Generating HTML

To generate highlighted, hyperlinked web pages from source code, run the following command in a shell:

  1. $ agda --html --html-dir={output directory} {root module}

You can change the way in which the code is highlighted by providing your own CSS file instead of the default, included one (use the --css option).

Note

The Agda.css shipped with Agda is located at _${AGDA_DIR_}/html/Agda.css. Since version 2.6.2, the AGDA_DIR is printed by option --print-agda-dir. Thus, you can get hold of the CSS file via cat $(agda --print-agda-dir)/html/Agda.css.

You can also get highlighting for all occurrences of the symbol the mouse pointer is hovering over in the HTML by adding the --highlight-occurrences option. The default behaviour is to only highlight the single symbol under the mouse pointer.

If you’re using Literate Agda with Markdown or reStructedText and you want to highlight your Agda codes with Agda’s HTML backend and render the rest of the content (let’s call it “literate” part for convenience) with some another renderer, you can use the --html-highlight=code option, which makes the Agda compiler:

  • not wrapping the literate part into <a class="Background"> tags

  • not wrapping the generated document with a <html> tag, which means you’ll have to specify the CSS location somewhere else, like <link rel="stylesheet" type="text/css" href="Agda.css">

  • converting <a class="Markup"> tags into <pre class="agda-code"> tags that wrap the complete Agda code block below

  • generating files with extension as-is (i.e. .lagda.md becomes .md, .lagda.rst becomes .rst)

  • for reStructuredText, a .. raw:: html will be inserted before every code blocks

This will affect all the files involved in one compilation, making pure Agda code files rendered without HTML footer/header as well. To use code with literate Agda files and all with pure Agda files, use --html-highlight=auto, which means auto-detection.

Options

--html-dir={DIR}

Changes the directory where the output is placed to _DIR_. Default: html.

--css={URL}

The CSS file used by the HTML files (_URL_ can be relative).

--html-highlight=[code,all,auto]

Highlight Agda code only or everything in the generated HTML files. Default: all.