diff options
Diffstat (limited to 'phpBB/phpbb/event/php_exporter.php')
| -rw-r--r-- | phpBB/phpbb/event/php_exporter.php | 718 |
1 files changed, 718 insertions, 0 deletions
diff --git a/phpBB/phpbb/event/php_exporter.php b/phpBB/phpbb/event/php_exporter.php new file mode 100644 index 0000000000..ae3553c558 --- /dev/null +++ b/phpBB/phpbb/event/php_exporter.php @@ -0,0 +1,718 @@ +<?php +/** +* +* This file is part of the phpBB Forum Software package. +* +* @copyright (c) phpBB Limited <https://www.phpbb.com> +* @license GNU General Public License, version 2 (GPL-2.0) +* +* For full copyright and license information, please see +* the docs/CREDITS.txt file. +* +*/ + +namespace phpbb\event; + +/** +* Class php_exporter +* Crawls through a list of files and grabs all php-events +*/ +class php_exporter +{ + /** @var string Path where we look for files*/ + protected $path; + + /** @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; + + /** @var string */ + protected $current_event; + + /** @var int */ + protected $current_event_line; + + /** @var array */ + protected $events; + + /** @var array */ + protected $file_lines; + + /** + * @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, $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) + { + $this->path .= 'ext/' . $extension . '/'; + } + } + + /** + * Get the list of all events + * + * @return array Array with events: name => details + */ + public function get_events() + { + return $this->events; + } + + /** + * Set current event data + * + * @param string $name Name of the current event (used for error messages) + * @param int $line Line where the current event is placed in + * @return null + */ + public function set_current_event($name, $line) + { + $this->current_event = $name; + $this->current_event_line = $line; + } + + /** + * Set the content of this file + * + * @param array $content Array with the lines of the file + * @return null + */ + public function set_content($content) + { + $this->file_lines = $content; + } + + /** + * Crawl the phpBB/ directory for php events + * @return int The number of events found + */ + public function crawl_phpbb_directory_php() + { + $files = $this->get_recursive_file_list(); + $this->events = array(); + foreach ($files as $file) + { + $this->crawl_php_file($file); + } + ksort($this->events); + + return sizeof($this->events); + } + + /** + * Returns a list of files in $dir + * + * @return array List of files (including the path) + */ + public function get_recursive_file_list() + { + try + { + $iterator = new \RecursiveIteratorIterator( + new \phpbb\event\recursive_event_filter_iterator( + new \RecursiveDirectoryIterator( + $this->path, + \FilesystemIterator::SKIP_DOTS + ), + $this->path + ), + \RecursiveIteratorIterator::LEAVES_ONLY + ); + } + catch (\Exception $e) + { + return array(); + } + + $files = array(); + foreach ($iterator as $file_info) + { + /** @var \RecursiveDirectoryIterator $file_info */ + $relative_path = $iterator->getInnerIterator()->getSubPathname(); + $files[] = str_replace(DIRECTORY_SEPARATOR, '/', $relative_path); + } + + return $files; + } + + /** + * Format the php events as a wiki table + * + * @param string $action + * @return string + */ + public function export_events_for_wiki($action = '') + { + 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) + { + $wiki_page .= '|- id="' . $event['event'] . '"' . "\n"; + $wiki_page .= '| [[#' . $event['event'] . '|' . $event['event'] . ']] || ' . $event['file'] . ' || ' . implode(', ', $event['arguments']) . ' || ' . $event['since'] . ' || ' . $event['description'] . "\n"; + } + $wiki_page .= '|}' . "\n"; + + return $wiki_page; + } + + /** + * @param string $file + * @return int Number of events found in this file + * @throws \LogicException + */ + public function crawl_php_file($file) + { + $this->current_file = $file; + $this->file_lines = array(); + $content = file_get_contents($this->path . $this->current_file); + $num_events_found = 0; + + if (strpos($content, "dispatcher->trigger_event('") || strpos($content, "dispatcher->dispatch('")) + { + $this->set_content(explode("\n", $content)); + for ($i = 0, $num_lines = sizeof($this->file_lines); $i < $num_lines; $i++) + { + $event_line = false; + $found_trigger_event = strpos($this->file_lines[$i], "dispatcher->trigger_event('"); + $arguments = array(); + if ($found_trigger_event !== false) + { + $event_line = $i; + $this->set_current_event($this->get_event_name($event_line, false), $event_line); + + // Find variables of the event + $arguments = $this->get_vars_from_array(); + $doc_vars = $this->get_vars_from_docblock(); + $this->validate_vars_docblock_array($arguments, $doc_vars); + } + else + { + $found_dispatch = strpos($this->file_lines[$i], "dispatcher->dispatch('"); + if ($found_dispatch !== false) + { + $event_line = $i; + $this->set_current_event($this->get_event_name($event_line, true), $event_line); + } + } + + if ($event_line) + { + // Validate @event + $event_line_num = $this->find_event(); + $this->validate_event($this->current_event, $this->file_lines[$event_line_num]); + + // Validate @since + $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[$description_line_num]), strlen('* ')); + + if (isset($this->events[$this->current_event])) + { + throw new \LogicException("The event '{$this->current_event}' from file " + . "'{$this->current_file}:{$event_line_num}' already exists in file " + . "'{$this->events[$this->current_event]['file']}'", 10); + } + + sort($arguments); + $this->events[$this->current_event] = array( + 'event' => $this->current_event, + 'file' => $this->current_file, + 'arguments' => $arguments, + 'since' => $since, + 'description' => $description, + ); + $num_events_found++; + } + } + } + + return $num_events_found; + } + + /** + * The version to check + * + * @param string $version + * @return bool + */ + protected function version_is_filtered($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 + * @param bool $is_dispatch Do we look for dispatch() or trigger_event() ? + * @return string Name of the event + * @throws \LogicException + */ + public function get_event_name($event_line, $is_dispatch) + { + $event_text_line = $this->file_lines[$event_line]; + $event_text_line = ltrim($event_text_line, "\t "); + + if ($is_dispatch) + { + $regex = '#\$([a-z](?:[a-z0-9_]|->)*)'; + $regex .= '->dispatch\('; + $regex .= '\'' . $this->preg_match_event_name() . '\''; + $regex .= '\);#'; + } + else + { + $regex = '#extract\(\$([a-z](?:[a-z0-9_]|->)*)'; + $regex .= '->trigger_event\('; + $regex .= '\'' . $this->preg_match_event_name() . '\''; + $regex .= ', compact\(\$vars\)\)\);#'; + } + + $match = array(); + preg_match($regex, $event_text_line, $match); + if (!isset($match[2])) + { + throw new \LogicException("Can not find event name in line '{$event_text_line}' " + . "in file '{$this->current_file}:{$event_line}'", 1); + } + + return $match[2]; + } + + /** + * Returns a regex match for the event name + * + * @return string + */ + protected function preg_match_event_name() + { + return '([a-z][a-z0-9_]*(?:\.[a-z][a-z0-9_]*)+)'; + } + + /** + * Find the $vars array + * + * @return array List of variables + * @throws \LogicException + */ + public function get_vars_from_array() + { + $line = ltrim($this->file_lines[$this->current_event_line - 1], "\t"); + if ($line === ');') + { + $vars_array = $this->get_vars_from_multi_line_array(); + } + else + { + $vars_array = $this->get_vars_from_single_line_array($line); + } + + foreach ($vars_array as $var) + { + if (!preg_match('#^([a-zA-Z_][a-zA-Z0-9_]*)$#', $var)) + { + throw new \LogicException("Found invalid var '{$var}' in array for event '{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 3); + } + } + + sort($vars_array); + return $vars_array; + } + + /** + * Find the variables in single line array + * + * @param string $line + * @param bool $throw_multiline Throw an exception when there are too + * many arguments in one line. + * @return array List of variables + * @throws \LogicException + */ + public function get_vars_from_single_line_array($line, $throw_multiline = true) + { + $match = array(); + preg_match('#^\$vars = array\(\'([a-zA-Z0-9_\' ,]+)\'\);$#', $line, $match); + + if (isset($match[1])) + { + $vars_array = explode("', '", $match[1]); + if ($throw_multiline && sizeof($vars_array) > 6) + { + throw new \LogicException('Should use multiple lines for $vars definition ' + . "for event '{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 2); + } + return $vars_array; + } + else + { + throw new \LogicException("Can not find '\$vars = array();'-line for event '{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 1); + } + } + + /** + * Find the variables in single line array + * + * @return array List of variables + * @throws \LogicException + */ + public function get_vars_from_multi_line_array() + { + $current_vars_line = 2; + $var_lines = array(); + while (ltrim($this->file_lines[$this->current_event_line - $current_vars_line], "\t") !== '$vars = array(') + { + $var_lines[] = substr(trim($this->file_lines[$this->current_event_line - $current_vars_line]), 0, -1); + + $current_vars_line++; + if ($current_vars_line > $this->current_event_line) + { + // Reached the start of the file + throw new \LogicException("Can not find end of \$vars array for event '{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 2); + } + } + + return $this->get_vars_from_single_line_array('$vars = array(' . implode(", ", $var_lines) . ');', false); + } + + /** + * Find the $vars array + * + * @return array List of variables + * @throws \LogicException + */ + public function get_vars_from_docblock() + { + $doc_vars = array(); + $current_doc_line = 1; + $found_comment_end = false; + while (ltrim($this->file_lines[$this->current_event_line - $current_doc_line], "\t") !== '/**') + { + if (ltrim($this->file_lines[$this->current_event_line - $current_doc_line], "\t ") === '*/') + { + $found_comment_end = true; + } + + if ($found_comment_end) + { + $var_line = trim($this->file_lines[$this->current_event_line - $current_doc_line]); + $var_line = preg_replace('!\s+!', ' ', $var_line); + if (strpos($var_line, '* @var ') === 0) + { + $doc_line = explode(' ', $var_line, 5); + if (sizeof($doc_line) !== 5) + { + throw new \LogicException("Found invalid line '{$this->file_lines[$this->current_event_line - $current_doc_line]}' " + . "for event '{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 1); + } + $doc_vars[] = $doc_line[3]; + } + } + + $current_doc_line++; + if ($current_doc_line > $this->current_event_line) + { + // Reached the start of the file + throw new \LogicException("Can not find end of docblock for event '{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 2); + } + } + + if (empty($doc_vars)) + { + // Reached the start of the file + throw new \LogicException("Can not find @var lines for event '{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 3); + } + + foreach ($doc_vars as $var) + { + if (!preg_match('#^([a-zA-Z_][a-zA-Z0-9_]*)$#', $var)) + { + throw new \LogicException("Found invalid @var '{$var}' in docblock for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 4); + } + } + + sort($doc_vars); + return $doc_vars; + } + + /** + * Find the "@since" Information line + * + * @return int Absolute line number + * @throws \LogicException + */ + public function find_since() + { + return $this->find_tag('since', array('event', 'var')); + } + + /** + * Find the "@changed" Information lines + * + * @param string $tag_name Should be 'change', not 'changed' + * @return array Absolute line numbers + * @throws \LogicException + */ + public function find_changed($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 + */ + public function find_event() + { + return $this->find_tag('event', array()); + } + + /** + * Find a "@*" Information line + * + * @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, $skip_to_line = 0) + { + $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 - $find_tag_line], "\t") === '/**') + { + // Reached the start of this doc block + throw new \LogicException("Can not find '@{$find_tag}' information for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 1); + } + + foreach ($disallowed_tags as $disallowed_tag) + { + if ($found_comment_end && strpos(ltrim($this->file_lines[$this->current_event_line - $find_tag_line], "\t "), '* @' . $disallowed_tag) === 0) + { + // Found @var after the @since + throw new \LogicException("Found '@{$disallowed_tag}' information after '@{$find_tag}' for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 3); + } + } + + if (ltrim($this->file_lines[$this->current_event_line - $find_tag_line], "\t ") === '*/') + { + $found_comment_end = true; + } + + $find_tag_line++; + if ($find_tag_line >= $this->current_event_line) + { + // Reached the start of the file + throw new \LogicException("Can not find '@{$find_tag}' information for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 2); + } + } + + return $this->current_event_line - $find_tag_line; + } + + /** + * Find a "@*" Information line + * + * @return int Absolute line number + * @throws \LogicException + */ + public function find_description() + { + $find_desc_line = 0; + while (ltrim($this->file_lines[$this->current_event_line - $find_desc_line], "\t") !== '/**') + { + $find_desc_line++; + if ($find_desc_line > $this->current_event_line) + { + // Reached the start of the file + throw new \LogicException("Can not find a description for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 1); + } + } + + $find_desc_line = $this->current_event_line - $find_desc_line + 1; + + $desc = trim($this->file_lines[$find_desc_line]); + if (strpos($desc, '* @') === 0 || $desc[0] !== '*' || substr($desc, 1) == '') + { + // First line of the doc block is a @-line, empty or only contains "*" + throw new \LogicException("Can not find a description for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 2); + } + + return $find_desc_line; + } + + /** + * Validate "@since" Information + * + * @param string $line + * @return string + * @throws \LogicException + */ + public function validate_since($line) + { + $match = array(); + preg_match('#^\* @since (\d+\.\d+\.\d+(?:-(?:a|b|RC|pl)\d+)?)$#', ltrim($line, "\t "), $match); + if (!isset($match[1])) + { + throw new \LogicException("Invalid '@since' information for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'"); + } + + return $match[1]; + } + + /** + * 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('#^\* @changed (\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 + * @param string $line + * @return string + * @throws \LogicException + */ + public function validate_event($event_name, $line) + { + $event = substr(ltrim($line, "\t "), strlen('* @event ')); + + if ($event !== trim($event)) + { + throw new \LogicException("Invalid '@event' information for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 1); + } + + if ($event !== $event_name) + { + throw new \LogicException("Event name does not match '@event' tag for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'", 2); + } + + return $event; + } + + /** + * Validates that two arrays contain the same strings + * + * @param array $vars_array Variables found in the array line + * @param array $vars_docblock Variables found in the doc block + * @return null + * @throws \LogicException + */ + public function validate_vars_docblock_array($vars_array, $vars_docblock) + { + $vars_array = array_unique($vars_array); + $vars_docblock = array_unique($vars_docblock); + $sizeof_vars_array = sizeof($vars_array); + + if ($sizeof_vars_array !== sizeof($vars_docblock) || $sizeof_vars_array !== sizeof(array_intersect($vars_array, $vars_docblock))) + { + throw new \LogicException("\$vars array does not match the list of '@var' tags for event " + . "'{$this->current_event}' in file '{$this->current_file}:{$this->current_event_line}'"); + } + } +} |