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<?php |
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namespace Xetaravel\Markdown\Emoji; |
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use League\CommonMark\Inline\Element\Image; |
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use League\CommonMark\Inline\Parser\AbstractInlineParser; |
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use League\CommonMark\InlineParserContext; |
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class EmojiParser extends AbstractInlineParser |
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{ |
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/** |
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* The emoji mappings. |
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* |
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* @var array |
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*/ |
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protected $map; |
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/** |
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* The emoji extension. |
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* |
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* @var string |
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*/ |
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protected $ext = '.png'; |
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/** |
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* The emoji path directory. |
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* |
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* @var string |
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*/ |
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protected $path; |
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/** |
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* Create a new emoji parser instance. |
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* |
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* @return void |
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*/ |
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public function __construct() |
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{ |
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$this->map = include __DIR__ . "/EmojiSheet.php"; |
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$this->path = config('app.url') . '/images/emojis/'; |
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} |
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/** |
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* Get the characters that must be matched. |
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* |
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* @return array |
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*/ |
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public function getCharacters() |
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{ |
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return [':']; |
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} |
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/** |
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* Parse a line and determine if it contains an emoji. If it does, |
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* then we do the necessary. |
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* |
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* @param \League\CommonMark\InlineParserContext $inlineContext |
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* |
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* @return bool |
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*/ |
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public function parse(InlineParserContext $inlineContext) |
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{ |
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$cursor = $inlineContext->getCursor(); |
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$previous = $cursor->peek(-1); |
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if ($previous !== null && $previous !== ' ') { |
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return false; |
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} |
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$saved = $cursor->saveState(); |
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$cursor->advance(); |
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$handle = $cursor->match('/^[a-z0-9\+\-_]+:/'); |
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if (!$handle) { |
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$cursor->restoreState($saved); |
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return false; |
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} |
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$next = $cursor->peek(0); |
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if ($next !== null && $next !== ' ') { |
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$cursor->restoreState($saved); |
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return false; |
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} |
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$key = substr($handle, 0, -1); |
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if (!in_array($key, $this->map)) { |
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$cursor->restoreState($saved); |
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return false; |
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} |
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$fileName = $this->path . $key . $this->ext; |
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$inline = new Image($fileName, $key); |
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$inline->data['attributes'] = [ |
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'class' => 'emoji', |
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'data-emoji' => $key, |
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'width' => '24', |
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'height' => '24', |
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'title' => ':' . $key . ':' |
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]; |
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$inlineContext->getContainer()->appendChild($inline); |
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return true; |
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} |
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} |
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XetaIO /
Xetaravel
Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.