added uri class. refactored.

laravel/uri.php

@@ -0,0 +1,105 @@
+<?php namespace Laravel;
+
+class URI {
+
+	/**
+	 * The URI for the current request.
+	 *
+	 * @var string
+	 */
+	protected static $uri;
+
+	/**
+	 * The URI segments for the current request.
+	 *
+	 * @var array
+	 */
+	protected static $segments = array();
+
+	/**
+	 * Get the URI for the current request.
+	 *
+	 * If the request is to the root of the application, a single forward slash
+	 * will be returned. Otherwise, the URI will be returned with all of the
+	 * leading and trailing slashes removed.
+	 *
+	 * @return string
+	 */
+	public static function current()
+	{
+		if ( ! is_null(static::$uri)) return static::$uri;
+
+		$uri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
+
+		// Remove the root application URL from the request URI. If the application
+		// is nested within a sub-directory of the web document root, this will get
+		// rid of all of the the sub-directories from the request URI.
+		$uri = static::remove($uri, parse_url(Config::$items['application']['url'], PHP_URL_PATH));
+
+		if (($index = '/'.Config::$items['application']['index']) !== '/')
+		{
+			$uri = static::remove($uri, $index);
+		}
+
+		// Format the final request URI. If there is nothing left, we will just
+		// return a single forward slash. Otherwise, we'll remove all of the
+		// leading and trailing spaces from the URI before returning it.
+		static::$uri = $uri = static::format($uri);
+
+		static::$segments = explode('/', $uri);
+
+		return static::$uri;
+	}
+
+	/**
+	 * Get a specific segment of the request URI via an one-based index.
+	 *
+	 * <code>
+	 *		// Get the first segment of the request URI
+	 *		$segment = URI::segment(1);
+	 *
+	 *		// Get the second segment of the URI, or return a default value
+	 *		$segment = URI::segment(2, 'Taylor');
+	 * </code>
+	 *
+	 * @param  int     $index
+	 * @param  mixed   $default
+	 * @return string
+	 */
+	public static function segment($index, $default = null)
+	{
+		static::current();
+
+		return Arr::get(static::$segments, $index - 1, $default);
+	}
+
+	/**
+	 * Remove a given value from the URI.
+	 *
+	 * @param  string  $uri
+	 * @param  string  $value
+	 * @return string
+	 */
+	protected static function remove($uri, $value)
+	{
+		if (strpos($uri, $value) === 0)
+		{
+			return substr($uri, strlen($value));
+		}
+	}
+
+	/**
+	 * Format a given URI.
+	 *
+	 * If the URI is an empty string, a single forward slash will be returned.
+	 * Otherwise, we will simply trim the URI's leading and trailing slashes.
+	 *
+	 * @param  string  $uri
+	 * @return string
+	 */
+	protected static function format($uri)
+	{
+		return (($uri = trim($uri, '/')) !== '') ? $uri : '/';
+	}
+
+}