Файл: vendor/intervention/gif/src/Decoders/CommentExtensionDecoder.php
Строк: 66
<?php
declare(strict_types=1);
namespace InterventionGifDecoders;
use InterventionGifBlocksCommentExtension;
class CommentExtensionDecoder extends AbstractDecoder
{
/**
* Decode current source
*
* @return CommentExtension
*/
public function decode(): CommentExtension
{
$this->getNextBytes(2); // skip marker & label
$extension = new CommentExtension();
foreach ($this->decodeComments() as $comment) {
$extension->addComment($comment);
}
return $extension;
}
/**
* Decode comment from current source
*
* @return array<string>
*/
protected function decodeComments(): array
{
$comments = [];
do {
$byte = $this->getNextByte();
$size = $this->decodeBlocksize($byte);
if ($size > 0) {
$comments[] = $this->getNextBytes($size);
}
} while ($byte !== CommentExtension::TERMINATOR);
return $comments;
}
/**
* Decode blocksize of following comment
*
* @param string $byte
* @return int
*/
protected function decodeBlocksize(string $byte): int
{
return (int) @unpack('C', $byte)[1];
}
}