betterdocs / includes / Admin / Importer / Parsers / WXR_Parser_SimpleXML.php

WXR_Parser_SimpleXML.php in BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot 4.9.3, at includes/Admin/Importer/Parsers/WXR_Parser_SimpleXML.php

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1	<?php
2	namespace WPDeveloper\BetterDocs\Admin\Importer\Parsers;
3
4	use WP_Error;
5
6	if ( ! defined( 'ABSPATH' ) ) {
7	exit; // Exit if accessed directly.
8	}
9
10	/**
11	* WordPress extended RSS file parser implementations,
12	* Originally made by WordPress part of WordPress/Importer.
13	* https://plugins.trac.wordpress.org/browser/wordpress-importer/trunk/parsers/class-wxr-parser-simplexml.php
14	*
15	* What was done (by Elementor):
16	* Reformat of the code.
17	* Removed variable '$internal_errors'.
18	* Changed text domain.
19	*/
20
21	/**
22	* WXR Parser that makes use of the SimpleXML PHP extension.
23	*/
24	class WXR_Parser_SimpleXML {
25
26	/**
27	* @param string $file
28	*
29	* @return array\|WP_Error
30	*/
31	public function parse( $file ) {
32	$authors = [];
33	$posts = [];
34	$categories = [];
35	$tags = [];
36	$terms = [];
37
38	libxml_use_internal_errors( true );
39
40	$dom = new \DOMDocument();
41	$old_value = null;
42
43	$libxml_disable_entity_loader_exists = function_exists( 'libxml_disable_entity_loader' );
44
45	if ( $libxml_disable_entity_loader_exists ) {
46	$old_value = libxml_disable_entity_loader( true ); // phpcs:ignore Generic.PHP.DeprecatedFunctions.Deprecated
47	}
48
49	$success = $dom->loadXML( $this->file_get_contents( $file ) );
50
51	if ( $libxml_disable_entity_loader_exists && ! is_null( $old_value ) ) {
52	libxml_disable_entity_loader( $old_value ); // phpcs:ignore Generic.PHP.DeprecatedFunctions.Deprecated
53	}
54
55	if ( ! $success \|\| isset( $dom->doctype ) ) {
56	return new WP_Error( 'SimpleXML_parse_error', esc_html__( 'There was an error when reading this WXR file', 'betterdocs' ), libxml_get_errors() );
57	}
58
59	$xml = simplexml_import_dom( $dom );
60	unset( $dom );
61
62	// Halt if loading produces an error.
63	if ( ! $xml ) {
64	return new WP_Error( 'SimpleXML_parse_error', esc_html__( 'There was an error when reading this WXR file', 'betterdocs' ), libxml_get_errors() );
65	}
66
67	$wxr_version = $xml->xpath( '/rss/channel/wp:wxr_version' );
68	if ( ! $wxr_version ) {
69	return new WP_Error( 'WXR_parse_error', esc_html__( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'betterdocs' ) );
70	}
71
72	$wxr_version = (string) trim( $wxr_version[0] );
73	// Confirm that we are dealing with the correct file format.
74	if ( ! preg_match( '/^\d+\.\d+$/', $wxr_version ) ) {
75	return new WP_Error( 'WXR_parse_error', esc_html__( 'This does not appear to be a WXR file, missing/invalid WXR version number', 'betterdocs' ) );
76	}
77
78	$base_url = $xml->xpath( '/rss/channel/wp:base_site_url' );
79	$base_url = (string) trim( $base_url[0] ?? '' );
80
81	$base_blog_url = $xml->xpath( '/rss/channel/wp:base_blog_url' );
82	if ( $base_blog_url ) {
83	$base_blog_url = (string) trim( $base_blog_url[0] );
84	} else {
85	$base_blog_url = $base_url;
86	}
87
88	$page_on_front = $xml->xpath( '/rss/channel/wp:page_on_front' );
89
90	if ( $page_on_front ) {
91	$page_on_front = (int) $page_on_front[0];
92	}
93
94	$namespaces = $xml->getDocNamespaces();
95	if ( ! isset( $namespaces['wp'] ) ) {
96	$namespaces['wp'] = 'http://wordpress.org/export/1.1/';
97	}
98	if ( ! isset( $namespaces['excerpt'] ) ) {
99	$namespaces['excerpt'] = 'http://wordpress.org/export/1.1/excerpt/';
100	}
101
102	// Grab authors.
103	foreach ( $xml->xpath( '/rss/channel/wp:author' ) as $author_arr ) {
104	$a = $author_arr->children( $namespaces['wp'] );
105	$login = (string) $a->author_login;
106	$authors[ $login ] = [
107	'author_id' => (int) $a->author_id,
108	'author_login' => $login,
109	'author_email' => (string) $a->author_email,
110	'author_display_name' => (string) $a->author_display_name,
111	'author_first_name' => (string) $a->author_first_name,
112	'author_last_name' => (string) $a->author_last_name,
113	];
114	}
115
116	// Grab cats, tags and terms.
117	foreach ( $xml->xpath( '/rss/channel/wp:category' ) as $term_arr ) {
118	$t = $term_arr->children( $namespaces['wp'] );
119	$category = [
120	'term_id' => (int) $t->term_id,
121	'category_nicename' => (string) $t->category_nicename,
122	'category_parent' => (string) $t->category_parent,
123	'cat_name' => (string) $t->cat_name,
124	'category_description' => (string) $t->category_description,
125	];
126
127	foreach ( $t->termmeta as $meta ) {
128	$category['termmeta'][] = [
129	'key' => (string) $meta->meta_key,
130	'value' => (string) $meta->meta_value,
131	];
132	}
133
134	$categories[] = $category;
135	}
136
137	foreach ( $xml->xpath( '/rss/channel/wp:tag' ) as $term_arr ) {
138	$t = $term_arr->children( $namespaces['wp'] );
139	$tag = [
140	'term_id' => (int) $t->term_id,
141	'tag_slug' => (string) $t->tag_slug,
142	'tag_name' => (string) $t->tag_name,
143	'tag_description' => (string) $t->tag_description,
144	];
145
146	foreach ( $t->termmeta as $meta ) {
147	$tag['termmeta'][] = [
148	'key' => (string) $meta->meta_key,
149	'value' => (string) $meta->meta_value,
150	];
151	}
152
153	$tags[] = $tag;
154	}
155
156	foreach ( $xml->xpath( '/rss/channel/wp:term' ) as $term_arr ) {
157	$t = $term_arr->children( $namespaces['wp'] );
158	$term = [
159	'term_id' => (int) $t->term_id,
160	'term_taxonomy' => (string) $t->term_taxonomy,
161	'slug' => (string) $t->term_slug,
162	'term_parent' => (string) $t->term_parent,
163	'term_name' => (string) $t->term_name,
164	'term_description' => (string) $t->term_description,
165	];
166
167	foreach ( $t->termmeta as $meta ) {
168	$term['termmeta'][] = [
169	'key' => (string) $meta->meta_key,
170	'value' => (string) $meta->meta_value,
171	];
172	}
173
174	$terms[] = $term;
175	}
176
177	// Grab posts.
178	foreach ( $xml->channel->item as $item ) {
179	$post = [
180	'post_title' => (string) $item->title,
181	'guid' => (string) $item->guid,
182	];
183
184	$dc = $item->children( 'http://purl.org/dc/elements/1.1/' );
185	$post['post_author'] = (string) $dc->creator;
186
187	$content = $item->children( 'http://purl.org/rss/1.0/modules/content/' );
188	$excerpt = $item->children( $namespaces['excerpt'] );
189	$post['post_content'] = (string) $content->encoded;
190	$post['post_excerpt'] = (string) $excerpt->encoded;
191
192	$wp = $item->children( $namespaces['wp'] );
193	$post['post_id'] = (int) $wp->post_id;
194	$post['post_date'] = (string) $wp->post_date;
195	$post['post_date_gmt'] = (string) $wp->post_date_gmt;
196	$post['comment_status'] = (string) $wp->comment_status;
197	$post['ping_status'] = (string) $wp->ping_status;
198	$post['post_name'] = (string) $wp->post_name;
199	$post['status'] = (string) $wp->status;
200	$post['post_parent'] = (int) $wp->post_parent;
201	$post['menu_order'] = (int) $wp->menu_order;
202	$post['post_type'] = (string) $wp->post_type;
203	$post['post_password'] = (string) $wp->post_password;
204	$post['is_sticky'] = (int) $wp->is_sticky;
205
206	if ( isset( $wp->attachment_url ) ) {
207	$post['attachment_url'] = (string) $wp->attachment_url;
208	}
209
210	foreach ( $item->category as $c ) {
211	$att = $c->attributes();
212	if ( isset( $att['nicename'] ) ) {
213	$post['terms'][] = [
214	'name' => (string) $c,
215	'slug' => (string) $att['nicename'],
216	'domain' => (string) $att['domain'],
217	];
218	}
219	}
220
221	foreach ( $wp->postmeta as $meta ) {
222	$post['postmeta'][] = [
223	'key' => (string) $meta->meta_key,
224	'value' => (string) $meta->meta_value,
225	];
226	}
227
228	foreach ( $wp->comment as $comment ) {
229	$meta = [];
230	if ( isset( $comment->commentmeta ) ) {
231	foreach ( $comment->commentmeta as $m ) {
232	$meta[] = [
233	'key' => (string) $m->meta_key,
234	'value' => (string) $m->meta_value,
235	];
236	}
237	}
238
239	$post['comments'][] = [
240	'comment_id' => (int) $comment->comment_id,
241	'comment_author' => (string) $comment->comment_author,
242	'comment_author_email' => (string) $comment->comment_author_email,
243	'comment_author_IP' => (string) $comment->comment_author_IP,
244	'comment_author_url' => (string) $comment->comment_author_url,
245	'comment_date' => (string) $comment->comment_date,
246	'comment_date_gmt' => (string) $comment->comment_date_gmt,
247	'comment_content' => (string) $comment->comment_content,
248	'comment_approved' => (string) $comment->comment_approved,
249	'comment_type' => (string) $comment->comment_type,
250	'comment_parent' => (string) $comment->comment_parent,
251	'comment_user_id' => (int) $comment->comment_user_id,
252	'commentmeta' => $meta,
253	];
254	}
255
256	$posts[] = $post;
257	}
258
259	return [
260	'authors' => $authors,
261	'posts' => $posts,
262	'categories' => $categories,
263	'tags' => $tags,
264	'terms' => $terms,
265	'base_url' => $base_url,
266	'base_blog_url' => $base_blog_url,
267	'page_on_front' => $page_on_front,
268	'version' => $wxr_version,
269	];
270	}
271
272	/**
273	* @param $file
274	* @param mixed ...$args
275	* @return false\|string
276	*/
277	public function file_get_contents( $file, ...$args ) {
278	if ( ! is_file( $file ) \|\| ! is_readable( $file ) ) {
279	return false;
280	}
281
282	return file_get_contents( $file, ...$args );
283	}
284	}
285