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Introduction

An API Blueprint renderer that supports multiple themes and outputs static HTML that can be served by any web host. API Blueprint is a Markdown-based document format that lets you write API descriptions and documentation in a simple and straightforward way. Currently supported is API Blueprint format 1A.

Features

  • Fast parsing thanks to Protagonist
  • Asyncronous processing
  • Multiple templates/themes
  • Support for custom templates written in Jade
  • Commandline executable aglio -i api.md -o api.html
  • Live preview server aglio -i api.md --server
  • Node.js library require('aglio')
  • Excellent test coverage

Example Output

Example output is generated from the example API Blueprint.

Installation & Usage

There are two ways to use aglio: as an executable or as a library for Node.js.

Executable

Install aglio via NPM. You need Node.js installed and you may need to use sudo to install globally:

npm install -g aglio

Then, start generating HTML. Note that the built-in templates use scheme-relative URLs, so the resulting output files must be opened via http: or https:. Just opening the local file from the browser will result in a failure to load stylesheets and scripts. The -s option described below can help you with this.

# Default template
aglio -i input.md -o output.html

# Get a list of built-in templates
aglio -l

# Built-in template
aglio -t slate -i input.md -o output.html

# Custom template
aglio -t /path/to/template.jade -i input.md -o output.html

# Run a live preview server on http://localhost:3000/
aglio -i input.md -s

# Print output to terminal (useful for piping)
aglio -i input.md -o -

# Disable condensing navigation links
aglio -i input.md --no-condense -o output.html

# Render full-width page instead of fixed max width
aglio -i input.md --full-width -o output.html

Node.js Library

You can also use aglio as a library. First, install and save it as a dependency:

npm install --save aglio

Then, convert some API Blueprint to HTML:

var aglio = require('aglio');

// Render a blueprint with a template by name
var blueprint = '# Some API Blueprint string';
var template = 'default';

aglio.render(blueprint, template, function (err, html, warnings) {
    if (err) return console.log(err);
    if (warnings) console.log(warnings);

    console.log(html);
});

// Render a blueprint with a custom template file
var customTemplate = '/path/to/my-template.jade';
aglio.render(blueprint, customTemplate, function (err, html, warnings) {
    if (err) return console.log(err);
    if (warnings) console.log(warnings);

    console.log(html);
});


// Pass custom locals along to the template, for example
// the following gives templates access to lodash and async
var options = {
    template: '/path/to/my-template.jade',
    locals: {
        _: require('lodash'),
        async: require('async')
    }
};
aglio.render(blueprint, options, function (err, html, warnings) {
   if (err) return console.log(err);
   if (warnings) console.log(warnings);

   console.log(html);
});

Reference

The following methods are available from the aglio library:

aglio.getTemplates (callback)

Get a list of internal template names that can be used when rendering.

aglio.getTemplates(function (err, names) {
    if (err) return console.log(err);

    console.log('Templates: ' + names.join(', '));
});

aglio.render (blueprint, options, callback)

Render an API Blueprint string and pass the generated HTML to the callback. The options can either be an object of options or a simple template name or file path string. Available options are:

Option Type Default Description
condenseNav bool true Condense navigation links
filterInput bool true Filter \r and \t from the input
locals object {} Extra locals to pass to templates
template string Template name or path to custom template file
var blueprint = '...';
var options = {
    template: 'default',
    locals: {
        myVariable: 125
    }
};

alio.render(blueprint, options, function (err, html, warnings) {
    if (err) return console.log(err);

    console.log(html);
});

aglio.renderFile (inputFile, outputFile, options, callback)

Render an API Blueprint file and save the HTML to another file. The input/output file arguments are file paths. The options behaves the same as above for aglio.render.

aglio.renderFile('/tmp/input.md', '/tmp/output.html', 'default', function (err, warnings) {
    if (err) return console.log(err);
    if (warnings) console.log(warnings);
})

Development

Pull requests are encouraged! Feel free to fork and hack away, especially on new themes. The build system in use is Grunt, so make sure you have it installed:

npm install -g grunt-cli

Then you can build the source and run the tests:

# Lint/compile the Coffeescript
grunt

# Run the test suite
grunt test

# Generate an HTML test coverage report
grunt coverage

# Render examples
grunt examples

Custom Themes

Themes are written using Jade, with support for Coffeescript and Stylus via filters. The output of aglio is a single HTML file, but custom themes can make use of Jade's extend and include directives, which allow you to split a theme among multiple files (the built-in themes do this). The locals available to themes look like the following:

Name Description
api The API AST from Protagonist
condenseNav If true, you should condense the nav if possible
date Date and time handling from Moment.js
fullWidth If true, you should consume the entire page width
highlight A function (code, lang) to highlight a piece of code
markdown A function to convert Markdown strings to HTML
slug A function to convert a string to a slug usable as an ID
hash A function to return an hash (currently MD5)

The default themes in the templates directory provide a fairly complete example of how to use the above locals. Remember, you can use any functionality available in Jade, Javascript, Coffeescript, CSS, and Stylus. Even though only one HTML page is generated, you can for example do client-side routing with Backbone, Sammy or Davis and get multiple pages on the client.

License

Copyright (c) 2014 Daniel G. Taylor

http://dgt.mit-license.org/

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stephenemslie
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