<?php
/*
 * 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.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

/**
 * SplClassLoader implementation that implements the technical interoperability
 * standards for PHP 5.3 namespaces and class names.
 *
 * http://groups.google.com/group/php-standards/web/psr-0-final-proposal?pli=1
 *
 *     // Example which loads classes for the Doctrine Common package in the
 *     // Doctrine\Common namespace.
 *     $classLoader = new SplClassLoader('Doctrine\Common', '/path/to/doctrine');
 *     $classLoader->register();
 *
 * @license http://www.opensource.org/licenses/mit-license.html  MIT License
 * @author Jonathan H. Wage <jonwage@gmail.com>
 * @author Roman S. Borschel <roman@code-factory.org>
 * @author Matthew Weier O'Phinney <matthew@zend.com>
 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
 * @author Fabien Potencier <fabien.potencier@symfony-project.org>
 */
if ( !class_exists('SplClassLoader') ) {
    class SplClassLoader
    {
        private $_fileExtension = '.php';
        private $_namespace;
        private $_includePath;
        private $_namespaceSeparator = '\\';

        /**
         * Creates a new <tt>SplClassLoader</tt> that loads classes of the
         * specified namespace.
         *
         * @param string $ns The namespace to use.
         * @param string $includePath The include path to search
         */
        public function __construct($ns = null, $includePath = null)
        {
            $this->_namespace = $ns;
            $this->_includePath = $includePath;
        }

        /**
         * Sets the namespace separator used by classes in the namespace of this class loader.
         *
         * @param string $sep The separator to use.
         */
        public function setNamespaceSeparator($sep)
        {
            $this->_namespaceSeparator = $sep;
        }

        /**
         * Gets the namespace separator used by classes in the namespace of this class loader.
         *
         * @return string The separator to use.
         */
        public function getNamespaceSeparator()
        {
            return $this->_namespaceSeparator;
        }

        /**
         * Sets the base include path for all class files in the namespace of this class loader.
         *
         * @param string $includePath
         */
        public function setIncludePath($includePath)
        {
            $this->_includePath = $includePath;
        }

        /**
         * Gets the base include path for all class files in the namespace of this class loader.
         *
         * @return string $includePath
         */
        public function getIncludePath()
        {
            return $this->_includePath;
        }

        /**
         * Sets the file extension of class files in the namespace of this class loader.
         *
         * @param string $fileExtension
         */
        public function setFileExtension($fileExtension)
        {
            $this->_fileExtension = $fileExtension;
        }

        /**
         * Gets the file extension of class files in the namespace of this class loader.
         *
         * @return string $fileExtension
         */
        public function getFileExtension()
        {
            return $this->_fileExtension;
        }

        /**
         * Installs this class loader on the SPL autoload stack.
         */
        public function register()
        {
            spl_autoload_register(array($this, 'loadClass'));
        }

        /**
         * Uninstalls this class loader from the SPL autoloader stack.
         */
        public function unregister()
        {
            spl_autoload_unregister(array($this, 'loadClass'));
        }

        /**
         * Loads the given class or interface.
         *
         * @param string $className The name of the class to load.
         * @return void
         */
        public function loadClass($className)
        {
            if (null === $this->_namespace || $this->_namespace . $this->_namespaceSeparator === substr($className, 0, strlen($this->_namespace . $this->_namespaceSeparator))) {
                $fileName = '';
                $namespace = '';
                if (false !== ($lastNsPos = strripos($className, $this->_namespaceSeparator))) {
                    $namespace = substr($className, 0, $lastNsPos);
                    $className = substr($className, $lastNsPos + 1);
                    $fileName = str_replace($this->_namespaceSeparator, DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
                }
                $fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . $this->_fileExtension;
                require ($this->_includePath !== null ? $this->_includePath . DIRECTORY_SEPARATOR : '') . $fileName;
            }
        }
    }

    $twilioClassLoader = new SplClassLoader('Twilio', realpath(__DIR__ . DIRECTORY_SEPARATOR . '..'));
    $twilioClassLoader->register();
}