1 | <?php |
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2 | |
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3 | class WP_Import { |
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4 | |
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5 | var $posts = array (); |
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6 | var $posts_processed = array (); |
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7 | // Array of arrays. [[0] => XML fragment, [1] => New post ID] |
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8 | var $file; |
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9 | var $id; |
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10 | var $mtnames = array (); |
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11 | var $newauthornames = array (); |
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12 | var $j = -1; |
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13 | |
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14 | function header() { |
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15 | echo '<div class="wrap">'; |
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16 | echo '<h2>'.__('Import WordPress').'</h2>'; |
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17 | } |
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18 | |
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19 | function footer() { |
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20 | echo '</div>'; |
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21 | } |
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22 | |
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23 | function unhtmlentities($string) { // From php.net for < 4.3 compat |
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24 | $trans_tbl = get_html_translation_table(HTML_ENTITIES); |
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25 | $trans_tbl = array_flip($trans_tbl); |
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26 | return strtr($string, $trans_tbl); |
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27 | } |
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28 | |
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29 | function greet() { |
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30 | echo '<div class="narrow">'; |
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31 | echo '<p>'.__('Howdy! Upload your WordPress eXtended RSS (WXR) file and we’ll import the posts, comments, custom fields, and categories into this blog.').'</p>'; |
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32 | echo '<p>'.__('Choose a WordPress WXR file to upload, then click Upload file and import.').'</p>'; |
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33 | wp_import_upload_form("admin.php?import=wordpress&step=1"); |
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34 | echo '</div>'; |
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35 | } |
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36 | |
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37 | function get_tag( $string, $tag ) { |
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38 | global $wpdb; |
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39 | preg_match("|<$tag.*?>(.*?)</$tag>|is", $string, $return); |
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40 | $return = preg_replace('|^<!\[CDATA\[(.*)\]\]>$|s', '$1', $return[1]); |
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41 | $return = $wpdb->escape( trim( $return ) ); |
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42 | return $return; |
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43 | } |
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44 | |
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45 | function users_form($n) { |
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46 | global $wpdb, $testing; |
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47 | $users = get_users_of_blog($wpdb->blogid); |
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48 | ?><select name="userselect[<?php echo attribute_escape($n); ?>]"> |
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49 | <option value="#NONE#">- Select -</option> |
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50 | <?php |
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51 | foreach ($users as $user) { |
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52 | echo '<option value="'.$user->user_login.'">'.$user->user_login.'</option>'; |
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53 | } |
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54 | ?> |
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55 | </select> |
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56 | <?php |
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57 | } |
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58 | |
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59 | //function to check the authorname and do the mapping |
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60 | function checkauthor($author) { |
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61 | global $wpdb; |
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62 | |
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63 | $map = $_POST['userselect']; |
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64 | |
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65 | $user_id = username_exists($map[$author]); //use that key to get the value of the author's name from $newauthornames |
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66 | |
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67 | return $user_id; |
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68 | } |
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69 | |
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70 | function get_entries() { |
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71 | set_magic_quotes_runtime(0); |
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72 | |
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73 | $this->posts = array(); |
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74 | $this->categories = array(); |
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75 | $this->tags = array(); |
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76 | $num = 0; |
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77 | $doing_entry = false; |
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78 | |
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79 | $fp = fopen($this->file, 'r'); |
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80 | if ($fp) { |
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81 | while ( !feof($fp) ) { |
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82 | $importline = rtrim(fgets($fp)); |
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83 | |
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84 | if ( false !== strpos($importline, '<wp:category>') ) { |
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85 | preg_match('|<wp:category>(.*?)</wp:category>|is', $importline, $category); |
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86 | $this->categories[] = $category[1]; |
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87 | continue; |
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88 | } |
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89 | if ( false !== strpos($importline, '<wp:tag>') ) { |
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90 | preg_match('|<wp:tag>(.*?)</wp:tag>|is', $importline, $tag); |
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91 | $this->tags[] = $tag[1]; |
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92 | continue; |
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93 | } |
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94 | if ( false !== strpos($importline, '<item>') ) { |
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95 | $this->posts[$num] = ''; |
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96 | $doing_entry = true; |
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97 | continue; |
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98 | } |
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99 | if ( false !== strpos($importline, '</item>') ) { |
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100 | $num++; |
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101 | $doing_entry = false; |
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102 | continue; |
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103 | } |
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104 | if ( $doing_entry ) { |
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105 | $this->posts[$num] .= $importline . "\n"; |
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106 | } |
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107 | } |
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108 | |
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109 | foreach ($this->posts as $post) { |
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110 | $post_ID = (int) $this->get_tag( $post, 'wp:post_id' ); |
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111 | if ($post_ID) { |
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112 | $this->posts_processed[$post_ID][0] = &$post; |
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113 | $this->posts_processed[$post_ID][1] = 0; |
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114 | } |
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115 | } |
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116 | |
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117 | fclose($fp); |
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118 | } |
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119 | } |
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120 | |
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121 | function get_wp_authors() { |
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122 | $temp = array (); |
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123 | $i = -1; |
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124 | foreach ($this->posts as $post) { |
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125 | if ('' != trim($post)) { |
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126 | ++ $i; |
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127 | $author = $this->get_tag( $post, 'dc:creator' ); |
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128 | array_push($temp, "$author"); //store the extracted author names in a temporary array |
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129 | } |
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130 | } |
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131 | |
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132 | // 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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133 | $authors[0] = array_shift($temp); |
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134 | $y = count($temp) + 1; |
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135 | for ($x = 1; $x < $y; $x ++) { |
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136 | $next = array_shift($temp); |
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137 | if (!(in_array($next, $authors))) |
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138 | array_push($authors, "$next"); |
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139 | } |
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140 | |
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141 | return $authors; |
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142 | } |
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143 | |
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144 | function get_authors_from_post() { |
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145 | $formnames = array (); |
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146 | $selectnames = array (); |
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147 | |
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148 | foreach ((array)$_POST['user'] as $key => $line) { |
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149 | $newname = trim(stripslashes($line)); |
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150 | if ($newname == '') |
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151 | $newname = 'left_blank'; //passing author names from step 1 to step 2 is accomplished by using POST. left_blank denotes an empty entry in the form. |
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152 | array_push($formnames, "$newname"); |
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153 | } // $formnames is the array with the form entered names |
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154 | |
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155 | foreach ($_POST['userselect'] as $user => $key) { |
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156 | $selected = trim(stripslashes($key)); |
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157 | array_push($selectnames, "$selected"); |
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158 | } |
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159 | |
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160 | $count = count($formnames); |
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161 | for ($i = 0; $i < $count; $i ++) { |
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162 | if ($selectnames[$i] != '#NONE#') { //if no name was selected from the select menu, use the name entered in the form |
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163 | array_push($this->newauthornames, "$selectnames[$i]"); |
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164 | } else { |
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165 | array_push($this->newauthornames, "$formnames[$i]"); |
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166 | } |
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167 | } |
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168 | } |
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169 | |
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170 | function wp_authors_form() { |
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171 | ?> |
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172 | <h2><?php _e('Assign Authors'); ?></h2> |
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173 | <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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174 | <?php |
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175 | |
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176 | |
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177 | $authors = $this->get_wp_authors(); |
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178 | echo '<ol id="authors">'; |
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179 | echo '<form action="?import=wordpress&step=2&id=' . $this->id . '" method="post">'; |
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180 | wp_nonce_field('import-wordpress'); |
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181 | $j = -1; |
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182 | foreach ($authors as $author) { |
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183 | ++ $j; |
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184 | echo '<li>'.__('Current author:').' <strong>'.$author.'</strong><br />'.'Map to existing: '; |
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185 | $this->users_form($author); |
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186 | echo '</li>'; |
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187 | } |
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188 | |
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189 | echo '<input type="submit" value="Submit">'.'<br />'; |
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190 | echo '</form>'; |
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191 | echo '</ol>'; |
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192 | |
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193 | } |
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194 | |
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195 | function select_authors() { |
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196 | $file = wp_import_handle_upload(); |
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197 | if ( isset($file['error']) ) { |
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198 | echo '<p>'.__('Sorry, there has been an error.').'</p>'; |
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199 | echo '<p><strong>' . $file['error'] . '</strong></p>'; |
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200 | return; |
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201 | } |
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202 | $this->file = $file['file']; |
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203 | $this->id = (int) $file['id']; |
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204 | |
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205 | $this->get_entries(); |
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206 | $this->wp_authors_form(); |
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207 | } |
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208 | |
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209 | function process_categories() { |
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210 | global $wpdb; |
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211 | |
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212 | $cat_names = (array) get_terms('category', 'fields=names'); |
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213 | |
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214 | while ( $c = array_shift($this->categories) ) { |
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215 | $cat_name = trim($this->get_tag( $c, 'wp:cat_name' )); |
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216 | |
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217 | // If the category exists we leave it alone |
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218 | if ( in_array($cat_name, $cat_names) ) |
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219 | continue; |
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220 | |
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221 | $category_nicename = $this->get_tag( $c, 'wp:category_nicename' ); |
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222 | $posts_private = (int) $this->get_tag( $c, 'wp:posts_private' ); |
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223 | $links_private = (int) $this->get_tag( $c, 'wp:links_private' ); |
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224 | |
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225 | $parent = $this->get_tag( $c, 'wp:category_parent' ); |
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226 | |
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227 | if ( empty($parent) ) |
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228 | $category_parent = '0'; |
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229 | else |
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230 | $category_parent = category_exists($parent); |
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231 | |
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232 | $catarr = compact('category_nicename', 'category_parent', 'posts_private', 'links_private', 'posts_private', 'cat_name'); |
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233 | |
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234 | $cat_ID = wp_insert_category($catarr); |
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235 | } |
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236 | } |
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237 | |
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238 | function process_tags() { |
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239 | global $wpdb; |
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240 | |
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241 | $tag_names = (array) get_terms('post_tag', 'fields=names'); |
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242 | |
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243 | while ( $c = array_shift($this->tags) ) { |
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244 | $tag_name = trim($this->get_tag( $c, 'wp:tag_name' )); |
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245 | |
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246 | // If the category exists we leave it alone |
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247 | if ( in_array($tag_name, $tag_names) ) |
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248 | continue; |
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249 | |
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250 | $slug = $this->get_tag( $c, 'wp:tag_slug' ); |
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251 | $description = $this->get_tag( $c, 'wp:tag_description' ); |
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252 | |
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253 | $tagarr = compact('slug', 'description'); |
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254 | |
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255 | $tag_ID = wp_insert_term($tag_name, 'post_tag', $tagarr); |
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256 | } |
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257 | } |
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258 | |
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259 | function process_posts() { |
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260 | $i = -1; |
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261 | echo '<ol>'; |
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262 | |
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263 | foreach ($this->posts as $post) { |
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264 | $result = $this->process_post($post); |
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265 | if ( is_wp_error( $result ) ) |
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266 | return $result; |
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267 | } |
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268 | |
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269 | echo '</ol>'; |
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270 | |
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271 | wp_import_cleanup($this->id); |
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272 | |
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273 | echo '<h3>'.sprintf(__('All done.').' <a href="%s">'.__('Have fun!').'</a>', get_option('home')).'</h3>'; |
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274 | } |
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275 | |
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276 | function process_post($post) { |
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277 | global $wpdb; |
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278 | |
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279 | $post_ID = (int) $this->get_tag( $post, 'wp:post_id' ); |
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280 | if ( $post_ID && !empty($this->posts_processed[$post_ID][1]) ) // Processed already |
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281 | return 0; |
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282 | |
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283 | // There are only ever one of these |
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284 | $post_title = $this->get_tag( $post, 'title' ); |
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285 | $post_date = $this->get_tag( $post, 'wp:post_date' ); |
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286 | $post_date_gmt = $this->get_tag( $post, 'wp:post_date_gmt' ); |
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287 | $comment_status = $this->get_tag( $post, 'wp:comment_status' ); |
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288 | $ping_status = $this->get_tag( $post, 'wp:ping_status' ); |
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289 | $post_status = $this->get_tag( $post, 'wp:status' ); |
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290 | $post_name = $this->get_tag( $post, 'wp:post_name' ); |
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291 | $post_parent = $this->get_tag( $post, 'wp:post_parent' ); |
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292 | $menu_order = $this->get_tag( $post, 'wp:menu_order' ); |
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293 | $post_type = $this->get_tag( $post, 'wp:post_type' ); |
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294 | $guid = $this->get_tag( $post, 'guid' ); |
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295 | $post_author = $this->get_tag( $post, 'dc:creator' ); |
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296 | |
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297 | $post_content = $this->get_tag( $post, 'content:encoded' ); |
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298 | $post_content = preg_replace('|<(/?[A-Z]+)|e', "'<' . strtolower('$1')", $post_content); |
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299 | $post_content = str_replace('<br>', '<br />', $post_content); |
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300 | $post_content = str_replace('<hr>', '<hr />', $post_content); |
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301 | |
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302 | preg_match_all('|<category domain="tag">(.*?)</category>|is', $post, $tags); |
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303 | $tags = $tags[1]; |
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304 | |
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305 | $tag_index = 0; |
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306 | foreach ($tags as $tag) { |
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307 | $tags[$tag_index] = $wpdb->escape($this->unhtmlentities(str_replace(array ('<![CDATA[', ']]>'), '', $tag))); |
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308 | $tag_index++; |
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309 | } |
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310 | |
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311 | preg_match_all('|<category>(.*?)</category>|is', $post, $categories); |
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312 | $categories = $categories[1]; |
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313 | |
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314 | $cat_index = 0; |
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315 | foreach ($categories as $category) { |
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316 | $categories[$cat_index] = $wpdb->escape($this->unhtmlentities(str_replace(array ('<![CDATA[', ']]>'), '', $category))); |
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317 | $cat_index++; |
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318 | } |
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319 | |
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320 | if ($post_id = post_exists($post_name, '', $post_date)) { |
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321 | echo '<li>'; |
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322 | printf(__('Post <i>%s</i> already exists.'), stripslashes($post_title)); |
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323 | } else { |
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324 | |
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325 | // If it has parent, process parent first. |
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326 | $post_parent = (int) $post_parent; |
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327 | if ($parent = $this->posts_processed[$post_parent]) { |
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328 | if (!$parent[1]) { |
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329 | $result = $this->process_post($parent[0]); // If not yet, process the parent first. |
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330 | if ( is_wp_error( $result ) ) |
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331 | return $result; |
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332 | } |
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333 | $post_parent = $parent[1]; // New ID of the parent; |
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334 | } |
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335 | |
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336 | echo '<li>'; |
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337 | printf(__('Importing post <i>%s</i>...'), stripslashes($post_title)); |
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338 | |
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339 | $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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340 | |
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341 | $postdata = compact('post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_title', 'post_excerpt', 'post_status', 'post_name', 'comment_status', 'ping_status', 'post_modified', 'post_modified_gmt', 'guid', 'post_parent', 'menu_order', 'post_type'); |
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342 | $comment_post_ID = $post_id = wp_insert_post($postdata); |
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343 | if ( is_wp_error( $post_id ) ) |
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344 | return $post_id; |
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345 | |
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346 | // Memorize old and new ID. |
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347 | if ( $post_id && $post_ID && $this->posts_processed[$post_ID] ) |
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348 | $this->posts_processed[$post_ID][1] = $post_id; // New ID. |
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349 | |
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350 | // Add categories. |
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351 | if (count($categories) > 0) { |
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352 | $post_cats = array(); |
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353 | foreach ($categories as $category) { |
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354 | $slug = sanitize_term_field('slug', $category, 0, 'category', 'db'); |
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355 | $cat = get_term_by('slug', $slug, 'category'); |
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356 | $cat_ID = 0; |
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357 | if ( ! empty($cat) ) |
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358 | $cat_ID = $cat->term_id; |
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359 | if ($cat_ID == 0) { |
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360 | $category = $wpdb->escape($category); |
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361 | $cat_ID = wp_insert_category(array('cat_name' => $category)); |
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362 | } |
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363 | $post_cats[] = $cat_ID; |
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364 | } |
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365 | wp_set_post_categories($post_id, $post_cats); |
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366 | } |
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367 | |
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368 | // Add tags. |
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369 | if (count($tags) > 0) { |
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370 | $post_tags = array(); |
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371 | foreach ($tags as $tag) { |
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372 | $slug = sanitize_term_field('slug', $tag, 0, 'post_tag', 'db'); |
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373 | $tag_obj = get_term_by('slug', $slug, 'post_tag'); |
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374 | $tag_id = 0; |
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375 | if ( ! empty($tag_obj) ) |
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376 | $tag_id = $tag_obj->term_id; |
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377 | if ( $tag_id == 0 ) { |
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378 | $tag = $wpdb->escape($tag); |
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379 | $tag_id = wp_insert_term($tag, 'post_tag'); |
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380 | $tag_id = $tag_id['term_id']; |
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381 | } |
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382 | $post_tags[] = intval( $tag_id ); |
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383 | } |
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384 | wp_set_post_tags($post_id, $post_tags); |
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385 | } |
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386 | } |
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387 | |
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388 | // Now for comments |
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389 | preg_match_all('|<wp:comment>(.*?)</wp:comment>|is', $post, $comments); |
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390 | $comments = $comments[1]; |
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391 | $num_comments = 0; |
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392 | if ( $comments) { foreach ($comments as $comment) { |
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393 | $comment_author = $this->get_tag( $comment, 'wp:comment_author'); |
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394 | $comment_author_email = $this->get_tag( $comment, 'wp:comment_author_email'); |
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395 | $comment_author_IP = $this->get_tag( $comment, 'wp:comment_author_IP'); |
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396 | $comment_author_url = $this->get_tag( $comment, 'wp:comment_author_url'); |
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397 | $comment_date = $this->get_tag( $comment, 'wp:comment_date'); |
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398 | $comment_date_gmt = $this->get_tag( $comment, 'wp:comment_date_gmt'); |
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399 | $comment_content = $this->get_tag( $comment, 'wp:comment_content'); |
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400 | $comment_approved = $this->get_tag( $comment, 'wp:comment_approved'); |
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401 | $comment_type = $this->get_tag( $comment, 'wp:comment_type'); |
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402 | $comment_parent = $this->get_tag( $comment, 'wp:comment_parent'); |
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403 | |
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404 | if ( !comment_exists($comment_author, $comment_date) ) { |
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405 | $commentdata = compact('comment_post_ID', 'comment_author', 'comment_author_url', 'comment_author_email', 'comment_author_IP', 'comment_date', 'comment_date_gmt', 'comment_content', 'comment_approved', 'comment_type', 'comment_parent'); |
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406 | wp_insert_comment($commentdata); |
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407 | $num_comments++; |
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408 | } |
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409 | } } |
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410 | |
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411 | if ( $num_comments ) |
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412 | printf(' '.__('(%s comments)'), $num_comments); |
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413 | |
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414 | // Now for post meta |
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415 | preg_match_all('|<wp:postmeta>(.*?)</wp:postmeta>|is', $post, $postmeta); |
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416 | $postmeta = $postmeta[1]; |
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417 | if ( $postmeta) { foreach ($postmeta as $p) { |
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418 | $key = $this->get_tag( $p, 'wp:meta_key' ); |
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419 | $value = $this->get_tag( $p, 'wp:meta_value' ); |
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420 | $value = stripslashes($value); // add_post_meta() will escape. |
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421 | add_post_meta( $post_id, $key, $value ); |
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422 | } } |
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423 | } |
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424 | |
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425 | function import() { |
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426 | $this->id = (int) $_GET['id']; |
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427 | |
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428 | $this->file = get_attached_file($this->id); |
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429 | $this->get_authors_from_post(); |
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430 | $this->get_entries(); |
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431 | $this->process_categories(); |
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432 | $this->process_tags(); |
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433 | $result = $this->process_posts(); |
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434 | if ( is_wp_error( $result ) ) |
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435 | return $result; |
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436 | } |
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437 | |
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438 | function dispatch() { |
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439 | if (empty ($_GET['step'])) |
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440 | $step = 0; |
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441 | else |
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442 | $step = (int) $_GET['step']; |
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443 | |
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444 | $this->header(); |
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445 | switch ($step) { |
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446 | case 0 : |
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447 | $this->greet(); |
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448 | break; |
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449 | case 1 : |
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450 | check_admin_referer('import-upload'); |
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451 | $this->select_authors(); |
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452 | break; |
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453 | case 2: |
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454 | check_admin_referer('import-wordpress'); |
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455 | $result = $this->import(); |
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456 | if ( is_wp_error( $result ) ) |
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457 | echo $result->get_error_message(); |
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458 | break; |
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459 | } |
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460 | $this->footer(); |
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461 | } |
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462 | |
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463 | function WP_Import() { |
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464 | // Nothing. |
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465 | } |
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466 | } |
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467 | |
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468 | $wp_import = new WP_Import(); |
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469 | |
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470 | register_importer('wordpress', 'WordPress', __('Import <strong>posts, comments, custom fields, pages, and categories</strong> from a WordPress export file'), array ($wp_import, 'dispatch')); |
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471 | |
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472 | ?> |
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