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<?php declare(strict_types=1); |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2020 The s9e authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\TextFormatter\Plugins\TaskLists; |
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use s9e\TextFormatter\Parser; |
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use s9e\TextFormatter\Parser\Tag; |
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class Helper |
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{ |
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public static function filterListItem(Parser $parser, Tag $listItem, string $text): void |
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{ |
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// Test whether the list item is followed by a task checkbox |
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$pos = $listItem->getPos() + $listItem->getLen(); |
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$pos += strspn($text, ' ', $pos); |
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$str = substr($text, $pos, 3); |
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if (!preg_match('/\\[[ Xx]\\]/', $str)) |
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{ |
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return; |
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} |
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// Create a tag for the task and assign it a random ID |
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$taskId = uniqid(); |
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$taskState = ($str === '[ ]') ? 'incomplete' : 'complete'; |
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$task = $parser->addSelfClosingTag('TASK', $pos, 3); |
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$task->setAttribute('id', $taskId); |
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$task->setAttribute('state', $taskState); |
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} |
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/** |
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* Mark given task complete in XML |
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* |
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* @param string $xml Parsed XML |
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* @param string $id Task's ID |
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* @return string Updated XML |
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*/ |
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public static function setTaskComplete(string $xml, string $id): string |
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{ |
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return self::setTaskState($xml, $id, 'complete', 'x'); |
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} |
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/** |
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* Mark given task incomplete in XML |
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* |
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* @param string $xml Parsed XML |
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* @param string $id Task's ID |
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* @return string Updated XML |
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*/ |
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public static function setTaskIncomplete(string $xml, string $id): string |
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{ |
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return self::setTaskState($xml, $id, 'incomplete', ' '); |
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} |
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/** |
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* Change the state and marker of given task in XML |
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* |
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* @param string $xml Parsed XML |
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* @param string $id Task's ID |
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* @param string $state Task's state ("complete" or "incomplete") |
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* @param string $marker Task marker ("x" or " ") |
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* @return string Updated XML |
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*/ |
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protected static function setTaskState(string $xml, string $id, string $state, string $marker): string |
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{ |
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return preg_replace_callback( |
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'(<TASK(?: [^=]++="[^"]*+")*? id="' . $id . '"\\K([^>]*+)>[^<]*+(?=</TASK>))', |
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function ($m) use ($state, $marker) |
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{ |
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preg_match_all('( ([^=]++)="[^"]*+")', $m[1], $m); |
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$attributes = array_combine($m[1], $m[0]); |
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$attributes['state'] = ' state="' . $state . '"'; |
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ksort($attributes); |
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return implode('', $attributes) . '>[' . $marker . ']'; |
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}, |
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$xml |
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); |
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} |
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/** |
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* Return stats from a parsed representation |
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* |
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* @param string $xml Parsed XML |
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* @return array Number of "complete" and "incomplete" tasks |
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*/ |
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public static function getStats(string $xml): array |
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{ |
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$stats = ['complete' => 0, 'incomplete' => 0]; |
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preg_match_all('(<TASK(?: [^=]++="[^"]*+")*? state="\\K\\w++)', $xml, $m); |
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foreach ($m[0] as $state) |
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{ |
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if (!isset($stats[$state])) |
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{ |
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$stats[$state] = 0; |
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} |
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++$stats[$state]; |
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} |
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return $stats; |
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} |
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} |
s9e /
TextFormatter
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