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✏️ Editing: productfeed.php

<?php
/**
 * Generates an RSS feed for WP eCommerce Products
 *
 * @package wp-e-commerce
 */

function wpsc_feed_publisher() {

// If the user wants a product feed, then hook-in the product feed function
	if ( isset( $_GET['rss']) && ( $_GET["rss"] == "true" ) &&
	     ( $_GET["action"] == "product_list" ) ) {
    		add_action( 'wp', 'wpsc_generate_product_feed' );
  	}
}

add_action( 'init', 'wpsc_feed_publisher' );

function wpsc_generate_product_feed() {

global $wpdb, $wp_query, $post;

set_time_limit(0);

$xmlformat = '';

if ( isset( $_GET['xmlformat'] ) ) {
    	$xmlformat = $_GET['xmlformat'];
    }

// Don't build up a huge posts cache for the whole store - http://code.google.com/p/wp-e-commerce/issues/detail?id=885
	wp_suspend_cache_addition(true);

$chunk_size = apply_filters ( 'wpsc_productfeed_chunk_size', 50 );

// Don't cache feed under WP Super-Cache
    define( 'DONOTCACHEPAGE', true );

$selected_category = '';
	$selected_product = '';

$args = array(
			'post_type'     => 'wpsc-product',
			'numberposts'   => $chunk_size,
			'offset'        => 0,
			'cache_results' => false,
		);

$args = apply_filters( 'wpsc_productfeed_query_args', $args );

$self = home_url( "/index.php?rss=true&amp;action=product_list$selected_category$selected_product" );

header("Content-Type: application/xml; charset=UTF-8");
	header('Content-Disposition: inline; filename="E-Commerce_Product_List.rss"');

echo "<?xml version='1.0' encoding='UTF-8' ?>\n\r";
	echo "<rss version='2.0' xmlns:atom='http://www.w3.org/2005/Atom'";

$google_checkout_note = false;

if ( $xmlformat == 'google' ) {
		echo ' xmlns:g="http://base.google.com/ns/1.0"';
		// Is Google Checkout available as a payment gateway
        	$selected_gateways = get_option('custom_gateway_options');
		if (in_array('google',$selected_gateways)) {
			$google_checkout_note = true;
		}
	} else {
		echo ' xmlns:product="http://www.buy.com/rss/module/productV2/"';
	}

echo ">\n\r";
	echo "  <channel>\n\r";
	echo "    <title><![CDATA[" . sprintf( _x( '%s Products', 'XML Feed Title', 'wp-e-commerce' ), get_option( 'blogname' ) ) . "]]></title>\n\r";
	echo "    <link>" . admin_url( 'admin.php?page=' . WPSC_DIR_NAME . '/display-log.php' ) . "</link>\n\r";
	echo "    <description>" . _x( 'This is the WP eCommerce Product List RSS feed', 'XML Feed Description', 'wp-e-commerce' ) . "</description>\n\r";
	echo "    <generator>" . _x( 'WP eCommerce Plugin', 'XML Feed Generator', 'wp-e-commerce' ) . "</generator>\n\r";
	echo "    <atom:link href='$self' rel='self' type='application/rss+xml' />\n\r";

$products = get_posts( $args );

while ( count( $products ) ) {

foreach ( $products as $post ) {

setup_postdata( $post );

$purchase_link = get_permalink($post->ID);

echo "    <item>\n\r";
			if ($google_checkout_note) {
				echo "      <g:payment_notes>" . _x( 'Google Wallet', 'Google Checkout Payment Notes in XML Feed', 'wp-e-commerce' ) . "</g:payment_notes>\n\r";
			}
			echo "      <title><![CDATA[".get_the_title()."]]></title>\n\r";
			echo "      <link>$purchase_link</link>\n\r";
			echo "      <description><![CDATA[".apply_filters ('the_content', get_the_content())."]]></description>\n\r";

if ( 'google' === $xmlformat ) {

$sku  = get_post_meta( $post->ID, '_wpsc_sku', true );
				$g_id = ! empty( $sku ) ? $sku : $post->ID;
				$g_id = apply_filters( 'wpsc_google_product_feed_product_id', $g_id, $post );

if ( strlen( $g_id ) > 50 ) {
					$g_id = substr( $g_id, 0, 50 );
				}

echo "      <g:id>$g_id</g:id>\n\r";
			} else {
				echo "      <guid>$purchase_link</guid>\n\r";
			}

$image_link = wpsc_the_product_thumbnail() ;

if ( $image_link !== false ) {

if ( $xmlformat == 'google' ) {
					echo "      <g:image_link><![CDATA[$image_link]]></g:image_link>\n\r";
				} else {
					echo "      <enclosure url='" . esc_url( $image_link ) . "' />\n\r";
				}

}

$price = wpsc_calculate_price($post->ID);
			$currargs = array(
				'display_currency_symbol' => false,
				'display_decimal_point'   => true,
				'display_currency_code'   => false,
				'display_as_html'         => false
			);
			$price = wpsc_currency_display($price, $currargs);

$children = get_children(array('post_parent'=> $post->ID,
						                   'post_type'=>'wpsc-product'));

foreach ($children as $child) {
				$child_price = wpsc_calculate_price($child->ID);

if (($price == 0) && ($child_price > 0)) {
					$price = $child_price;
				} else if ( ($child_price > 0) && ($child_price < $price) ) {
					$price = $child_price;
				}
			}

if ( $xmlformat == 'google' ) {

echo "      <g:price>".$price."</g:price>\n\r";

$google_elements = array();

$product_meta = get_post_custom ( $post->ID );

if ( is_array ( $product_meta ) ) {
				    foreach ( $product_meta as $meta_key => $meta_value ) {
					    if ( stripos( $meta_key, 'g:' ) === 0 )
						    $google_elements[ $meta_key ] = $meta_value;
				    }
                }

$google_elements = apply_filters( 'wpsc_google_elements', array( 'product_id' => $post->ID, 'elements' => $google_elements ) );
				$google_elements = $google_elements['elements'];

$done_condition = FALSE;
	            $done_availability = FALSE;
	            $done_weight = FALSE;

if ( count ( $google_elements ) ) {

foreach ( $google_elements as $element_name => $element_values ) {

foreach ( $element_values as $element_value ) {

echo "      <".$element_name.">";
							echo "<![CDATA[".$element_value."]]>";
							echo "</".$element_name.">\n\r";

}

if ($element_name == 'g:shipping_weight')
							$done_weight = TRUE;

if ($element_name == 'g:condition')
							$done_condition = TRUE;

if ($element_name == 'g:availability')
	                        $done_availability = true;
					}

}

if (!$done_condition)
					echo "      <g:condition>new</g:condition>\n\r";

if (!$done_availability) {

if(wpsc_product_has_stock()) :
	                    $product_availability = "in stock";
	                else :
	                    $product_availability = "out of stock";
	                endif ;

echo " <g:availability>$product_availability</g:availability>";

}

if ( ! $done_weight ) {
					$wpsc_product_meta = get_product_meta( $post->ID, 'product_metadata',true );
					$weight = apply_filters ( 'wpsc_google_shipping_weight', $wpsc_product_meta['weight'], $post->ID );
					if ( $weight && is_numeric ( $weight ) && $weight > 0 ) {
						echo "<g:shipping_weight>$weight pounds</g:shipping_weight>";
					}
				}

} else {

echo "      <product:price>".$price."</product:price>\n\r";

}

echo "    </item>\n\r";

}

$args['offset'] += $chunk_size;
		$products = get_posts ( $args );

}

echo "  </channel>\n\r";
	echo "</rss>";
	exit();
}
?>

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