--- /dev/null
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * URI library.
+ *
+ * $Id: URI.php 4072 2009-03-13 17:20:38Z jheathco $
+ *
+ * @package Core
+ * @author Kohana Team
+ * @copyright (c) 2007-2008 Kohana Team
+ * @license http://kohanaphp.com/license.html
+ */
+class URI_Core extends Router {
+
+ /**
+ * Returns a singleton instance of URI.
+ *
+ * @return object
+ */
+ public static function instance()
+ {
+ static $instance;
+
+ if ($instance == NULL)
+ {
+ // Initialize the URI instance
+ $instance = new URI;
+ }
+
+ return $instance;
+ }
+
+ /**
+ * Retrieve a specific URI segment.
+ *
+ * @param integer|string segment number or label
+ * @param mixed default value returned if segment does not exist
+ * @return string
+ */
+ public function segment($index = 1, $default = FALSE)
+ {
+ if (is_string($index))
+ {
+ if (($key = array_search($index, URI::$segments)) === FALSE)
+ return $default;
+
+ $index = $key + 2;
+ }
+
+ $index = (int) $index - 1;
+
+ return isset(URI::$segments[$index]) ? URI::$segments[$index] : $default;
+ }
+
+ /**
+ * Retrieve a specific routed URI segment.
+ *
+ * @param integer|string rsegment number or label
+ * @param mixed default value returned if segment does not exist
+ * @return string
+ */
+ public function rsegment($index = 1, $default = FALSE)
+ {
+ if (is_string($index))
+ {
+ if (($key = array_search($index, URI::$rsegments)) === FALSE)
+ return $default;
+
+ $index = $key + 2;
+ }
+
+ $index = (int) $index - 1;
+
+ return isset(URI::$rsegments[$index]) ? URI::$rsegments[$index] : $default;
+ }
+
+ /**
+ * Retrieve a specific URI argument.
+ * This is the part of the segments that does not indicate controller or method
+ *
+ * @param integer|string argument number or label
+ * @param mixed default value returned if segment does not exist
+ * @return string
+ */
+ public function argument($index = 1, $default = FALSE)
+ {
+ if (is_string($index))
+ {
+ if (($key = array_search($index, URI::$arguments)) === FALSE)
+ return $default;
+
+ $index = $key + 2;
+ }
+
+ $index = (int) $index - 1;
+
+ return isset(URI::$arguments[$index]) ? URI::$arguments[$index] : $default;
+ }
+
+ /**
+ * Returns an array containing all the URI segments.
+ *
+ * @param integer segment offset
+ * @param boolean return an associative array
+ * @return array
+ */
+ public function segment_array($offset = 0, $associative = FALSE)
+ {
+ return $this->build_array(URI::$segments, $offset, $associative);
+ }
+
+ /**
+ * Returns an array containing all the re-routed URI segments.
+ *
+ * @param integer rsegment offset
+ * @param boolean return an associative array
+ * @return array
+ */
+ public function rsegment_array($offset = 0, $associative = FALSE)
+ {
+ return $this->build_array(URI::$rsegments, $offset, $associative);
+ }
+
+ /**
+ * Returns an array containing all the URI arguments.
+ *
+ * @param integer segment offset
+ * @param boolean return an associative array
+ * @return array
+ */
+ public function argument_array($offset = 0, $associative = FALSE)
+ {
+ return $this->build_array(URI::$arguments, $offset, $associative);
+ }
+
+ /**
+ * Creates a simple or associative array from an array and an offset.
+ * Used as a helper for (r)segment_array and argument_array.
+ *
+ * @param array array to rebuild
+ * @param integer offset to start from
+ * @param boolean create an associative array
+ * @return array
+ */
+ public function build_array($array, $offset = 0, $associative = FALSE)
+ {
+ // Prevent the keys from being improperly indexed
+ array_unshift($array, 0);
+
+ // Slice the array, preserving the keys
+ $array = array_slice($array, $offset + 1, count($array) - 1, TRUE);
+
+ if ($associative === FALSE)
+ return $array;
+
+ $associative = array();
+ $pairs = array_chunk($array, 2);
+
+ foreach ($pairs as $pair)
+ {
+ // Add the key/value pair to the associative array
+ $associative[$pair[0]] = isset($pair[1]) ? $pair[1] : '';
+ }
+
+ return $associative;
+ }
+
+ /**
+ * Returns the complete URI as a string.
+ *
+ * @return string
+ */
+ public function string()
+ {
+ return URI::$current_uri;
+ }
+
+ /**
+ * Magic method for converting an object to a string.
+ *
+ * @return string
+ */
+ public function __toString()
+ {
+ return URI::$current_uri;
+ }
+
+ /**
+ * Returns the total number of URI segments.
+ *
+ * @return integer
+ */
+ public function total_segments()
+ {
+ return count(URI::$segments);
+ }
+
+ /**
+ * Returns the total number of re-routed URI segments.
+ *
+ * @return integer
+ */
+ public function total_rsegments()
+ {
+ return count(URI::$rsegments);
+ }
+
+ /**
+ * Returns the total number of URI arguments.
+ *
+ * @return integer
+ */
+ public function total_arguments()
+ {
+ return count(URI::$arguments);
+ }
+
+ /**
+ * Returns the last URI segment.
+ *
+ * @param mixed default value returned if segment does not exist
+ * @return string
+ */
+ public function last_segment($default = FALSE)
+ {
+ if (($end = $this->total_segments()) < 1)
+ return $default;
+
+ return URI::$segments[$end - 1];
+ }
+
+ /**
+ * Returns the last re-routed URI segment.
+ *
+ * @param mixed default value returned if segment does not exist
+ * @return string
+ */
+ public function last_rsegment($default = FALSE)
+ {
+ if (($end = $this->total_segments()) < 1)
+ return $default;
+
+ return URI::$rsegments[$end - 1];
+ }
+
+ /**
+ * Returns the path to the current controller (not including the actual
+ * controller), as a web path.
+ *
+ * @param boolean return a full url, or only the path specifically
+ * @return string
+ */
+ public function controller_path($full = TRUE)
+ {
+ return ($full) ? url::site(URI::$controller_path) : URI::$controller_path;
+ }
+
+ /**
+ * Returns the current controller, as a web path.
+ *
+ * @param boolean return a full url, or only the controller specifically
+ * @return string
+ */
+ public function controller($full = TRUE)
+ {
+ return ($full) ? url::site(URI::$controller_path.URI::$controller) : URI::$controller;
+ }
+
+ /**
+ * Returns the current method, as a web path.
+ *
+ * @param boolean return a full url, or only the method specifically
+ * @return string
+ */
+ public function method($full = TRUE)
+ {
+ return ($full) ? url::site(URI::$controller_path.URI::$controller.'/'.URI::$method) : URI::$method;
+ }
+
+} // End URI Class
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