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Flexible static website generator, with good support for localization and navigation.

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Amber

Amber is a super simple and flexible static website generator, with good support for localization and navigation.

This is still experimental code.

Amber has much in common with other static page generators, but has several features that make it unique:

  • I18n: Primary focus is on very good multi-lingual and localization support. By using a bunch of Apache tricks, Amber is able to create static websites which work more like dynamic sites when it comes to selecting the appropriate locale.
  • Inheritance: Properties are inherited in the page hierarchy.
  • TOC: Support for table of contents (including inserting TOC into other pages, and TOC generation from pages generated by a combination of partials and different markup languages).
  • Flexible: Ability to set custom page path aliases, render partials, rich navigation, and so on.
  • Wiki Linking: Built in wiki-linking, with dead link detection and hierarchical paths.

Amber allows ERB (ruby code) in all page markup types, making it unsuitable for any website where you do not trust the source of the page text.

Installation

Installing from gem:

sudo apt-get install rubygems ruby-dev build-essential
sudo gem install amber

Alternately, you can run directly from source:

sudo apt install ruby ruby-dev
sudo gem install bundler
cd ~
git clone https://github.com/leapcode/amber
cd amber
mkdir vendor
bundle config set --local path "vendor"
bundle
export GEM_HOME="~/amber/vendor/ruby/2.7.0/"
export PATH="~/amber/bin:$PATH"

Directory structure

A simple website has three main folders, amber, pages, and public. For example:

mysite/
  amber/
    config.rb
    locales/
      en.yml
    menu.txt
    layouts/
      default.haml
  pages/
    page1.en.md
    page1.de.md
  public/
    page1/
      en.html
      de.html

The public folder is automatically generated from the pages folder. Configuration lives in amber.

Menu

A page does not show up in the navigation unless it appears in amber/menu.txt.

The order in menu.txt determines the order in the navigation. For example:

aaa
ccc
bbb

Page hierarchy is represented by two spaces:

aaa
  bbb
  ccc
    ddd
eee

The items in the menu.txt file must match the names of the pages (the filename with the suffix and locale stripped away).

Supported syntaxes

Depending the the file extension, the file with be parsed like so:

.haml       -- HAML
.md         -- Markdown
.markdown   -- Markdown
.text       -- Textile
.textile    -- Textile
.html       -- HTML

You can use the native linking method for each markup, or you can use the Amber link method:

[[label -> page-name]]
or
[[label => page-name]]
or
[[label -> absolute-url]]
or
[[page-name]]

In these examples, page-name can be the name of the page, optionally qualified by some context. For example, if you had two pages called security, you could link to [[chat/security]] or [[email/security]].

This double bracket link notation will automatically find the right path for the page with the specified name. Also, Amber will warn you if the page name is missing and it will ensure that the link is created with the correct language prefix. In haml, you can get the same effect using link 'label' => 'page-name'

If writing in a right to left script, the links look like:

[[page-name <= label]]

But only if your text editor correctly displays right to left script.

The arrows -> and => are used interchangeably.

Previewing pages

To preview your site, run amber server. Alternately, there are a couple options to preview your source files without needing to run the web server:

Setting page properties

Every file can have a "properties header". It looks like this:

@title = "A fine page"
@toc = false

continue on here with body text.

The properties start with '@' and are stripped out of the source file before it is rendered. Property header lines are evaluated as ruby. All properties are optional and they are inherited, including @title.

For haml files, the syntax is slightly different:

- @title = "A fine page"
- @toc = false

%p continue on here with body text.

Available properties:

  • @title -- The title for the page, appearing as in an H1 on the top of the page and as the HTML title. Also used for navigation title if @nav_title is not set. The inline H1 title does not appear unless @title is explicitly set for this page (i.e. the inherited value of @title does not trigger the automatic H1).
  • @nav_title -- The title for the navigation to this page, as well as the HTML title if @title is not set.
  • @toc -- If set to false, don't include a table of contents when rendering the file. This only applies to .rst and .md files.
  • @layout -- Manually set the layout template to use for rendering this page.
  • @author -- The author credit for the page.
  • @this.alias -- Alternate paths for the page to be rendered on. May be an array. The first path will be used when linking.

To make a property none-inheritable, specify it like so: @this.layout = 'home'. For some properties, like alias, it does not make sense for the property to be inheritable.

Testing

Run all the tests:

rake test

Run an individual test:

ruby -b test/unit/my_test.rb

Use -b to show the full stack trace.

Troubleshooting

If you get an error at some point like this:

WARNING: Nokogiri was built against LibXML version 2.8.0, but has dynamically loaded 2.9.1

It just means that libxml has been upgraded since the gem nokogiri was installed. To fix, run this:

sudo gem pristine nokogiri

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