<?php

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/**

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* Shortcode handler for [bandcamp], which inserts a bandcamp.com

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* music player (iframe, html5)

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*

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* [bandcamp album=119385304]

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* [bandcamp album=3462839126 bgcol=FFFFFF linkcol=4285BB size=venti]

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* [bandcamp track=2446959313]

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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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* Display the Bandcamp shortcode.

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*

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* @param array $atts Shortcode attributes.

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*/

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function shortcode_handler_bandcamp( $atts ) {

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$csswidth = null;

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$cssheight = null;

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// there are no default values, but specify here anyway to explicitly list supported atts.

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$attributes = shortcode_atts(

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array(

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'album' => null, // integer album id.

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'track' => null, // integer track id.

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'video' => null, // integer track id for video player.

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'size' => 'venti', // one of the supported sizes.

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'bgcol' => 'FFFFFF', // hex, no '#' prefix.

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'linkcol' => null, // hex, no '#' prefix.

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'layout' => null, // encoded layout url.

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'width' => null, // integer with optional "%".

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'height' => null, // integer with optional "%".

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'notracklist' => null, // may be string "true" (defaults false).

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'tracklist' => null, // may be string "false" (defaults true).

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// phpcs:ignore Squiz.PHP.CommentedOutCode.Found -- false positive

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'artwork' => null, // may be string "false" (alternately: "none") or "small" (default is large).

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'minimal' => null, // may be string "true" (defaults false).

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'theme' => null, // may be theme identifier string ("light"|"dark" so far).

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'package' => null, // integer package id.

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't' => null, // integer track number.

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'tracks' => null, // comma-separated list of allowed tracks.

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'esig' => null, // hex, no '#' prefix.

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),

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$atts,

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'bandcamp'

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);

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$sizes = array(

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'venti' => array(

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'width' => 400,

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'height' => 100,

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),

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'grande' => array(

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'width' => 300,

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'height' => 100,

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),

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'grande2' => array(

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'width' => 300,

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'height' => 355,

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),

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'grande3' => array(

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'width' => 300,

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'height' => 415,

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),

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'tall_album' => array(

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'width' => 150,

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'height' => 295,

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),

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'tall_track' => array(

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'width' => 150,

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'height' => 270,

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),

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'tall2' => array(

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'width' => 150,

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'height' => 450,

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),

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'short' => array(

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'width' => 46,

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'height' => 23,

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),

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'large' => array(

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'width' => 350,

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'height' => 470,

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),

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'medium' => array(

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'width' => 450,

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'height' => 120,

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),

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'small' => array(

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'width' => 350,

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'height' => 42,

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),

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);

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$sizekey = $attributes['size'];

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$height = null;

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$width = null;

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$is_video = false;

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/*

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* Build iframe url. For audio players, args are appended as

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* extra path segments for historical reasons having to

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* do with an IE-only flash bug which required this URL

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* to contain no querystring. Delay the actual joining

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* of args into a string until after we decide if it's

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* a video player or an audio player

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*/

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$argparts = array();

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if ( ! isset( $attributes['album'] ) && ! isset( $attributes['track'] ) && ! isset( $attributes['video'] ) ) {

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return "[bandcamp: shortcode must include 'track', 'album', or 'video' param]";

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}

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if ( isset( $attributes['track'] ) && is_numeric( $attributes['track'] ) ) {

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$track = esc_attr( $attributes['track'] );

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array_push( $argparts, "track={$track}" );

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} elseif ( isset( $attributes['video'] ) && is_numeric( $attributes['video'] ) ) {

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$track = esc_attr( $attributes['video'] ); // videos are referenced by track id.

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$url = '//bandcamp.com/EmbeddedPlayer/v=2';

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$is_video = true;

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array_push( $argparts, "track={$track}" );

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}

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if ( isset( $attributes['album'] ) && is_numeric( $attributes['album'] ) ) {

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$album = esc_attr( $attributes['album'] );

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array_push( $argparts, "album={$album}" );

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}

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if ( 'tall' === $sizekey ) {

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if ( isset( $attributes['album'] ) ) {

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$sizekey .= '_album';

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} else {

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$sizekey .= '_track';

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}

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}

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// if size specified that we don't recognize, fall back on venti.

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if ( empty( $sizes[ $sizekey ] ) ) {

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$sizekey = 'venti';

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$attributes['size'] = 'venti';

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}

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/*

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* use strict regex for digits + optional % instead of absint for height/width

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* 'width' and 'height' params in the iframe url get the exact string from the shortcode

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* args, whereas the inline style attribute must have "px" added to it if it has no "%"

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*/

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if ( isset( $attributes['width'] ) && preg_match( '|^([0-9]+)(%)?$|', $attributes['width'], $matches ) ) {

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$width = $attributes['width'];

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$csswidth = $attributes['width'];

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if ( count( $matches ) < 3 ) {

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$csswidth .= 'px';

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}

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}

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if ( isset( $attributes['height'] ) && preg_match( '|^([0-9]+)(%)?$|', $attributes['height'], $matches ) ) {

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$height = $attributes['height'];

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$cssheight = $attributes['height'];

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if ( count( $matches ) < 3 ) {

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$cssheight .= 'px';

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}

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}

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if ( ! $height ) {

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$height = $sizes[ $sizekey ]['height'];

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$cssheight = $height . 'px';

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}

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if ( ! $width ) {

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$width = $sizes[ $sizekey ]['width'];

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$csswidth = $width . 'px';

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}

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if ( isset( $attributes['layout'] ) ) {

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array_push( $argparts, "layout={$attributes['layout']}" );

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} elseif ( isset( $attributes['size'] ) && preg_match( '|^[a-zA-Z0-9]+$|', $attributes['size'] ) ) {

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array_push( $argparts, "size={$attributes['size']}" );

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}

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if ( isset( $attributes['bgcol'] ) && preg_match( '|^[0-9A-Fa-f]+$|', $attributes['bgcol'] ) ) {

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array_push( $argparts, "bgcol={$attributes['bgcol']}" );

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}

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if ( isset( $attributes['linkcol'] ) && preg_match( '|^[0-9A-Fa-f]+$|', $attributes['linkcol'] ) ) {

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array_push( $argparts, "linkcol={$attributes['linkcol']}" );

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}

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if ( isset( $attributes['package'] ) && preg_match( '|^[0-9]+$|', $attributes['package'] ) ) {

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array_push( $argparts, "package={$attributes['package']}" );

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}

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if ( isset( $attributes['t'] ) && preg_match( '|^[0-9]+$|', $attributes['t'] ) ) {

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array_push( $argparts, "t={$attributes['t']}" );

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}

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if ( 'true' === $attributes['notracklist'] ) {

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array_push( $argparts, 'notracklist=true' );

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}

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// 'tracklist' arg deprecates 'notracklist=true' to be less weird. note, behavior

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// if both are specified is undefined

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switch ( $attributes['tracklist'] ) {

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case 'false':

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case 'none':

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array_push( $argparts, 'tracklist=false' );

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break;

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}

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switch ( $attributes['artwork'] ) {

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case 'false':

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case 'none':

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case 'small':

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array_push( $argparts, 'artwork=' . $attributes['artwork'] );

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break;

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}

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if ( 'true' === $attributes['minimal'] ) {

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array_push( $argparts, 'minimal=true' );

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}

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if ( isset( $attributes['theme'] ) && preg_match( '|^[a-zA-Z_]+$|', $attributes['theme'] ) ) {

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array_push( $argparts, "theme={$attributes['theme']}" );

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}

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// param 'tracks' is signed digest param 'esig'.

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if ( isset( $attributes['tracks'] ) && preg_match( '|^[0-9\,]+$|', $attributes['tracks'] ) ) {

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if ( isset( $attributes['esig'] ) && preg_match( '|^[0-9A-Fa-f]+$|', $attributes['esig'] ) ) {

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array_push( $argparts, "tracks={$attributes['tracks']}" );

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array_push( $argparts, "esig={$attributes['esig']}" );

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}

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}

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if ( $is_video ) {

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$url = '//bandcamp.com/VideoEmbed?' . implode( '&', $argparts );

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$extra_attrs = " mozallowfullscreen='1' webkitallowfullscreen='1' allowfullscreen='1'";

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} else {

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$url = '//bandcamp.com/EmbeddedPlayer/v=2/' . implode( '/', $argparts ) . '/';

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$extra_attrs = '';

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}

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$iframe = '<iframe width="%s" height="%s" style="position: relative; display: block; width: %s; height: %s;" src="%s" allowtransparency="true" frameborder="0"%s></iframe>';

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$iframe = sprintf( $iframe, esc_attr( $width ), esc_attr( $height ), esc_attr( $csswidth ), esc_attr( $cssheight ), esc_url( $url ), $extra_attrs );

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return $iframe;

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}

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add_shortcode( 'bandcamp', 'shortcode_handler_bandcamp' );

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