mason/lib/builders/stylus.js

simple, fun, static-file builder for jade, stylus, and javascript

var util = require('../util');
var fs = require('fs');
var stylus = require('stylus');
var nib = require('nib');

// TODO: make capable of compiling multiple source files together
module.exports = function(options) {
  var asset = options.asset;

  // Lists of source and dest files
  var sourceFile = util.buildPaths(options.dir, asset.fromBase, asset.fromSrc)[0];
  var destFiles = util.buildPaths(options.dir, asset.toBase, asset.toSrc);

  // Build the css
  var contents = fs.readFileSync(sourceFile, 'utf-8');
  return stylus(contents)
    .set('filename', sourceFile)
    .use(nib())
    .render(function(err, css) {
      if (err) throw err;
      return writeAllFiles(css);
    });

  function writeAllFiles(css) {
    destFiles.forEach(function(destFile) {
      util.writeFile(destFile, css);
    });
  }
};