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8baed187 Michal Kliment
<?php defined('SYSPATH') or die('No direct script access.');
/**
* URI library.
*
* $Id: URI.php 1911 2008-02-04 16:13:16Z PugFish $
*
* @package Core
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @license http://kohanaphp.com/license.html
*/
class URI extends Router {

/**
* Returns a singleton instance of URI.
*
* @return object
*/
public static function instance()
{
static $instance;

// Initialize the URI instance
empty($instance) and $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, self::$segments)) === FALSE)
return $default;

$index = $key + 2;
}

$index = (int) $index - 1;

return isset(self::$segments[$index]) ? self::$segments[$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, self::$rsegments)) === FALSE)
return $default;

$index = $key + 2;
}

$index = (int) $index - 1;

return isset(self::$rsegments[$index]) ? self::$rsegments[$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, self::$arguments)) === FALSE)
return $default;

$index = $key + 2;
}

$index = (int) $index - 1;

return isset(self::$arguments[$index]) ? self::$arguments[$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)
{
$segment_array = self::$segments;
array_unshift($segment_array, 0);
$segment_array = array_slice($segment_array, $offset + 1, $this->total_segments(), TRUE);

if ( ! $associative)
return $segment_array;

$segment_array_assoc = array();

foreach (array_chunk($segment_array, 2) as $pair)
{
$segment_array_assoc[$pair[0]] = isset($pair[1]) ? $pair[1] : '';
}

return $segment_array_assoc;
}

/**
* 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)
{
$segment_array = self::$rsegments;
array_unshift($segment_array, 0);
$segment_array = array_slice($segment_array, $offset + 1, $this->total_segments(), TRUE);

if ( ! $associative)
return $segment_array;

$segment_array_assoc = array();

foreach (array_chunk($segment_array, 2) as $pair)
{
$segment_array_assoc[$pair[0]] = isset($pair[1]) ? $pair[1] : '';
}

return $segment_array_assoc;
}

/**
* 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)
{
$argument_array = self::$arguments;
array_unshift($argument_array, 0);
$argument_array = array_slice($argument_array, $offset + 1, $this->total_arguments(), TRUE);

if ( ! $associative)
return $argument_array;

$argument_array_assoc = array();

foreach (array_chunk($argument_array, 2) as $pair)
{
$argument_array_assoc[$pair[0]] = isset($pair[1]) ? $pair[1] : '';
}

return $argument_array_assoc;
}

/**
* Returns the complete URI as a string.
*
* @return string
*/
public function string()
{
return self::$current_uri;
}

/**
* Magic method for converting an object to a string.
*
* @return string
*/
public function __toString()
{
return $this->string();
}

/**
* Returns the total number of URI segments.
*
* @return integer
*/
public function total_segments()
{
return count(self::$segments);
}

/**
* Returns the total number of re-routed URI segments.
*
* @return integer
*/
public function total_rsegments()
{
return count(self::$rsegments);
}

/**
* Returns the total number of URI arguments.
*
* @return integer
*/
public function total_arguments()
{
return count(self::$arguments);
}

/**
* Returns the last URI segment.
*
* @param mixed default value returned if segment does not exist
* @return string
*/
public function last_segment($default = FALSE)
{
if ($this->total_segments() < 1)
return $default;

return end(self::$segments);
}

/**
* Returns the last re-routed URI segment.
*
* @param mixed default value returned if segment does not exist
* @return string
*/
public function last_rsegment($default = FALSE)
{
if ($this->total_rsegments() < 1)
return $default;

return end(self::$rsegments);
}

} // End URI Class