4 files changed, 203 insertions, 21 deletions
diff --git a/phpBB/develop/export_events_for_wiki.php b/phpBB/develop/export_events_for_wiki.php
index 2096e9c858..be16e5e7cd 100644
--- a/phpBB/develop/export_events_for_wiki.php
+++ b/phpBB/develop/export_events_for_wiki.php
@@ -18,15 +18,19 @@ if (php_sapi_name() != 'cli')
 
 $phpEx = substr(strrchr(__FILE__, '.'), 1);
 $phpbb_root_path = __DIR__ . '/../';
+define('IN_PHPBB', true);
 
 function usage()
 {
-	echo "Usage: export_events_for_wiki.php COMMAND [EXTENSION]\n";
+	echo "Usage: export_events_for_wiki.php COMMAND [VERSION] [EXTENSION]\n";
 	echo "\n";
 	echo "COMMAND:\n";
 	echo "    all:\n";
 	echo "        Generate the complete wikipage for https://wiki.phpbb.com/Event_List\n";
 	echo "\n";
+	echo "    diff:\n";
+	echo "        Generate the Event Diff for the release highlights\n";
+	echo "\n";
 	echo "    php:\n";
 	echo "        Generate the PHP event section of Event_List\n";
 	echo "\n";
@@ -36,6 +40,9 @@ function usage()
 	echo "    styles:\n";
 	echo "        Generate the Styles Template event section of Event_List\n";
 	echo "\n";
+	echo "VERSION (diff only):\n";
+	echo "    Filter events (minimum version)\n";
+	echo "\n";
 	echo "EXTENSION (Optional):\n";
 	echo "    If not given, only core events will be exported.\n";
 	echo "    Otherwise only events from the extension will be exported.\n";
@@ -55,20 +62,32 @@ validate_argument_count($argc, 1);
 
 $action = $argv[1];
 $extension = isset($argv[2]) ? $argv[2] : null;
+$min_version = null;
 require __DIR__ . '/../phpbb/event/php_exporter.' . $phpEx;
 require __DIR__ . '/../phpbb/event/md_exporter.' . $phpEx;
+require __DIR__ . '/../includes/functions.' . $phpEx;
 require __DIR__ . '/../phpbb/event/recursive_event_filter_iterator.' . $phpEx;
 require __DIR__ . '/../phpbb/recursive_dot_prefix_filter_iterator.' . $phpEx;
 
 switch ($action)
 {
+
+	case 'diff':
+		echo '== Event changes ==' . "\n";
+		$min_version = $extension;
+		$extension = isset($argv[3]) ? $argv[3] : null;
+
 	case 'all':
-		echo '__FORCETOC__' . "\n";
+		if ($action === 'all')
+		{
+			echo '__FORCETOC__' . "\n";
+		}
+
 
 	case 'php':
-		$exporter = new \phpbb\event\php_exporter($phpbb_root_path, $extension);
+		$exporter = new \phpbb\event\php_exporter($phpbb_root_path, $extension, $min_version);
 		$exporter->crawl_phpbb_directory_php();
-		echo $exporter->export_events_for_wiki();
+		echo $exporter->export_events_for_wiki($action);
 
 		if ($action === 'php')
 		{
@@ -78,9 +97,16 @@ switch ($action)
 		// no break;
 
 	case 'styles':
-		$exporter = new \phpbb\event\md_exporter($phpbb_root_path, $extension);
-		$exporter->crawl_phpbb_directory_styles('docs/events.md');
-		echo $exporter->export_events_for_wiki();
+		$exporter = new \phpbb\event\md_exporter($phpbb_root_path, $extension, $min_version);
+		if ($min_version && $action === 'diff')
+		{
+			$exporter->crawl_eventsmd('docs/events.md', 'styles');
+		}
+		else
+		{
+			$exporter->crawl_phpbb_directory_styles('docs/events.md');
+		}
+		echo $exporter->export_events_for_wiki($action);
 
 		if ($action === 'styles')
 		{
@@ -90,9 +116,16 @@ switch ($action)
 		// no break;
 
 	case 'adm':
-		$exporter = new \phpbb\event\md_exporter($phpbb_root_path, $extension);
-		$exporter->crawl_phpbb_directory_adm('docs/events.md');
-		echo $exporter->export_events_for_wiki();
+		$exporter = new \phpbb\event\md_exporter($phpbb_root_path, $extension, $min_version);
+		if ($min_version && $action === 'diff')
+		{
+			$exporter->crawl_eventsmd('docs/events.md', 'adm');
+		}
+		else
+		{
+			$exporter->crawl_phpbb_directory_adm('docs/events.md');
+		}
+		echo $exporter->export_events_for_wiki($action);
 
 		if ($action === 'all')
 		{
diff --git a/phpBB/includes/ucp/ucp_prefs.php b/phpBB/includes/ucp/ucp_prefs.php
index cbaa71c33e..215a870007 100644
--- a/phpBB/includes/ucp/ucp_prefs.php
+++ b/phpBB/includes/ucp/ucp_prefs.php
@@ -69,7 +69,7 @@ class ucp_prefs
 				* @var	array	data		Array with current ucp options data
 				* @var	array	error		Array with list of errors
 				* @since 3.1.0-a1
-				* @changed 3.1.4-rc1 Added error variable to the event
+				* @changed 3.1.4-RC1 Added error variable to the event
 				*/
 				$vars = array('submit', 'data', 'error');
 				extract($phpbb_dispatcher->trigger_event('core.ucp_prefs_personal_data', compact($vars)));
diff --git a/phpBB/phpbb/event/md_exporter.php b/phpBB/phpbb/event/md_exporter.php
index 84b10e79c1..05e898a157 100644
--- a/phpBB/phpbb/event/md_exporter.php
+++ b/phpBB/phpbb/event/md_exporter.php
@@ -24,6 +24,12 @@ class md_exporter
 	/** @var string phpBB Root Path */
 	protected $root_path;
 
+	/** @var string The minimum version for the events to return */
+	protected $min_version;
+
+	/** @var string The maximum version for the events to return */
+	protected $max_version;
+
 	/** @var string */
 	protected $filter;
 
@@ -36,8 +42,10 @@ class md_exporter
 	/**
 	* @param string $phpbb_root_path
 	* @param mixed $extension	String 'vendor/ext' to filter, null for phpBB core
+	* @param string $min_version
+	* @param string $max_version
 	*/
-	public function __construct($phpbb_root_path, $extension = null)
+	public function __construct($phpbb_root_path, $extension = null, $min_version = null, $max_version = null)
 	{
 		$this->root_path = $phpbb_root_path;
 		$this->path = $this->root_path;
@@ -49,6 +57,8 @@ class md_exporter
 		$this->events = array();
 		$this->events_by_file = array();
 		$this->filter = $this->current_event = '';
+		$this->min_version = $min_version;
+		$this->max_version = $max_version;
 	}
 
 	/**
@@ -152,6 +162,11 @@ class md_exporter
 			$files = $this->validate_file_list($file_details);
 			$since = $this->validate_since($since);
 
+			if (!$this->version_is_filtered($since))
+			{
+				continue;
+			}
+
 			$this->events[$event_name] = array(
 				'event'			=> $this->current_event,
 				'files'			=> $files,
@@ -164,20 +179,47 @@ class md_exporter
 	}
 
 	/**
+	 * The version to check
+	 *
+	 * @param string $version
+	 */
+	protected function version_is_filtered($version)
+	{
+		return (!$this->min_version || phpbb_version_compare($this->min_version, $version, '<='))
+		&& (!$this->max_version || phpbb_version_compare($this->max_version, $version, '>='));
+	}
+
+	/**
 	* Format the php events as a wiki table
+	*
+	* @param string $action
 	* @return string		Number of events found
 	*/
-	public function export_events_for_wiki()
+	public function export_events_for_wiki($action = '')
 	{
 		if ($this->filter === 'adm')
 		{
-			$wiki_page = '= ACP Template Events =' . "\n";
+			if ($action === 'diff')
+			{
+				$wiki_page = '=== ACP Template Events ===' . "\n";
+			}
+			else
+			{
+				$wiki_page = '= ACP Template Events =' . "\n";
+			}
 			$wiki_page .= '{| class="zebra sortable" cellspacing="0" cellpadding="5"' . "\n";
 			$wiki_page .= '! Identifier !! Placement !! Added in Release !! Explanation' . "\n";
 		}
 		else
 		{
-			$wiki_page = '= Template Events =' . "\n";
+			if ($action === 'diff')
+			{
+				$wiki_page = '=== Template Events ===' . "\n";
+			}
+			else
+			{
+				$wiki_page = '= Template Events =' . "\n";
+			}
 			$wiki_page .= '{| class="zebra sortable" cellspacing="0" cellpadding="5"' . "\n";
 			$wiki_page .= '! Identifier !! Prosilver Placement (If applicable) !! Added in Release !! Explanation' . "\n";
 		}
diff --git a/phpBB/phpbb/event/php_exporter.php b/phpBB/phpbb/event/php_exporter.php
index 35144eeeec..8cffa4620f 100644
--- a/phpBB/phpbb/event/php_exporter.php
+++ b/phpBB/phpbb/event/php_exporter.php
@@ -25,6 +25,12 @@ class php_exporter
 	/** @var string phpBB Root Path */
 	protected $root_path;
 
+	/** @var string The minimum version for the events to return */
+	protected $min_version;
+
+	/** @var string The maximum version for the events to return */
+	protected $max_version;
+
 	/** @var string */
 	protected $current_file;
 
@@ -43,14 +49,18 @@ class php_exporter
 	/**
 	* @param string $phpbb_root_path
 	* @param mixed $extension	String 'vendor/ext' to filter, null for phpBB core
+	* @param string $min_version
+	* @param string $max_version
 	*/
-	public function __construct($phpbb_root_path, $extension = null)
+	public function __construct($phpbb_root_path, $extension = null, $min_version = null, $max_version = null)
 	{
 		$this->root_path = $phpbb_root_path;
 		$this->path = $phpbb_root_path;
 		$this->events = $this->file_lines = array();
 		$this->current_file = $this->current_event = '';
 		$this->current_event_line = 0;
+		$this->min_version = $min_version;
+		$this->max_version = $max_version;
 
 		$this->path = $this->root_path;
 		if ($extension)
@@ -148,11 +158,20 @@ class php_exporter
 
 	/**
 	* Format the php events as a wiki table
+	*
+	* @param string $action
 	* @return string
 	*/
-	public function export_events_for_wiki()
+	public function export_events_for_wiki($action = '')
 	{
-		$wiki_page = '= PHP Events (Hook Locations) =' . "\n";
+		if ($action === 'diff')
+		{
+			$wiki_page = '=== PHP Events (Hook Locations) ===' . "\n";
+		}
+		else
+		{
+			$wiki_page = '= PHP Events (Hook Locations) =' . "\n";
+		}
 		$wiki_page .= '{| class="sortable zebra" cellspacing="0" cellpadding="5"' . "\n";
 		$wiki_page .= '! Identifier !! Placement !! Arguments !! Added in Release !! Explanation' . "\n";
 		foreach ($this->events as $event)
@@ -215,6 +234,34 @@ class php_exporter
 					$since_line_num = $this->find_since();
 					$since = $this->validate_since($this->file_lines[$since_line_num]);
 
+					$changed_line_nums = $this->find_changed('changed');
+					if (empty($changed_line_nums))
+					{
+						$changed_line_nums = $this->find_changed('change');
+					}
+					$changed_versions = array();
+					if (!empty($changed_line_nums))
+					{
+						foreach ($changed_line_nums as $changed_line_num)
+						{
+							$changed_versions[] = $this->validate_changed($this->file_lines[$changed_line_num]);
+						}
+					}
+
+					if (!$this->version_is_filtered($since))
+					{
+						$valid_version = false;
+						foreach ($changed_versions as $changed)
+						{
+							$valid_version = $valid_version || $this->version_is_filtered($changed);
+						}
+
+						if (!$valid_version)
+						{
+							continue;
+						}
+					}
+
 					// Find event description line
 					$description_line_num = $this->find_description();
 					$description = substr(trim($this->file_lines[$description_line_num]), strlen('* '));
@@ -243,6 +290,17 @@ class php_exporter
 	}
 
 	/**
+	 * The version to check
+	 *
+	 * @param string $version
+	 */
+	protected function version_is_filtered($version)
+	{
+		return (!$this->min_version || phpbb_version_compare($this->min_version, $version, '<='))
+			&& (!$this->max_version || phpbb_version_compare($this->max_version, $version, '>='));
+	}
+
+	/**
 	* Find the name of the event inside the dispatch() line
 	*
 	* @param int $event_line
@@ -449,6 +507,33 @@ class php_exporter
 	}
 
 	/**
+	* Find the "@changed" Information lines
+	*
+	* @param string $tag_name Should be 'changed' or 'change'
+	* @return array Absolute line numbers
+	* @throws \LogicException
+	*/
+	public function find_changed($tag_name)
+	{
+		$lines = array();
+		$last_line = 0;
+		try
+		{
+			while ($line = $this->find_tag($tag_name, array('since'), $last_line))
+			{
+				$lines[] = $line;
+				$last_line = $line;
+			}
+		}
+		catch (\LogicException $e)
+		{
+			// Not changed? No problem!
+		}
+
+		return $lines;
+	}
+
+	/**
 	* Find the "@event" Information line
 	*
 	* @return int Absolute line number
@@ -464,13 +549,14 @@ class php_exporter
 	* @param string $find_tag		Name of the tag we are trying to find
 	* @param array $disallowed_tags		List of tags that must not appear between
 	*									the tag and the actual event
+	* @param int $skip_to_line		Skip lines until this one
 	* @return int Absolute line number
 	* @throws \LogicException
 	*/
-	public function find_tag($find_tag, $disallowed_tags)
+	public function find_tag($find_tag, $disallowed_tags, $skip_to_line = 0)
 	{
-		$find_tag_line = 0;
-		$found_comment_end = false;
+		$find_tag_line = $skip_to_line ? $this->current_event_line - $skip_to_line + 1 : 0;
+		$found_comment_end = ($skip_to_line) ? true : false;
 		while (strpos(ltrim($this->file_lines[$this->current_event_line - $find_tag_line], "\t "), '* @' . $find_tag . ' ') !== 0)
 		{
 			if ($found_comment_end && ltrim($this->file_lines[$this->current_event_line - $find_tag_line], "\t") === '/**')
@@ -561,6 +647,27 @@ class php_exporter
 	}
 
 	/**
+	* Validate "@changed" Information
+	*
+	* @param string $line
+	* @return string
+	* @throws \LogicException
+	*/
+	public function validate_changed($line)
+	{
+		$match = array();
+		$line = str_replace("\t", ' ', ltrim($line, "\t "));
+		preg_match('#^\* @change(d)? (\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+)?)( (?:.*))?$#', $line, $match);
+		if (!isset($match[2]))
+		{
+			throw new \LogicException("Invalid '@changed' information for event "
+				. "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'");
+		}
+
+		return $match[2];
+	}
+
+	/**
 	* Validate "@event" Information
 	*
 	* @param string $event_name