Bootstrap Build Server

index.js

// ========================================================================
// bootstrap-builder v0.1.0
// http://twitter.github.com/bootstrap
// ========================================================================
// Copyright 2011 Twitter, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================

var express = require('express')
  , uglifyJS = require('uglify-js')
  , https = require('https')
  , path = require('path')
  , app = express.createServer()

// parse form posts
app.use(express.bodyParser());

// Setup the API
//
// args:
//  - compress: boolean
//  - filenames: array of filenames
//  - branch: string representing branch name
//  - dir: string representing the directory location of the filenames

app.post('/', function(req, res) {

  var branch  = req.body.branch || 'master'
    , compress  = req.body.compress === 'true'
    , filenames = req.body.filenames.split(',')
    , dir = req.body.dir
    , content = []
    , done = 0

  filenames.forEach(function (filename) {
    var options = {
      host: 'raw.github.com'
    , port: 443
    , path: path.join('/twitter/bootstrap/', branch, dir, filename)
    , method: 'GET'
    }

    var hreq = https.request(options, function(hres) {

      hres.setEncoding('utf8')

      hres.on('data', function (chunk) {
        content.push(chunk)
      })

      hres.on('end', function () {
        if (++done == filenames.length) {
          content = content.join(' ')
          if (compress) {
            try {
              content = uglify(content, filenames)
            } catch (e) {
              content = 'error minifying source - please raise issue on http://github.com/twitter/bootstrap! thank you :)'
            }
          }
          res.attachment(compress ? 'boostrap.min.js' : 'bootstrap.js')
          res.send(content, { 'Content-Type': 'text/javascript' }, 201)
        }
      })
    })

    hreq.end();
  })

})

app.listen(process.env.PORT || 3000)


// UGLIFY.js Utility method

function uglify(content, names) {
  var tok = uglifyJS.parser.tokenizer(content)
    , c = tok()
    , result
    , ast

  result = '/**\n'
    + '* Bootstrap.js by @fat & @mdo\n'
    + '* plugins: ' + names.join(', ') + '\n'
    + '* Copyright 2012 Twitter, Inc.\n'
    + '* http://www.apache.org/licenses/LICENSE-2.0.txt\n'
    + '*/\n'

  ast = uglifyJS.parser.parse(content)
  ast = uglifyJS.uglify.ast_mangle(ast)
  ast = uglifyJS.uglify.ast_squeeze(ast)

  return result += uglifyJS.uglify.gen_code(ast)
}