toLowerCase().split(t.tokenizer.seperator):[]},t.tokenizer.seperator=/[\s\-]+/,t.tokenizer.load=function(t){var e=this.registeredFunctions[t];if(!e)throw new Error("Cannot load un-registered function: "+t);return e},t.tokenizer.label="default",t.tokenizer.registeredFunctions={"default":t.tokenizer},t.tokenizer.registerFunction=function(e,n){n in this.registeredFunctions&&t.utils.warn("Overwriting existing tokenizer: "+n),e.label=n,this.registeredFunctions[n]=e},t.Pipeline=function(){this._stack=[]},t.Pipeline.registeredFunctions={},t.Pipeline.registerFunction=function(e,n){n in this.registeredFunctions&&t.utils.warn("Overwriting existing registered function: "+n),e.label=n,t.Pipeline.registeredFunctions[e.label]=e},t.Pipeline.warnIfFunctionNotRegistered=function(e){var n=e.label&&e.label in this.registeredFunctions;n||t.utils.warn("Function is not registered with pipeline. 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<article>
<h3><a href="{{location}}">{{title}}</a></h3>
<p>{{summary}}</p>
</article>
require.config({
baseUrl: base_url + "/search/"
});
require([
'mustache.min',
'lunr.min',
'text!search-results-template.mustache',
'text!search_index.json',
], function (Mustache, lunr, results_template, data) {
"use strict";
function getSearchTerm()
{
var sPageURL = window.location.search.substring(1);
var sURLVariables = sPageURL.split('&');
for (var i = 0; i < sURLVariables.length; i++)
{
var sParameterName = sURLVariables[i].split('=');
if (sParameterName[0] == 'q')
{
return decodeURIComponent(sParameterName[1].replace(/\+/g, '%20'));
}
}
}
var index = lunr(function () {
this.field('title', {boost: 10});
this.field('text');
this.ref('location');