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README.md

blake - generate sites

SYNOPSIS

blake source_directory target_directory  
blake source_directory target_directory source_file ...

DESCRIPTION

In the first synopsis form, blake writes all files generated from input data in the source_directory to the target_directory. In the second synopsis form, just the file generated from the source_file is written to the target_directory. You can also generate from multiple source files.

Blake is a Node.js module that provides a simple, blog aware, and view agnostic infrastructure to generate static websites. For unrestricted choice of input formats and template languages, blake confines itself to IO and template routing; it delegates the actual file generation to user-written view modules. Blake runs asynchronously; it can be used from command-line or as library.

LIBRARY USAGE

Generate all files:

var blake = require('blake');

blake.bake('input', 'output', function(err) {
  // Site generated
});

Generate a specific file:

var blake = require('blake');

blake.bake('input', 'output', 'input/about.md', function(err) {
  // About page generated
});

Generate multiple specific files:

var blake = require('blake');

var input = 'path/to/input';
var output = 'path/to/output';
var fileA = path.resolve(input, 'home.md');
var fileB = path.resolve(input, 'archive.md');

blake.bake(input, output, fileA, fileB, function(err) {
  // Home and archive page generated
});

OVERVIEW

At startup blake requires a configuration module, which has to export paths and a map of user-written functions that implement the actual generation of output artifacts. According to the configuration module blake reads all input data files. At the top of each input file blake expects a JSON header. From the header and the content of the input file blake constructs a source object, with which it applies the bake function of the according view module. This is done for all input files in parallel. The static resources are copied to the output directory as they are.

CONFIGURATION

Consider the following example of a configuration module:

// This module covers configuration.

// Export path conventions for input data.
exports.paths = {
  data: 'data', // required
  templates: 'templates', // required
  resources: 'resources', // optional
  posts: 'data/posts' // optional
};

// Export map with bake functions by template names.
exports.bakeFunctions = {
  'rss.jade': require('./rss.js').bake,
  'article.jade': require('./article.js').bake,
  'home.jade': require('./home.js').bake,
  'about.jade': require('./about.js').bake,
  'archive.jade': require('./archive.js').bake
};

The paths object defines input paths, where the two required directories are data and templates. From data blake loads general input data; from templates templates. The two optional directories are resources and posts. The content of resources is copied to output as it is. The posts directory hosts blog posts.

The bakeFunctions object is a map of user-written functions which implement the actual generation of output artifacts. Theses functions are mapped by template name.

INPUT

At the top of each input file blake expects a JSON string that is interpreted as header and provides parameters for generating. Besides it can contain additional user defined data—a raw version of the header is passed to the bake methods of the views. The input data for a blog entry could look like the following:

{
  "title": "Example",
  "description": "An example article",
  "template": "article.jade",
  "date": "2012-03-21"
}

The content of the example article.

The end of the header is marked by an empty line. Everything that follows is interpreted as content and is passed to the views untouched.

HEADER

JSON at the top of an input file:

{
  "title": "Example",
  "description": "An example article",
  "template": "article.jade",
  "date": "2012-03-21",
  "path": "2012/03",
  "name": "example"
}
  • title is the title of the page (optional)
  • description is the description of the page or rather the post (optional)
  • templateis the filename of template to use (required)
  • date is the publish date, if not provided it's set to NOW (optional)
  • path is the output path, if not provided the path of the input file is used (optional)
  • name is used as filename of the output file, if not provided the filename of the input file is used (optional)

The header is extendable with arbritrary fields, which can be interpreted by the views. The source object, passed to the views, provides a reference to the header object.

If you decide to mirror input file path and name in your output, you can omit path and name. In that case a typical header of a blog post might look like the following.

{
  "title": "Example",
  "description": "An example article",
  "template": "article.jade",
  "date": "2012-03-21",
}

An input file can consist of just the header; for example an RSS feed:

{
  "title": "Blog",
  "description": "Just my blog.",
  "link": "http://my.blog",
  "template": "rss.jade",
  "name": "rss.xml"
}

VIEWS

Views must export a bake function with this signature:

bake (src, callback)

In this function you implement the transformation from input to output and pass the result to the callback.

The src object for a exemplary blog post exposes the following (for brevity body and template appear shortened):

header: { title: 'Closure',
          description: 'A function together with a referencing environment',
          template: 'article.jade',
          date: Tue, 18 Oct 2011 00:00:00 GMT,
          name: 'closures.html',
          path: '/2011/10' },
body: '…',
paths: { outputPathName: '../website',
         pathToResources: 'resources',
         pathToData: 'data',
         templatesPathName: 'templates',
         posts: 'data/posts',
         config: 'views/config.js' },
filename: 'data/posts/2011/10/closures.md',
date: Tue, 18 Oct 2011 00:00:00 GMT,
templatePath: 'templates/article.jade',
path: '../website/2011/10',
name: 'closures.html',
link: '/2011/10/closures',
dateString: 'Tue Oct 18 2011',
template: '…'

To see a simple example:

git clone git://github.com/michaelnisi/blake.git 
cd blake/example
node generate.js

To evaluate a more elaborated example, you could generate my personal site, which requires Jade and Markdown:

npm install -g blake
npm install blake jade markdown
git clone git@github.com:michaelnisi/michaelnisi.git 
blake michaelnisi /tmp/michaelnisi-site

You might want to read the documentation of the views for this site, which are written in CoffeeScript; not to put you off, just to give it a shot—I found the use case rather fitting.

DEPLOYMENT

Of course you can build your site locally and upload it to your webserver manually, but I recommend to run Blake on a server, and use post-receive hooks to automatically generate your site on the server everytime you push to your input data repository.

INSTALLATION

Install via npm:

npm install -g blake

If you not want to use command-line blake, install without global flag:

npm install blake

To install from source:

git clone git://github.com/michaelnisi/blake.git 
cd blake
npm link

SEE ALSO

LICENSE

MIT License

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