index.js

var aglio = require('aglio');
var through2 = require('through2');
var gutil = require('gulp-util');
var PluginError = gutil.PluginError;
var defaults = require('lodash.defaults');
var path = require('path');

module.exports = function (options) {
  'use strict';
  // Mixes in default options.
  options = defaults(options || {}, {
    compress: false,
    paths: []
  });

  function transform(file, enc, next) {
    var self = this;

    if (file.isNull()) {
      self.push(file); // pass along
      return next();
    }

    if (file.isStream()) {
      self.emit('error', new PluginError('gulp-aglio', 'Streaming not supported'));
      return next();
    }

    var str = file.contents.toString('utf8');

    // Clones the options object.
    var opts = defaults({
      theme: 'default'
    }, options);

    // Injects the path of the current file.
    opts.filename = file.path;

    // Inject includePath for relative includes
    opts.includePath = opts.includePath || path.dirname(opts.filename);

    try {
      aglio.render(str, opts, function (err, html) {
        if (err) {
          self.emit('error', new PluginError('gulp-aglio', err));
        } else {
          file.contents = new Buffer(html);
          file.path = gutil.replaceExtension(file.path, '.html');
          self.push(file);
        }
        next();
      });
    } catch (err) {
      self.emit('error', new PluginError('gulp-aglio', err));
    }
  }

  return through2.obj(transform);
};