Converts wikilinks ([[wikilink]]) to relative links, including support for GitHub image variant. Absolute links are kept as is (with an automatic label made from the file path part in the URL if label is not given explicitly).

You must not use this extension with markdown.extensions.wikilinks. This extension is designed to provide the functionalities of markdown.extensions.wikilinks with some extra features. Choose either one.

Install

pip install mdx_wikilink_plus

Wikilink syntax

The geneal formats are:

1. Without explicit label: [[wikilink]]
2. With explicit label: [[ link | label ]]
   • only supported for links not images
3. Image: [[image.ext]]
   • supports: .png, .jpg, .jpeg or .gif
4. Image alt text: [[image.ext|alt=alternate text]]

Usage

import markdown then:

text = "[[wikilink]]"
md = markdown.Markdown(extensions=['mdx_wikilink_plus'])
html = md.convert(text)

Quick examples

[[/path/to/file-name]] will become:

<p><a class="wikilink" href="/path/to/file-name">File Name</a></p>

[[/path/to/file name.jpg| alt= alt text]] will become:

<p><img alt="alt text" class="wikilink-image" src="/path/to/file-name.jpg" /></p>

[[https://www.example.com/example-tutorial]] will become:

<p><a class="wikilink" href="https://www.example.com/example-tutorial">Example Tutorial</a></p>

and [[https://www.example.com/?a=b&b=c]] will become:

<p><a class="wikilink" href="https://www.example.com/?a=b&amp;b=c">www.example.com</a></p>

Configuration

The configuration options are:

Config param	Default	Details
base_url	''	Prepended to the file_path part of the URL. A / at the end of the base_url will be handled intelligently.
end_url	''	Appended to the file_path part of the URL. If end_url is given (non-empty), then any / at the end of the file_path part in the URL is removed. If the end_url matches the extension of the file_path part, it will be ignored, for example, if end_url is .html and the wikilink provided is [[/path/to/myfile.html]], then the URL will be /path/to/myfile.html not /path/to/myfile.html.html.
url_whitespace	'-'	Replace all whitespace in the file_path path with this character (string) when building the URL.
url_case	'none'	Choose case in the file_path. Available options: lowercase, uppercase.
label_case	'titlecase'	Choose case of the label. Available options: titlecase, capitalize, none. Capitalize will capitalize the first character only.
html_class	'wikilink'	Set custom HTML classes on the anchor tag. It does not add classes rather it resets any previously set value.
image_class	'wikilink-image'	Set custom HTML classes on the anchor tag. It does not add classes rather it resets any previously set value.
build_url	mdx_wikilink_plus.build_url	A callable that returns the URL string. Default build_url callable

None of the configs apply on absolute URLs except html_class and build_url. (Yes, label_case won't work either)

Configuration through meta data

Configuration can also be passed through metadata (markdown.extensions.meta). Meta-data consists of a series of keywords and values which must be defined at the beginning of a markdown document.

The following example uses recognised metadata parameters:

wiki_base_url: /static/
wiki_end_url: 
wiki_url_whitespace: _
wiki_url_case: lowercase
wiki_label_case: capitalize
wiki_html_class: wiki-link
wiki_image_class: wiki-image

This is the first paragraph of the document.

An example with configuration:

md_configs = {
                'mdx_wikilink_plus': {
                    'base_url': '/static',
                    'end_url': '.html',
                    'url_case': 'lowercase',
                    'html_class': 'a-custom-class',
                    #'build_url': build_url, # A callable
                    # all of the above config params are optional
                },
             }


text = """
[[Page Name]]

[[/path/to/file-name.png|alt=demo image]]

[[/path/to/file name/?a=b&b=c]]
"""


md = markdown.Markdown(extensions=['mdx_wikilink_plus'], extension_configs=md_configs)
print(md.convert(text))

The output will be:

<p><a class="a-custom-class" href="/static/page-name.html">Page Name</a></p>
<p><img alt="demo image" class="wikilink-image" src="/static/path/to/file-name.png" /></p>
<p><a class="a-custom-class" href="/static/path/to/file-name.html?a=b&amp;b=c">File Name</a></p>

!!! info end_url is added at the end of the file-path part in the URL.

---

More examples

More examples are given in the test markdown code which demonstrates defaults with no config, a config, meta and build_url.

With meta (markdown.extensions.meta)

If meta is used it must be added to the start of the markdown. eg:

wiki_base_url: /local
wiki_url_whitespace: _
wiki_url_case: lowercase
wiki_label_case: capitalize
wiki_html_class: wiki-lnk
wiki_image_class: wiki-img

The build_url callable

You can view the default build_url function which can be customized in python.