Revert "merged master"

[lhc/web/wiklou.git] / maintenance / fetchText.php

diff --git a/maintenance/fetchText.php b/maintenance/fetchText.php
index 6492fad..2833081 100644 (file)
--- a/maintenance/fetchText.php
+++ b/maintenance/fetchText.php
@@ -1,37 +1,91 @@
 <?php
-
 /**
- * Communications protocol...
+ * Communications protocol.
+ * This is used by dumpTextPass.php when the --spawn option is present.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Maintenance
  */
 
-require "commandLine.inc";
-
-$db = wfGetDB( DB_SLAVE );
-$stdin = fopen( "php://stdin", "rt" );
-while( !feof( $stdin ) ) {
-       $line = fgets( $stdin );
-       if( $line === false ) {
-               // We appear to have lost contact...
-               break;
-       }
-       $textId = intval( $line );
-       $text = doGetText( $db, $textId );
-       echo strlen( $text ) . "\n";
-       echo $text;
-}
+require_once( dirname( __FILE__ ) . '/Maintenance.php' );
 
 /**
- * May throw a database error if, say, the server dies during query.
+ * Maintenance script used to fetch page text in a subprocess.
+ *
+ * @ingroup Maintenance
  */
-function doGetText( $db, $id ) {
-       $id = intval( $id );
-       $row = $db->selectRow( 'text',
-               array( 'old_text', 'old_flags' ),
-               array( 'old_id' => $id ),
-               'TextPassDumper::getText' );
-       $text = Revision::getRevisionText( $row );
-       if( $text === false ) {
-               return false;
+class FetchText extends Maintenance {
+       public function __construct() {
+               parent::__construct();
+               $this->mDescription = "Fetch the revision text from an old_id";
+       }
+
+       /**
+        * returns a string containing the following in order:
+        *       textid
+        *       \n
+        *       length of text (-1 on error = failure to retrieve/unserialize/gunzip/etc)
+        *       \n
+        *       text  (may be empty)
+        *
+        * note that that the text string itself is *not* followed by newline
+        */
+        public function execute() {
+               $db = wfGetDB( DB_SLAVE );
+               $stdin = $this->getStdin();
+               while ( !feof( $stdin ) ) {
+                       $line = fgets( $stdin );
+                       if ( $line === false ) {
+                               // We appear to have lost contact...
+                               break;
+                       }
+                       $textId = intval( $line );
+                       $text = $this->doGetText( $db, $textId );
+                       if ($text === false) {
+                               # actual error, not zero-length text
+                               $textLen = "-1";
+                       }
+                       else {
+                               $textLen = strlen($text);
+                       }
+                       $this->output( $textId . "\n" . $textLen . "\n" . $text );
+               }
+       }
+
+       /**
+        * May throw a database error if, say, the server dies during query.
+        * @param $db DatabaseBase object
+        * @param $id int The old_id
+        * @return String
+        */
+       private function doGetText( $db, $id ) {
+               $id = intval( $id );
+               $row = $db->selectRow( 'text',
+                       array( 'old_text', 'old_flags' ),
+                       array( 'old_id' => $id ),
+                       __METHOD__ );
+               $text = Revision::getRevisionText( $row );
+               if ( $text === false ) {
+                       return false;
+               }
+               return $text;
        }
-       return $text;
 }
+
+$maintClass = "FetchText";
+require_once( RUN_MAINTENANCE_IF_MAIN );