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<title>[2132] 2013/frederickding/importer/trunk/class-wordpress-importer.php: Start separating importer tasks to a subclass of WP_Importer_Cron; see #327</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://gsoc.trac.wordpress.org/changeset/2132">2132</a></dd>
<dt>Author</dt> <dd>frederick.ding</dd>
<dt>Date</dt> <dd>2013-07-17 21:58:02 +0000 (Wed, 17 Jul 2013)</dd>
</dl>
<h3>Log Message</h3>
<pre>Start separating importer tasks to a subclass of WP_Importer_Cron; see <a href="http://gsoc.trac.wordpress.org/ticket/327">#327</a>
- Much is still TODO
- Method visibility defined as protected for process tasks
- Omitting anything that produces output directly; see <a href="http://gsoc.trac.wordpress.org/ticket/331">#331</a></pre>
<h3>Added Paths</h3>
<ul>
<li><a href="#2013frederickdingimportertrunkclasswordpressimporterphp">2013/frederickding/importer/trunk/class-wordpress-importer.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="2013frederickdingimportertrunkclasswordpressimporterphp"></a>
<div class="addfile"><h4>Added: 2013/frederickding/importer/trunk/class-wordpress-importer.php (0 => 2132)</h4>
<pre class="diff"><span>
<span class="info">--- 2013/frederickding/importer/trunk/class-wordpress-importer.php (rev 0)
+++ 2013/frederickding/importer/trunk/class-wordpress-importer.php 2013-07-17 21:58:02 UTC (rev 2132)
</span><span class="lines">@@ -0,0 +1,209 @@
</span><ins>+<?php
+
+class WordPress_Importer extends WP_Importer_Cron {
+
+ /**
+ * Highest supported WXR version.
+ *
+ * @var float
+ */
+ const MAX_WXR_VERSION = 1.2;
+
+ /**
+ * Attachment ID of the WXR file.
+ *
+ * @var int
+ */
+ protected $id;
+
+ protected $error = null;
+
+ protected $progress = array();
+
+ protected $wxr_file;
+
+ /**
+ * Parses the WXR file and prepares us for the task of processing parsed
+ * data
+ *
+ * @todo port functionality from WP_Import::import_start()
+ *
+ * @param string $file
+ * Path to the WXR file for parsing
+ */
+ public function do_parse( $file ) {
+ $parser = new WXR_Parser();
+ return $parser->parse( $file );
+ }
+
+ /**
+ * The main controller for the actual import stage. Modelled on
+ * Tumblr_Import::do_blog_import().
+ *
+ * @param string $file
+ * Path to the WXR file for importing
+ * @return boolean Whether the import process is complete
+ */
+ public function do_import( $file ) {
+ // defaults to being done
+ $done = true;
+
+ $this->error = null;
+ if ( ! empty( $this->progress[$file] ) ) {
+ $done = false;
+
+ do {
+ switch ( $this->progress[$file] ) {
+ case 'start':
+ case 'authors':
+ $this->process_author_mappings();
+ break;
+ case 'categories':
+ $this->process_categories();
+ break;
+ case 'tags':
+ $this->process_tags();
+ break;
+ case 'terms':
+ $this->process_terms();
+ break;
+ case 'attachments':
+ $this->process_attachments();
+ break;
+ case 'posts':
+ $this->process_posts();
+ break;
+ case 'backfill_parents':
+ $this->process_parents();
+ break;
+ case 'backfill_urls':
+ $this->process_urls();
+ break;
+ case 'finish':
+ default:
+ $done = true;
+ }
+ $this->save_vars();
+ } while ( empty( $this->error ) && ! $done && $this->have_time() );
+ }
+ return $done;
+ }
+
+ /**
+ * Performs post-import cleanup of files and the cache
+ */
+ public function do_cleanup() {
+ wp_import_cleanup( $this->id );
+
+ wp_cache_flush();
+ foreach ( get_taxonomies() as $tax ) {
+ delete_option( "{$tax}_children" );
+ _get_term_hierarchy( $tax );
+ }
+
+ wp_defer_term_counting( false );
+ wp_defer_comment_counting( false );
+
+ // do_action('import_end') omitted because that action seems to be
+ // designed for callbacks that could sent output
+ }
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_author_mappings() {}
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_categories() {}
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_tags() {}
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_terms() {}
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_attachments() {}
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_posts() {}
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_parents() {}
+
+ /**
+ *
+ * @todo
+ */
+ protected function process_urls() {}
+
+ /**
+ * Decide if the given meta key maps to information we will want to import
+ *
+ * @param string $key The meta key to check
+ * @return string|bool The key if we do want to import, false if not
+ */
+ public function is_valid_meta_key( $key ) {
+ // skip attachment metadata since we'll regenerate it from scratch
+ // skip _edit_lock as not relevant for import
+ if ( in_array( $key,
+ array(
+ '_wp_attached_file',
+ '_wp_attachment_metadata',
+ '_edit_lock'
+ ) ) )
+ return false;
+ return $key;
+ }
+
+ /**
+ * Decide whether or not the importer is allowed to create users.
+ * Default is true, can be filtered via import_allow_create_users
+ *
+ * @return bool True if creating users is allowed
+ */
+ public function is_allowed_user_creation() {
+ return apply_filters( 'import_allow_create_users', true );
+ }
+
+ /**
+ * Decide whether or not the importer should attempt to download attachment
+ * files. Default is true, can be filtered via
+ * import_allow_fetch_attachments. The choice made at the import options
+ * screen must also be true, false here hides that checkbox.
+ *
+ * @return bool True if downloading attachments is allowed
+ */
+ public function is_allowed_attachment_fetch() {
+ return apply_filters( 'import_allow_fetch_attachments', true );
+ }
+
+ /**
+ * Decide what the maximum file size for downloaded attachments is. Default
+ * is 0 (unlimited), can be filtered via import_attachment_size_limit.
+ *
+ * @return int Maximum attachment file size to import
+ */
+ public function get_max_attachment_size() {
+ return apply_filters( 'import_attachment_size_limit', 0 );
+ }
+}
</ins><span class="cx">\ No newline at end of file
</span></span></pre>
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