karma-slim-preprocessor-with-binary-option/lib/slim2html.js

A Karma plugin. Compile slim files to html on the fly

var util = require('util');
var spawn = require('child_process').spawn;

var createSlimPreprocessor = function(logger, config) {
  config = typeof config === 'object' ? config : {};
  var log = logger.create('preprocessor.slim');
  var slimrb = config.slimrb || 'slimrb';

  return function(content, file, done) {
    var child, html, origPath;

    log.debug('Processing "%s".', file.originalPath);

    origPath = file.originalPath;
    html = '';
    child = spawn(slimrb, [origPath]);

    child.on('error', function (error) {
      if (error.code === 'ENOENT') {
        log.error('It does not appear as though `slimrb` is installed. Try running `bundle install` in your project.');
        done('');
      }
    });

    child.stdout.on('data', function (buf) {
      html += String(buf);
    });

    child.stdout.on('close', function (buf) {
      done(html);
    });

    child.stderr.on('data', function (buf) {
      throw String(buf);
    });
  };
};

createSlimPreprocessor.$inject = ['logger', 'config.slimPreprocessor'];

module.exports = createSlimPreprocessor;