<?php

/**

 * WordPress Export Administration API

 *

 * @package WordPress

 * @subpackage Administration

 */

/**

 * Version number for the export format.

 *

 * Bump this when something changes that might affect compatibility.

 *

 * @since unknown

 * @var string

 */

define('WXR_VERSION', '1.0');

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 *

 * @param unknown_type $author

 */

function export_wp($author='') {

global $wpdb, $post_ids, $post;

do_action('export_wp');

$filename = 'wordpress.' . date('Y-m-d') . '.xml';

header('Content-Description: File Transfer');

header("Content-Disposition: attachment; filename=$filename");

header('Content-Type: text/xml; charset=' . get_option('blog_charset'), true);

$where = '';

if ( $author and $author != 'all' ) {

	$author_id = (int) $author;

	$where = $wpdb->prepare(" WHERE post_author = %d ", $author_id);

}

// grab a snapshot of post IDs, just in case it changes during the export

$post_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts $where ORDER BY post_date_gmt ASC");

$categories = (array) get_categories('get=all');

$tags = (array) get_tags('get=all');

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 *

 * @param unknown_type $categories

 */

function wxr_missing_parents($categories) {

	if ( !is_array($categories) || empty($categories) )

		return array();

	foreach ( $categories as $category )

		$parents[$category->term_id] = $category->parent;

	$parents = array_unique(array_diff($parents, array_keys($parents)));

	if ( $zero = array_search('0', $parents) )

		unset($parents[$zero]);

	return $parents;

}

while ( $parents = wxr_missing_parents($categories) ) {

	$found_parents = get_categories("include=" . join(', ', $parents));

	if ( is_array($found_parents) && count($found_parents) )

		$categories = array_merge($categories, $found_parents);

	else

		break;

}

// Put them in order to be inserted with no child going before its parent

$pass = 0;

$passes = 1000 + count($categories);

while ( ( $cat = array_shift($categories) ) && ++$pass < $passes ) {

	if ( $cat->parent == 0 || isset($cats[$cat->parent]) ) {

		$cats[$cat->term_id] = $cat;

	} else {

		$categories[] = $cat;

	}

}

unset($categories);

/**

 * Place string in CDATA tag.

 *

 * @since unknown

 *

 * @param string $str String to place in XML CDATA tag.

 */

function wxr_cdata($str) {

	if ( seems_utf8($str) == false )

		$str = utf8_encode($str);

	// $str = ent2ncr(esc_html($str));

	$str = "<![CDATA[$str" . ( ( substr($str, -1) == ']' ) ? ' ' : '') . "]]>";

	return $str;

}

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 *

 * @return string Site URL.

 */

function wxr_site_url() {

	global $current_site;

	// mu: the base url

	if ( isset($current_site->domain) ) {

		return 'http://'.$current_site->domain.$current_site->path;

	}

	// wp: the blog url

	else {

		return get_bloginfo_rss('url');

	}

}

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 *

 * @param object $c Category Object

 */

function wxr_cat_name($c) {

	if ( empty($c->name) )

		return;

	echo '<wp:cat_name>' . wxr_cdata($c->name) . '</wp:cat_name>';

}

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 *

 * @param object $c Category Object

 */

function wxr_category_description($c) {

	if ( empty($c->description) )

		return;

	echo '<wp:category_description>' . wxr_cdata($c->description) . '</wp:category_description>';

}

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 *

 * @param object $t Tag Object

 */

function wxr_tag_name($t) {

	if ( empty($t->name) )

		return;

	echo '<wp:tag_name>' . wxr_cdata($t->name) . '</wp:tag_name>';

}

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 *

 * @param object $t Tag Object

 */

function wxr_tag_description($t) {

	if ( empty($t->description) )

		return;

	echo '<wp:tag_description>' . wxr_cdata($t->description) . '</wp:tag_description>';

}

/**

 * {@internal Missing Short Description}}

 *

 * @since unknown

 */

function wxr_post_taxonomy() {

	$categories = get_the_category();

	$tags = get_the_tags();

	$the_list = '';

	$filter = 'rss';

	if ( !empty($categories) ) foreach ( (array) $categories as $category ) {

		$cat_name = sanitize_term_field('name', $category->name, $category->term_id, 'category', $filter);

		// for backwards compatibility

		$the_list .= "\n\t\t<category><![CDATA[$cat_name]]></category>\n";

		// forwards compatibility: use a unique identifier for each cat to avoid clashes

		// http://trac.wordpress.org/ticket/5447

		$the_list .= "\n\t\t<category domain=\"category\" nicename=\"{$category->slug}\"><![CDATA[$cat_name]]></category>\n";

	}

	if ( !empty($tags) ) foreach ( (array) $tags as $tag ) {

		$tag_name = sanitize_term_field('name', $tag->name, $tag->term_id, 'post_tag', $filter);

		$the_list .= "\n\t\t<category domain=\"tag\"><![CDATA[$tag_name]]></category>\n";

		// forwards compatibility as above

		$the_list .= "\n\t\t<category domain=\"tag\" nicename=\"{$tag->slug}\"><![CDATA[$tag_name]]></category>\n";

	}

	echo $the_list;

}

echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '"?' . ">\n";

?>

<!-- This is a WordPress eXtended RSS file generated by WordPress as an export of your blog. -->

<!-- It contains information about your blog's posts, comments, and categories. -->

<!-- You may use this file to transfer that content from one site to another. -->

<!-- This file is not intended to serve as a complete backup of your blog. -->

<!-- To import this information into a WordPress blog follow these steps. -->

<!-- 1. Log into that blog as an administrator. -->

<!-- 2. Go to Tools: Import in the blog's admin panels (or Manage: Import in older versions of WordPress). -->

<!-- 3. Choose "WordPress" from the list. -->

<!-- 4. Upload this file using the form provided on that page. -->

<!-- 5. You will first be asked to map the authors in this export file to users -->

<!--    on the blog.  For each author, you may choose to map to an -->

<!--    existing user on the blog or to create a new user -->

<!-- 6. WordPress will then import each of the posts, comments, and categories -->

<!--    contained in this file into your blog -->

<?php the_generator('export');?>

<rss version="2.0"

	xmlns:excerpt="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/excerpt/"

	xmlns:content="http://purl.org/rss/1.0/modules/content/"

	xmlns:wfw="http://wellformedweb.org/CommentAPI/"

	xmlns:dc="http://purl.org/dc/elements/1.1/"

	xmlns:wp="http://wordpress.org/export/<?php echo WXR_VERSION; ?>/"

>

<channel>

	<title><?php bloginfo_rss('name'); ?></title>

	<link><?php bloginfo_rss('url') ?></link>

	<description><?php bloginfo_rss("description") ?></description>

	<pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></pubDate>

	<generator>http://wordpress.org/?v=<?php bloginfo_rss('version'); ?></generator>

	<language><?php echo get_option('rss_language'); ?></language>

	<wp:wxr_version><?php echo WXR_VERSION; ?></wp:wxr_version>

	<wp:base_site_url><?php echo wxr_site_url(); ?></wp:base_site_url>

	<wp:base_blog_url><?php bloginfo_rss('url'); ?></wp:base_blog_url>

<?php if ( $cats ) : foreach ( $cats as $c ) : ?>

	<wp:category><wp:category_nicename><?php echo $c->slug; ?></wp:category_nicename><wp:category_parent><?php echo $c->parent ? $cats[$c->parent]->name : ''; ?></wp:category_parent><?php wxr_cat_name($c); ?><?php wxr_category_description($c); ?></wp:category>

<?php endforeach; endif; ?>

<?php if ( $tags ) : foreach ( $tags as $t ) : ?>

	<wp:tag><wp:tag_slug><?php echo $t->slug; ?></wp:tag_slug><?php wxr_tag_name($t); ?><?php wxr_tag_description($t); ?></wp:tag>

<?php endforeach; endif; ?>

	<?php do_action('rss2_head'); ?>

	<?php if ($post_ids) {

		global $wp_query;

		$wp_query->in_the_loop = true;  // Fake being in the loop.

		// fetch 20 posts at a time rather than loading the entire table into memory

		while ( $next_posts = array_splice($post_ids, 0, 20) ) {

			$where = "WHERE ID IN (".join(',', $next_posts).")";

			$posts = $wpdb->get_results("SELECT * FROM $wpdb->posts $where ORDER BY post_date_gmt ASC");

				foreach ($posts as $post) {

			// Don't export revisions.  They bloat the export.

			if ( 'revision' == $post->post_type )

				continue;

			setup_postdata($post); ?>

<item>

<title><?php echo apply_filters('the_title_rss', $post->post_title); ?></title>

<link><?php the_permalink_rss() ?></link>

<pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_post_time('Y-m-d H:i:s', true), false); ?></pubDate>

<dc:creator><?php echo wxr_cdata(get_the_author()); ?></dc:creator>

<?php wxr_post_taxonomy() ?>

<guid isPermaLink="false"><?php the_guid(); ?></guid>

<description></description>

<content:encoded><?php echo wxr_cdata( apply_filters('the_content_export', $post->post_content) ); ?></content:encoded>

<excerpt:encoded><?php echo wxr_cdata( apply_filters('the_excerpt_export', $post->post_excerpt) ); ?></excerpt:encoded>

<wp:post_id><?php echo $post->ID; ?></wp:post_id>

<wp:post_date><?php echo $post->post_date; ?></wp:post_date>

<wp:post_date_gmt><?php echo $post->post_date_gmt; ?></wp:post_date_gmt>

<wp:comment_status><?php echo $post->comment_status; ?></wp:comment_status>

<wp:ping_status><?php echo $post->ping_status; ?></wp:ping_status>

<wp:post_name><?php echo $post->post_name; ?></wp:post_name>

<wp:status><?php echo $post->post_status; ?></wp:status>

<wp:post_parent><?php echo $post->post_parent; ?></wp:post_parent>

<wp:menu_order><?php echo $post->menu_order; ?></wp:menu_order>

<wp:post_type><?php echo $post->post_type; ?></wp:post_type>

<wp:post_password><?php echo $post->post_password; ?></wp:post_password>

<?php

if ($post->post_type == 'attachment') { ?>

<wp:attachment_url><?php echo wp_get_attachment_url($post->ID); ?></wp:attachment_url>

<?php } ?>

<?php

$postmeta = $wpdb->get_results( $wpdb->prepare("SELECT * FROM $wpdb->postmeta WHERE post_id = %d", $post->ID) );

if ( $postmeta ) {

?>

<?php foreach( $postmeta as $meta ) { ?>

<wp:postmeta>

<wp:meta_key><?php echo $meta->meta_key; ?></wp:meta_key>

<wp:meta_value><?Php echo $meta->meta_value; ?></wp:meta_value>

</wp:postmeta>

<?php } ?>

<?php } ?>

<?php

$comments = $wpdb->get_results( $wpdb->prepare("SELECT * FROM $wpdb->comments WHERE comment_post_ID = %d", $post->ID) );

if ( $comments ) { foreach ( $comments as $c ) { ?>

<wp:comment>

<wp:comment_id><?php echo $c->comment_ID; ?></wp:comment_id>

<wp:comment_author><?php echo wxr_cdata($c->comment_author); ?></wp:comment_author>

<wp:comment_author_email><?php echo $c->comment_author_email; ?></wp:comment_author_email>

<wp:comment_author_url><?php echo $c->comment_author_url; ?></wp:comment_author_url>

<wp:comment_author_IP><?php echo $c->comment_author_IP; ?></wp:comment_author_IP>

<wp:comment_date><?php echo $c->comment_date; ?></wp:comment_date>

<wp:comment_date_gmt><?php echo $c->comment_date_gmt; ?></wp:comment_date_gmt>

<wp:comment_content><?php echo wxr_cdata($c->comment_content) ?></wp:comment_content>

<wp:comment_approved><?php echo $c->comment_approved; ?></wp:comment_approved>

<wp:comment_type><?php echo $c->comment_type; ?></wp:comment_type>

<wp:comment_parent><?php echo $c->comment_parent; ?></wp:comment_parent>

<wp:comment_user_id><?php echo $c->user_id; ?></wp:comment_user_id>

</wp:comment>

<?php } } ?>

	</item>

<?php } } } ?>

</channel>

</rss>

<?php

}

?>