334 lines
12 KiB
PHP
334 lines
12 KiB
PHP
<?php
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/**
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* WordPress eXtended RSS file parser implementations
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*
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* @package WordPress
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* @subpackage Importer
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*/
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/**
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* WXR Parser that uses regular expressions. Fallback for installs without an XML parser.
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*/
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class WXR_Parser_Regex
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{
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var $authors = array();
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var $posts = array();
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var $categories = array();
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var $tags = array();
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var $terms = array();
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var $base_url = '';
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var $base_blog_url = '';
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function __construct()
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{
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$this->has_gzip = is_callable('gzopen');
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}
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function parse($file)
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{
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$wxr_version = $in_multiline = false;
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$multiline_content = '';
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$multiline_tags = array(
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'item' => array('posts', array($this, 'process_post')),
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'wp:category' => array('categories', array($this, 'process_category')),
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'wp:tag' => array('tags', array($this, 'process_tag')),
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'wp:term' => array('terms', array($this, 'process_term')),
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);
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$fp = $this->fopen($file, 'r');
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if ($fp) {
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while (!$this->feof($fp)) {
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$importline = rtrim($this->fgets($fp));
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if (!$wxr_version && preg_match('|<wp:wxr_version>(\d+\.\d+)</wp:wxr_version>|', $importline, $version))
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$wxr_version = $version[1];
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if (false !== strpos($importline, '<wp:base_site_url>')) {
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preg_match('|<wp:base_site_url>(.*?)</wp:base_site_url>|is', $importline, $url);
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$this->base_url = $url[1];
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continue;
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}
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if (false !== strpos($importline, '<wp:base_blog_url>')) {
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preg_match('|<wp:base_blog_url>(.*?)</wp:base_blog_url>|is', $importline, $blog_url);
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$this->base_blog_url = $blog_url[1];
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continue;
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} else {
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$this->base_blog_url = $this->base_url;
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}
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if (false !== strpos($importline, '<wp:author>')) {
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preg_match('|<wp:author>(.*?)</wp:author>|is', $importline, $author);
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$a = $this->process_author($author[1]);
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$this->authors[$a['author_login']] = $a;
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continue;
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}
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foreach ($multiline_tags as $tag => $handler) {
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// Handle multi-line tags on a singular line
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if (preg_match('|<' . $tag . '>(.*?)</' . $tag . '>|is', $importline, $matches)) {
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$this->{$handler[0]}[] = call_user_func($handler[1], $matches[1]);
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} elseif (false !== ($pos = strpos($importline, "<$tag>"))) {
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// Take note of any content after the opening tag
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$multiline_content = trim(substr($importline, $pos + strlen($tag) + 2));
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// We don't want to have this line added to `$is_multiline` below.
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$importline = '';
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$in_multiline = $tag;
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} elseif (false !== ($pos = strpos($importline, "</$tag>"))) {
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$in_multiline = false;
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$multiline_content .= trim(substr($importline, 0, $pos));
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$this->{$handler[0]}[] = call_user_func($handler[1], $multiline_content);
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}
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}
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if ($in_multiline && $importline) {
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$multiline_content .= $importline . "\n";
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}
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}
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$this->fclose($fp);
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}
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if (!$wxr_version)
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return new WP_Error('WXR_parse_error', __('This does not appear to be a WXR file, missing/invalid WXR version number', 'wpmf'));
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return array(
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'authors' => $this->authors,
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'posts' => $this->posts,
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'categories' => $this->categories,
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'tags' => $this->tags,
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'terms' => $this->terms,
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'base_url' => $this->base_url,
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'base_blog_url' => $this->base_blog_url,
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'version' => $wxr_version
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);
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}
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function get_tag($string, $tag)
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{
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preg_match("|<$tag.*?>(.*?)</$tag>|is", $string, $return);
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if (isset($return[1])) {
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if (substr($return[1], 0, 9) == '<![CDATA[') {
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if (strpos($return[1], ']]]]><![CDATA[>') !== false) {
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preg_match_all('|<!\[CDATA\[(.*?)\]\]>|s', $return[1], $matches);
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$return = '';
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foreach ($matches[1] as $match)
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$return .= $match;
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} else {
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$return = preg_replace('|^<!\[CDATA\[(.*)\]\]>$|s', '$1', $return[1]);
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}
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} else {
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$return = $return[1];
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}
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} else {
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$return = '';
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}
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return $return;
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}
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function process_category($c)
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{
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$term = array(
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'term_id' => $this->get_tag($c, 'wp:term_id'),
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'cat_name' => $this->get_tag($c, 'wp:cat_name'),
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'category_nicename' => $this->get_tag($c, 'wp:category_nicename'),
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'category_parent' => $this->get_tag($c, 'wp:category_parent'),
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'category_description' => $this->get_tag($c, 'wp:category_description'),
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);
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$term_meta = $this->process_meta($c, 'wp:termmeta');
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if (!empty($term_meta)) {
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$term['termmeta'] = $term_meta;
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}
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return $term;
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}
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function process_tag($t)
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{
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$term = array(
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'term_id' => $this->get_tag($t, 'wp:term_id'),
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'tag_name' => $this->get_tag($t, 'wp:tag_name'),
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'tag_slug' => $this->get_tag($t, 'wp:tag_slug'),
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'tag_description' => $this->get_tag($t, 'wp:tag_description'),
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);
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$term_meta = $this->process_meta($t, 'wp:termmeta');
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if (!empty($term_meta)) {
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$term['termmeta'] = $term_meta;
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}
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return $term;
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}
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function process_term($t)
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{
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$term = array(
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'term_id' => $this->get_tag($t, 'wp:term_id'),
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'term_taxonomy' => $this->get_tag($t, 'wp:term_taxonomy'),
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'slug' => $this->get_tag($t, 'wp:term_slug'),
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'term_parent' => $this->get_tag($t, 'wp:term_parent'),
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'term_name' => $this->get_tag($t, 'wp:term_name'),
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'term_description' => $this->get_tag($t, 'wp:term_description'),
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);
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$term_meta = $this->process_meta($t, 'wp:termmeta');
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if (!empty($term_meta)) {
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$term['termmeta'] = $term_meta;
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}
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return $term;
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}
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function process_meta($string, $tag)
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{
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$parsed_meta = array();
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preg_match_all("|<$tag>(.+?)</$tag>|is", $string, $meta);
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if (!isset($meta[1])) {
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return $parsed_meta;
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}
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foreach ($meta[1] as $m) {
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$parsed_meta[] = array(
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'key' => $this->get_tag($m, 'wp:meta_key'),
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'value' => $this->get_tag($m, 'wp:meta_value'),
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);
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}
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return $parsed_meta;
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}
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function process_author($a)
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{
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return array(
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'author_id' => $this->get_tag($a, 'wp:author_id'),
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'author_login' => $this->get_tag($a, 'wp:author_login'),
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'author_email' => $this->get_tag($a, 'wp:author_email'),
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'author_display_name' => $this->get_tag($a, 'wp:author_display_name'),
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'author_first_name' => $this->get_tag($a, 'wp:author_first_name'),
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'author_last_name' => $this->get_tag($a, 'wp:author_last_name'),
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);
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}
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function process_post($post)
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{
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$post_id = $this->get_tag($post, 'wp:post_id');
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$post_title = $this->get_tag($post, 'title');
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$post_date = $this->get_tag($post, 'wp:post_date');
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$post_date_gmt = $this->get_tag($post, 'wp:post_date_gmt');
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$comment_status = $this->get_tag($post, 'wp:comment_status');
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$ping_status = $this->get_tag($post, 'wp:ping_status');
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$status = $this->get_tag($post, 'wp:status');
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$post_name = $this->get_tag($post, 'wp:post_name');
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$post_parent = $this->get_tag($post, 'wp:post_parent');
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$menu_order = $this->get_tag($post, 'wp:menu_order');
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$post_type = $this->get_tag($post, 'wp:post_type');
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$post_password = $this->get_tag($post, 'wp:post_password');
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$is_sticky = $this->get_tag($post, 'wp:is_sticky');
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$guid = $this->get_tag($post, 'guid');
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$post_author = $this->get_tag($post, 'dc:creator');
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$post_excerpt = $this->get_tag($post, 'excerpt:encoded');
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$post_excerpt = preg_replace_callback('|<(/?[A-Z]+)|', array(&$this, '_normalize_tag'), $post_excerpt);
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$post_excerpt = str_replace('<br>', '<br />', $post_excerpt);
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$post_excerpt = str_replace('<hr>', '<hr />', $post_excerpt);
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$post_content = $this->get_tag($post, 'content:encoded');
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$post_content = preg_replace_callback('|<(/?[A-Z]+)|', array(&$this, '_normalize_tag'), $post_content);
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$post_content = str_replace('<br>', '<br />', $post_content);
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$post_content = str_replace('<hr>', '<hr />', $post_content);
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$postdata = compact('post_id', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_excerpt',
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'post_title', 'status', 'post_name', 'comment_status', 'ping_status', 'guid', 'post_parent',
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'menu_order', 'post_type', 'post_password', 'is_sticky'
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);
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$attachment_url = $this->get_tag($post, 'wp:attachment_url');
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if ($attachment_url)
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$postdata['attachment_url'] = $attachment_url;
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preg_match_all('|<category domain="([^"]+?)" nicename="([^"]+?)">(.+?)</category>|is', $post, $terms, PREG_SET_ORDER);
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foreach ($terms as $t) {
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$post_terms[] = array(
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'slug' => $t[2],
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'domain' => $t[1],
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'name' => str_replace(array('<![CDATA[', ']]>'), '', $t[3]),
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);
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}
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if (!empty($post_terms)) $postdata['terms'] = $post_terms;
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preg_match_all('|<wp:comment>(.+?)</wp:comment>|is', $post, $comments);
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$comments = $comments[1];
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if ($comments) {
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foreach ($comments as $comment) {
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$post_comments[] = array(
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'comment_id' => $this->get_tag($comment, 'wp:comment_id'),
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'comment_author' => $this->get_tag($comment, 'wp:comment_author'),
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'comment_author_email' => $this->get_tag($comment, 'wp:comment_author_email'),
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'comment_author_IP' => $this->get_tag($comment, 'wp:comment_author_IP'),
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'comment_author_url' => $this->get_tag($comment, 'wp:comment_author_url'),
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'comment_date' => $this->get_tag($comment, 'wp:comment_date'),
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'comment_date_gmt' => $this->get_tag($comment, 'wp:comment_date_gmt'),
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'comment_content' => $this->get_tag($comment, 'wp:comment_content'),
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'comment_approved' => $this->get_tag($comment, 'wp:comment_approved'),
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'comment_type' => $this->get_tag($comment, 'wp:comment_type'),
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'comment_parent' => $this->get_tag($comment, 'wp:comment_parent'),
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'comment_user_id' => $this->get_tag($comment, 'wp:comment_user_id'),
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'commentmeta' => $this->process_meta($comment, 'wp:commentmeta'),
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);
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}
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}
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if (!empty($post_comments)) {
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$postdata['comments'] = $post_comments;
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}
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$post_meta = $this->process_meta($post, 'wp:postmeta');
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if (!empty($post_meta)) {
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$postdata['postmeta'] = $post_meta;
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}
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return $postdata;
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}
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function _normalize_tag($matches)
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{
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return '<' . strtolower($matches[1]);
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}
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function fopen($filename, $mode = 'r')
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{
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if ($this->has_gzip)
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return gzopen($filename, $mode);
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return fopen($filename, $mode);
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}
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function feof($fp)
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{
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if ($this->has_gzip)
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return gzeof($fp);
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return feof($fp);
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}
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function fgets($fp, $len = 8192)
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{
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if ($this->has_gzip)
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return gzgets($fp, $len);
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return fgets($fp, $len);
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}
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function fclose($fp)
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{
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if ($this->has_gzip)
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return gzclose($fp);
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return fclose($fp);
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}
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}
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