refactoring, added uri class.

laravel/uri.php

@@ -0,0 +1,141 @@
+<?php namespace Laravel;
+
+class URI {
+
+	/**
+	 * The $_SERVER array for the current request.
+	 *
+	 * @var array
+	 */
+	protected $server;
+
+	/**
+	 * The application URL as specified in the application configuration file.
+	 *
+	 * @var string
+	 */
+	protected $url;
+
+	/**
+	 * The URI for the current request.
+	 *
+	 * This property will be set after the URI is detected for the first time.
+	 *
+	 * @var string
+	 */
+	protected $uri;
+
+	/**
+	 * Create a new URI instance.
+	 *
+	 * @param  array   $server
+	 * @param  string  $url
+	 * @return void
+	 */
+	public function __construct($server, $url)
+	{
+		$this->url = $url;
+		$this->server = $server;
+	}
+
+	/**
+	 * Get the URI for the current request.
+	 *
+	 * @return string
+	 */
+	public function get()
+	{
+		if ( ! is_null($this->uri)) return $this->uri;
+
+		if (($uri = $this->from_server()) === false)
+		{
+			throw new \Exception('Malformed request URI. Request terminated.');
+		}
+
+		return $this->uri = $this->format($this->clean($uri));
+	}
+
+	/**
+	 * Get a given URI segment from the URI for the current request.
+	 *
+	 * <code>
+	 *		// Get the first segment from the request URI
+	 *		$first = Request::uri()->segment(1);
+	 *
+	 *		// Get the second segment or return a default value if it doesn't exist
+	 *		$second = Request::uri()->segment(2, 'Taylor');
+	 *
+	 *		// Get all of the segments for the request URI
+	 *		$segments = Request::uri()->segment();
+	 * </code>
+	 *
+	 * @param  int     $segment
+	 * @param  mixed   $default
+	 * @return string
+	 */
+	public function segment($segment = null, $default = null)
+	{
+		$segments = Arr::without(explode('/', $this->detect()), array(''));
+
+		if ( ! is_null($segment)) $segment = $segment - 1;
+
+		return Arr::get($segments, $segment, $default);
+	}
+
+	/**
+	 * Get the request URI from the $_SERVER array.
+	 *
+	 * @return string
+	 */
+	protected function from_server()
+	{
+		// If the PATH_INFO $_SERVER element is set, we will use since it contains
+		// the request URI formatted perfectly for Laravel's routing engine.
+		if (isset($this->server['PATH_INFO']))
+		{
+			return $this->server['PATH_INFO'];
+		}
+
+		// If the REQUEST_URI is set, we need to extract the URL path since this
+		// should return the URI formatted in a manner similar to PATH_INFO.
+		elseif (isset($this->server['REQUEST_URI']))
+		{
+			return parse_url($this->server['REQUEST_URI'], PHP_URL_PATH);
+		}
+
+		throw new \Exception('Unable to determine the request URI.');
+	}
+
+	/**
+	 * Remove extraneous segments from the URI such as the URL and index page.
+	 *
+	 * These segments need to be removed since they will cause problems in the
+	 * routing engine if they are present in the URI.
+	 *
+	 * @param  string  $uri
+	 * @return string
+	 */
+	protected function clean($uri)
+	{
+		foreach (array(parse_url($this->url, PHP_URL_PATH), '/index.php') as $value)
+		{
+			$uri = (strpos($uri, $value) === 0) ? substr($uri, strlen($value)) : $uri;
+		}
+
+		return $uri;
+	}
+
+	/**
+	 * Format the URI.
+	 *
+	 * If the request URI is empty, a single forward slash will be returned.
+	 *
+	 * @param  string  $uri
+	 * @return string
+	 */
+	protected function format($uri)
+	{
+		return (($uri = trim($uri, '/')) == '') ? '/' : $uri;
+	}
+
+}