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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\Passes; |
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use s9e\TextFormatter\Plugins\Litedown\Parser\LinkAttributesSetter; |
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class Images extends AbstractPass |
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{ |
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use LinkAttributesSetter; |
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/** |
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* {@inheritdoc} |
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*/ |
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263 |
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public function parse() |
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{ |
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$pos = $this->text->indexOf(' !== false) |
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{ |
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$this->parseInlineImages(); |
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} |
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if ($this->text->hasReferences) |
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{ |
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$this->parseReferenceImages(); |
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} |
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} |
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/** |
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* Add an image tag for given text span |
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* |
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* @param integer $startPos Start tag position |
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* @param integer $endPos End tag position |
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* @param integer $endLen End tag length |
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* @param string $linkInfo URL optionally followed by space and a title |
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* @param string $alt Value for the alt attribute |
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* @return void |
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*/ |
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protected function addImageTag($startPos, $endPos, $endLen, $linkInfo, $alt) |
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{ |
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$tag = $this->parser->addTagPair('IMG', $startPos, 2, $endPos, $endLen); |
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$this->setLinkAttributes($tag, $linkInfo, 'src'); |
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$tag->setAttribute('alt', $this->text->decode($alt)); |
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// Overwrite the markup |
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$this->text->overwrite($startPos, $endPos + $endLen - $startPos); |
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} |
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/** |
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* Parse inline images markup |
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* |
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* @return void |
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*/ |
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protected function parseInlineImages() |
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{ |
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preg_match_all( |
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'/!\\[(?:[^\\x17[\\]]|\\[[^\\x17[\\]]*\\])*\\]\\(( *(?:[^\\x17\\s()]|\\([^\\x17\\s()]*\\))*(?=[ )]) *(?:"[^\\x17]*?"|\'[^\\x17]*?\'|\\([^\\x17)]*\\))? *)\\)/', |
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$this->text, |
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$matches, |
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PREG_OFFSET_CAPTURE | PREG_SET_ORDER |
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); |
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foreach ($matches as $m) |
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{ |
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$linkInfo = $m[1][0]; |
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$startPos = $m[0][1]; |
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$endLen = 3 + strlen($linkInfo); |
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$endPos = $startPos + strlen($m[0][0]) - $endLen; |
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$alt = substr($m[0][0], 2, strlen($m[0][0]) - $endLen - 2); |
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$this->addImageTag($startPos, $endPos, $endLen, $linkInfo, $alt); |
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} |
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} |
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/** |
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* Parse reference images markup |
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* |
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* @return void |
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*/ |
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protected function parseReferenceImages() |
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{ |
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preg_match_all( |
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'/!\\[((?:[^\\x17[\\]]|\\[[^\\x17[\\]]*\\])*)\\](?: ?\\[([^\\x17[\\]]+)\\])?/', |
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$this->text, |
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$matches, |
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PREG_OFFSET_CAPTURE | PREG_SET_ORDER |
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); |
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foreach ($matches as $m) |
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{ |
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$startPos = $m[0][1]; |
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$endPos = $startPos + 2 + strlen($m[1][0]); |
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$endLen = 1; |
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$alt = $m[1][0]; |
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$id = $alt; |
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if (isset($m[2][0], $this->text->linkReferences[$m[2][0]])) |
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{ |
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$endLen = strlen($m[0][0]) - strlen($alt) - 2; |
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$id = $m[2][0]; |
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} |
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elseif (!isset($this->text->linkReferences[$id])) |
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{ |
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continue; |
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} |
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$this->addImageTag($startPos, $endPos, $endLen, $this->text->linkReferences[$id], $alt); |
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} |
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} |
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} |
s9e /
TextFormatter
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.