From 07fa16713df55ff6c43a514b99b4f1c1687c6c71 Mon Sep 17 00:00:00 2001
From: Boone Gorges <boonebgorges@git.wordpress.org>
Date: Mon, 18 Apr 2016 03:37:04 +0000
Subject: [PATCH] Include taxonomy term metadata in WXR export.

Because term XML nodes now include termmeta and can thus be much larger, this
changeset also includes adds some newlines and indentation to make the XML
easier to read.

Props Chouby.
See #34062.

git-svn-id: https://develop.svn.wordpress.org/trunk@37240 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-admin/includes/export.php | 70 ++++++++++++++++++++++++++++----
 1 file changed, 61 insertions(+), 9 deletions(-)

diff --git a/src/wp-admin/includes/export.php b/src/wp-admin/includes/export.php
index 4b18c9c0a3..3aa172f93a 100644
--- a/src/wp-admin/includes/export.php
+++ b/src/wp-admin/includes/export.php
@@ -182,7 +182,7 @@ function export_wp( $args = array() ) {
 		if ( empty( $category->name ) )
 			return;
 
-		echo '<wp:cat_name>' . wxr_cdata( $category->name ) . '</wp:cat_name>';
+		echo '<wp:cat_name>' . wxr_cdata( $category->name ) . "</wp:cat_name>\n";
 	}
 
 	/**
@@ -196,7 +196,7 @@ function export_wp( $args = array() ) {
 		if ( empty( $category->description ) )
 			return;
 
-		echo '<wp:category_description>' . wxr_cdata( $category->description ) . '</wp:category_description>';
+		echo '<wp:category_description>' . wxr_cdata( $category->description ) . "</wp:category_description>\n";
 	}
 
 	/**
@@ -210,7 +210,7 @@ function export_wp( $args = array() ) {
 		if ( empty( $tag->name ) )
 			return;
 
-		echo '<wp:tag_name>' . wxr_cdata( $tag->name ) . '</wp:tag_name>';
+		echo '<wp:tag_name>' . wxr_cdata( $tag->name ) . "</wp:tag_name>\n";
 	}
 
 	/**
@@ -224,7 +224,7 @@ function export_wp( $args = array() ) {
 		if ( empty( $tag->description ) )
 			return;
 
-		echo '<wp:tag_description>' . wxr_cdata( $tag->description ) . '</wp:tag_description>';
+		echo '<wp:tag_description>' . wxr_cdata( $tag->description ) . "</wp:tag_description>\n";
 	}
 
 	/**
@@ -238,7 +238,7 @@ function export_wp( $args = array() ) {
 		if ( empty( $term->name ) )
 			return;
 
-		echo '<wp:term_name>' . wxr_cdata( $term->name ) . '</wp:term_name>';
+		echo '<wp:term_name>' . wxr_cdata( $term->name ) . "</wp:term_name>\n";
 	}
 
 	/**
@@ -252,7 +252,38 @@ function export_wp( $args = array() ) {
 		if ( empty( $term->description ) )
 			return;
 
-		echo '<wp:term_description>' . wxr_cdata( $term->description ) . '</wp:term_description>';
+		echo "\t\t<wp:term_description>" . wxr_cdata( $term->description ) . "</wp:term_description>\n";
+	}
+
+	/**
+	 * Output termmeta XML tags for a given term object.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @param WP_Term $term Term object.
+	 */
+	function wxr_term_meta( $term ) {
+		global $wpdb;
+
+		$termmeta = $wpdb->get_results( $wpdb->prepare( "SELECT * FROM $wpdb->termmeta WHERE term_id = %d", $term->term_id ) );
+
+		foreach ( $termmeta as $meta ) {
+			/**
+			 * Filter whether to selectively skip term meta used for WXR exports.
+			 *
+			 * Returning a truthy value to the filter will skip the current meta
+			 * object from being exported.
+			 *
+			 * @since 4.6.0
+			 *
+			 * @param bool   $skip     Whether to skip the current piece of term meta. Default false.
+			 * @param string $meta_key Current meta key.
+			 * @param object $meta     Current meta object.
+			 */
+			if ( ! apply_filters( 'wxr_export_skip_termmeta', false, $meta->meta_key, $meta ) ) {
+				printf( "\t\t<wp:termmeta>\n\t\t\t<wp:meta_key>%s</wp:meta_key>\n\t\t\t<wp:meta_value>%s</wp:meta_value>\n\t\t</wp:termmeta>\n", wxr_cdata( $meta->meta_key ), wxr_cdata( $meta->meta_value ) );
+			}
+		}
 	}
 
 	/**
@@ -386,13 +417,34 @@ function export_wp( $args = array() ) {
 <?php wxr_authors_list( $post_ids ); ?>
 
 <?php foreach ( $cats as $c ) : ?>
-	<wp:category><wp:term_id><?php echo intval( $c->term_id ); ?></wp:term_id><wp:category_nicename><?php echo wxr_cdata( $c->slug ); ?></wp:category_nicename><wp:category_parent><?php echo wxr_cdata( $c->parent ? $cats[$c->parent]->slug : '' ); ?></wp:category_parent><?php wxr_cat_name( $c ); ?><?php wxr_category_description( $c ); ?></wp:category>
+	<wp:category>
+		<wp:term_id><?php echo intval( $c->term_id ); ?></wp:term_id>
+		<wp:category_nicename><?php echo wxr_cdata( $c->slug ); ?></wp:category_nicename>
+		<wp:category_parent><?php echo wxr_cdata( $c->parent ? $cats[$c->parent]->slug : '' ); ?></wp:category_parent>
+		<?php wxr_cat_name( $c );
+		wxr_category_description( $c );
+		wxr_term_meta( $c ); ?>
+	</wp:category>
 <?php endforeach; ?>
 <?php foreach ( $tags as $t ) : ?>
-	<wp:tag><wp:term_id><?php echo intval( $t->term_id ); ?></wp:term_id><wp:tag_slug><?php echo wxr_cdata( $t->slug ); ?></wp:tag_slug><?php wxr_tag_name( $t ); ?><?php wxr_tag_description( $t ); ?></wp:tag>
+	<wp:tag>
+		<wp:term_id><?php echo intval( $t->term_id ); ?></wp:term_id>
+		<wp:tag_slug><?php echo wxr_cdata( $t->slug ); ?></wp:tag_slug>
+		<?php wxr_tag_name( $t );
+		wxr_tag_description( $t );
+		wxr_term_meta( $t ); ?>
+	</wp:tag>
 <?php endforeach; ?>
 <?php foreach ( $terms as $t ) : ?>
-	<wp:term><wp:term_id><?php echo wxr_cdata( $t->term_id ); ?></wp:term_id><wp:term_taxonomy><?php echo wxr_cdata( $t->taxonomy ); ?></wp:term_taxonomy><wp:term_slug><?php echo wxr_cdata( $t->slug ); ?></wp:term_slug><wp:term_parent><?php echo wxr_cdata( $t->parent ? $terms[$t->parent]->slug : '' ); ?></wp:term_parent><?php wxr_term_name( $t ); ?><?php wxr_term_description( $t ); ?></wp:term>
+	<wp:term>
+		<wp:term_id><?php echo wxr_cdata( $t->term_id ); ?></wp:term_id>
+		<wp:term_taxonomy><?php echo wxr_cdata( $t->taxonomy ); ?></wp:term_taxonomy>
+		<wp:term_slug><?php echo wxr_cdata( $t->slug ); ?></wp:term_slug>
+		<wp:term_parent><?php echo wxr_cdata( $t->parent ? $terms[$t->parent]->slug : '' ); ?></wp:term_parent>
+		<?php wxr_term_name( $t );
+		wxr_term_description( $t );
+		wxr_term_meta( $t ); ?>
+	</wp:term>
 <?php endforeach; ?>
 <?php if ( 'all' == $args['content'] ) wxr_nav_menu_terms(); ?>