handle naming checkpoint file with first/last pageID when the file is empty

diff --git a/maintenance/dumpTextPass.php b/maintenance/dumpTextPass.php
index 9ca6d74..92e049f 100644 (file)
--- a/maintenance/dumpTextPass.php
+++ b/maintenance/dumpTextPass.php
@@ -286,8 +286,19 @@ class TextPassDumper extends BackupDumper {
                        // we wrote some stuff after last checkpoint that needs renamed
                        if (file_exists($filenameList[0])) {
                                $newFilenames = array();
-                               $firstPageID = str_pad($this->firstPageWritten,9,"0",STR_PAD_LEFT);
-                               $lastPageID = str_pad($this->lastPageWritten,9,"0",STR_PAD_LEFT);
+                               # we might have just written the header and footer and had no 
+                               # pages or revisions written... perhaps they were all deleted
+                               # there's no pageID 0 so we use that. the caller is responsible
+                               # for deciding what to do with a file containing only the
+                               # siteinfo information and the mw tags.
+                               if (! $this->firstPageWritten) {
+                                       $firstPageID = str_pad(0,9,"0",STR_PAD_LEFT);
+                                       $lastPageID = str_pad(0,9,"0",STR_PAD_LEFT);
+                               }
+                               else {
+                                       $firstPageID = str_pad($this->firstPageWritten,9,"0",STR_PAD_LEFT);
+                                       $lastPageID = str_pad($this->lastPageWritten,9,"0",STR_PAD_LEFT);
+                               }
                                for ( $i = 0; $i < count( $filenameList ); $i++ ) {
                                        $checkpointNameFilledIn = sprintf( $this->checkpointFiles[$i], $firstPageID, $lastPageID );
                                        $fileinfo = pathinfo($filenameList[$i]);