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150 lines
3.4 KiB
150 lines
3.4 KiB
<?php |
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/** |
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* Class AMP_Imgur_Embed_Handler |
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* |
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* @package AMP |
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* @since 1.0 |
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*/ |
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/** |
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* Class AMP_Imgur_Embed_Handler |
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*/ |
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class AMP_Imgur_Embed_Handler extends AMP_Base_Embed_Handler { |
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/** |
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* Regex matched to produce output amp-imgur. |
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* |
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* @var string |
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*/ |
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const URL_PATTERN = '#https?://(www\.)?imgur\.com/.*#i'; |
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/** |
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* Register embed. |
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*/ |
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public function register_embed() { |
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if ( version_compare( strtok( get_bloginfo( 'version' ), '-' ), '4.9', '<' ) ) { |
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// Before 4.9 the embedding Imgur is not working properly, register embed for that case. |
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wp_embed_register_handler( 'amp-imgur', self::URL_PATTERN, [ $this, 'oembed' ], -1 ); |
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} else { |
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add_filter( 'embed_oembed_html', [ $this, 'filter_embed_oembed_html' ], 10, 3 ); |
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} |
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} |
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/** |
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* Unregister embed. |
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*/ |
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public function unregister_embed() { |
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if ( version_compare( strtok( get_bloginfo( 'version' ), '-' ), '4.9', '<' ) ) { |
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wp_embed_unregister_handler( 'amp-imgur', -1 ); |
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} else { |
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remove_filter( 'embed_oembed_html', [ $this, 'filter_embed_oembed_html' ], 10 ); |
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} |
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} |
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/** |
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* Oembed. |
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* |
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* @param array $matches Matches. |
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* @param array $attr Attributes. |
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* @param string $url URL. |
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* @return string Embed. |
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*/ |
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public function oembed( $matches, $attr, $url ) { |
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return $this->render( [ 'url' => $url ] ); |
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} |
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/** |
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* Render embed. |
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* |
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* @param array $args Args. |
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* @return string Embed. |
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*/ |
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public function render( $args ) { |
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$args = wp_parse_args( |
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$args, |
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[ |
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'url' => false, |
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] |
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); |
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if ( empty( $args['url'] ) ) { |
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return ''; |
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} |
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$this->did_convert_elements = true; |
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$id = $this->get_imgur_id_from_url( $args['url'] ); |
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if ( false === $id ) { |
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return ''; |
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} |
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return AMP_HTML_Utils::build_tag( |
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'amp-imgur', |
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[ |
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'width' => $this->args['width'], |
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'height' => $this->args['height'], |
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'data-imgur-id' => $id, |
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] |
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); |
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} |
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/** |
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* Filter oEmbed HTML for Imgur to prepare it for AMP. |
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* |
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* @param mixed $return The shortcode callback function to call. |
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* @param string $url The attempted embed URL. |
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* @param array $attr An array of shortcode attributes. |
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* @return string Embed. |
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*/ |
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public function filter_embed_oembed_html( $return, $url, $attr ) { |
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$parsed_url = wp_parse_url( $url ); |
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if ( false !== strpos( $parsed_url['host'], 'imgur.com' ) ) { |
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if ( preg_match( '/width=["\']?(\d+)/', $return, $matches ) ) { |
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$attr['width'] = $matches[1]; |
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} |
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if ( preg_match( '/height=["\']?(\d+)/', $return, $matches ) ) { |
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$attr['height'] = $matches[1]; |
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} |
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if ( empty( $attr['height'] ) ) { |
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return $return; |
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} |
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$attributes = wp_array_slice_assoc( $attr, [ 'width', 'height' ] ); |
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if ( empty( $attr['width'] ) ) { |
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$attributes['layout'] = 'fixed-height'; |
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$attributes['width'] = 'auto'; |
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} |
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$attributes['data-imgur-id'] = $this->get_imgur_id_from_url( $url ); |
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if ( false === $attributes['data-imgur-id'] ) { |
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return $return; |
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} |
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$return = AMP_HTML_Utils::build_tag( |
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'amp-imgur', |
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$attributes |
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); |
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} |
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return $return; |
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} |
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/** |
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* Get Imgur ID from URL. |
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* |
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* @param string $url URL. |
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* @return bool|string ID / false. |
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*/ |
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protected function get_imgur_id_from_url( $url ) { |
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$parsed_url = wp_parse_url( $url ); |
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$pieces = explode( '/gallery/', $parsed_url['path'] ); |
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if ( ! isset( $pieces[1] ) ) { |
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if ( ! preg_match( '/\/([A-Za-z0-9]+)/', $parsed_url['path'], $matches ) ) { |
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return false; |
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} |
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return $matches[1]; |
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} |
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return $pieces[1]; |
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} |
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}
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