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<?php |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2017 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\Litedown\Parser; |
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class InlineCode extends AbstractParser |
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{ |
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/** |
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* Add the tag pair for an inline code span |
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* |
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* @param array $left Left marker |
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* @param array $right Right marker |
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* @return void |
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*/ |
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protected function addInlineCodeTags($left, $right) |
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{ |
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$startTagPos = $left['pos']; |
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$startTagLen = $left['len'] + $left['trimAfter']; |
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$endTagPos = $right['pos'] - $right['trimBefore']; |
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$endTagLen = $right['len'] + $right['trimBefore']; |
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$this->parser->addTagPair('C', $startTagPos, $startTagLen, $endTagPos, $endTagLen); |
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$this->overwrite($startTagPos, $endTagPos + $endTagLen - $startTagPos); |
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} |
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/** |
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* Capture and return inline code markers |
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* |
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* @return array |
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*/ |
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protected function getInlineCodeMarkers() |
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{ |
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$pos = strpos($this->text, '`'); |
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if ($pos === false) |
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{ |
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return []; |
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} |
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preg_match_all( |
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'/(`+)(\\s*)[^\\x17`]*/', |
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str_replace("\x1BB", '\\`', $this->text), |
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$matches, |
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PREG_OFFSET_CAPTURE | PREG_SET_ORDER, |
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$pos |
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); |
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$trimNext = 0; |
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$markers = []; |
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foreach ($matches as $m) |
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{ |
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$markers[] = [ |
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'pos' => $m[0][1], |
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'len' => strlen($m[1][0]), |
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'trimBefore' => $trimNext, |
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'trimAfter' => strlen($m[2][0]), |
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'next' => $m[0][1] + strlen($m[0][0]) |
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]; |
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$trimNext = strlen($m[0][0]) - strlen(rtrim($m[0][0])); |
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} |
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return $markers; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function execute() |
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{ |
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$markers = $this->getInlineCodeMarkers(); |
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$i = -1; |
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$cnt = count($markers); |
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while (++$i < ($cnt - 1)) |
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{ |
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$pos = $markers[$i]['next']; |
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$j = $i; |
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if ($this->text[$markers[$i]['pos']] !== '`') |
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{ |
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// Adjust the left marker if its first backtick was escaped |
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++$markers[$i]['pos']; |
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--$markers[$i]['len']; |
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} |
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while (++$j < $cnt && $markers[$j]['pos'] === $pos) |
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{ |
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if ($markers[$j]['len'] === $markers[$i]['len']) |
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{ |
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$this->addInlineCodeTags($markers[$i], $markers[$j]); |
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$i = $j; |
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break; |
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} |
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$pos = $markers[$j]['next']; |
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} |
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} |
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} |
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} |
s9e /
TextFormatter
