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<?php |
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namespace Chrisyue\PhpM3u8\Parser; |
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use Chrisyue\PhpM3u8\Model\Mapping\AttributeMetadatas; |
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use Chrisyue\PhpM3u8\Model\Mapping\TagMetadatas; |
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use Chrisyue\PhpM3u8\Model\MediaSegment; |
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use Chrisyue\PhpM3u8\Model\Tag\AbstractAttributeList; |
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use Chrisyue\PhpM3u8\Model\Mapping\TagMetadata; |
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use Chrisyue\PhpM3u8\Model\Tag\FormattedTagInterface; |
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class Parser |
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{ |
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private $builder; |
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private $tagMetadatas; |
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public function __construct(PlaylistBuilder $builder) |
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{ |
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$this->builder = $builder; |
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$this->tagMetadatas = new TagMetadatas(); |
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$this->builder->initPlaylist(); |
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} |
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public function parseLine($line) |
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{ |
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$line = trim($line); |
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if (empty($line)) { |
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return; |
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} |
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if ('#' === $line[0]) { |
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return $this->handleTag($line); |
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} |
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$this->builder->addUri($line); |
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} |
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public function getPlaylist() |
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{ |
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return $this->builder->getResult(); |
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} |
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private function handleTag($tag) |
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{ |
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list($tag, $value) = array_pad(explode(':', substr($tag, 1)), 2, true); |
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$tagMetadata = $this->tagMetadatas->get($tag); |
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if (null === $tagMetadata) { |
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return; |
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} |
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$class = $tagMetadata->getType(); |
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if (class_exists($class)) { |
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switch (true) { |
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case is_subclass_of($class, AbstractAttributeList::class): |
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$value = $this->createAttrTag($class, $value); |
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break; |
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case is_subclass_of($class, FormattedTagInterface::class): |
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$value = $this->createFormattedTag($class, $value); |
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} |
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} |
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switch ($tagMetadata->getProperty()->getDeclaringClass()->getName()) { |
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case MediaSegment::class: |
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$this->builder->addMediaSegmentTag($tagMetadata, $value); |
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break; |
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default: |
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$this->builder->addPlaylistTag($tagMetadata, $value); |
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} |
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} |
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private function createAttrTag($class, $value) |
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{ |
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$attrMetadatas = new AttributeMetadatas($class); |
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$attrTag = new $class(); |
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$this->parseAttributeListValue($value, function ($key, $val) use ($attrTag, $attrMetadatas) { |
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if (!$attrMetadatas->get($key)) { |
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return; |
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} |
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$metadata = $attrMetadatas->get($key); |
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$metadata->getProperty()->setValue($attrTag, 'string' === $metadata->getType() ? trim($val, '"') : $val); |
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}); |
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return $attrTag; |
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} |
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private function createFormattedTag($class, $value) |
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{ |
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return $class::fromString($value); |
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} |
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private function parseAttributeListValue($value, callable $handler) |
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{ |
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foreach (explode(',', $value) as $attr) { |
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list($key, $value) = explode('=', $attr); |
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$handler($key, $value); |
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} |
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} |
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} |
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chrisyue /
php-m3u8
