189 lines
7.2 KiB
PHP
189 lines
7.2 KiB
PHP
<?php
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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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function shortcode_handler_bandcamp( $atts ) {
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// there are no default values, but specify here anyway
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// to explicitly list supported atts
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$attributes = shortcode_atts( 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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'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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), $atts, 'bandcamp' );
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$sizes = array(
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'venti' => array( 'width' => 400, 'height' => 100 ),
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'grande' => array( 'width' => 300, 'height' => 100 ),
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'grande2' => array( 'width' => 300, 'height' => 355 ),
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'grande3' => array( 'width' => 300, 'height' => 415 ),
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'tall_album' => array( 'width' => 150, 'height' => 295 ),
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'tall_track' => array( 'width' => 150, 'height' => 270 ),
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'tall2' => array( 'width' => 150, 'height' => 450 ),
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'short' => array( 'width' => 46, 'height' => 23 ),
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'large' => array( 'width' => 350, 'height' => 470 ),
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'medium' => array( 'width' => 450, 'height' => 120 ),
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'small' => array( 'width' => 350, 'height' => 42 )
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);
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$sizekey = $attributes['size'];
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$height = null;
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$width = null;
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$isVideo = false;
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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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$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( $attributes['video'] ); // videos are referenced by track id
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$urlbase = "//bandcamp.com/EmbeddedPlayer/v=2";
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$isVideo = 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 ( $sizekey == 'tall' ) {
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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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// 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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if ( isset( $attributes['width'] ) && preg_match( "|^([0-9]+)(%)?$|", $attributes['width'], $matches ) ) {
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$width = $csswidth = $attributes['width'];
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if ( sizeof( $matches ) < 3 ) {
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$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 = $cssheight = $attributes['height'];
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if ( sizeof( $matches ) < 3 ) {
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$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 ( $attributes['notracklist'] == "true" ) {
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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 ( $attributes['minimal'] == "true" ) {
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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 ( $isVideo ) {
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$url = "//bandcamp.com/VideoEmbed?" . join( '&', $argparts );
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$extraAttrs = " mozallowfullscreen='1' webkitallowfullscreen='1' allowfullscreen='1'";
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} else {
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$url = "//bandcamp.com/EmbeddedPlayer/v=2/" . join( '/', $argparts ) . '/';
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$extraAttrs = '';
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}
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return "<iframe width='" . esc_attr( $width ) . "' height='" . esc_attr( $height ) . "' style='position: relative; display: block; width: " . esc_attr( $csswidth ) . "; height: " . esc_attr( $cssheight ) . ";' src='" . esc_url( $url ) . "' allowtransparency='true' frameborder='0'" . $extraAttrs . "></iframe>";
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}
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add_shortcode( 'bandcamp', 'shortcode_handler_bandcamp' );
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