A MkDocs plugin to make the native "search" plugin work locally (file:// protocol).

NOTE: This plugin only works with the Material for MkDocs theme. If you need support for other themes, feel free to create a pull request.

To use the plugin with Material v5 projects:

1. Install the plugin using pip: pip install mkdocs-localsearch
2. Activate the plugin in mkdocs.yml, in addition to the search plugin:

   plugins:
       - search
       - localsearch

3. Make sure that the use_directory_urls setting is set to false in mkdocs.yml to have filenames in the URL (required when using the file:/// protocol).
4. Add a custom_dir entry to the theme section in mkdocs.yml:

   theme:
       name: material
       custom_dir: theme

5. Create a new file, save it in your project dir as theme/main.html, and add the following content:

   {% extends "base.html" %}
   {% block config %}
   {% if "localsearch" in config["plugins"] %}
   <script src="https://unpkg.com/iframe-worker/polyfill"></script>
   <script src="{{ 'search/search_index.js' | url }}"></script>
   {% endif %}
   {% endblock %}

   Note: Don't use the extra_javascript option in mkdocs.yml to add the two scripts above. Scripts referenced via extra_javascript are placed at the bottom of the HTML page, i.e., after the search implementation, which is too late.
6. If your documentation should work offline, i.e., without internet access:
   1. Open this file and save it as iframe-worker.js in your docs_dir.
      Example path: docs/assets/javascripts/iframe-worker.js
   2. Edit theme/main.html and change the following line:

      <script src="https://unpkg.com/iframe-worker/polyfill"></script>

      to this:

      <script src="{{ 'assets/javascripts/iframe-worker.js' | url }}"></script>

7. If your project has a large search index (several MBytes), add the promise_delay setting:

   plugins:
       - search
       - localsearch:
           promise_delay: 100

   A delay of 100 ms worked with a search index of 24 MB (prebuilt index).
   Note that the promise_delay setting has a negative effect on performance (loading time will be increased).

To use the plugin with Material v4 projects:

1. Install version 0.5.0 of the plugin using pip: pip install mkdocs-localsearch==0.5.0
2. Activate the plugin in mkdocs.yml:

   plugins:
       - localsearch

3. Add search_index.js to the extra_javascript section in mkdocs.yml:

   extra_javascript:
       - search/search_index.js

4. Add a custom_dir entry to the theme section in mkdocs.yml:

   theme:
       name: material
       custom_dir: theme

5. Open this file and save it in your project dir as theme/partials/header.html.
6. Edit theme/partials/header.html and change the following line:
   {% if "search" in config["plugins"] %}
   to this:
   {% if "localsearch" in config["plugins"] %}
7. Done!