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<?php |
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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\Autolink; |
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use s9e\TextFormatter\Plugins\ParserBase; |
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class Parser extends ParserBase |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function parse($text, array $matches) |
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{ |
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foreach ($matches as $m) |
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{ |
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// Linkify the trimmed URL |
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$this->linkifyUrl($m[0][1], $this->trimUrl($m[0][0])); |
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} |
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} |
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/** |
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* Linkify given URL at given position |
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* |
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* @param integer $tagPos URL's position in the text |
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* @param string $url URL |
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* @return void |
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*/ |
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protected function linkifyUrl($tagPos, $url) |
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{ |
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// Create a zero-width end tag right after the URL |
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$endPos = $tagPos + strlen($url); |
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$endTag = $this->parser->addEndTag($this->config['tagName'], $endPos, 0); |
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// If the URL starts with "www." we prepend "http://" |
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if ($url[3] === '.') |
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$url = 'http://' . $url; |
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} |
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// Create a zero-width start tag right before the URL, with a slightly worse priority to |
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// allow specialized plugins to use the URL instead |
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$startTag = $this->parser->addStartTag($this->config['tagName'], $tagPos, 0, 1); |
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$startTag->setAttribute($this->config['attrName'], $url); |
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// Pair the tags together |
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$startTag->pairWith($endTag); |
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// Protect the tag's content from partial replacements with a low priority tag |
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$contentTag = $this->parser->addVerbatim($tagPos, $endPos - $tagPos, 1000); |
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$startTag->cascadeInvalidationTo($contentTag); |
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} |
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/** |
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* Remove trailing punctuation from given URL |
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* |
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* We remove most ASCII non-letters and Unicode punctuation from the end of the string. |
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* Exceptions: |
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* - dashes and underscores, (base64 IDs could end with one) |
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* - equal signs, (because of "foo?bar=") |
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* - trailing slashes, |
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* - closing parentheses. (they are balanced separately) |
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* |
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* @param string $url Original URL |
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* @return string Trimmed URL |
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*/ |
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protected function trimUrl($url) |
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{ |
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return preg_replace('#(?:(?![-=)/_])[\\s!-.:-@[-`{-~\\pP])+$#Du', '', $url); |
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} |
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} |
s9e /
TextFormatter
