From 9285c8c66c530196399eb05bb5561c3fa5538335 Mon Sep 17 00:00:00 2001 From: Bharat Mediratta Date: Mon, 21 Dec 2009 20:05:27 -0800 Subject: Updated Kohana to r4724 --- system/config/cache.php | 3 + system/config/database.php | 3 +- system/core/Kohana.php | 39 +- system/core/Kohana_Exception.php | 4 +- system/helpers/form.php | 28 +- system/helpers/inflector.php | 6 +- system/helpers/request.php | 4 +- system/helpers/security.php | 13 +- system/helpers/text.php | 46 +- system/helpers/url.php | 21 +- system/helpers/utf8.php | 2 +- system/libraries/Cache.php | 87 +- system/libraries/Controller.php | 8 +- system/libraries/Database.php | 23 +- system/libraries/Database_Builder.php | 103 +- system/libraries/Database_Mysql.php | 9 +- system/libraries/Database_Mysqli.php | 32 +- system/libraries/Input.php | 8 +- system/libraries/Kohana_PHP_Exception.php | 4 +- system/libraries/ORM.php | 56 +- system/libraries/Profiler.php | 4 +- system/libraries/Router.php | 10 +- system/libraries/Validation.php | 155 +- system/libraries/drivers/Cache/File.php | 4 +- system/libraries/drivers/Cache/Memcache.php | 7 +- system/libraries/drivers/Cache/Xcache.php | 2 +- system/messages/core.php | 9 +- system/messages/validation/default.php | 17 + system/vendor/Markdown.php | 2909 --------------------------- 29 files changed, 458 insertions(+), 3158 deletions(-) create mode 100644 system/messages/validation/default.php delete mode 100644 system/vendor/Markdown.php (limited to 'system') diff --git a/system/config/cache.php b/system/config/cache.php index 68682c0a..76af4f6a 100644 --- a/system/config/cache.php +++ b/system/config/cache.php @@ -19,10 +19,13 @@ * thirty minutes. Specific lifetime can also be set when creating a new cache. * Setting this to 0 will never automatically delete caches. * + * prefix - Adds a prefix to all keys and tags. This can have a severe performance impact. + * */ $config['default'] = array ( 'driver' => 'file', 'params' => array('directory' => APPPATH.'cache', 'gc_probability' => 1000), 'lifetime' => 1800, + 'prefix' => NULL ); diff --git a/system/config/database.php b/system/config/database.php index 2e53fa2b..36e4614c 100644 --- a/system/config/database.php +++ b/system/config/database.php @@ -35,7 +35,8 @@ $config['default'] = array 'host' => 'localhost', 'port' => FALSE, 'socket' => FALSE, - 'database' => 'kohana' + 'database' => 'kohana', + 'params' => NULL, ), 'character_set' => 'utf8', 'table_prefix' => '', diff --git a/system/core/Kohana.php b/system/core/Kohana.php index 5258d635..740adb80 100644 --- a/system/core/Kohana.php +++ b/system/core/Kohana.php @@ -2,7 +2,7 @@ /** * Provides Kohana-specific helper functions. This is where the magic happens! * - * $Id: Kohana.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Kohana.php 4724 2009-12-21 16:28:54Z isaiah $ * * @package Core * @author Kohana Team @@ -45,6 +45,9 @@ abstract class Kohana_Core { protected static $internal_cache_key; protected static $internal_cache_encrypt; + // Server API that PHP is using. Allows testing of different APIs. + public static $server_api = PHP_SAPI; + /** * Sets up the PHP environment. Adds error/exception handling, output * buffering, and adds an auto-loading method for loading classes. @@ -162,6 +165,35 @@ abstract class Kohana_Core { // Set and validate the timezone date_default_timezone_set(Kohana::config('locale.timezone')); + // register_globals is enabled + if (ini_get('register_globals')) + { + if (isset($_REQUEST['GLOBALS'])) + { + // Prevent GLOBALS override attacks + exit('Global variable overload attack.'); + } + + // Destroy the REQUEST global + $_REQUEST = array(); + + // These globals are standard and should not be removed + $preserve = array('GLOBALS', '_REQUEST', '_GET', '_POST', '_FILES', '_COOKIE', '_SERVER', '_ENV', '_SESSION'); + + // This loop has the same effect as disabling register_globals + foreach (array_diff(array_keys($GLOBALS), $preserve) as $key) + { + global $$key; + $$key = NULL; + + // Unset the global variable + unset($GLOBALS[$key], $$key); + } + + // Warn the developer about register globals + Kohana_Log::add('debug', 'Disable register_globals! It is evil and deprecated: http://php.net/register_globals'); + } + // Enable Kohana routing Event::add('system.routing', array('Router', 'find_uri')); Event::add('system.routing', array('Router', 'setup')); @@ -602,7 +634,7 @@ abstract class Kohana_Core { header('Content-Encoding: '.$compress); // Sending Content-Length in CGI can result in unexpected behavior - if (stripos(PHP_SAPI, 'cgi') === FALSE) + if (stripos(Kohana::$server_api, 'cgi') === FALSE) { header('Content-Length: '.strlen($output)); } @@ -876,9 +908,6 @@ abstract class Kohana_Core { $group = explode('.', $key, 2); $group = $group[0]; - // Get locale name - $locale = Kohana::config('locale.language.0'); - if ( ! isset(Kohana::$internal_cache['messages'][$group])) { // Messages for this group diff --git a/system/core/Kohana_Exception.php b/system/core/Kohana_Exception.php index cdb06a62..2eb28f75 100644 --- a/system/core/Kohana_Exception.php +++ b/system/core/Kohana_Exception.php @@ -2,7 +2,7 @@ /** * Kohana Exceptions * - * $Id: Kohana_Exception.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Kohana_Exception.php 4692 2009-12-04 15:59:44Z cbandy $ * * @package Core * @author Kohana Team @@ -197,7 +197,7 @@ class Kohana_Exception_Core extends Exception { echo Kohana_Exception::text($e), "\n"; } - if (PHP_SAPI === 'cli') + if (Kohana::$server_api === 'cli') { // Exit with an error status exit(1); diff --git a/system/helpers/form.php b/system/helpers/form.php index 901edc91..4225b1b6 100644 --- a/system/helpers/form.php +++ b/system/helpers/form.php @@ -2,7 +2,7 @@ /** * Form helper class. * - * $Id: form.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: form.php 4699 2009-12-08 18:45:14Z isaiah $ * * @package Core * @author Kohana Team @@ -421,32 +421,6 @@ class form_Core { if (empty($attr)) return ''; - if (isset($attr['name']) AND empty($attr['id']) AND strpos($attr['name'], '[') === FALSE) - { - if ($type === NULL AND ! empty($attr['type'])) - { - // Set the type by the attributes - $type = $attr['type']; - } - - switch ($type) - { - case 'text': - case 'textarea': - case 'password': - case 'select': - case 'checkbox': - case 'file': - case 'image': - case 'button': - case 'submit': - case 'hidden': - // Only specific types of inputs use name to id matching - $attr['id'] = $attr['name']; - break; - } - } - $order = array ( 'action', diff --git a/system/helpers/inflector.php b/system/helpers/inflector.php index 9bd281db..5a2910c0 100644 --- a/system/helpers/inflector.php +++ b/system/helpers/inflector.php @@ -2,7 +2,7 @@ /** * Inflector helper class. * - * $Id: inflector.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: inflector.php 4722 2009-12-19 17:47:34Z isaiah $ * * @package Core * @author Kohana Team @@ -241,9 +241,9 @@ class inflector_Core { } /** - * Makes an underscored or dashed phrase human-reable. + * Makes an underscored or dashed phrase human-readable. * - * @param string phrase to make human-reable + * @param string phrase to make human-readable * @return string */ public static function humanize($str) diff --git a/system/helpers/request.php b/system/helpers/request.php index 4770d64b..31afee4e 100644 --- a/system/helpers/request.php +++ b/system/helpers/request.php @@ -2,7 +2,7 @@ /** * Request helper class. * - * $Id: request.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: request.php 4692 2009-12-04 15:59:44Z cbandy $ * * @package Core * @author Kohana Team @@ -61,7 +61,7 @@ class request_Core { */ public static function protocol() { - if (PHP_SAPI === 'cli') + if (Kohana::$server_api === 'cli') { return NULL; } diff --git a/system/helpers/security.php b/system/helpers/security.php index 9eb82a58..33e5118e 100644 --- a/system/helpers/security.php +++ b/system/helpers/security.php @@ -2,7 +2,7 @@ /** * Security helper class. * - * $Id: security.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: security.php 4698 2009-12-08 18:39:33Z isaiah $ * * @package Core * @author Kohana Team @@ -34,15 +34,4 @@ class security_Core { return preg_replace('#\s]*)["\']?[^>]*)?>#is', '$1', $str); } - /** - * Remove PHP tags from a string. - * - * @param string string to sanitize - * @return string - */ - public static function encode_php_tags($str) - { - return str_replace(array(''), array('<?', '?>'), $str); - } - } // End security \ No newline at end of file diff --git a/system/helpers/text.php b/system/helpers/text.php index 66bcd243..ed7f9cbf 100644 --- a/system/helpers/text.php +++ b/system/helpers/text.php @@ -2,7 +2,7 @@ /** * Text helper class. * - * $Id: text.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: text.php 4689 2009-12-02 01:39:24Z isaiah $ * * @package Core * @author Kohana Team @@ -298,27 +298,37 @@ class text_Core { */ public static function auto_link_urls($text) { - // Finds all http/https/ftp/ftps links that are not part of an existing html anchor - if (preg_match_all('~\b(?)(?:ht|f)tps?://\S+(?:/|\b)~i', $text, $matches)) - { - foreach ($matches[0] as $match) - { - // Replace each link with an anchor - $text = str_replace($match, html::anchor($match), $text); - } - } - // Find all naked www.links.com (without http://) - if (preg_match_all('~\b(? $name)); + throw new Cache_Exception('The :group: group is not defined in your configuration.', array(':group:' => $name)); } if (is_array($config)) @@ -74,7 +74,7 @@ class Cache_Core { // Load the driver if ( ! Kohana::auto_load($driver)) - throw new Kohana_Exception('The :driver: driver for the :class: library could not be found', + throw new Cache_Exception('The :driver: driver for the :class: library could not be found', array(':driver:' => $this->config['driver'], ':class:' => get_class($this))); // Initialize the driver @@ -82,7 +82,7 @@ class Cache_Core { // Validate the driver if ( ! ($this->driver instanceof Cache_Driver)) - throw new Kohana_Exception('The :driver: driver for the :library: library must implement the :interface: interface', + throw new Cache_Exception('The :driver: driver for the :library: library must implement the :interface: interface', array(':driver:' => $this->config['driver'], ':library:' => get_class($this), ':interface:' => 'Cache_Driver')); Kohana_Log::add('debug', 'Cache Library initialized'); @@ -103,6 +103,16 @@ class Cache_Core { $key = array($key => $value); } + if ($this->config['prefix'] !== NULL) + { + $key = $this->add_prefix($key); + + if ($tags !== NULL) + { + $tags = $this->add_prefix($tags, FALSE); + } + } + return $this->driver->set($key, $tags, $lifetime); } @@ -119,6 +129,17 @@ class Cache_Core { $single = TRUE; } + if ($this->config['prefix'] !== NULL) + { + $keys = $this->add_prefix($keys, FALSE); + + if ( ! $single) + { + return $this->strip_prefix($this->driver->get($keys, $single)); + } + + } + return $this->driver->get($keys, $single); } @@ -132,7 +153,15 @@ class Cache_Core { $tags = array($tags); } - return $this->driver->get_tag($tags); + if ($this->config['prefix'] !== NULL) + { + $tags = $this->add_prefix($tags, FALSE); + return $this->strip_prefix($this->driver->get_tag($tags)); + } + else + { + return $this->driver->get_tag($tags); + } } /** @@ -145,6 +174,11 @@ class Cache_Core { $keys = array($keys); } + if ($this->config['prefix'] !== NULL) + { + $keys = $this->add_prefix($keys, FALSE); + } + return $this->driver->delete($keys); } @@ -158,6 +192,11 @@ class Cache_Core { $tags = array($tags); } + if ($this->config['prefix'] !== NULL) + { + $tags = $this->add_prefix($tags, FALSE); + } + return $this->driver->delete_tag($tags); } @@ -168,4 +207,44 @@ class Cache_Core { { return $this->driver->delete_all(); } + + /** + * Add a prefix to keys or tags + */ + protected function add_prefix($array, $to_key = TRUE) + { + $out = array(); + + foreach($array as $key => $value) + { + if ($to_key) + { + $out[$this->config['prefix'].$key] = $value; + } + else + { + $out[$key] = $this->config['prefix'].$value; + } + } + + return $out; + } + + /** + * Strip a prefix to keys or tags + */ + protected function strip_prefix($array) + { + $out = array(); + + $start = strlen($this->config['prefix']); + + foreach($array as $key => $value) + { + $out[substr($key, $start)] = $value; + } + + return $out; + } + } // End Cache Library \ No newline at end of file diff --git a/system/libraries/Controller.php b/system/libraries/Controller.php index da84bfc1..830c06e5 100644 --- a/system/libraries/Controller.php +++ b/system/libraries/Controller.php @@ -3,7 +3,7 @@ * Kohana Controller class. The controller class must be extended to work * properly, so this class is defined as abstract. * - * $Id: Controller.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Controller.php 4721 2009-12-17 23:02:07Z isaiah $ * * @package Core * @author Kohana Team @@ -27,12 +27,6 @@ abstract class Controller_Core { // Set the instance to the first controller loaded Kohana::$instance = $this; } - - // URI should always be available - $this->uri = URI::instance(); - - // Input should always be available - $this->input = Input::instance(); } /** diff --git a/system/libraries/Database.php b/system/libraries/Database.php index d3716c59..38a38fbf 100644 --- a/system/libraries/Database.php +++ b/system/libraries/Database.php @@ -1,9 +1,9 @@ cache instanceof Cache) + if ($this->cache instanceof Cache AND ($type == NULL OR $type == Database::CROSS_REQUEST)) { // Using cross-request Cache library if ($sql === TRUE) @@ -370,7 +373,7 @@ abstract class Database_Core { $this->cache->delete_all(); } } - elseif (is_array($this->cache)) + elseif (is_array($this->cache) AND ($type == NULL OR $type == Database::PER_REQUEST)) { // Using per-request memory cache if ($sql === TRUE) diff --git a/system/libraries/Database_Builder.php b/system/libraries/Database_Builder.php index 5a5a058c..4e6951e7 100644 --- a/system/libraries/Database_Builder.php +++ b/system/libraries/Database_Builder.php @@ -29,6 +29,7 @@ class Database_Builder_Core { protected $columns = array(); protected $values = array(); protected $type; + protected $distinct = FALSE; // TTL for caching (using Cache library) protected $ttl = FALSE; @@ -77,7 +78,8 @@ class Database_Builder_Core { if ($this->type === Database::SELECT) { // SELECT columns FROM table - $sql = 'SELECT '.$this->compile_select(); + $sql = $this->distinct ? 'SELECT DISTINCT ' : 'SELECT '; + $sql .= $this->compile_select(); if ( ! empty($this->from)) { @@ -146,7 +148,13 @@ class Database_Builder_Core { foreach ($this->select as $alias => $name) { - if (is_string($alias)) + if ($name instanceof Database_Builder) + { + // Using a subquery + $name->db = $this->db; + $vals[] = '('.(string) $name.') AS '.$this->db->quote_column($alias); + } + elseif (is_string($alias)) { $vals[] = $this->db->quote_column($name, $alias); } @@ -374,28 +382,48 @@ class Database_Builder_Core { /** * Add conditions to the HAVING clause (AND) * - * @param mixed Column name or array of columns => vals + * @param mixed Column name or array of triplets * @param string Operation to perform * @param mixed Value * @return Database_Builder */ public function and_having($columns, $op = '=', $value = NULL) { - $this->having[] = array('AND' => array($columns, $op, $value)); + if (is_array($columns)) + { + foreach ($columns as $column) + { + $this->having[] = array('AND' => $column); + } + } + else + { + $this->having[] = array('AND' => array($columns, $op, $value)); + } return $this; } /** * Add conditions to the HAVING clause (OR) * - * @param mixed Column name or array of columns => vals + * @param mixed Column name or array of triplets * @param string Operation to perform * @param mixed Value * @return Database_Builder */ public function or_having($columns, $op = '=', $value = NULL) { - $this->having[] = array('OR' => array($columns, $op, $value)); + if (is_array($columns)) + { + foreach ($columns as $column) + { + $this->having[] = array('OR' => $column); + } + } + else + { + $this->having[] = array('OR' => array($columns, $op, $value)); + } return $this; } @@ -408,13 +436,25 @@ class Database_Builder_Core { */ public function order_by($columns, $direction = NULL) { - if (is_string($columns)) + if (is_array($columns)) { - $columns = array($columns => $direction); + foreach ($columns as $column => $direction) + { + if (is_string($column)) + { + $this->order_by[] = array($column => $direction); + } + else + { + // $direction is the column name when the array key is numeric + $this->order_by[] = array($direction => NULL); + } + } + } + else + { + $this->order_by[] = array($columns => $direction); } - - $this->order_by[] = $columns; - return $this; } @@ -542,28 +582,48 @@ class Database_Builder_Core { /** * Add conditions to the WHERE clause (AND) * - * @param mixed Column name or array of columns => vals + * @param mixed Column name or array of triplets * @param string Operation to perform * @param mixed Value * @return Database_Builder */ public function and_where($columns, $op = '=', $value = NULL) { - $this->where[] = array('AND' => array($columns, $op, $value)); + if (is_array($columns)) + { + foreach ($columns as $column) + { + $this->where[] = array('AND' => $column); + } + } + else + { + $this->where[] = array('AND' => array($columns, $op, $value)); + } return $this; } /** * Add conditions to the WHERE clause (OR) * - * @param mixed Column name or array of columns => vals + * @param mixed Column name or array of triplets * @param string Operation to perform * @param mixed Value * @return Database_Builder */ public function or_where($columns, $op = '=', $value = NULL) { - $this->where[] = array('OR' => array($columns, $op, $value)); + if (is_array($columns)) + { + foreach ($columns as $column) + { + $this->where[] = array('OR' => $column); + } + } + else + { + $this->where[] = array('OR' => array($columns, $op, $value)); + } return $this; } @@ -779,6 +839,19 @@ class Database_Builder_Core { return $this; } + /** + * Create a SELECT query and specify selected columns + * + * @param string|array column name or array(alias => column) + * @return Database_Builder + */ + public function select_distinct($columns = NULL) + { + $this->select($columns); + $this->distinct = TRUE; + return $this; + } + /** * Create an UPDATE query * diff --git a/system/libraries/Database_Mysql.php b/system/libraries/Database_Mysql.php index cb531194..a5775037 100644 --- a/system/libraries/Database_Mysql.php +++ b/system/libraries/Database_Mysql.php @@ -2,7 +2,7 @@ /** * MySQL database connection. * - * $Id: Database_Mysql.php 4684 2009-11-18 14:26:48Z isaiah $ + * $Id: Database_Mysql.php 4712 2009-12-10 21:47:09Z cbandy $ * * @package Kohana * @author Kohana Team @@ -31,16 +31,15 @@ class Database_Mysql_Core extends Database { extract($this->config['connection']); - // Set the connection type - $connect = ($this->config['persistent'] === TRUE) ? 'mysql_pconnect' : 'mysql_connect'; - $host = isset($host) ? $host : $socket; $port = isset($port) ? ':'.$port : ''; try { // Connect to the database - $this->connection = $connect($host.$port, $user, $pass, TRUE); + $this->connection = ($this->config['persistent'] === TRUE) + ? mysql_pconnect($host.$port, $user, $pass, $params) + : mysql_connect($host.$port, $user, $pass, TRUE, $params); } catch (Kohana_PHP_Exception $e) { diff --git a/system/libraries/Database_Mysqli.php b/system/libraries/Database_Mysqli.php index 523fcb19..08ed99df 100644 --- a/system/libraries/Database_Mysqli.php +++ b/system/libraries/Database_Mysqli.php @@ -2,7 +2,7 @@ /** * MySQL database connection. * - * $Id: Database_Mysqli.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Database_Mysqli.php 4712 2009-12-10 21:47:09Z cbandy $ * * @package Kohana * @author Kohana Team @@ -29,29 +29,29 @@ class Database_Mysqli_Core extends Database_Mysql { $host = isset($host) ? $host : $socket; - if($this->connection = new mysqli($host, $user, $pass, $database, $port)) { + $mysqli = mysqli_init(); - if (isset($this->config['character_set'])) - { - // Set the character set - $this->set_charset($this->config['character_set']); - } + if ( ! $mysqli->real_connect($host, $user, $pass, $database, $port, $socket, $params)) + throw new Database_Exception('#:errno: :error', + array(':error' => $mysqli->connect_error, ':errno' => $mysqli->connect_errno)); - // Clear password after successful connect - $this->db_config['connection']['pass'] = NULL; + $this->connection = $mysqli; - return $this->connection; + if (isset($this->config['character_set'])) + { + // Set the character set + $this->set_charset($this->config['character_set']); } - - // Unable to connect to the database - throw new Database_Exception('#:errno: :error', - array(':error' => $this->connection->connect_error, - ':errno' => $this->connection->connect_errno)); } public function disconnect() { - return is_object($this->connection) and $this->connection->close(); + if (is_object($this->connection)) + { + $this->connection->close(); + } + + $this->connection = NULL; } public function set_charset($charset) diff --git a/system/libraries/Input.php b/system/libraries/Input.php index 83f0ed17..04403854 100644 --- a/system/libraries/Input.php +++ b/system/libraries/Input.php @@ -2,7 +2,7 @@ /** * Input library. * - * $Id: Input.php 4680 2009-11-10 01:57:00Z isaiah $ + * $Id: Input.php 4720 2009-12-17 21:15:03Z isaiah $ * * @package Core * @author Kohana Team @@ -54,7 +54,7 @@ class Input_Core { $_COOKIE = Input::clean($_COOKIE); $_SERVER = Input::clean($_SERVER); - if (PHP_SAPI == 'cli') + if (Kohana::$server_api === 'cli') { // Convert command line arguments $_SERVER['argv'] = Input::clean($_SERVER['argv']); @@ -311,7 +311,7 @@ class Input_Core { if (trim($data) === '') return $data; - if ($tool === TRUE) + if (is_bool($tool)) { $tool = 'default'; } @@ -371,7 +371,7 @@ class Input_Core { $data = html_entity_decode($data, ENT_COMPAT, 'UTF-8'); // Remove any attribute starting with "on" or xmlns - $data = preg_replace('#(<[^>]+?[\x00-\x20"\'])(?:on|xmlns)[^>]*+>#iu', '$1>', $data); + $data = preg_replace('#(?:on[a-z]+|xmlns)\s*=\s*[\'"\x00-\x20]?[^\'>"]*[\'"\x00-\x20]?\s?#iu', '', $data); // Remove javascript: and vbscript: protocols $data = preg_replace('#([a-z]*)[\x00-\x20]*=[\x00-\x20]*([`\'"]*)[\x00-\x20]*j[\x00-\x20]*a[\x00-\x20]*v[\x00-\x20]*a[\x00-\x20]*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:#iu', '$1=$2nojavascript...', $data); diff --git a/system/libraries/Kohana_PHP_Exception.php b/system/libraries/Kohana_PHP_Exception.php index fca5b30b..019c686b 100644 --- a/system/libraries/Kohana_PHP_Exception.php +++ b/system/libraries/Kohana_PHP_Exception.php @@ -2,7 +2,7 @@ /** * Kohana PHP Error Exceptions * - * $Id: Kohana_PHP_Exception.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Kohana_PHP_Exception.php 4687 2009-11-30 21:59:26Z isaiah $ * * @package Core * @author Kohana Team @@ -89,7 +89,7 @@ class Kohana_PHP_Exception_Core extends Kohana_Exception { */ public static function shutdown_handler() { - if (Kohana_PHP_Exception::$enabled AND $error = error_get_last()) + if (Kohana_PHP_Exception::$enabled AND $error = error_get_last() AND (error_reporting() & $error['type'])) { // Fake an exception for nice debugging Kohana_Exception::handle(new Kohana_PHP_Exception($error['type'], $error['message'], $error['file'], $error['line'])); diff --git a/system/libraries/ORM.php b/system/libraries/ORM.php index eff22fc0..2f2feed5 100644 --- a/system/libraries/ORM.php +++ b/system/libraries/ORM.php @@ -8,7 +8,7 @@ * [ref-orm]: http://wikipedia.org/wiki/Object-relational_mapping * [ref-act]: http://wikipedia.org/wiki/Active_record * - * $Id: ORM.php 4682 2009-11-11 20:53:23Z isaiah $ + * $Id: ORM.php 4711 2009-12-10 20:40:52Z isaiah $ * * @package ORM * @author Kohana Team @@ -102,7 +102,7 @@ class ORM_Core { $this->object_name = strtolower(substr(get_class($this), 0, -6)); $this->object_plural = inflector::plural($this->object_name); - if (!isset($this->sorting)) + if ( ! isset($this->sorting)) { // Default sorting $this->sorting = array($this->primary_key => 'asc'); @@ -119,7 +119,7 @@ class ORM_Core { // Load an object $this->_load_values((array) $id); } - elseif (!empty($id)) + elseif ( ! empty($id)) { // Set the object's primary key, but don't load it until needed $this->object[$this->primary_key] = $id; @@ -234,7 +234,7 @@ class ORM_Core { switch ($num_args) { case 0: - if (in_array($method, array('open', 'close', 'cache'))) + if (in_array($method, array('open', 'and_open', 'or_open', 'close', 'cache'))) { // Should return ORM, not Database $this->db_builder->$method(); @@ -320,12 +320,12 @@ class ORM_Core { } // Foreign key lies in this table (this model belongs_to target model) - $where = array($model->foreign_key(TRUE) => $this->object[$this->foreign_key($column)]); + $where = array($model->foreign_key(TRUE), '=', $this->object[$this->foreign_key($column)]); } else { // Foreign key lies in the target table (this model has_one target model) - $where = array($this->foreign_key($column, $model->table_name) => $this->primary_key_value); + $where = array($this->foreign_key($column, $model->table_name), '=', $this->primary_key_value); } // one<>alias:one relationship @@ -524,16 +524,6 @@ class ORM_Core { unset($this->object[$column], $this->changed[$column], $this->related[$column]); } - /** - * Displays the primary key of a model when it is converted to a string. - * - * @return string - */ - public function __toString() - { - return (string) $this->primary_key_value; - } - /** * Returns the values of this object as an array. * @@ -665,7 +655,7 @@ class ORM_Core { if (is_array($id)) { // Search for all clauses - $this->db_builder->where($id); + $this->db_builder->where(array($id)); } else { @@ -767,6 +757,9 @@ class ORM_Core { ORM_Validation_Exception::handle_validation($this->table_name, $array); } + // Fields may have been modified by filters + $this->object = array_merge($this->object, $array->getArrayCopy()); + // Return validation status return $this; } @@ -782,8 +775,10 @@ class ORM_Core { if ( ! empty($this->changed)) { // Require model validation before saving - if (!$this->_valid) + if ( ! $this->_valid) + { $this->validate(); + } $data = array(); foreach ($this->changed as $column) @@ -881,8 +876,8 @@ class ORM_Core { } // Foreign keys for the join table - $object_fk = $this->foreign_key(NULL); - $related_fk = $model->foreign_key(NULL); + $object_fk = $this->foreign_key($join_table); + $related_fk = $model->foreign_key($join_table); if ( ! empty($added)) { @@ -909,6 +904,12 @@ class ORM_Core { } } + if ($this->saved() === TRUE) + { + // Clear the per-request database cache + $this->db->clear_cache(NULL, Database::PER_REQUEST); + } + return $this; } @@ -933,6 +934,9 @@ class ORM_Core { ->where($this->primary_key, '=', $id) ->execute($this->db); + // Clear the per-request database cache + $this->db->clear_cache(NULL, Database::PER_REQUEST); + return $this->clear(); } @@ -965,6 +969,9 @@ class ORM_Core { return $this; } + // Clear the per-request database cache + $this->db->clear_cache(NULL, Database::PER_REQUEST); + return $this->clear(); } @@ -1154,12 +1161,13 @@ class ORM_Core { * * @chainable * @param string SQL query to clear + * @param integer Type of cache to clear, Database::CROSS_REQUEST or Database::PER_REQUEST * @return ORM */ - public function clear_cache($sql = NULL) + public function clear_cache($sql = NULL, $type = NULL) { // Proxy to database - $this->db->clear_cache($sql); + $this->db->clear_cache($sql, $type); ORM::$column_cache = array(); @@ -1550,9 +1558,9 @@ class ORM_Core { */ protected function load_relations($table, ORM $model) { - $result = db::select(array('id' => $model->foreign_key(NULL))) + $result = db::select(array('id' => $model->foreign_key($table))) ->from($table) - ->where($this->foreign_key(NULL, $table), '=', $this->primary_key_value) + ->where($this->foreign_key($table, $table), '=', $this->primary_key_value) ->execute($this->db) ->as_object(); diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php index b7a5ecae..940e365d 100644 --- a/system/libraries/Profiler.php +++ b/system/libraries/Profiler.php @@ -8,7 +8,7 @@ * POST Data - The name and values of any POST data submitted to the current page. * Cookie Data - All cookies sent for the current request. * - * $Id: Profiler.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Profiler.php 4719 2009-12-17 04:31:48Z isaiah $ * * @package Profiler * @author Kohana Team @@ -101,7 +101,7 @@ class Profiler_Core { // Don't display if there's no profiles if (empty(Profiler::$profiles)) - return $output; + return Kohana::$output; $styles = ''; foreach (Profiler::$profiles as $profile) diff --git a/system/libraries/Router.php b/system/libraries/Router.php index 82dbb9b5..18e01af2 100644 --- a/system/libraries/Router.php +++ b/system/libraries/Router.php @@ -2,7 +2,7 @@ /** * Router * - * $Id: Router.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Router.php 4693 2009-12-04 17:11:16Z cbandy $ * * @package Core * @author Kohana Team @@ -38,7 +38,7 @@ class Router_Core { if ( ! empty($_SERVER['QUERY_STRING'])) { // Set the query string to the current query string - Router::$query_string = '?'.trim(urldecode($_SERVER['QUERY_STRING']), '&/'); + Router::$query_string = '?'.urldecode(trim($_SERVER['QUERY_STRING'], '&')); } if (Router::$routes === NULL) @@ -173,7 +173,7 @@ class Router_Core { */ public static function find_uri() { - if (PHP_SAPI === 'cli') + if (Kohana::$server_api === 'cli') { // Command line requires a bit of hacking if (isset($_SERVER['argv'][1])) @@ -181,9 +181,9 @@ class Router_Core { Router::$current_uri = $_SERVER['argv'][1]; // Remove GET string from segments - if (($query = strpos(Router::$current_uri, '?')) !== FALSE) + if (strpos(Router::$current_uri, '?') !== FALSE) { - list (Router::$current_uri, $query) = explode('?', Router::$current_uri, 2); + list(Router::$current_uri, $query) = explode('?', Router::$current_uri, 2); // Parse the query string into $_GET parse_str($query, $_GET); diff --git a/system/libraries/Validation.php b/system/libraries/Validation.php index f340e63c..47f34584 100644 --- a/system/libraries/Validation.php +++ b/system/libraries/Validation.php @@ -2,7 +2,7 @@ /** * Validation library. * - * $Id: Validation.php 4679 2009-11-10 01:45:52Z isaiah $ + * $Id: Validation.php 4713 2009-12-10 22:25:38Z isaiah $ * * @package Validation * @author Kohana Team @@ -26,12 +26,12 @@ class Validation_Core extends ArrayObject { protected $errors = array(); protected $messages = array(); + // Field labels + protected $labels = array(); + // Fields that are expected to be arrays protected $array_fields = array(); - // Checks if there is data to validate. - protected $submitted; - /** * Creates a new Validation instance. * @@ -52,9 +52,6 @@ class Validation_Core extends ArrayObject { */ public function __construct(array $array) { - // The array is submitted if the array is not empty - $this->submitted = ! empty($array); - parent::__construct($array, ArrayObject::ARRAY_AS_PROPS | ArrayObject::STD_PROP_LIST); } @@ -85,21 +82,6 @@ class Validation_Core extends ArrayObject { return $copy; } - /** - * Test if the data has been submitted. - * - * @return boolean - */ - public function submitted($value = NULL) - { - if (is_bool($value)) - { - $this->submitted = $value; - } - - return $this->submitted; - } - /** * Returns an array of all the field names that have filters, rules, or callbacks. * @@ -196,6 +178,42 @@ class Validation_Core extends ArrayObject { return $this; } + /** + * Sets or overwrites the label name for a field. + * + * @param string field name + * @param string label + * @return $this + */ + public function label($field, $label = NULL) + { + if ($label === NULL AND ($field !== TRUE OR $field !== '*') AND ! isset($this->labels[$field])) + { + // Set the field label to the field name + $this->labels[$field] = ucfirst(preg_replace('/[^\pL]+/u', ' ', $field)); + } + elseif ($label !== NULL) + { + // Set the label for this field + $this->labels[$field] = $label; + } + + return $this; + } + + /** + * Sets labels using an array. + * + * @param array list of field => label names + * @return $this + */ + public function labels(array $labels) + { + $this->labels = $labels + $this->labels; + + return $this; + } + /** * Converts a filter, rule, or callback into a fully-qualified callback array. * @@ -338,6 +356,9 @@ class Validation_Core extends ArrayObject { $rules = func_get_args(); $rules = array_slice($rules, 1); + // Set a default field label + $this->label($field); + if ($field === TRUE) { // Use wildcard @@ -412,6 +433,9 @@ class Validation_Core extends ArrayObject { $callbacks = func_get_args(); $callbacks = array_slice($callbacks, 1); + // Set a default field label + $this->label($field); + if ($field === TRUE) { // Use wildcard @@ -471,9 +495,6 @@ class Validation_Core extends ArrayObject { } } - if ($this->submitted === FALSE) - return FALSE; - foreach ($this->rules as $field => $callbacks) { foreach ($callbacks as $callback) @@ -534,6 +555,7 @@ class Validation_Core extends ArrayObject { if (($result == $is_false)) { + $rule = $is_false ? '!'.$rule : $rule; $this->add_error($field, $rule, $args); // Stop validating this field when an error is found @@ -618,46 +640,6 @@ class Validation_Core extends ArrayObject { return $this; } - /** - * Sets or returns the message for an input. - * - * @chainable - * @param string input key - * @param string message to set - * @return string|object - */ - public function message($input = NULL, $message = NULL) - { - if ($message === NULL) - { - if ($input === NULL) - { - $messages = array(); - $keys = array_keys($this->messages); - - foreach ($keys as $input) - { - $messages[] = $this->message($input); - } - - return implode("\n", $messages); - } - - // Return nothing if no message exists - if (empty($this->messages[$input])) - return ''; - - // Return the HTML message string - return $this->messages[$input]; - } - else - { - $this->messages[$input] = $message; - } - - return $this; - } - /** * Return the errors array. * @@ -677,18 +659,49 @@ class Validation_Core extends ArrayObject { } else { - $errors = array(); foreach ($this->errors as $input => $error) { - // Key for this input error - $key = "$file.$input.$error[0]"; + // Locations to check for error messages + $error_locations = array + ( + "validation/{$file}.{$input}.{$error[0]}", + "validation/{$file}.{$input}.default", + "validation/default.{$error[0]}" + ); + + if (($message = Kohana::message($error_locations[0])) !== $error_locations[0]) + { + // Found a message for this field and error + } + elseif (($message = Kohana::message($error_locations[1])) !== $error_locations[1]) + { + // Found a default message for this field + } + elseif (($message = Kohana::message($error_locations[2])) !== $error_locations[2]) + { + // Found a default message for this error + } + else + { + // No message exists, display the path expected + $message = "validation/{$file}.{$input}.{$error[0]}"; + } - if (($errors[$input] = Kohana::message('validation/'.$key, $error[1])) === $key) + // Start the translation values list + $values = array(':field' => __($this->labels[$input])); + + if ( ! empty($error[1])) { - // Get the default error message - $errors[$input] = Kohana::message("$file.$input.default"); + foreach ($error[1] as $key => $value) + { + // Add each parameter as a numbered value, starting from 1 + $values[':param'.($key + 1)] = __($value); + } } + + // Translate the message using the default language + $errors[$input] = __($message, $values); } return $errors; diff --git a/system/libraries/drivers/Cache/File.php b/system/libraries/drivers/Cache/File.php index fc20c22d..d6ec0378 100644 --- a/system/libraries/drivers/Cache/File.php +++ b/system/libraries/drivers/Cache/File.php @@ -183,7 +183,7 @@ class Cache_File_Driver extends Cache_Driver { // Get the id from the filename list($key, $junk) = explode('~', basename($path), 2); - if (($data = $this->get($key)) !== FALSE) + if (($data = $this->get($key, TRUE)) !== FALSE) { // Add the result to the array $result[$key] = $data; @@ -211,7 +211,7 @@ class Cache_File_Driver extends Cache_Driver { // Remove the cache file if ( ! unlink($path)) { - Kohana::log('error', 'Cache: Unable to delete cache file: '.$path); + Kohana_Log::add('error', 'Cache: Unable to delete cache file: '.$path); $success = FALSE; } } diff --git a/system/libraries/drivers/Cache/Memcache.php b/system/libraries/drivers/Cache/Memcache.php index 636191d4..13d61d82 100644 --- a/system/libraries/drivers/Cache/Memcache.php +++ b/system/libraries/drivers/Cache/Memcache.php @@ -17,7 +17,7 @@ class Cache_Memcache_Driver extends Cache_Driver { public function __construct($config) { if ( ! extension_loaded('memcache')) - throw new Kohana_Exception('The memcache PHP extension must be loaded to use this driver.'); + throw new Cache_Exception('The memcache PHP extension must be loaded to use this driver.'); ini_set('memcache.allow_failover', (isset($config['allow_failover']) AND $config['allow_failover']) ? TRUE : FALSE); @@ -79,7 +79,10 @@ class Cache_Memcache_Driver extends Cache_Driver { if ($single) { - return ($items === FALSE OR count($items) > 0) ? current($items) : NULL; + if ($items === FALSE) + return NULL; + + return (count($items) > 0) ? current($items) : NULL; } else { diff --git a/system/libraries/drivers/Cache/Xcache.php b/system/libraries/drivers/Cache/Xcache.php index ad11e6d7..4c08405e 100644 --- a/system/libraries/drivers/Cache/Xcache.php +++ b/system/libraries/drivers/Cache/Xcache.php @@ -16,7 +16,7 @@ class Cache_Xcache_Driver extends Cache_Driver { public function __construct($config) { if ( ! extension_loaded('xcache')) - throw new Kohana_Exception('The xcache PHP extension must be loaded to use this driver.'); + throw new Cache_Exception('The xcache PHP extension must be loaded to use this driver.'); $this->config = $config; } diff --git a/system/messages/core.php b/system/messages/core.php index 4bf6ee8c..64f897e8 100644 --- a/system/messages/core.php +++ b/system/messages/core.php @@ -8,7 +8,6 @@ $messages = array E_PAGE_NOT_FOUND => __('Page Not Found'), // __('The requested page was not found. It may have moved, been deleted, or archived.'), E_DATABASE_ERROR => __('Database Error'), // __('A database error occurred while performing the requested procedure. Please review the database error below for more information.'), E_RECOVERABLE_ERROR => __('Recoverable Error'), // __('An error was detected which prevented the loading of this page. If this problem persists, please contact the website administrator.'), - E_ERROR => __('Fatal Error'), E_COMPILE_ERROR => __('Fatal Error'), E_CORE_ERROR => __('Fatal Error'), @@ -29,4 +28,10 @@ $messages = array 'driver' => 'driver', 'model' => 'model', 'view' => 'view', -); \ No newline at end of file +); + +// E_DEPRECATED is only defined in PHP >= 5.3.0 +if (defined('E_DEPRECATED')) +{ + $messages['errors'][E_DEPRECATED] = __('Deprecated'); +} \ No newline at end of file diff --git a/system/messages/validation/default.php b/system/messages/validation/default.php new file mode 100644 index 00000000..2c59fa06 --- /dev/null +++ b/system/messages/validation/default.php @@ -0,0 +1,17 @@ + 'The :field field is required', + 'length' => 'The :field field must be between :param1 and :param2 characters long', + 'depends_on' => 'The :field field requires the :param1 field', + 'matches' => 'The :field field must be the same as :param1', + 'email' => 'The :field field must be a valid email address', + 'decimal' => 'The :field field must be a decimal with :param1 places', + 'digit' => 'The :field field must be a digit', + 'in_array' => 'The :field field must be one of the available options', + 'alpha_numeric' => 'The :field field must consist only of alphabetical or numeric characters', + 'alpha_dash ' => 'The :field field must consist only of alphabetical, numeric, underscore and dash characters', + 'numeric ' => 'The :field field must be a valid number', + 'url' => 'The :field field must be a valid url', + 'phone' => 'The :field field must be a valid phone number', +); diff --git a/system/vendor/Markdown.php b/system/vendor/Markdown.php deleted file mode 100644 index b649f6c1..00000000 --- a/system/vendor/Markdown.php +++ /dev/null @@ -1,2909 +0,0 @@ - -# -# Original Markdown -# Copyright (c) 2004-2006 John Gruber -# -# - - -define( 'MARKDOWN_VERSION', "1.0.1m" ); # Sat 21 Jun 2008 -define( 'MARKDOWNEXTRA_VERSION', "1.2.3" ); # Wed 31 Dec 2008 - - -# -# Global default settings: -# - -# Change to ">" for HTML output -@define( 'MARKDOWN_EMPTY_ELEMENT_SUFFIX', " />"); - -# Define the width of a tab for code blocks. -@define( 'MARKDOWN_TAB_WIDTH', 4 ); - -# Optional title attribute for footnote links and backlinks. -@define( 'MARKDOWN_FN_LINK_TITLE', "" ); -@define( 'MARKDOWN_FN_BACKLINK_TITLE', "" ); - -# Optional class attribute for footnote links and backlinks. -@define( 'MARKDOWN_FN_LINK_CLASS', "" ); -@define( 'MARKDOWN_FN_BACKLINK_CLASS', "" ); - - -# -# WordPress settings: -# - -# Change to false to remove Markdown from posts and/or comments. -@define( 'MARKDOWN_WP_POSTS', true ); -@define( 'MARKDOWN_WP_COMMENTS', true ); - - - -### Standard Function Interface ### - -@define( 'MARKDOWN_PARSER_CLASS', 'MarkdownExtra_Parser' ); - -function Markdown($text) { -# -# Initialize the parser and return the result of its transform method. -# - # Setup static parser variable. - static $parser; - if (!isset($parser)) { - $parser_class = MARKDOWN_PARSER_CLASS; - $parser = new $parser_class; - } - - # Transform text using parser. - return $parser->transform($text); -} - - -### WordPress Plugin Interface ### - -/* -Plugin Name: Markdown Extra -Plugin URI: http://www.michelf.com/projects/php-markdown/ -Description: Markdown syntax allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by John Gruber. More... -Version: 1.2.2 -Author: Michel Fortin -Author URI: http://www.michelf.com/ -*/ - -if (isset($wp_version)) { - # More details about how it works here: - # - - # Post content and excerpts - # - Remove WordPress paragraph generator. - # - Run Markdown on excerpt, then remove all tags. - # - Add paragraph tag around the excerpt, but remove it for the excerpt rss. - if (MARKDOWN_WP_POSTS) { - remove_filter('the_content', 'wpautop'); - remove_filter('the_content_rss', 'wpautop'); - remove_filter('the_excerpt', 'wpautop'); - add_filter('the_content', 'mdwp_MarkdownPost', 6); - add_filter('the_content_rss', 'mdwp_MarkdownPost', 6); - add_filter('get_the_excerpt', 'mdwp_MarkdownPost', 6); - add_filter('get_the_excerpt', 'trim', 7); - add_filter('the_excerpt', 'mdwp_add_p'); - add_filter('the_excerpt_rss', 'mdwp_strip_p'); - - remove_filter('content_save_pre', 'balanceTags', 50); - remove_filter('excerpt_save_pre', 'balanceTags', 50); - add_filter('the_content', 'balanceTags', 50); - add_filter('get_the_excerpt', 'balanceTags', 9); - } - - # Add a footnote id prefix to posts when inside a loop. - function mdwp_MarkdownPost($text) { - static $parser; - if (!$parser) { - $parser_class = MARKDOWN_PARSER_CLASS; - $parser = new $parser_class; - } - if (is_single() || is_page() || is_feed()) { - $parser->fn_id_prefix = ""; - } else { - $parser->fn_id_prefix = get_the_ID() . "."; - } - return $parser->transform($text); - } - - # Comments - # - Remove WordPress paragraph generator. - # - Remove WordPress auto-link generator. - # - Scramble important tags before passing them to the kses filter. - # - Run Markdown on excerpt then remove paragraph tags. - if (MARKDOWN_WP_COMMENTS) { - remove_filter('comment_text', 'wpautop', 30); - remove_filter('comment_text', 'make_clickable'); - add_filter('pre_comment_content', 'Markdown', 6); - add_filter('pre_comment_content', 'mdwp_hide_tags', 8); - add_filter('pre_comment_content', 'mdwp_show_tags', 12); - add_filter('get_comment_text', 'Markdown', 6); - add_filter('get_comment_excerpt', 'Markdown', 6); - add_filter('get_comment_excerpt', 'mdwp_strip_p', 7); - - global $mdwp_hidden_tags, $mdwp_placeholders; - $mdwp_hidden_tags = explode(' ', - '
    • '); - $mdwp_placeholders = explode(' ', str_rot13( - 'pEj07ZbbBZ U1kqgh4w4p pre2zmeN6K QTi31t9pre ol0MP1jzJR '. - 'ML5IjmbRol ulANi1NsGY J7zRLJqPul liA8ctl16T K9nhooUHli')); - } - - function mdwp_add_p($text) { - if (!preg_match('{^$|^<(p|ul|ol|dl|pre|blockquote)>}i', $text)) { - $text = '

    '.$text.'

    '; - $text = preg_replace('{\n{2,}}', "

    \n\n

    ", $text); - } - return $text; - } - - function mdwp_strip_p($t) { return preg_replace('{}i', '', $t); } - - function mdwp_hide_tags($text) { - global $mdwp_hidden_tags, $mdwp_placeholders; - return str_replace($mdwp_hidden_tags, $mdwp_placeholders, $text); - } - function mdwp_show_tags($text) { - global $mdwp_hidden_tags, $mdwp_placeholders; - return str_replace($mdwp_placeholders, $mdwp_hidden_tags, $text); - } -} - - -### bBlog Plugin Info ### - -function identify_modifier_markdown() { - return array( - 'name' => 'markdown', - 'type' => 'modifier', - 'nicename' => 'PHP Markdown Extra', - 'description' => 'A text-to-HTML conversion tool for web writers', - 'authors' => 'Michel Fortin and John Gruber', - 'licence' => 'GPL', - 'version' => MARKDOWNEXTRA_VERSION, - 'help' => 'Markdown syntax allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by John Gruber. More...', - ); -} - - -### Smarty Modifier Interface ### - -function smarty_modifier_markdown($text) { - return Markdown($text); -} - - -### Textile Compatibility Mode ### - -# Rename this file to "classTextile.php" and it can replace Textile everywhere. - -if (strcasecmp(substr(__FILE__, -16), "classTextile.php") == 0) { - # Try to include PHP SmartyPants. Should be in the same directory. - @include_once 'smartypants.php'; - # Fake Textile class. It calls Markdown instead. - class Textile { - function TextileThis($text, $lite='', $encode='') { - if ($lite == '' && $encode == '') $text = Markdown($text); - if (function_exists('SmartyPants')) $text = SmartyPants($text); - return $text; - } - # Fake restricted version: restrictions are not supported for now. - function TextileRestricted($text, $lite='', $noimage='') { - return $this->TextileThis($text, $lite); - } - # Workaround to ensure compatibility with TextPattern 4.0.3. - function blockLite($text) { return $text; } - } -} - - - -# -# Markdown Parser Class -# - -class Markdown_Parser { - - # Regex to match balanced [brackets]. - # Needed to insert a maximum bracked depth while converting to PHP. - var $nested_brackets_depth = 6; - var $nested_brackets_re; - - var $nested_url_parenthesis_depth = 4; - var $nested_url_parenthesis_re; - - # Table of hash values for escaped characters: - var $escape_chars = '\`*_{}[]()>#+-.!'; - var $escape_chars_re; - - # Change to ">" for HTML output. - var $empty_element_suffix = MARKDOWN_EMPTY_ELEMENT_SUFFIX; - var $tab_width = MARKDOWN_TAB_WIDTH; - - # Change to `true` to disallow markup or entities. - var $no_markup = false; - var $no_entities = false; - - # Predefined urls and titles for reference links and images. - var $predef_urls = array(); - var $predef_titles = array(); - - - function Markdown_Parser() { - # - # Constructor function. Initialize appropriate member variables. - # - $this->_initDetab(); - $this->prepareItalicsAndBold(); - - $this->nested_brackets_re = - str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth). - str_repeat('\])*', $this->nested_brackets_depth); - - $this->nested_url_parenthesis_re = - str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth). - str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth); - - $this->escape_chars_re = '['.preg_quote($this->escape_chars).']'; - - # Sort document, block, and span gamut in ascendent priority order. - asort($this->document_gamut); - asort($this->block_gamut); - asort($this->span_gamut); - } - - - # Internal hashes used during transformation. - var $urls = array(); - var $titles = array(); - var $html_hashes = array(); - - # Status flag to avoid invalid nesting. - var $in_anchor = false; - - - function setup() { - # - # Called before the transformation process starts to setup parser - # states. - # - # Clear global hashes. - $this->urls = $this->predef_urls; - $this->titles = $this->predef_titles; - $this->html_hashes = array(); - - $in_anchor = false; - } - - function teardown() { - # - # Called after the transformation process to clear any variable - # which may be taking up memory unnecessarly. - # - $this->urls = array(); - $this->titles = array(); - $this->html_hashes = array(); - } - - - function transform($text) { - # - # Main function. Performs some preprocessing on the input text - # and pass it through the document gamut. - # - $this->setup(); - - # Remove UTF-8 BOM and marker character in input, if present. - $text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text); - - # Standardize line endings: - # DOS to Unix and Mac to Unix - $text = preg_replace('{\r\n?}', "\n", $text); - - # Make sure $text ends with a couple of newlines: - $text .= "\n\n"; - - # Convert all tabs to spaces. - $text = $this->detab($text); - - # Turn block-level HTML blocks into hash entries - $text = $this->hashHTMLBlocks($text); - - # Strip any lines consisting only of spaces and tabs. - # This makes subsequent regexen easier to write, because we can - # match consecutive blank lines with /\n+/ instead of something - # contorted like /[ ]*\n+/ . - $text = preg_replace('/^[ ]+$/m', '', $text); - - # Run document gamut methods. - foreach ($this->document_gamut as $method => $priority) { - $text = $this->$method($text); - } - - $this->teardown(); - - return $text . "\n"; - } - - var $document_gamut = array( - # Strip link definitions, store in hashes. - "stripLinkDefinitions" => 20, - - "runBasicBlockGamut" => 30, - ); - - - function stripLinkDefinitions($text) { - # - # Strips link definitions from text, stores the URLs and titles in - # hash references. - # - $less_than_tab = $this->tab_width - 1; - - # Link defs are in the form: ^[id]: url "optional title" - $text = preg_replace_callback('{ - ^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?: # id = $1 - [ ]* - \n? # maybe *one* newline - [ ]* - ? # url = $2 - [ ]* - \n? # maybe one newline - [ ]* - (?: - (?<=\s) # lookbehind for whitespace - ["(] - (.*?) # title = $3 - [")] - [ ]* - )? # title is optional - (?:\n+|\Z) - }xm', - array(&$this, '_stripLinkDefinitions_callback'), - $text); - return $text; - } - function _stripLinkDefinitions_callback($matches) { - $link_id = strtolower($matches[1]); - $this->urls[$link_id] = $matches[2]; - $this->titles[$link_id] =& $matches[3]; - return ''; # String that will replace the block - } - - - function hashHTMLBlocks($text) { - if ($this->no_markup) return $text; - - $less_than_tab = $this->tab_width - 1; - - # Hashify HTML blocks: - # We only want to do this for block-level HTML tags, such as headers, - # lists, and tables. That's because we still want to wrap

    s around - # "paragraphs" that are wrapped in non-block-level tags, such as anchors, - # phrase emphasis, and spans. The list of tags we're looking for is - # hard-coded: - # - # * List "a" is made of tags which can be both inline or block-level. - # These will be treated block-level when the start tag is alone on - # its line, otherwise they're not matched here and will be taken as - # inline later. - # * List "b" is made of tags which are always block-level; - # - $block_tags_a_re = 'ins|del'; - $block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'. - 'script|noscript|form|fieldset|iframe|math'; - - # Regular expression for the content of a block tag. - $nested_tags_level = 4; - $attr = ' - (?> # optional tag attributes - \s # starts with whitespace - (?> - [^>"/]+ # text outside quotes - | - /+(?!>) # slash not followed by ">" - | - "[^"]*" # text inside double quotes (tolerate ">") - | - \'[^\']*\' # text inside single quotes (tolerate ">") - )* - )? - '; - $content = - str_repeat(' - (?> - [^<]+ # content without tag - | - <\2 # nested opening tag - '.$attr.' # attributes - (?> - /> - | - >', $nested_tags_level). # end of opening tag - '.*?'. # last level nested tag content - str_repeat(' - # closing nested tag - ) - | - <(?!/\2\s*> # other tags with a different name - ) - )*', - $nested_tags_level); - $content2 = str_replace('\2', '\3', $content); - - # First, look for nested blocks, e.g.: - #

    - #
    - # tags for inner block must be indented. - #
    - #
    - # - # The outermost tags must start at the left margin for this to match, and - # the inner nested divs must be indented. - # We need to do this before the next, more liberal match, because the next - # match will start at the first `
    ` and stop at the first `
    `. - $text = preg_replace_callback('{(?> - (?> - (?<=\n\n) # Starting after a blank line - | # or - \A\n? # the beginning of the doc - ) - ( # save in $1 - - # Match from `\n` to `\n`, handling nested tags - # in between. - - [ ]{0,'.$less_than_tab.'} - <('.$block_tags_b_re.')# start tag = $2 - '.$attr.'> # attributes followed by > and \n - '.$content.' # content, support nesting - # the matching end tag - [ ]* # trailing spaces/tabs - (?=\n+|\Z) # followed by a newline or end of document - - | # Special version for tags of group a. - - [ ]{0,'.$less_than_tab.'} - <('.$block_tags_a_re.')# start tag = $3 - '.$attr.'>[ ]*\n # attributes followed by > - '.$content2.' # content, support nesting - # the matching end tag - [ ]* # trailing spaces/tabs - (?=\n+|\Z) # followed by a newline or end of document - - | # Special case just for
    . It was easier to make a special - # case than to make the other regex more complicated. - - [ ]{0,'.$less_than_tab.'} - <(hr) # start tag = $2 - '.$attr.' # attributes - /?> # the matching end tag - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - | # Special case for standalone HTML comments: - - [ ]{0,'.$less_than_tab.'} - (?s: - - ) - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - | # PHP and ASP-style processor instructions ( - ) - [ ]* - (?=\n{2,}|\Z) # followed by a blank line or end of document - - ) - )}Sxmi', - array(&$this, '_hashHTMLBlocks_callback'), - $text); - - return $text; - } - function _hashHTMLBlocks_callback($matches) { - $text = $matches[1]; - $key = $this->hashBlock($text); - return "\n\n$key\n\n"; - } - - - function hashPart($text, $boundary = 'X') { - # - # Called whenever a tag must be hashed when a function insert an atomic - # element in the text stream. Passing $text to through this function gives - # a unique text-token which will be reverted back when calling unhash. - # - # The $boundary argument specify what character should be used to surround - # the token. By convension, "B" is used for block elements that needs not - # to be wrapped into paragraph tags at the end, ":" is used for elements - # that are word separators and "X" is used in the general case. - # - # Swap back any tag hash found in $text so we do not have to `unhash` - # multiple times at the end. - $text = $this->unhash($text); - - # Then hash the block. - static $i = 0; - $key = "$boundary\x1A" . ++$i . $boundary; - $this->html_hashes[$key] = $text; - return $key; # String that will replace the tag. - } - - - function hashBlock($text) { - # - # Shortcut function for hashPart with block-level boundaries. - # - return $this->hashPart($text, 'B'); - } - - - var $block_gamut = array( - # - # These are all the transformations that form block-level - # tags like paragraphs, headers, and list items. - # - "doHeaders" => 10, - "doHorizontalRules" => 20, - - "doLists" => 40, - "doCodeBlocks" => 50, - "doBlockQuotes" => 60, - ); - - function runBlockGamut($text) { - # - # Run block gamut tranformations. - # - # We need to escape raw HTML in Markdown source before doing anything - # else. This need to be done for each block, and not only at the - # begining in the Markdown function since hashed blocks can be part of - # list items and could have been indented. Indented blocks would have - # been seen as a code block in a previous pass of hashHTMLBlocks. - $text = $this->hashHTMLBlocks($text); - - return $this->runBasicBlockGamut($text); - } - - function runBasicBlockGamut($text) { - # - # Run block gamut tranformations, without hashing HTML blocks. This is - # useful when HTML blocks are known to be already hashed, like in the first - # whole-document pass. - # - foreach ($this->block_gamut as $method => $priority) { - $text = $this->$method($text); - } - - # Finally form paragraph and restore hashed blocks. - $text = $this->formParagraphs($text); - - return $text; - } - - - function doHorizontalRules($text) { - # Do Horizontal Rules: - return preg_replace( - '{ - ^[ ]{0,3} # Leading space - ([-*_]) # $1: First marker - (?> # Repeated marker group - [ ]{0,2} # Zero, one, or two spaces. - \1 # Marker character - ){2,} # Group repeated at least twice - [ ]* # Tailing spaces - $ # End of line. - }mx', - "\n".$this->hashBlock("empty_element_suffix")."\n", - $text); - } - - - var $span_gamut = array( - # - # These are all the transformations that occur *within* block-level - # tags like paragraphs, headers, and list items. - # - # Process character escapes, code spans, and inline HTML - # in one shot. - "parseSpan" => -30, - - # Process anchor and image tags. Images must come first, - # because ![foo][f] looks like an anchor. - "doImages" => 10, - "doAnchors" => 20, - - # Make links out of things like `` - # Must come after doAnchors, because you can use < and > - # delimiters in inline links like [this](). - "doAutoLinks" => 30, - "encodeAmpsAndAngles" => 40, - - "doItalicsAndBold" => 50, - "doHardBreaks" => 60, - ); - - function runSpanGamut($text) { - # - # Run span gamut tranformations. - # - foreach ($this->span_gamut as $method => $priority) { - $text = $this->$method($text); - } - - return $text; - } - - - function doHardBreaks($text) { - # Do hard breaks: - return preg_replace_callback('/ {2,}\n/', - array(&$this, '_doHardBreaks_callback'), $text); - } - function _doHardBreaks_callback($matches) { - return $this->hashPart("empty_element_suffix\n"); - } - - - function doAnchors($text) { - # - # Turn Markdown link shortcuts into XHTML tags. - # - if ($this->in_anchor) return $text; - $this->in_anchor = true; - - # - # First, handle reference-style links: [link text] [id] - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - \[ - ('.$this->nested_brackets_re.') # link text = $2 - \] - - [ ]? # one optional space - (?:\n[ ]*)? # one optional newline followed by spaces - - \[ - (.*?) # id = $3 - \] - ) - }xs', - array(&$this, '_doAnchors_reference_callback'), $text); - - # - # Next, inline-style links: [link text](url "optional title") - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - \[ - ('.$this->nested_brackets_re.') # link text = $2 - \] - \( # literal paren - [ ]* - (?: - <(\S*)> # href = $3 - | - ('.$this->nested_url_parenthesis_re.') # href = $4 - ) - [ ]* - ( # $5 - ([\'"]) # quote char = $6 - (.*?) # Title = $7 - \6 # matching quote - [ ]* # ignore any spaces/tabs between closing quote and ) - )? # title is optional - \) - ) - }xs', - array(&$this, '_DoAnchors_inline_callback'), $text); - - # - # Last, handle reference-style shortcuts: [link text] - # These must come last in case you've also got [link test][1] - # or [link test](/foo) - # -// $text = preg_replace_callback('{ -// ( # wrap whole match in $1 -// \[ -// ([^\[\]]+) # link text = $2; can\'t contain [ or ] -// \] -// ) -// }xs', -// array(&$this, '_doAnchors_reference_callback'), $text); - - $this->in_anchor = false; - return $text; - } - function _doAnchors_reference_callback($matches) { - $whole_match = $matches[1]; - $link_text = $matches[2]; - $link_id =& $matches[3]; - - if ($link_id == "") { - # for shortcut links like [this][] or [this]. - $link_id = $link_text; - } - - # lower-case and turn embedded newlines into spaces - $link_id = strtolower($link_id); - $link_id = preg_replace('{[ ]?\n}', ' ', $link_id); - - if (isset($this->urls[$link_id])) { - $url = $this->urls[$link_id]; - $url = $this->encodeAttribute($url); - - $result = "titles[$link_id] ) ) { - $title = $this->titles[$link_id]; - $title = $this->encodeAttribute($title); - $result .= " title=\"$title\""; - } - - $link_text = $this->runSpanGamut($link_text); - $result .= ">$link_text"; - $result = $this->hashPart($result); - } - else { - $result = $whole_match; - } - return $result; - } - function _doAnchors_inline_callback($matches) { - $whole_match = $matches[1]; - $link_text = $this->runSpanGamut($matches[2]); - $url = $matches[3] == '' ? $matches[4] : $matches[3]; - $title =& $matches[7]; - - $url = $this->encodeAttribute($url); - - $result = "encodeAttribute($title); - $result .= " title=\"$title\""; - } - - $link_text = $this->runSpanGamut($link_text); - $result .= ">$link_text"; - - return $this->hashPart($result); - } - - - function doImages($text) { - # - # Turn Markdown image shortcuts into tags. - # - # - # First, handle reference-style labeled images: ![alt text][id] - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - !\[ - ('.$this->nested_brackets_re.') # alt text = $2 - \] - - [ ]? # one optional space - (?:\n[ ]*)? # one optional newline followed by spaces - - \[ - (.*?) # id = $3 - \] - - ) - }xs', - array(&$this, '_doImages_reference_callback'), $text); - - # - # Next, handle inline images: ![alt text](url "optional title") - # Don't forget: encode * and _ - # - $text = preg_replace_callback('{ - ( # wrap whole match in $1 - !\[ - ('.$this->nested_brackets_re.') # alt text = $2 - \] - \s? # One optional whitespace character - \( # literal paren - [ ]* - (?: - <(\S*)> # src url = $3 - | - ('.$this->nested_url_parenthesis_re.') # src url = $4 - ) - [ ]* - ( # $5 - ([\'"]) # quote char = $6 - (.*?) # title = $7 - \6 # matching quote - [ ]* - )? # title is optional - \) - ) - }xs', - array(&$this, '_doImages_inline_callback'), $text); - - return $text; - } - function _doImages_reference_callback($matches) { - $whole_match = $matches[1]; - $alt_text = $matches[2]; - $link_id = strtolower($matches[3]); - - if ($link_id == "") { - $link_id = strtolower($alt_text); # for shortcut links like ![this][]. - } - - $alt_text = $this->encodeAttribute($alt_text); - if (isset($this->urls[$link_id])) { - $url = $this->encodeAttribute($this->urls[$link_id]); - $result = "\"$alt_text\"";titles[$link_id])) { - $title = $this->titles[$link_id]; - $title = $this->encodeAttribute($title); - $result .= " title=\"$title\""; - } - $result .= $this->empty_element_suffix; - $result = $this->hashPart($result); - } - else { - # If there's no such link ID, leave intact: - $result = $whole_match; - } - - return $result; - } - function _doImages_inline_callback($matches) { - $whole_match = $matches[1]; - $alt_text = $matches[2]; - $url = $matches[3] == '' ? $matches[4] : $matches[3]; - $title =& $matches[7]; - - $alt_text = $this->encodeAttribute($alt_text); - $url = $this->encodeAttribute($url); - $result = "\"$alt_text\"";encodeAttribute($title); - $result .= " title=\"$title\""; # $title already quoted - } - $result .= $this->empty_element_suffix; - - return $this->hashPart($result); - } - - - function doHeaders($text) { - # Setext-style headers: - # Header 1 - # ======== - # - # Header 2 - # -------- - # - $text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx', - array(&$this, '_doHeaders_callback_setext'), $text); - - # atx-style headers: - # # Header 1 - # ## Header 2 - # ## Header 2 with closing hashes ## - # ... - # ###### Header 6 - # - $text = preg_replace_callback('{ - ^(\#{1,6}) # $1 = string of #\'s - [ ]* - (.+?) # $2 = Header text - [ ]* - \#* # optional closing #\'s (not counted) - \n+ - }xm', - array(&$this, '_doHeaders_callback_atx'), $text); - - return $text; - } - function _doHeaders_callback_setext($matches) { - # Terrible hack to check we haven't found an empty list item. - if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1])) - return $matches[0]; - - $level = $matches[2]{0} == '=' ? 1 : 2; - $block = "".$this->runSpanGamut($matches[1]).""; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - function _doHeaders_callback_atx($matches) { - $level = strlen($matches[1]); - $block = "".$this->runSpanGamut($matches[2]).""; - return "\n" . $this->hashBlock($block) . "\n\n"; - } - - - function doLists($text) { - # - # Form HTML ordered (numbered) and unordered (bulleted) lists. - # - $less_than_tab = $this->tab_width - 1; - - # Re-usable patterns to match list item bullets and number markers: - $marker_ul_re = '[*+-]'; - $marker_ol_re = '\d+[.]'; - $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)"; - - $markers_relist = array($marker_ul_re, $marker_ol_re); - - foreach ($markers_relist as $marker_re) { - # Re-usable pattern to match any entirel ul or ol list: - $whole_list_re = ' - ( # $1 = whole list - ( # $2 - [ ]{0,'.$less_than_tab.'} - ('.$marker_re.') # $3 = first list item marker - [ ]+ - ) - (?s:.+?) - ( # $4 - \z - | - \n{2,} - (?=\S) - (?! # Negative lookahead for another list item marker - [ ]* - '.$marker_re.'[ ]+ - ) - ) - ) - '; // mx - - # We use a different prefix before nested lists than top-level lists. - # See extended comment in _ProcessListItems(). - - if ($this->list_level) { - $text = preg_replace_callback('{ - ^ - '.$whole_list_re.' - }mx', - array(&$this, '_doLists_callback'), $text); - } - else { - $text = preg_replace_callback('{ - (?:(?<=\n)\n|\A\n?) # Must eat the newline - '.$whole_list_re.' - }mx', - array(&$this, '_doLists_callback'), $text); - } - } - - return $text; - } - function _doLists_callback($matches) { - # Re-usable patterns to match list item bullets and number markers: - $marker_ul_re = '[*+-]'; - $marker_ol_re = '\d+[.]'; - $marker_any_re = "(?:$marker_ul_re|$marker_ol_re)"; - - $list = $matches[1]; - $list_type = preg_match("/$marker_ul_re/", $matches[3]) ? "ul" : "ol"; - - $marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re ); - - $list .= "\n"; - $result = $this->processListItems($list, $marker_any_re); - - $result = $this->hashBlock("<$list_type>\n" . $result . ""); - return "\n". $result ."\n\n"; - } - - var $list_level = 0; - - function processListItems($list_str, $marker_any_re) { - # - # Process the contents of a single ordered or unordered list, splitting it - # into individual list items. - # - # The $this->list_level global keeps track of when we're inside a list. - # Each time we enter a list, we increment it; when we leave a list, - # we decrement. If it's zero, we're not in a list anymore. - # - # We do this because when we're not inside a list, we want to treat - # something like this: - # - # I recommend upgrading to version - # 8. Oops, now this line is treated - # as a sub-list. - # - # As a single paragraph, despite the fact that the second line starts - # with a digit-period-space sequence. - # - # Whereas when we're inside a list (or sub-list), that line will be - # treated as the start of a sub-list. What a kludge, huh? This is - # an aspect of Markdown's syntax that's hard to parse perfectly - # without resorting to mind-reading. Perhaps the solution is to - # change the syntax rules such that sub-lists must start with a - # starting cardinal number; e.g. "1." or "a.". - - $this->list_level++; - - # trim trailing blank lines: - $list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str); - - $list_str = preg_replace_callback('{ - (\n)? # leading line = $1 - (^[ ]*) # leading whitespace = $2 - ('.$marker_any_re.' # list marker and space = $3 - (?:[ ]+|(?=\n)) # space only required if item is not empty - ) - ((?s:.*?)) # list item text = $4 - (?:(\n+(?=\n))|\n) # tailing blank line = $5 - (?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n)))) - }xm', - array(&$this, '_processListItems_callback'), $list_str); - - $this->list_level--; - return $list_str; - } - function _processListItems_callback($matches) { - $item = $matches[4]; - $leading_line =& $matches[1]; - $leading_space =& $matches[2]; - $marker_space = $matches[3]; - $tailing_blank_line =& $matches[5]; - - if ($leading_line || $tailing_blank_line || - preg_match('/\n{2,}/', $item)) - { - # Replace marker with the appropriate whitespace indentation - $item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item; - $item = $this->runBlockGamut($this->outdent($item)."\n"); - } - else { - # Recursion for sub-lists: - $item = $this->doLists($this->outdent($item)); - $item = preg_replace('/\n+$/', '', $item); - $item = $this->runSpanGamut($item); - } - - return "
  • " . $item . "
    • \n"; - } - - - function doCodeBlocks($text) { - # - # Process Markdown `
    ` blocks.
-	#
-		$text = preg_replace_callback('{
-				(?:\n\n|\A\n?)
-				(	            # $1 = the code block -- one or more lines, starting with a space/tab
-				  (?>
-					[ ]{'.$this->tab_width.'}  # Lines must start with a tab or a tab-width of spaces
-					.*\n+
-				  )+
-				)
-				((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z)	# Lookahead for non-space at line-start, or end of doc
-			}xm',
-			array(&$this, '_doCodeBlocks_callback'), $text);
-
-		return $text;
-	}
-	function _doCodeBlocks_callback($matches) {
-		$codeblock = $matches[1];
-
-		$codeblock = $this->outdent($codeblock);
-		$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
-
-		# trim leading newlines and trailing newlines
-		$codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock);
-
-		$codeblock = "
    $codeblock\n
    ";
-		return "\n\n".$this->hashBlock($codeblock)."\n\n";
-	}
-
-
-	function makeCodeSpan($code) {
-	#
-	# Create a code span markup for $code. Called from handleSpanToken.
-	#
-		$code = htmlspecialchars(trim($code), ENT_NOQUOTES);
-		return $this->hashPart("$code");
-	}
-
-
-	var $em_relist = array(
-		''  => '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(?em_relist as $em => $em_re) {
-			foreach ($this->strong_relist as $strong => $strong_re) {
-				# Construct list of allowed token expressions.
-				$token_relist = array();
-				if (isset($this->em_strong_relist["$em$strong"])) {
-					$token_relist[] = $this->em_strong_relist["$em$strong"];
-				}
-				$token_relist[] = $em_re;
-				$token_relist[] = $strong_re;
-				
-				# Construct master expression from list.
-				$token_re = '{('. implode('|', $token_relist) .')}';
-				$this->em_strong_prepared_relist["$em$strong"] = $token_re;
-			}
-		}
-	}
-	
-	function doItalicsAndBold($text) {
-		$token_stack = array('');
-		$text_stack = array('');
-		$em = '';
-		$strong = '';
-		$tree_char_em = false;
-		
-		while (1) {
-			#
-			# Get prepared regular expression for seraching emphasis tokens
-			# in current context.
-			#
-			$token_re = $this->em_strong_prepared_relist["$em$strong"];
-			
-			#
-			# Each loop iteration seach for the next emphasis token. 
-			# Each token is then passed to handleSpanToken.
-			#
-			$parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
-			$text_stack[0] .= $parts[0];
-			$token =& $parts[1];
-			$text =& $parts[2];
-			
-			if (empty($token)) {
-				# Reached end of text span: empty stack without emitting.
-				# any more emphasis.
-				while ($token_stack[0]) {
-					$text_stack[1] .= array_shift($token_stack);
-					$text_stack[0] .= array_shift($text_stack);
-				}
-				break;
-			}
-			
-			$token_len = strlen($token);
-			if ($tree_char_em) {
-				# Reached closing marker while inside a three-char emphasis.
-				if ($token_len == 3) {
-					# Three-char closing marker, close em and strong.
-					array_shift($token_stack);
-					$span = array_shift($text_stack);
-					$span = $this->runSpanGamut($span);
-					$span = "$span";
-					$text_stack[0] .= $this->hashPart($span);
-					$em = '';
-					$strong = '';
-				} else {
-					# Other closing marker: close one em or strong and
-					# change current token state to match the other
-					$token_stack[0] = str_repeat($token{0}, 3-$token_len);
-					$tag = $token_len == 2 ? "strong" : "em";
-					$span = $text_stack[0];
-					$span = $this->runSpanGamut($span);
-					$span = "<$tag>$span";
-					$text_stack[0] = $this->hashPart($span);
-					$$tag = ''; # $$tag stands for $em or $strong
-				}
-				$tree_char_em = false;
-			} else if ($token_len == 3) {
-				if ($em) {
-					# Reached closing marker for both em and strong.
-					# Closing strong marker:
-					for ($i = 0; $i < 2; ++$i) {
-						$shifted_token = array_shift($token_stack);
-						$tag = strlen($shifted_token) == 2 ? "strong" : "em";
-						$span = array_shift($text_stack);
-						$span = $this->runSpanGamut($span);
-						$span = "<$tag>$span";
-						$text_stack[0] .= $this->hashPart($span);
-						$$tag = ''; # $$tag stands for $em or $strong
-					}
-				} else {
-					# Reached opening three-char emphasis marker. Push on token 
-					# stack; will be handled by the special condition above.
-					$em = $token{0};
-					$strong = "$em$em";
-					array_unshift($token_stack, $token);
-					array_unshift($text_stack, '');
-					$tree_char_em = true;
-				}
-			} else if ($token_len == 2) {
-				if ($strong) {
-					# Unwind any dangling emphasis marker:
-					if (strlen($token_stack[0]) == 1) {
-						$text_stack[1] .= array_shift($token_stack);
-						$text_stack[0] .= array_shift($text_stack);
-					}
-					# Closing strong marker:
-					array_shift($token_stack);
-					$span = array_shift($text_stack);
-					$span = $this->runSpanGamut($span);
-					$span = "$span";
-					$text_stack[0] .= $this->hashPart($span);
-					$strong = '';
-				} else {
-					array_unshift($token_stack, $token);
-					array_unshift($text_stack, '');
-					$strong = $token;
-				}
-			} else {
-				# Here $token_len == 1
-				if ($em) {
-					if (strlen($token_stack[0]) == 1) {
-						# Closing emphasis marker:
-						array_shift($token_stack);
-						$span = array_shift($text_stack);
-						$span = $this->runSpanGamut($span);
-						$span = "$span";
-						$text_stack[0] .= $this->hashPart($span);
-						$em = '';
-					} else {
-						$text_stack[0] .= $token;
-					}
-				} else {
-					array_unshift($token_stack, $token);
-					array_unshift($text_stack, '');
-					$em = $token;
-				}
-			}
-		}
-		return $text_stack[0];
-	}
-
-
-	function doBlockQuotes($text) {
-		$text = preg_replace_callback('/
-			  (								# Wrap whole match in $1
-				(?>
-				  ^[ ]*>[ ]?			# ">" at the start of a line
-					.+\n					# rest of the first line
-				  (.+\n)*					# subsequent consecutive lines
-				  \n*						# blanks
-				)+
-			  )
-			/xm',
-			array(&$this, '_doBlockQuotes_callback'), $text);
-
-		return $text;
-	}
-	function _doBlockQuotes_callback($matches) {
-		$bq = $matches[1];
-		# trim one level of quoting - trim whitespace-only lines
-		$bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq);
-		$bq = $this->runBlockGamut($bq);		# recurse
-
-		$bq = preg_replace('/^/m', "  ", $bq);
-		# These leading spaces cause problem with 
     content, 
-		# so we need to fix that:
-		$bq = preg_replace_callback('{(\s*
    .+?
    )}sx', 
-			array(&$this, '_DoBlockQuotes_callback2'), $bq);
-
-		return "\n". $this->hashBlock("
    \n$bq\n
    ")."\n\n";
-	}
-	function _doBlockQuotes_callback2($matches) {
-		$pre = $matches[1];
-		$pre = preg_replace('/^  /m', '', $pre);
-		return $pre;
-	}
-
-
-	function formParagraphs($text) {
-	#
-	#	Params:
-	#		$text - string to process with html 
     tags
-	#
-		# Strip leading and trailing lines:
-		$text = preg_replace('/\A\n+|\n+\z/', '', $text);
-
-		$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
-
-		#
-		# Wrap 
     tags and unhashify HTML blocks
-		#
-		foreach ($grafs as $key => $value) {
-			if (!preg_match('/^B\x1A[0-9]+B$/', $value)) {
-				# Is a paragraph.
-				$value = $this->runSpanGamut($value);
-				$value = preg_replace('/^([ ]*)/', "
    ", $value);
-				$value .= "
    ";
-				$grafs[$key] = $this->unhash($value);
-			}
-			else {
-				# Is a block.
-				# Modify elements of @grafs in-place...
-				$graf = $value;
-				$block = $this->html_hashes[$graf];
-				$graf = $block;
-//				if (preg_match('{
-//					\A
-//					(							# $1 = 
     tag
-//					  
    ]*
-//					  \b
-//					  markdown\s*=\s*  ([\'"])	#	$2 = attr quote char
-//					  1
-//					  \2
-//					  [^>]*
-//					  >
-//					)
-//					(							# $3 = contents
-//					.*
-//					)
-//					(
    )					# $4 = closing tag
-//					\z
-//					}xs', $block, $matches))
-//				{
-//					list(, $div_open, , $div_content, $div_close) = $matches;
-//
-//					# We can't call Markdown(), because that resets the hash;
-//					# that initialization code should be pulled into its own sub, though.
-//					$div_content = $this->hashHTMLBlocks($div_content);
-//					
-//					# Run document gamut methods on the content.
-//					foreach ($this->document_gamut as $method => $priority) {
-//						$div_content = $this->$method($div_content);
-//					}
-//
-//					$div_open = preg_replace(
-//						'{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open);
-//
-//					$graf = $div_open . "\n" . $div_content . "\n" . $div_close;
-//				}
-				$grafs[$key] = $graf;
-			}
-		}
-
-		return implode("\n\n", $grafs);
-	}
-
-
-	function encodeAttribute($text) {
-	#
-	# Encode text for a double-quoted HTML attribute. This function
-	# is *not* suitable for attributes enclosed in single quotes.
-	#
-		$text = $this->encodeAmpsAndAngles($text);
-		$text = str_replace('"', '"', $text);
-		return $text;
-	}
-	
-	
-	function encodeAmpsAndAngles($text) {
-	#
-	# Smart processing for ampersands and angle brackets that need to 
-	# be encoded. Valid character entities are left alone unless the
-	# no-entities mode is set.
-	#
-		if ($this->no_entities) {
-			$text = str_replace('&', '&', $text);
-		} else {
-			# Ampersand-encoding based entirely on Nat Irons's Amputator
-			# MT plugin: 
-			$text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/', 
-								'&', $text);;
-		}
-		# Encode remaining <'s
-		$text = str_replace('<', '<', $text);
-
-		return $text;
-	}
-
-
-	function doAutoLinks($text) {
-		$text = preg_replace_callback('{<((https?|ftp|dict):[^\'">\s]+)>}i', 
-			array(&$this, '_doAutoLinks_url_callback'), $text);
-
-		# Email addresses: 
-		$text = preg_replace_callback('{
-			<
-			(?:mailto:)?
-			(
-				[-.\w\x80-\xFF]+
-				\@
-				[-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+
-			)
-			>
-			}xi',
-			array(&$this, '_doAutoLinks_email_callback'), $text);
-
-		return $text;
-	}
-	function _doAutoLinks_url_callback($matches) {
-		$url = $this->encodeAttribute($matches[1]);
-		$link = "$url";
-		return $this->hashPart($link);
-	}
-	function _doAutoLinks_email_callback($matches) {
-		$address = $matches[1];
-		$link = $this->encodeEmailAddress($address);
-		return $this->hashPart($link);
-	}
-
-
-	function encodeEmailAddress($addr) {
-	#
-	#	Input: an email address, e.g. "foo@example.com"
-	#
-	#	Output: the email address as a mailto link, with each character
-	#		of the address encoded as either a decimal or hex entity, in
-	#		the hopes of foiling most address harvesting spam bots. E.g.:
-	#
-	#	  
    foo@exampl
-	#        e.com
    
-	#
-	#	Based by a filter by Matthew Wickline, posted to BBEdit-Talk.
-	#   With some optimizations by Milian Wolff.
-	#
-		$addr = "mailto:" . $addr;
-		$chars = preg_split('/(? $char) {
-			$ord = ord($char);
-			# Ignore non-ascii chars.
-			if ($ord < 128) {
-				$r = ($seed * (1 + $key)) % 100; # Pseudo-random function.
-				# roughly 10% raw, 45% hex, 45% dec
-				# '@' *must* be encoded. I insist.
-				if ($r > 90 && $char != '@') /* do nothing */;
-				else if ($r < 45) $chars[$key] = '&#x'.dechex($ord).';';
-				else              $chars[$key] = '&#'.$ord.';';
-			}
-		}
-		
-		$addr = implode('', $chars);
-		$text = implode('', array_slice($chars, 7)); # text without `mailto:`
-		$addr = "$text";
-
-		return $addr;
-	}
-
-
-	function parseSpan($str) {
-	#
-	# Take the string $str and parse it into tokens, hashing embeded HTML,
-	# escaped characters and handling code spans.
-	#
-		$output = '';
-		
-		$span_re = '{
-				(
-					\\\\'.$this->escape_chars_re.'
-				|
-					(?no_markup ? '' : '
-				|
-							# comment
-				|
-					<\?.*?\?> | <%.*?%>		# processing instruction
-				|
-					<[/!$]?[-a-zA-Z0-9:]+	# regular tags
-					(?>
-						\s
-						(?>[^"\'>]+|"[^"]*"|\'[^\']*\')*
-					)?
-					>
-			').'
-				)
-				}xs';
-
-		while (1) {
-			#
-			# Each loop iteration seach for either the next tag, the next 
-			# openning code span marker, or the next escaped character. 
-			# Each token is then passed to handleSpanToken.
-			#
-			$parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE);
-			
-			# Create token from text preceding tag.
-			if ($parts[0] != "") {
-				$output .= $parts[0];
-			}
-			
-			# Check if we reach the end.
-			if (isset($parts[1])) {
-				$output .= $this->handleSpanToken($parts[1], $parts[2]);
-				$str = $parts[2];
-			}
-			else {
-				break;
-			}
-		}
-		
-		return $output;
-	}
-	
-	
-	function handleSpanToken($token, &$str) {
-	#
-	# Handle $token provided by parseSpan by determining its nature and 
-	# returning the corresponding value that should replace it.
-	#
-		switch ($token{0}) {
-			case "\\":
-				return $this->hashPart("&#". ord($token{1}). ";");
-			case "`":
-				# Search for end marker in remaining text.
-				if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm', 
-					$str, $matches))
-				{
-					$str = $matches[2];
-					$codespan = $this->makeCodeSpan($matches[1]);
-					return $this->hashPart($codespan);
-				}
-				return $token; // return as text since no ending marker found.
-			default:
-				return $this->hashPart($token);
-		}
-	}
-
-
-	function outdent($text) {
-	#
-	# Remove one level of line-leading tabs or spaces
-	#
-		return preg_replace('/^(\t|[ ]{1,'.$this->tab_width.'})/m', '', $text);
-	}
-
-
-	# String length function for detab. `_initDetab` will create a function to 
-	# hanlde UTF-8 if the default function does not exist.
-	var $utf8_strlen = 'mb_strlen';
-	
-	function detab($text) {
-	#
-	# Replace tabs with the appropriate amount of space.
-	#
-		# For each line we separate the line in blocks delemited by
-		# tab characters. Then we reconstruct every line by adding the 
-		# appropriate number of space between each blocks.
-		
-		$text = preg_replace_callback('/^.*\t.*$/m',
-			array(&$this, '_detab_callback'), $text);
-
-		return $text;
-	}
-	function _detab_callback($matches) {
-		$line = $matches[0];
-		$strlen = $this->utf8_strlen; # strlen function for UTF-8.
-		
-		# Split in blocks.
-		$blocks = explode("\t", $line);
-		# Add each blocks to the line.
-		$line = $blocks[0];
-		unset($blocks[0]); # Do not add first block twice.
-		foreach ($blocks as $block) {
-			# Calculate amount of space, insert spaces, insert block.
-			$amount = $this->tab_width - 
-				$strlen($line, 'UTF-8') % $this->tab_width;
-			$line .= str_repeat(" ", $amount) . $block;
-		}
-		return $line;
-	}
-	function _initDetab() {
-	#
-	# Check for the availability of the function in the `utf8_strlen` property
-	# (initially `mb_strlen`). If the function is not available, create a 
-	# function that will loosely count the number of UTF-8 characters with a
-	# regular expression.
-	#
-		if (function_exists($this->utf8_strlen)) return;
-		$this->utf8_strlen = create_function('$text', 'return preg_match_all(
-			"/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/", 
-			$text, $m);');
-	}
-
-
-	function unhash($text) {
-	#
-	# Swap back in all the tags hashed by _HashHTMLBlocks.
-	#
-		return preg_replace_callback('/(.)\x1A[0-9]+\1/', 
-			array(&$this, '_unhash_callback'), $text);
-	}
-	function _unhash_callback($matches) {
-		return $this->html_hashes[$matches[0]];
-	}
-
-}
-
-
-#
-# Markdown Extra Parser Class
-#
-
-class MarkdownExtra_Parser extends Markdown_Parser {
-
-	# Prefix for footnote ids.
-	var $fn_id_prefix = "";
-	
-	# Optional title attribute for footnote links and backlinks.
-	var $fn_link_title = MARKDOWN_FN_LINK_TITLE;
-	var $fn_backlink_title = MARKDOWN_FN_BACKLINK_TITLE;
-	
-	# Optional class attribute for footnote links and backlinks.
-	var $fn_link_class = MARKDOWN_FN_LINK_CLASS;
-	var $fn_backlink_class = MARKDOWN_FN_BACKLINK_CLASS;
-	
-	# Predefined abbreviations.
-	var $predef_abbr = array();
-
-
-	function MarkdownExtra_Parser() {
-	#
-	# Constructor function. Initialize the parser object.
-	#
-		# Add extra escapable characters before parent constructor 
-		# initialize the table.
-		$this->escape_chars .= ':|';
-		
-		# Insert extra document, block, and span transformations. 
-		# Parent constructor will do the sorting.
-		$this->document_gamut += array(
-			"doFencedCodeBlocks" => 5,
-			"stripFootnotes"     => 15,
-			"stripAbbreviations" => 25,
-			"appendFootnotes"    => 50,
-			);
-		$this->block_gamut += array(
-			"doFencedCodeBlocks" => 5,
-			"doTables"           => 15,
-			"doDefLists"         => 45,
-			);
-		$this->span_gamut += array(
-			"doFootnotes"        => 5,
-			"doAbbreviations"    => 70,
-			);
-		
-		parent::Markdown_Parser();
-	}
-	
-	
-	# Extra variables used during extra transformations.
-	var $footnotes = array();
-	var $footnotes_ordered = array();
-	var $abbr_desciptions = array();
-	var $abbr_word_re = '';
-	
-	# Give the current footnote number.
-	var $footnote_counter = 1;
-	
-	
-	function setup() {
-	#
-	# Setting up Extra-specific variables.
-	#
-		parent::setup();
-		
-		$this->footnotes = array();
-		$this->footnotes_ordered = array();
-		$this->abbr_desciptions = array();
-		$this->abbr_word_re = '';
-		$this->footnote_counter = 1;
-		
-		foreach ($this->predef_abbr as $abbr_word => $abbr_desc) {
-			if ($this->abbr_word_re)
-				$this->abbr_word_re .= '|';
-			$this->abbr_word_re .= preg_quote($abbr_word);
-			$this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
-		}
-	}
-	
-	function teardown() {
-	#
-	# Clearing Extra-specific variables.
-	#
-		$this->footnotes = array();
-		$this->footnotes_ordered = array();
-		$this->abbr_desciptions = array();
-		$this->abbr_word_re = '';
-		
-		parent::teardown();
-	}
-	
-	
-	### HTML Block Parser ###
-	
-	# Tags that are always treated as block tags:
-	var $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend';
-	
-	# Tags treated as block tags only if the opening tag is alone on it's line:
-	var $context_block_tags_re = 'script|noscript|math|ins|del';
-	
-	# Tags where markdown="1" default to span mode:
-	var $contain_span_tags_re = 'p|h[1-6]|li|dd|dt|td|th|legend|address';
-	
-	# Tags which must not have their contents modified, no matter where 
-	# they appear:
-	var $clean_tags_re = 'script|math';
-	
-	# Tags that do not need to be closed.
-	var $auto_close_tags_re = 'hr|img';
-	
-
-	function hashHTMLBlocks($text) {
-	#
-	# Hashify HTML Blocks and "clean tags".
-	#
-	# We only want to do this for block-level HTML tags, such as headers,
-	# lists, and tables. That's because we still want to wrap 
    s around
-	# "paragraphs" that are wrapped in non-block-level tags, such as anchors,
-	# phrase emphasis, and spans. The list of tags we're looking for is
-	# hard-coded.
-	#
-	# This works by calling _HashHTMLBlocks_InMarkdown, which then calls
-	# _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1" 
-	# attribute is found whitin a tag, _HashHTMLBlocks_InHTML calls back
-	#  _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag.
-	# These two functions are calling each other. It's recursive!
-	#
-		#
-		# Call the HTML-in-Markdown hasher.
-		#
-		list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text);
-		
-		return $text;
-	}
-	function _hashHTMLBlocks_inMarkdown($text, $indent = 0, 
-										$enclosing_tag_re = '', $span = false)
-	{
-	#
-	# Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags.
-	#
-	# *   $indent is the number of space to be ignored when checking for code 
-	#     blocks. This is important because if we don't take the indent into 
-	#     account, something like this (which looks right) won't work as expected:
-	#
-	#     
    
-	#         
    
-	#         Hello World.  <-- Is this a Markdown code block or text?
-	#         
      <-- Is this a Markdown code block or a real tag?
-	#     
    
-	#
-	#     If you don't like this, just don't indent the tag on which
-	#     you apply the markdown="1" attribute.
-	#
-	# *   If $enclosing_tag_re is not empty, stops at the first unmatched closing 
-	#     tag with that name. Nested tags supported.
-	#
-	# *   If $span is true, text inside must treated as span. So any double 
-	#     newline will be replaced by a single newline so that it does not create 
-	#     paragraphs.
-	#
-	# Returns an array of that form: ( processed text , remaining text )
-	#
-		if ($text === '') return array('', '');
-
-		# Regex to check for the presense of newlines around a block tag.
-		$newline_before_re = '/(?:^\n?|\n\n)*$/';
-		$newline_after_re = 
-			'{
-				^						# Start of text following the tag.
-				(?>[ ]*)?		# Optional comment.
-				[ ]*\n					# Must be followed by newline.
-			}xs';
-		
-		# Regex to match any tag.
-		$block_tag_re =
-			'{
-				(					# $2: Capture hole tag.
-									# Tag name.
-							'.$this->block_tags_re.'			|
-							'.$this->context_block_tags_re.'	|
-							'.$this->clean_tags_re.'        	|
-							(?!\s)'.$enclosing_tag_re.'
-						)
-						(?:
-							(?=[\s"\'/a-zA-Z0-9])	# Allowed characters after tag name.
-							(?>
-								".*?"		|	# Double quotes (can contain `>`)
-								\'.*?\'   	|	# Single quotes (can contain `>`)
-								.+?				# Anything but quotes and `>`.
-							)*?
-						)?
-					>					# End of tag.
-				|
-						# HTML Comment
-				|
-					<\?.*?\?> | <%.*?%>	# Processing instruction
-				|
-						# CData Block
-				|
-					# Code span marker
-					`+
-				'. ( !$span ? ' # If not in span.
-				|
-					# Indented code block
-					(?> ^[ ]*\n? | \n[ ]*\n )
-					[ ]{'.($indent+4).'}[^\n]* \n
-					(?>
-						(?: [ ]{'.($indent+4).'}[^\n]* | [ ]* ) \n
-					)*
-				|
-					# Fenced code block marker
-					(?> ^ | \n )
-					[ ]{'.($indent).'}~~~+[ ]*\n
-				' : '' ). ' # End (if not is span).
-				)
-			}xs';
-
-		
-		$depth = 0;		# Current depth inside the tag tree.
-		$parsed = "";	# Parsed text that will be returned.
-
-		#
-		# Loop through every tag until we find the closing tag of the parent
-		# or loop until reaching the end of text if no parent tag specified.
-		#
-		do {
-			#
-			# Split the text using the first $tag_match pattern found.
-			# Text before  pattern will be first in the array, text after
-			# pattern will be at the end, and between will be any catches made 
-			# by the pattern.
-			#
-			$parts = preg_split($block_tag_re, $text, 2, 
-								PREG_SPLIT_DELIM_CAPTURE);
-			
-			# If in Markdown span mode, add a empty-string span-level hash 
-			# after each newline to prevent triggering any block element.
-			if ($span) {
-				$void = $this->hashPart("", ':');
-				$newline = "$void\n";
-				$parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void;
-			}
-			
-			$parsed .= $parts[0]; # Text before current tag.
-			
-			# If end of $text has been reached. Stop loop.
-			if (count($parts) < 3) {
-				$text = "";
-				break;
-			}
-			
-			$tag  = $parts[1]; # Tag to handle.
-			$text = $parts[2]; # Remaining text after current tag.
-			$tag_re = preg_quote($tag); # For use in a regular expression.
-			
-			#
-			# Check for: Code span marker
-			#
-			if ($tag{0} == "`") {
-				# Find corresponding end marker.
-				$tag_re = preg_quote($tag);
-				if (preg_match('{^(?>.+?|\n(?!\n))*?(?.*\n)+?'.$tag_re.' *\n}', $text, 
-						$matches)) 
-					{
-						# End marker found: pass text unchanged until marker.
-						$parsed .= $tag . $matches[0];
-						$text = substr($text, strlen($matches[0]));
-					}
-					else {
-						# No end marker: just skip it.
-						$parsed .= $tag;
-					}
-				}
-			}
-			#
-			# Check for: Opening Block level tag or
-			#            Opening Context Block tag (like ins and del) 
-			#               used as a block tag (tag is alone on it's line).
-			#
-			else if (preg_match('{^<(?:'.$this->block_tags_re.')\b}', $tag) ||
-				(	preg_match('{^<(?:'.$this->context_block_tags_re.')\b}', $tag) &&
-					preg_match($newline_before_re, $parsed) &&
-					preg_match($newline_after_re, $text)	)
-				)
-			{
-				# Need to parse tag and following text using the HTML parser.
-				list($block_text, $text) = 
-					$this->_hashHTMLBlocks_inHTML($tag . $text, "hashBlock", true);
-				
-				# Make sure it stays outside of any paragraph by adding newlines.
-				$parsed .= "\n\n$block_text\n\n";
-			}
-			#
-			# Check for: Clean tag (like script, math)
-			#            HTML Comments, processing instructions.
-			#
-			else if (preg_match('{^<(?:'.$this->clean_tags_re.')\b}', $tag) ||
-				$tag{1} == '!' || $tag{1} == '?')
-			{
-				# Need to parse tag and following text using the HTML parser.
-				# (don't check for markdown attribute)
-				list($block_text, $text) = 
-					$this->_hashHTMLBlocks_inHTML($tag . $text, "hashClean", false);
-				
-				$parsed .= $block_text;
-			}
-			#
-			# Check for: Tag with same name as enclosing tag.
-			#
-			else if ($enclosing_tag_re !== '' &&
-				# Same name as enclosing tag.
-				preg_match('{^= 0);
-		
-		return array($parsed, $text);
-	}
-	function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) {
-	#
-	# Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags.
-	#
-	# *   Calls $hash_method to convert any blocks.
-	# *   Stops when the first opening tag closes.
-	# *   $md_attr indicate if the use of the `markdown="1"` attribute is allowed.
-	#     (it is not inside clean tags)
-	#
-	# Returns an array of that form: ( processed text , remaining text )
-	#
-		if ($text === '') return array('', '');
-		
-		# Regex to match `markdown` attribute inside of a tag.
-		$markdown_attr_re = '
-			{
-				\s*			# Eat whitespace before the `markdown` attribute
-				markdown
-				\s*=\s*
-				(?>
-					(["\'])		# $1: quote delimiter		
-					(.*?)		# $2: attribute value
-					\1			# matching delimiter	
-				|
-					([^\s>]*)	# $3: unquoted attribute value
-				)
-				()				# $4: make $3 always defined (avoid warnings)
-			}xs';
-		
-		# Regex to match any tag.
-		$tag_re = '{
-				(					# $2: Capture hole tag.
-					
-								".*?"		|	# Double quotes (can contain `>`)
-								\'.*?\'   	|	# Single quotes (can contain `>`)
-								.+?				# Anything but quotes and `>`.
-							)*?
-						)?
-					>					# End of tag.
-				|
-						# HTML Comment
-				|
-					<\?.*?\?> | <%.*?%>	# Processing instruction
-				|
-						# CData Block
-				)
-			}xs';
-		
-		$original_text = $text;		# Save original text in case of faliure.
-		
-		$depth		= 0;	# Current depth inside the tag tree.
-		$block_text	= "";	# Temporary text holder for current text.
-		$parsed		= "";	# Parsed text that will be returned.
-
-		#
-		# Get the name of the starting tag.
-		# (This pattern makes $base_tag_name_re safe without quoting.)
-		#
-		if (preg_match('/^<([\w:$]*)\b/', $text, $matches))
-			$base_tag_name_re = $matches[1];
-
-		#
-		# Loop through every tag until we find the corresponding closing tag.
-		#
-		do {
-			#
-			# Split the text using the first $tag_match pattern found.
-			# Text before  pattern will be first in the array, text after
-			# pattern will be at the end, and between will be any catches made 
-			# by the pattern.
-			#
-			$parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
-			
-			if (count($parts) < 3) {
-				#
-				# End of $text reached with unbalenced tag(s).
-				# In that case, we return original text unchanged and pass the
-				# first character as filtered to prevent an infinite loop in the 
-				# parent function.
-				#
-				return array($original_text{0}, substr($original_text, 1));
-			}
-			
-			$block_text .= $parts[0]; # Text before current tag.
-			$tag         = $parts[1]; # Tag to handle.
-			$text        = $parts[2]; # Remaining text after current tag.
-			
-			#
-			# Check for: Auto-close tag (like 
    )
-			#			 Comments and Processing Instructions.
-			#
-			if (preg_match('{^auto_close_tags_re.')\b}', $tag) ||
-				$tag{1} == '!' || $tag{1} == '?')
-			{
-				# Just add the tag to the block as if it was text.
-				$block_text .= $tag;
-			}
-			else {
-				#
-				# Increase/decrease nested tag count. Only do so if
-				# the tag's name match base tag's.
-				#
-				if (preg_match('{^mode = $attr_m[2] . $attr_m[3];
-					$span_mode = $this->mode == 'span' || $this->mode != 'block' &&
-						preg_match('{^<(?:'.$this->contain_span_tags_re.')\b}', $tag);
-					
-					# Calculate indent before tag.
-					if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) {
-						$strlen = $this->utf8_strlen;
-						$indent = $strlen($matches[1], 'UTF-8');
-					} else {
-						$indent = 0;
-					}
-					
-					# End preceding block with this tag.
-					$block_text .= $tag;
-					$parsed .= $this->$hash_method($block_text);
-					
-					# Get enclosing tag name for the ParseMarkdown function.
-					# (This pattern makes $tag_name_re safe without quoting.)
-					preg_match('/^<([\w:$]*)\b/', $tag, $matches);
-					$tag_name_re = $matches[1];
-					
-					# Parse the content using the HTML-in-Markdown parser.
-					list ($block_text, $text)
-						= $this->_hashHTMLBlocks_inMarkdown($text, $indent, 
-							$tag_name_re, $span_mode);
-					
-					# Outdent markdown text.
-					if ($indent > 0) {
-						$block_text = preg_replace("/^[ ]{1,$indent}/m", "", 
-													$block_text);
-					}
-					
-					# Append tag content to parsed text.
-					if (!$span_mode)	$parsed .= "\n\n$block_text\n\n";
-					else				$parsed .= "$block_text";
-					
-					# Start over a new block.
-					$block_text = "";
-				}
-				else $block_text .= $tag;
-			}
-			
-		} while ($depth > 0);
-		
-		#
-		# Hash last block text that wasn't processed inside the loop.
-		#
-		$parsed .= $this->$hash_method($block_text);
-		
-		return array($parsed, $text);
-	}
-
-
-	function hashClean($text) {
-	#
-	# Called whenever a tag must be hashed when a function insert a "clean" tag
-	# in $text, it pass through this function and is automaticaly escaped, 
-	# blocking invalid nested overlap.
-	#
-		return $this->hashPart($text, 'C');
-	}
-
-
-	function doHeaders($text) {
-	#
-	# Redefined to add id attribute support.
-	#
-		# Setext-style headers:
-		#	  Header 1  {#header1}
-		#	  ========
-		#  
-		#	  Header 2  {#header2}
-		#	  --------
-		#
-		$text = preg_replace_callback(
-			'{
-				(^.+?)								# $1: Header text
-				(?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})?	# $2: Id attribute
-				[ ]*\n(=+|-+)[ ]*\n+				# $3: Header footer
-			}mx',
-			array(&$this, '_doHeaders_callback_setext'), $text);
-
-		# atx-style headers:
-		#	# Header 1        {#header1}
-		#	## Header 2       {#header2}
-		#	## Header 2 with closing hashes ##  {#header3}
-		#	...
-		#	###### Header 6   {#header2}
-		#
-		$text = preg_replace_callback('{
-				^(\#{1,6})	# $1 = string of #\'s
-				[ ]*
-				(.+?)		# $2 = Header text
-				[ ]*
-				\#*			# optional closing #\'s (not counted)
-				(?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})? # id attribute
-				[ ]*
-				\n+
-			}xm',
-			array(&$this, '_doHeaders_callback_atx'), $text);
-
-		return $text;
-	}
-	function _doHeaders_attr($attr) {
-		if (empty($attr))  return "";
-		return " id=\"$attr\"";
-	}
-	function _doHeaders_callback_setext($matches) {
-		if ($matches[3] == '-' && preg_match('{^- }', $matches[1]))
-			return $matches[0];
-		$level = $matches[3]{0} == '=' ? 1 : 2;
-		$attr  = $this->_doHeaders_attr($id =& $matches[2]);
-		$block = "".$this->runSpanGamut($matches[1])."";
-		return "\n" . $this->hashBlock($block) . "\n\n";
-	}
-	function _doHeaders_callback_atx($matches) {
-		$level = strlen($matches[1]);
-		$attr  = $this->_doHeaders_attr($id =& $matches[3]);
-		$block = "".$this->runSpanGamut($matches[2])."";
-		return "\n" . $this->hashBlock($block) . "\n\n";
-	}
-
-
-	function doTables($text) {
-	#
-	# Form HTML tables.
-	#
-		$less_than_tab = $this->tab_width - 1;
-		#
-		# Find tables with leading pipe.
-		#
-		#	| Header 1 | Header 2
-		#	| -------- | --------
-		#	| Cell 1   | Cell 2
-		#	| Cell 3   | Cell 4
-		#
-		$text = preg_replace_callback('
-			{
-				^							# Start of a line
-				[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
-				[|]							# Optional leading pipe (present)
-				(.+) \n						# $1: Header row (at least one pipe)
-				
-				[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
-				[|] ([ ]*[-:]+[-| :]*) \n	# $2: Header underline
-				
-				(							# $3: Cells
-					(?>
-						[ ]*				# Allowed whitespace.
-						[|] .* \n			# Row content.
-					)*
-				)
-				(?=\n|\Z)					# Stop at final double newline.
-			}xm',
-			array(&$this, '_doTable_leadingPipe_callback'), $text);
-		
-		#
-		# Find tables without leading pipe.
-		#
-		#	Header 1 | Header 2
-		#	-------- | --------
-		#	Cell 1   | Cell 2
-		#	Cell 3   | Cell 4
-		#
-		$text = preg_replace_callback('
-			{
-				^							# Start of a line
-				[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
-				(\S.*[|].*) \n				# $1: Header row (at least one pipe)
-				
-				[ ]{0,'.$less_than_tab.'}	# Allowed whitespace.
-				([-:]+[ ]*[|][-| :]*) \n	# $2: Header underline
-				
-				(							# $3: Cells
-					(?>
-						.* [|] .* \n		# Row content
-					)*
-				)
-				(?=\n|\Z)					# Stop at final double newline.
-			}xm',
-			array(&$this, '_DoTable_callback'), $text);
-
-		return $text;
-	}
-	function _doTable_leadingPipe_callback($matches) {
-		$head		= $matches[1];
-		$underline	= $matches[2];
-		$content	= $matches[3];
-		
-		# Remove leading pipe for each row.
-		$content	= preg_replace('/^ *[|]/m', '', $content);
-		
-		return $this->_doTable_callback(array($matches[0], $head, $underline, $content));
-	}
-	function _doTable_callback($matches) {
-		$head		= $matches[1];
-		$underline	= $matches[2];
-		$content	= $matches[3];
-
-		# Remove any tailing pipes for each line.
-		$head		= preg_replace('/[|] *$/m', '', $head);
-		$underline	= preg_replace('/[|] *$/m', '', $underline);
-		$content	= preg_replace('/[|] *$/m', '', $content);
-		
-		# Reading alignement from header underline.
-		$separators	= preg_split('/ *[|] */', $underline);
-		foreach ($separators as $n => $s) {
-			if (preg_match('/^ *-+: *$/', $s))		$attr[$n] = ' align="right"';
-			else if (preg_match('/^ *:-+: *$/', $s))$attr[$n] = ' align="center"';
-			else if (preg_match('/^ *:-+ *$/', $s))	$attr[$n] = ' align="left"';
-			else									$attr[$n] = '';
-		}
-		
-		# Parsing span elements, including code spans, character escapes, 
-		# and inline HTML tags, so that pipes inside those gets ignored.
-		$head		= $this->parseSpan($head);
-		$headers	= preg_split('/ *[|] */', $head);
-		$col_count	= count($headers);
-		
-		# Write column headers.
-		$text = "\n";
-		$text .= "\n";
-		$text .= "\n";
-		foreach ($headers as $n => $header)
-			$text .= "  ".$this->runSpanGamut(trim($header))."\n";
-		$text .= "\n";
-		$text .= "\n";
-		
-		# Split content by row.
-		$rows = explode("\n", trim($content, "\n"));
-		
-		$text .= "\n";
-		foreach ($rows as $row) {
-			# Parsing span elements, including code spans, character escapes, 
-			# and inline HTML tags, so that pipes inside those gets ignored.
-			$row = $this->parseSpan($row);
-			
-			# Split row by cell.
-			$row_cells = preg_split('/ *[|] */', $row, $col_count);
-			$row_cells = array_pad($row_cells, $col_count, '');
-			
-			$text .= "\n";
-			foreach ($row_cells as $n => $cell)
-				$text .= "  ".$this->runSpanGamut(trim($cell))."\n";
-			$text .= "\n";
-		}
-		$text .= "\n";
-		$text .= "
    ";
-		
-		return $this->hashBlock($text) . "\n";
-	}
-
-	
-	function doDefLists($text) {
-	#
-	# Form HTML definition lists.
-	#
-		$less_than_tab = $this->tab_width - 1;
-
-		# Re-usable pattern to match any entire dl list:
-		$whole_list_re = '(?>
-			(								# $1 = whole list
-			  (								# $2
-				[ ]{0,'.$less_than_tab.'}
-				((?>.*\S.*\n)+)				# $3 = defined term
-				\n?
-				[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
-			  )
-			  (?s:.+?)
-			  (								# $4
-				  \z
-				|
-				  \n{2,}
-				  (?=\S)
-				  (?!						# Negative lookahead for another term
-					[ ]{0,'.$less_than_tab.'}
-					(?: \S.*\n )+?			# defined term
-					\n?
-					[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
-				  )
-				  (?!						# Negative lookahead for another definition
-					[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition
-				  )
-			  )
-			)
-		)'; // mx
-
-		$text = preg_replace_callback('{
-				(?>\A\n?|(?<=\n\n))
-				'.$whole_list_re.'
-			}mx',
-			array(&$this, '_doDefLists_callback'), $text);
-
-		return $text;
-	}
-	function _doDefLists_callback($matches) {
-		# Re-usable patterns to match list item bullets and number markers:
-		$list = $matches[1];
-		
-		# Turn double returns into triple returns, so that we can make a
-		# paragraph for the last item in a list, if necessary:
-		$result = trim($this->processDefListItems($list));
-		$result = "
    \n" . $result . "\n
    ";
-		return $this->hashBlock($result) . "\n\n";
-	}
-
-
-	function processDefListItems($list_str) {
-	#
-	#	Process the contents of a single definition list, splitting it
-	#	into individual term and definition list items.
-	#
-		$less_than_tab = $this->tab_width - 1;
-		
-		# trim trailing blank lines:
-		$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str);
-
-		# Process definition terms.
-		$list_str = preg_replace_callback('{
-			(?>\A\n?|\n\n+)					# leading line
-			(								# definition terms = $1
-				[ ]{0,'.$less_than_tab.'}	# leading whitespace
-				(?![:][ ]|[ ])				# negative lookahead for a definition 
-											#   mark (colon) or more whitespace.
-				(?> \S.* \n)+?				# actual term (not whitespace).	
-			)			
-			(?=\n?[ ]{0,3}:[ ])				# lookahead for following line feed 
-											#   with a definition mark.
-			}xm',
-			array(&$this, '_processDefListItems_callback_dt'), $list_str);
-
-		# Process actual definitions.
-		$list_str = preg_replace_callback('{
-			\n(\n+)?						# leading line = $1
-			(								# marker space = $2
-				[ ]{0,'.$less_than_tab.'}	# whitespace before colon
-				[:][ ]+						# definition mark (colon)
-			)
-			((?s:.+?))						# definition text = $3
-			(?= \n+ 						# stop at next definition mark,
-				(?:							# next term or end of text
-					[ ]{0,'.$less_than_tab.'} [:][ ]	|
-					
     | \z
-				)						
-			)					
-			}xm',
-			array(&$this, '_processDefListItems_callback_dd'), $list_str);
-
-		return $list_str;
-	}
-	function _processDefListItems_callback_dt($matches) {
-		$terms = explode("\n", trim($matches[1]));
-		$text = '';
-		foreach ($terms as $term) {
-			$term = $this->runSpanGamut(trim($term));
-			$text .= "\n
    " . $term . "
    ";
-		}
-		return $text . "\n";
-	}
-	function _processDefListItems_callback_dd($matches) {
-		$leading_line	= $matches[1];
-		$marker_space	= $matches[2];
-		$def			= $matches[3];
-
-		if ($leading_line || preg_match('/\n{2,}/', $def)) {
-			# Replace marker with the appropriate whitespace indentation
-			$def = str_repeat(' ', strlen($marker_space)) . $def;
-			$def = $this->runBlockGamut($this->outdent($def . "\n\n"));
-			$def = "\n". $def ."\n";
-		}
-		else {
-			$def = rtrim($def);
-			$def = $this->runSpanGamut($this->outdent($def));
-		}
-
-		return "\n
    " . $def . "
    \n";
-	}
-
-
-	function doFencedCodeBlocks($text) {
-	#
-	# Adding the fenced code block syntax to regular Markdown:
-	#
-	# ~~~
-	# Code block
-	# ~~~
-	#
-		$less_than_tab = $this->tab_width;
-		
-		$text = preg_replace_callback('{
-				(?:\n|\A)
-				# 1: Opening marker
-				(
-					~{3,} # Marker: three tilde or more.
-				)
-				[ ]* \n # Whitespace and newline following marker.
-				
-				# 2: Content
-				(
-					(?>
-						(?!\1 [ ]* \n)	# Not a closing marker.
-						.*\n+
-					)+
-				)
-				
-				# Closing marker.
-				\1 [ ]* \n
-			}xm',
-			array(&$this, '_doFencedCodeBlocks_callback'), $text);
-
-		return $text;
-	}
-	function _doFencedCodeBlocks_callback($matches) {
-		$codeblock = $matches[2];
-		$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES);
-		$codeblock = preg_replace_callback('/^\n+/',
-			array(&$this, '_doFencedCodeBlocks_newlines'), $codeblock);
-		$codeblock = "
    $codeblock
    ";
-		return "\n\n".$this->hashBlock($codeblock)."\n\n";
-	}
-	function _doFencedCodeBlocks_newlines($matches) {
-		return str_repeat("empty_element_suffix", 
-			strlen($matches[0]));
-	}
-
-
-	#
-	# Redefining emphasis markers so that emphasis by underscore does not
-	# work in the middle of a word.
-	#
-	var $em_relist = array(
-		''  => '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(? '(?:(? '(?<=\S)(? '(?<=\S)(? tags
-	#
-		# Strip leading and trailing lines:
-		$text = preg_replace('/\A\n+|\n+\z/', '', $text);
-		
-		$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY);
-
-		#
-		# Wrap 
     tags and unhashify HTML blocks
-		#
-		foreach ($grafs as $key => $value) {
-			$value = trim($this->runSpanGamut($value));
-			
-			# Check if this should be enclosed in a paragraph.
-			# Clean tag hashes & block tag hashes are left alone.
-			$is_p = !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value);
-			
-			if ($is_p) {
-				$value = "
    $value
    ";
-			}
-			$grafs[$key] = $value;
-		}
-		
-		# Join grafs in one text, then unhash HTML tags. 
-		$text = implode("\n\n", $grafs);
-		
-		# Finish by removing any tag hashes still present in $text.
-		$text = $this->unhash($text);
-		
-		return $text;
-	}
-	
-	
-	### Footnotes
-	
-	function stripFootnotes($text) {
-	#
-	# Strips link definitions from text, stores the URLs and titles in
-	# hash references.
-	#
-		$less_than_tab = $this->tab_width - 1;
-
-		# Link defs are in the form: [^id]: url "optional title"
-		$text = preg_replace_callback('{
-			^[ ]{0,'.$less_than_tab.'}\[\^(.+?)\][ ]?:	# note_id = $1
-			  [ ]*
-			  \n?					# maybe *one* newline
-			(						# text = $2 (no blank lines allowed)
-				(?:					
-					.+				# actual text
-				|
-					\n				# newlines but 
-					(?!\[\^.+?\]:\s)# negative lookahead for footnote marker.
-					(?!\n+[ ]{0,3}\S)# ensure line is not blank and followed 
-									# by non-indented content
-				)*
-			)		
-			}xm',
-			array(&$this, '_stripFootnotes_callback'),
-			$text);
-		return $text;
-	}
-	function _stripFootnotes_callback($matches) {
-		$note_id = $this->fn_id_prefix . $matches[1];
-		$this->footnotes[$note_id] = $this->outdent($matches[2]);
-		return ''; # String that will replace the block
-	}
-
-
-	function doFootnotes($text) {
-	#
-	# Replace footnote references in $text [^id] with a special text-token 
-	# which will be replaced by the actual footnote marker in appendFootnotes.
-	#
-		if (!$this->in_anchor) {
-			$text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text);
-		}
-		return $text;
-	}
-
-	
-	function appendFootnotes($text) {
-	#
-	# Append footnote list to text.
-	#
-		$text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', 
-			array(&$this, '_appendFootnotes_callback'), $text);
-	
-		if (!empty($this->footnotes_ordered)) {
-			$text .= "\n\n";
-			$text .= "
    \n";
-			$text .= "fn_backlink_class != "") {
-				$class = $this->fn_backlink_class;
-				$class = $this->encodeAttribute($class);
-				$attr .= " class=\"$class\"";
-			}
-			if ($this->fn_backlink_title != "") {
-				$title = $this->fn_backlink_title;
-				$title = $this->encodeAttribute($title);
-				$attr .= " title=\"$title\"";
-			}
-			$num = 0;
-			
-			while (!empty($this->footnotes_ordered)) {
-				$footnote = reset($this->footnotes_ordered);
-				$note_id = key($this->footnotes_ordered);
-				unset($this->footnotes_ordered[$note_id]);
-				
-				$footnote .= "\n"; # Need to append newline before parsing.
-				$footnote = $this->runBlockGamut("$footnote\n");				
-				$footnote = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', 
-					array(&$this, '_appendFootnotes_callback'), $footnote);
-				
-				$attr = str_replace("%%", ++$num, $attr);
-				$note_id = $this->encodeAttribute($note_id);
-				
-				# Add backlink to last paragraph; create new paragraph if needed.
-				$backlink = "↩";
-				if (preg_match('{
    $}', $footnote)) {
-					$footnote = substr($footnote, 0, -4) . " $backlink
    ";
-				} else {
-					$footnote .= "\n\n
    $backlink
    ";
-				}
-				
-				$text .= "
  • \n";
-				$text .= $footnote . "\n";
-				$text .= "
    • \n\n";
-			}
-			
-			$text .= "\n";
-			$text .= "
    ";
-		}
-		return $text;
-	}
-	function _appendFootnotes_callback($matches) {
-		$node_id = $this->fn_id_prefix . $matches[1];
-		
-		# Create footnote marker only if it has a corresponding footnote *and*
-		# the footnote hasn't been used by another marker.
-		if (isset($this->footnotes[$node_id])) {
-			# Transfert footnote content to the ordered list.
-			$this->footnotes_ordered[$node_id] = $this->footnotes[$node_id];
-			unset($this->footnotes[$node_id]);
-			
-			$num = $this->footnote_counter++;
-			$attr = " rel=\"footnote\"";
-			if ($this->fn_link_class != "") {
-				$class = $this->fn_link_class;
-				$class = $this->encodeAttribute($class);
-				$attr .= " class=\"$class\"";
-			}
-			if ($this->fn_link_title != "") {
-				$title = $this->fn_link_title;
-				$title = $this->encodeAttribute($title);
-				$attr .= " title=\"$title\"";
-			}
-			
-			$attr = str_replace("%%", $num, $attr);
-			$node_id = $this->encodeAttribute($node_id);
-			
-			return
-				"".
-				"$num".
-				"";
-		}
-		
-		return "[^".$matches[1]."]";
-	}
-		
-	
-	### Abbreviations ###
-	
-	function stripAbbreviations($text) {
-	#
-	# Strips abbreviations from text, stores titles in hash references.
-	#
-		$less_than_tab = $this->tab_width - 1;
-
-		# Link defs are in the form: [id]*: url "optional title"
-		$text = preg_replace_callback('{
-			^[ ]{0,'.$less_than_tab.'}\*\[(.+?)\][ ]?:	# abbr_id = $1
-			(.*)					# text = $2 (no blank lines allowed)	
-			}xm',
-			array(&$this, '_stripAbbreviations_callback'),
-			$text);
-		return $text;
-	}
-	function _stripAbbreviations_callback($matches) {
-		$abbr_word = $matches[1];
-		$abbr_desc = $matches[2];
-		if ($this->abbr_word_re)
-			$this->abbr_word_re .= '|';
-		$this->abbr_word_re .= preg_quote($abbr_word);
-		$this->abbr_desciptions[$abbr_word] = trim($abbr_desc);
-		return ''; # String that will replace the block
-	}
-	
-	
-	function doAbbreviations($text) {
-	#
-	# Find defined abbreviations in text and wrap them in  elements.
-	#
-		if ($this->abbr_word_re) {
-			// cannot use the /x modifier because abbr_word_re may 
-			// contain significant spaces:
-			$text = preg_replace_callback('{'.
-				'(?abbr_word_re.')'.
-				'(?![\w\x1A])'.
-				'}', 
-				array(&$this, '_doAbbreviations_callback'), $text);
-		}
-		return $text;
-	}
-	function _doAbbreviations_callback($matches) {
-		$abbr = $matches[0];
-		if (isset($this->abbr_desciptions[$abbr])) {
-			$desc = $this->abbr_desciptions[$abbr];
-			if (empty($desc)) {
-				return $this->hashPart("$abbr");
-			} else {
-				$desc = $this->encodeAttribute($desc);
-				return $this->hashPart("$abbr");
-			}
-		} else {
-			return $matches[0];
-		}
-	}
-
-}
-
-
-/*
-
-PHP Markdown Extra
-==================
-
-Description
------------
-
-This is a PHP port of the original Markdown formatter written in Perl 
-by John Gruber. This special "Extra" version of PHP Markdown features 
-further enhancements to the syntax for making additional constructs 
-such as tables and definition list.
-
-Markdown is a text-to-HTML filter; it translates an easy-to-read /
-easy-to-write structured text format into HTML. Markdown's text format
-is most similar to that of plain text email, and supports features such
-as headers, *emphasis*, code blocks, blockquotes, and links.
-
-Markdown's syntax is designed not as a generic markup language, but
-specifically to serve as a front-end to (X)HTML. You can use span-level
-HTML tags anywhere in a Markdown document, and you can use block level
-HTML tags (like 
     and  as well).
-
-For more information about Markdown's syntax, see:
-
-
-
-
-Bugs
-----
-
-To file bug reports please send email to:
-
-
-
-Please include with your report: (1) the example input; (2) the output you
-expected; (3) the output Markdown actually produced.
-
-
-Version History
---------------- 
-
-See the readme file for detailed release notes for this version.
-
-
-Copyright and License
----------------------
-
-PHP Markdown & Extra
-Copyright (c) 2004-2008 Michel Fortin  
-  
-All rights reserved.
-
-Based on Markdown  
-Copyright (c) 2003-2006 John Gruber   
-   
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-*	Redistributions of source code must retain the above copyright notice,
-	this list of conditions and the following disclaimer.
-
-*	Redistributions in binary form must reproduce the above copyright
-	notice, this list of conditions and the following disclaimer in the
-	documentation and/or other materials provided with the distribution.
-
-*	Neither the name "Markdown" nor the names of its contributors may
-	be used to endorse or promote products derived from this software
-	without specific prior written permission.
-
-This software is provided by the copyright holders and contributors "as
-is" and any express or implied warranties, including, but not limited
-to, the implied warranties of merchantability and fitness for a
-particular purpose are disclaimed. In no event shall the copyright owner
-or contributors be liable for any direct, indirect, incidental, special,
-exemplary, or consequential damages (including, but not limited to,
-procurement of substitute goods or services; loss of use, data, or
-profits; or business interruption) however caused and on any theory of
-liability, whether in contract, strict liability, or tort (including
-negligence or otherwise) arising in any way out of the use of this
-software, even if advised of the possibility of such damage.
-
-*/
-?>
\ No newline at end of file
-- 
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