312 lines
11 KiB
PHP
312 lines
11 KiB
PHP
<?php
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class WP_Import {
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var $posts = array ();
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var $file;
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var $id;
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var $mtnames = array ();
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var $newauthornames = array ();
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var $j = -1;
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function header() {
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echo '<div class="wrap">';
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echo '<h2>'.__('Import WordPress').'</h2>';
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}
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function footer() {
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echo '</div>';
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}
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function unhtmlentities($string) { // From php.net for < 4.3 compat
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$trans_tbl = get_html_translation_table(HTML_ENTITIES);
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$trans_tbl = array_flip($trans_tbl);
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return strtr($string, $trans_tbl);
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}
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function greet() {
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echo '<p>'.__('Howdy! Upload your WordPress eXtended RSS (WXR) file and we’ll import the posts and comments into this blog.').'</p>';
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wp_import_upload_form("admin.php?import=wordpress&step=1");
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}
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function get_tag( $string, $tag ) {
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preg_match("|<$tag.*?>(.*?)</$tag>|is", $string, $return);
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$return = addslashes( trim( $return[1] ) );
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return $return;
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}
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function users_form($n) {
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global $wpdb, $testing;
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$users = $wpdb->get_results("SELECT * FROM $wpdb->users ORDER BY ID");
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?><select name="userselect[<?php echo $n; ?>]">
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<option value="#NONE#">- Select -</option>
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<?php
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foreach ($users as $user) {
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echo '<option value="'.$user->user_login.'">'.$user->user_login.'</option>';
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}
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?>
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</select>
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<?php
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}
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//function to check the authorname and do the mapping
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function checkauthor($author) {
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global $wpdb;
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//mtnames is an array with the names in the mt import file
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$pass = 'changeme';
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if (!(in_array($author, $this->mtnames))) { //a new mt author name is found
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++ $this->j;
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$this->mtnames[$this->j] = $author; //add that new mt author name to an array
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$user_id = username_exists($this->newauthornames[$this->j]); //check if the new author name defined by the user is a pre-existing wp user
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if (!$user_id) { //banging my head against the desk now.
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if ($newauthornames[$this->j] == 'left_blank') { //check if the user does not want to change the authorname
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$user_id = wp_create_user($author, $pass);
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$this->newauthornames[$this->j] = $author; //now we have a name, in the place of left_blank.
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} else {
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$user_id = wp_create_user($this->newauthornames[$this->j], $pass);
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}
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} else {
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return $user_id; // return pre-existing wp username if it exists
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}
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} else {
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$key = array_search($author, $this->mtnames); //find the array key for $author in the $mtnames array
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$user_id = username_exists($this->newauthornames[$key]); //use that key to get the value of the author's name from $newauthornames
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}
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return $user_id;
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}
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function get_entries() {
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set_magic_quotes_runtime(0);
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$importdata = file($this->file); // Read the file into an array
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$importdata = implode('', $importdata); // squish it
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$importdata = preg_replace("/(\r\n|\n|\r)/", "\n", $importdata);
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preg_match_all('|<item>(.*?)</item>|is', $importdata, $this->posts);
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$this->posts = $this->posts[1];
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}
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function get_wp_authors() {
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$temp = array ();
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$i = -1;
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foreach ($this->posts as $post) {
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if ('' != trim($post)) {
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++ $i;
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$author = $this->get_tag( $post, 'dc:creator' );
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array_push($temp, "$author"); //store the extracted author names in a temporary array
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}
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}
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// We need to find unique values of author names, while preserving the order, so this function emulates the unique_value(); php function, without the sorting.
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$authors[0] = array_shift($temp);
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$y = count($temp) + 1;
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for ($x = 1; $x < $y; $x ++) {
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$next = array_shift($temp);
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if (!(in_array($next, $authors)))
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array_push($authors, "$next");
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}
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return $authors;
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}
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function get_authors_from_post() {
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$formnames = array ();
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$selectnames = array ();
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foreach ($_POST['user'] as $key => $line) {
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$newname = trim(stripslashes($line));
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if ($newname == '')
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$newname = 'left_blank'; //passing author names from step 1 to step 2 is accomplished by using POST. left_blank denotes an empty entry in the form.
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array_push($formnames, "$newname");
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} // $formnames is the array with the form entered names
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foreach ($_POST['userselect'] as $user => $key) {
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$selected = trim(stripslashes($key));
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array_push($selectnames, "$selected");
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}
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$count = count($formnames);
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for ($i = 0; $i < $count; $i ++) {
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if ($selectnames[$i] != '#NONE#') { //if no name was selected from the select menu, use the name entered in the form
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array_push($this->newauthornames, "$selectnames[$i]");
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} else {
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array_push($this->newauthornames, "$formnames[$i]");
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}
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}
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}
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function wp_authors_form() {
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?>
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<h2><?php _e('Assign Authors'); ?></h2>
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<p><?php _e('To make it easier for you to edit and save the imported posts and drafts, you may want to change the name of the author of the posts. For example, you may want to import all the entries as <code>admin</code>s entries.'); ?></p>
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<p><?php _e('If a new user is created by WordPress, the password will be set, by default, to "changeme". Quite suggestive, eh? ;)'); ?></p>
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<?php
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$authors = $this->get_wp_authors();
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echo '<ol id="authors">';
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echo '<form action="?import=wordpress&step=2&id=' . $this->id . '" method="post">';
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$j = -1;
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foreach ($authors as $author) {
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++ $j;
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echo '<li>'.__('Current author:').' <strong>'.$author.'</strong><br />'.sprintf(__('Create user %1$s or map to existing'), ' <input type="text" value="'.$author.'" name="'.'user[]'.'" maxlength="30"> <br />');
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$this->users_form($j);
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echo '</li>';
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}
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echo '<input type="submit" value="Submit">'.'<br/>';
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echo '</form>';
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echo '</ol>';
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}
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function select_authors() {
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$file = wp_import_handle_upload();
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if ( isset($file['error']) ) {
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$this->header();
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echo '<p>'.__('Sorry, there has been an error.').'</p>';
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echo '<p><strong>' . $file['error'] . '</strong></p>';
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$this->footer();
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return;
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}
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$this->file = $file['file'];
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$this->id = $file['id'];
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$this->get_entries();
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$this->wp_authors_form();
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}
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function process_posts() {
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global $wpdb;
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$i = -1;
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echo '<ol>';
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foreach ($this->posts as $post) {
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// There are only ever one of these
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$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( $post, 'wp:ping_status' );
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$post_status = $this->get_tag( $post, 'wp:status' );
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$post_parent = $this->get_tag( $post, 'wp:post_parent' );
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$post_type = $this->get_tag( $post, 'wp:post_type' );
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$guid = $this->get_tag( $post, 'guid' );
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$post_author = $this->get_tag( $post, 'dc:creator' );
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$post_content = $this->get_tag( $post, 'content:encoded' );
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$post_content = str_replace(array ('<![CDATA[', ']]>'), '', $post_content);
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$post_content = preg_replace('|<(/?[A-Z]+)|e', "'<' . strtolower('$1')", $post_content);
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$post_content = str_replace('<br>', '<br />', $post_content);
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$post_content = str_replace('<hr>', '<hr />', $post_content);
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preg_match_all('|<category>(.*?)</category>|is', $post, $categories);
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$categories = $categories[1];
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$cat_index = 0;
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foreach ($categories as $category) {
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$categories[$cat_index] = $wpdb->escape($this->unhtmlentities($category));
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$cat_index++;
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}
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if ($post_id = post_exists($post_title, '', $post_date)) {
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echo '<li>';
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printf(__('Post <i>%s</i> already exists.'), stripslashes($post_title));
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} else {
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echo '<li>';
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printf(__('Importing post <i>%s</i>...'), stripslashes($post_title));
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$post_author = $this->checkauthor($post_author); //just so that if a post already exists, new users are not created by checkauthor
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$postdata = compact('post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_excerpt', 'post_status', 'comment_status', 'ping_status', 'post_modified', 'post_modified_gmt', 'guid', 'post_parent', 'post_type');
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$comment_post_ID = $post_id = wp_insert_post($postdata);
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// Add categories.
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if (0 != count($categories)) {
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wp_create_categories($categories, $post_id);
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}
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}
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// Now for comments
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preg_match_all('|<wp:comment>(.*?)</wp:comment>|is', $post, $comments);
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$comments = $comments[1];
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$num_comments = 0;
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if ( $comments) { foreach ($comments as $comment) {
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$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( $comment, 'wp:comment_parent');
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if ( !comment_exists($comment_author, $comment_date) ) {
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$commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_url', 'comment_author_email', 'comment_author_IP', 'comment_date', 'comment_date_gmt', 'comment_content', 'comment_approved', 'comment_type', 'comment_parent');
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wp_insert_comment($commentdata);
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$num_comments++;
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}
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} }
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if ( $num_comments )
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printf(' '.__('(%s comments)'), $num_comments);
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// Now for post meta
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preg_match_all('|<wp:postmeta>(.*?)</wp:postmeta>|is', $post, $postmeta);
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$postmeta = $postmeta[1];
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if ( $postmeta) { foreach ($postmeta as $p) {
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$key = $this->get_tag( $p, 'wp:meta_key' );
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$value = $this->get_tag( $p, 'wp:meta_value' );
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add_post_meta( $post_id, $key, $value );
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} }
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$index++;
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}
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echo '</ol>';
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wp_import_cleanup($this->id);
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echo '<h3>'.sprintf(__('All done.').' <a href="%s">'.__('Have fun!').'</a>', get_option('home')).'</h3>';
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}
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function import() {
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$this->id = (int) $_GET['id'];
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$this->file = get_attached_file($this->id);
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$this->get_authors_from_post();
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$this->get_entries();
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$this->process_posts();
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}
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function dispatch() {
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if (empty ($_GET['step']))
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$step = 0;
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else
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$step = (int) $_GET['step'];
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$this->header();
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switch ($step) {
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case 0 :
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$this->greet();
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break;
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case 1 :
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$this->select_authors();
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break;
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case 2:
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$this->import();
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break;
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}
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$this->footer();
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}
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function WP_Import() {
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// Nothing.
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}
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}
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$wp_import = new WP_Import();
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register_importer('wordpress', 'WordPress', __('Import posts from a WordPress export file'), array ($wp_import, 'dispatch'));
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?>
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