init.js

/*
 * JavaScript tracker for Snowplow: init.js
 *
 * Significant portions copyright 2010 Anthon Pang. Remainder copyright
 * 2012-2014 Snowplow Analytics Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of Anthon Pang nor Snowplow Analytics Ltd nor the
 *   names of their contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

// Snowplow Asynchronous Queue

/*
 * Get the name of the global input function
 */
var snowplow = require('./snowplow'),
  queueName,
  queue,
  windowAlias = window

if (
  windowAlias.UnbounceSnowplowNamespace &&
  windowAlias.UnbounceSnowplowNamespace.length > 0
) {
  // Unbounce Namespace
  queueName = windowAlias.UnbounceSnowplowNamespace.shift()
  queue = windowAlias[queueName]
  queue.q = new snowplow.Snowplow(queue.q, queueName)
} else if (
  // Default namespace
  windowAlias.GlobalSnowplowNamespace &&
  windowAlias.GlobalSnowplowNamespace.length > 0
) {
  queueName = windowAlias.GlobalSnowplowNamespace.shift()
  queue = windowAlias[queueName]
  queue.q = new snowplow.Snowplow(queue.q, queueName)
} else {
  windowAlias._snaq = windowAlias._snaq || []
  windowAlias._snaq = new snowplow.Snowplow(windowAlias._snaq, '_snaq')
}