<?php

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/**

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* Flickr Short Code

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* Author: kellan

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* License: BSD/GPL/public domain (take your pick)

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*

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* [flickr video=www.flickr.com/photos/kalakeli/49931239842]

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* [flickr video=49931239842]

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* [flickr video=49931239842 w=200 h=150]

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* [flickr video=49931239842 autoplay="yes" controls="no"]

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* [flickr video=49931239842 autoplay="no" controls="yes" w=200 h=150]

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*

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* <div class="flick_video" style="max-width: 100%;width: 500px;height: 300px;"><video src="https://www.flickr.com/photos/kalakeli/49931239842/play/360p/183f75d545/" controls autoplay ></video></div>

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*

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* @package automattic/jetpack

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*/

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if ( ! defined( 'ABSPATH' ) ) {

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exit( 0 );

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}

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/**

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* Transform embed to shortcode on save.

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*

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* @param string $content Post content.

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*

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* @return string Shortcode or the embed content itself.

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*/

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function flickr_embed_to_shortcode( $content ) {

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if ( ! is_string( $content ) ) {

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return $content;

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}

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if ( str_contains( $content, '<div class="flickr_video"' ) && str_contains( $content, '<video' ) ) {

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return jetpack_flickr_video_to_shortcode( $content );

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} elseif ( preg_match( '/<iframe src="(https?:)?\/\/([\da-z\-]+\.)*?((static)?flickr\.com|flic\.kr)\/[^\"]+\"/', $content ) ) {

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return jetpack_flickr_photo_to_shortcode( $content );

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}

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return $content;

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}

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/**

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* Transforms embed to shortcode on save when the photo param is used.

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* If embed content can not be transformed to a valid shortcode,

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* the embed content itself is returned.

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*

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* @param string $content Embed output.

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*

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* @return string Shortcode or the embed content.

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*/

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function jetpack_flickr_photo_to_shortcode( $content ) {

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preg_match( '/<iframe src=\"([^\"]+)\"(\s+height=\"([^\"]*)\")?(\s+width=\"([^\"]*)\")?/', $content, $matches );

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if ( empty( $matches[1] ) ) {

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return $content;

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}

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$src = esc_attr( str_replace( 'player/', '', $matches[1] ) );

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$height = empty( $matches[3] ) ? '' : esc_attr( $matches[3] );

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$width = empty( $matches[5] ) ? '' : esc_attr( $matches[5] );

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/** This action is documented in modules/shortcodes/youtube.php */

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do_action( 'jetpack_embed_to_shortcode', 'flickr_photo', $src );

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return '[flickr photo="' . $src . '" w=' . $width . ' h=' . $height . ']';

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}

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/**

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* Transforms embed to shortcode on save when the video param is used.

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* If embed content can not be transformed to a valid shortcode,

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* the embed content itself is returned.

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*

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* @param string $content Embed output.

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*

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* @return string Shortcode or the embed content.

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*/

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function jetpack_flickr_video_to_shortcode( $content ) {

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// Get video src.

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preg_match( '/<video src=\"([^\"]+)\"/', $content, $matches );

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if ( empty( $matches[1] ) ) {

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return $content;

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}

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preg_match( '/(https?:)?\/\/([\da-z\-]+\.)*?((static)?flickr\.com|flic\.kr)\/photos\/([^\/]+)\/\d+\//', $matches[1], $matches );

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$video_src = esc_attr( $matches[0] );

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// Get width and height.

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preg_match( '/style=\"max-width: 100%;(width:\s(\d+)px;)?(height:\s(\d+)px;)?/', $content, $matches );

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$width = empty( $matches[2] ) ? '' : 'w=' . esc_attr( $matches[2] );

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$height = empty( $matches[4] ) ? '' : 'h=' . esc_attr( $matches[4] );

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$controls = str_contains( $content, 'controls' ) ? 'yes' : 'no';

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$autoplay = str_contains( $content, 'autoplay' ) ? 'yes' : 'no';

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/** This action is documented in modules/shortcodes/youtube.php */

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do_action( 'jetpack_embed_to_shortcode', 'flickr_video', $video_src );

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return '[flickr video="' . $video_src . '" ' . $width . ' ' . $height . ' controls="' . $controls . '" autoplay="' . $autoplay . '"]';

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}

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if ( jetpack_shortcodes_should_hook_pre_kses() ) {

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add_filter( 'pre_kses', 'flickr_embed_to_shortcode' );

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}

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/**

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* Flickr Shortcode handler.

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*

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* @param array $atts Shortcode attributes.

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*

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* @return string Shortcode Output.

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*/

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function flickr_shortcode_handler( $atts ) {

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$atts = shortcode_atts(

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array(

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'video' => 0,

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'photo' => 0,

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'w' => '',

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'h' => '',

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'controls' => 'yes',

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'autoplay' => '',

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),

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$atts,

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'flickr'

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);

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if ( ! empty( $atts['video'] ) ) {

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$showing = 'video';

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$src = $atts['video'];

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} elseif ( ! empty( $atts['photo'] ) ) {

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$showing = 'photo';

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$src = $atts['photo'];

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} else {

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return '';

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}

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$src = str_replace( 'http://', 'https://', $src );

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if ( 'video' === $showing ) {

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$video_id = flick_shortcode_video_id( $src );

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if ( empty( $video_id ) ) {

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return '';

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}

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$atts = array_map( 'esc_attr', $atts );

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return flickr_shortcode_video_markup( $atts, $video_id, $src );

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} elseif ( 'photo' === $showing ) {

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if ( ! preg_match( '~^(https?:)?//([\da-z\-]+\.)*?((static)?flickr\.com|flic\.kr)/.*~i', $src ) ) {

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return '';

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}

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$height = empty( $atts['h'] ) ? 'auto' : esc_attr( $atts['h'] );

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$src = sprintf( '%s/player/', untrailingslashit( $src ) );

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$allow_full_screen = 'allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen';

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if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) {

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$allow_full_screen = str_replace( ' oallowfullscreen msallowfullscreen', '', $allow_full_screen );

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}

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return sprintf( '<iframe src="%s" height="%s" width="%s" frameborder="0" %s></iframe>', esc_url( $src ), $height, esc_attr( $atts['w'] ), $allow_full_screen );

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}

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return false;

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}

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/**

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* Return HTML markup for a Flickr embed.

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*

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* @param array $atts Shortcode attributes.

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* @param string $id Video ID.

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* @param string $video_param video param of the shortcode.

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*

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* @return string Shortcode ouput for video.

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*/

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function flickr_shortcode_video_markup( $atts, $id, $video_param ) {

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$transient_name = "flickr_video_$id";

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$video_src = get_transient( $transient_name );

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if ( empty( $video_src ) ) {

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$video_url = '';

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if ( ! is_numeric( $video_param ) ) {

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$video_url = $video_param;

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} else {

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// Get the URL of the video from the page of the video.

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$video_page_content = wp_remote_get( "https://flickr.com/photo.gne?id=$video_param" );

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// Bail if we do not get any info from Flickr.

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if ( is_wp_error( $video_page_content ) ) {

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return '';

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}

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// Extract the URL from the og:url meta tag.

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preg_match( '/property=\"og:url\"\scontent=\"([^\"]+)\"/', $video_page_content['body'], $matches );

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if ( empty( $matches[1] ) ) {

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return '';

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}

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$video_url = $matches[1];

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}

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$provider = 'https://www.flickr.com/services/oembed/';

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$oembed = _wp_oembed_get_object();

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$data = (array) $oembed->fetch( $provider, $video_url );

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if ( empty( $data['html'] ) ) {

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return '';

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}

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// Get the embed url.

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preg_match( '/src=\"([^\"]+)\"/', $data['html'], $matches );

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if ( empty( $matches[1] ) ) {

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return '';

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}

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$embed_url = $matches[1];

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$embed_page = wp_remote_get( $embed_url );

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// Bail if the request returns an error.

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if ( ! is_array( $embed_page ) ) {

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return '';

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}

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// Get the video url from embed html markup.

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preg_match( '/video.+src=\"([^\"]+)\"/', $embed_page['body'], $matches );

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if ( ! empty( $matches[1] ) ) {

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$video_src = $matches[1];

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set_transient( $transient_name, $video_src, 2592000 ); // 30 days transient.

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}

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}

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$style = 'max-width: 100%;';

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if ( ! empty( $atts['w'] ) && is_numeric( $atts['w'] ) ) {

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$style .= sprintf( 'width: %dpx;', $atts['w'] );

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}

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if ( ! empty( $atts['h'] ) && is_numeric( $atts['h'] ) ) {

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$style .= sprintf( 'height: %dpx;', $atts['h'] );

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}

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$controls = 'yes' === $atts['controls'] ? 'controls' : '';

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$autoplay = 'yes' === $atts['autoplay'] ? 'autoplay' : '';

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return sprintf(

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'<div class="flick_video" style="%s"><video src="%s" %s %s /></div>',

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esc_attr( $style ),

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esc_attr( $video_src ),

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$controls,

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$autoplay

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);

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}

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/**

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* Extract the id of the flickr video from the video param.

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*

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* @param string $video_param Video parameter of the shortcode.

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*

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* @return string|boolean ID of the video or false in case the ID can not be extracted.

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*/

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function flick_shortcode_video_id( $video_param ) {

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if ( preg_match( '/^https?:\/\/(www\.)?flickr\.com\/.+/', $video_param ) || preg_match( '/^https?:\/\/flic\.kr\/.+/', $video_param ) ) {

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// Extract the video id from the url.

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preg_match( '/\d+/', $video_param, $matches );

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if ( empty( $matches ) ) {

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return false;

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}

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return $matches[0];

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} elseif ( is_numeric( $video_param ) ) {

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return $video_param;

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}

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return false;

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}

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add_shortcode( 'flickr', 'flickr_shortcode_handler' );

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// Override core's Flickr support because Flickr oEmbed doesn't support web embeds.

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wp_embed_register_handler( 'flickr', '#https?://(www\.)?flickr\.com/.*#i', 'jetpack_flickr_oembed_handler' );

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/**

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* Callback to modify output of embedded Vimeo video using Jetpack's shortcode.

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*

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* @since 3.9

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*

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* @param array $matches Regex partial matches against the URL passed.

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* @param array $attr Attributes received in embed response.

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* @param string $url Requested URL to be embedded.

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*

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* @return string Return output of Vimeo shortcode with the proper markup.

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*/

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function jetpack_flickr_oembed_handler( $matches, $attr, $url ) {

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/*

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* Legacy slideshow embeds end with /show/

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* e.g. https://www.flickr.com/photos/yarnaholic/sets/72157615194738969/show/

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*/

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if ( '/show/' !== substr( $url, -strlen( '/show/' ) ) ) {

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// These lookups need cached, as they don't use WP_Embed (which caches).

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$cache_key = md5( $url . wp_json_encode( $attr ) );

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$cache_group = 'oembed_flickr';

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$html = wp_cache_get( $cache_key, $cache_group );

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if ( false === $html ) {

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$html = _wp_oembed_get_object()->get_html( $url, $attr );

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wp_cache_set( $cache_key, $html, $cache_group, 60 * MINUTE_IN_SECONDS );

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}

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return $html;

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}

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return flickr_shortcode_handler( array( 'photo' => $url ) );

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}

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