zola/README.md

Gutenberg

An opinionated static site generator written in Rust.

Installation

You can get the latest release by going to the Release page. Alternatively, if you have the rust toolchain on your computer, you can also install it through Cargo: cargo install gutenberg.

Usage

Creating a new site

Use gutenberg init <a_directory_name>. This will create a folder with the name given and the base structure of a gutenberg site.

Working on a site

Use gutenberg serve to spin up a server that will automatically live reload any changes to the content, templates or static files.

Building a site

Use gutenberg build to generate the site in the public/ directory.

Gutenberg terms

Some words are going to be repeated in the docs so let's make sure they are clear.

• Page: a markdown file in the content directory that has a name different from _index.md
• Section: a group of pages in the content directory that has _index.md in the same folder

Configuration

Configuration is using the TOML language. Only 2 parameters are required: title and base_url. The other options are:

• highlight_code: Whether to highlight all code blocks found in markdown files. Defaults to false
• highlight_theme: Which themes to use for code highlighting. Defaults to “base16-ocean-dark”
• language_code: The language used in the site. Defaults to “en”
• generate_rss: Whether to generate RSS, defaults to false
• generate_tags_pages: Whether to generate tags and individual tag pages if some pages have them. Defaults to true
• generate_categories_pages: Whether to generate categories and individual category categories if some pages have them. Defaults to true

If you want to add some of your own variables, you will need to put them in the [extra] table in config.toml or they will be silently ignored.

Templates

Templates live in the templates/ directory. Only Tera templates are supported.

Each kind of page get their own variables:

// TODO: detail the schema of the variables

• index.html: gets pages that contain all pages in the site
• page.html: gets page that contains the data for that page
• section.html: gets section that contains the data for pages in it and its subsections
• tags.html: gets tags
• tag.html: gets tag and pages
• categories.html: gets categories
• category.html: gets category and pages

Additionally, all pages get a config variable representing the data in config.toml. If you want to know all the data present in a template content, simply put {{ __tera_context }} in the templates and it will print it.

Static files

Everything in the static folder will be copied into the output directory as-is.

Pages

Pages have to start with a front-matter enclosed in +++. Here is a minimal example:

+++
title = "My page"
description = "Some meta info"
+++

A simple page with fixed url

A front-matter requires a title, a description and has the following optional variables:

• date: a YYYY-MM-DD or RFC339 formatted date
• slug: what slug to use in the url
• url: this overrides the slug and make this page accessible at {config.base_url}/{url}
• tags: an array of strings
• category: only one category is allowed
• draft: whether the post is a draft or not
• template: if you want to change the template used to render that specific page

You can also, like in the config, add your own variables in a [extra] table. The front-matter will be accessible in templates at the page.meta field.

By default, the URL of a page will follow the filesystem paths. For example, if you have a page at content/posts/python3.md, it will be available at {config.base_url}/posts/python3/. You can override the slug created from the filename by setting the slug variable in the front-matter.

Quite often, a page will have assets and you might want to co-locate them with the markdown file. Gutenberg supports that pattern out of the box: you can create a folder, put a file named index.md and any number of files along with it that are NOT markdown. Those assets will be copied in the same folder when building so you can just use a relative path to use them.

A summary is only defined if you put <!-- more --> in the content. If present in a page, the summary will be from the start up to that tag.s

Sections

Sections represent a group of pages, for example a tutorials section of your site. Sections are only created in Gutenberg when a file named _index.md is found in the content directory.

This _index.md file needs to include a front-matter as well, but won't have content:

+++
title = "Tutorials"
description = ""
+++

Both title and description are mandatory, you can also set the template variable to change which template will be used to render that section.

Sections will also automatically pick up their subsections, allowing you to make some complex pages layout and table of contents.

Code highlighting themes

Code highlighting can be turned on by setting highlight_code = true in config.toml.

When turned on, all text between backticks will be highlighted, like the example below.

```rust
let site = Site::new();
```

If the name of the language is not given, it will default to plain-text highlighting.

Gutenberg uses Sublime Text themes for syntax highlighting. It comes with the following theme built-in:

• base16-ocean-dark
• base16-ocean-light
• gruvbox-dark
• gruvbox-light
• inspired-github
• kronuz
• material-dark
• material-light
• monokai
• solarized-dark
• solarized-light

A gallery containing lots of themes at https://tmtheme-editor.herokuapp.com/#!/editor/theme/Agola%20Dark. More themes can be easily added to gutenberg, just make a PR with the wanted theme.

Shortcodes

Gutenberg uses markdown for content but sometimes you want to insert some HTML, for example for a YouTube video. Rather than copy/pasting the HTML around, Gutenberg supports shortcodes, allowing you to define templates using Tera and call those templates inside markdown.

Using a shortcode

There are 2 kinds of shortcodes: simple ones and those that take some content as body. All shortcodes need to be preceded by a blank line or they will be contained in a paragraph.

Simple shortcodes are called the following way:

{{ youtube(id="my_youtube_id") }}

Shortcodes with a body are called like so:

{% quote(author="Me", link="https://google.com") %}
My quote
{% end %}

The shortcodes names are taken from the files they are defined in, for example a shortcode with the name youtube will try to render the template at templates/shortcodes/youtube.html.

Built-in shortcodes

Gutenberg comes with a few built-in shortcodes:

• YouTube: embeds a YouTube player for the given YouTube id. Also takes an optional autoplay argument that can be set to true if wanted
• Vimeo: embeds a Vimeo player for the given Vimeo id
• Gist: embeds a Github gist from the url given. Also takes an optional file argument if you only want to show one of the files.

Defining a shortcode

All shortcodes need to be in the templates/shortcodes folder and their files to end with .html. Shortcodes templates are simple Tera templates, with all the args being directly accessible in the template.

In case of shortcodes with a body, the body will be passed as the body variable.

Example sites

• vincent.is: https://gitlab.com/Keats/vincent.is