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<?php
if (!defined('BASEPATH'))
exit('No direct script access allowed');
/**
* CodeIgniter Slug Library
*
/**
* Slug Library
*
* Nothing but legless, boneless creatures who are responsible for creating
* magic "friendly urls" in your CodeIgniter application. Slugs are nocturnal
* feeders, hiding during daylight hours.
*
* @subpackage Libraries
*/
class Slug {
/**
* The name of the table
*
* @var string
*/
public $table = '';
/**
* The primary id field in the table
*
* @var string
*/
public $id = 'id';
/**
* The URI Field in the table
*
* @var string
*/
public $field = 'uri';
/**
* The title field in the table
*
* @var string
*/
public $title = 'title';
/**
* The replacement (Either underscore or dash)
*
* @var string
*/
public $replacement = 'dash';
// ------------------------------------------------------------------------
/**
* Setup all vars
*
* @param array $config
* @return void
*/
public function __construct($config = array()) {
$this->set_config($config);
log_message('debug', 'Slug Class Initialized');
}
// ------------------------------------------------------------------------
/**
* Manually Set Config
*
* Pass an array of config vars to override previous setup
*
* @param array
* @return void
*/
public function set_config($config = array()) {
if (!empty($config)) {
foreach ($config as $key => $value) {
$this->{$key} = $value;
}
}
}
// ------------------------------------------------------------------------
/**
* Create a uri string
*
* This wraps into the _check_uri method to take a character
* string and convert into ascii characters.
*
* @param mixed (string or array)
* @param int
* @uses Slug::_check_uri()
* @uses Slug::create_slug()
* @return string
*/
public function create_uri($data = '', $id = '') {
if (empty($data)) {
return FALSE;
}
if (is_array($data)) {
if (!empty($data[$this->field])) {
return $this->_check_uri($this->create_slug($data[$this->field]), $id);
} elseif (!empty($data[$this->title])) {
return $this->_check_uri($this->create_slug($data[$this->title]), $id);
}
} elseif (is_string($data)) {
return $this->_check_uri($this->create_slug($data), $id);
}
return FALSE;
}
// ------------------------------------------------------------------------
/**
* Create Slug
*
* Returns a string with all spaces converted to underscores (by default), accented
* characters converted to non-accented characters, and non word characters removed.
*
* @param string $string the string you want to slug
* @param string $replacement will replace keys in map
* @return string
*/
public function create_slug($string) {
$CI = & get_instance();
$CI->load->helper(array('url', 'text', 'string'));
$string = strtolower(url_title(convert_accented_characters($string), $this->replacement));
return reduce_multiples($string, $this->_get_replacement(), TRUE);
}
// ------------------------------------------------------------------------
/**
* Check URI
*
* Checks other items for the same uri and if something else has it
* change the name to "name-1".
*
* @param string $uri
* @param int $id
* @param int $count
* @return string
*/
private function _check_uri($uri, $id = FALSE, $count = 0) {
$CI = & get_instance();
$new_uri = ($count > 0) ? $uri . $this->_get_replacement() . $count : $uri;
// Setup the query
$CI->db->select($this->field)->where($this->field, $new_uri);
if ($id) {
$CI->db->where($this->id . ' !=', $id);
}
if ($CI->db->count_all_results($this->table) > 0) {
return $this->_check_uri($uri, $id, ++$count);
} else {
return $new_uri;
}
}
// ------------------------------------------------------------------------
/**
* Get the replacement type
*
* Either a dash or underscore generated off the term.
*
* @return string
*/
private function _get_replacement() {
return ($this->replacement === 'dash') ? '-' : '_';
}
}
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