diff options
Diffstat (limited to 'maintenance/renameDbPrefix.php')
-rw-r--r-- | maintenance/renameDbPrefix.php | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/maintenance/renameDbPrefix.php b/maintenance/renameDbPrefix.php new file mode 100644 index 00000000..17568b4a --- /dev/null +++ b/maintenance/renameDbPrefix.php @@ -0,0 +1,68 @@ +<?php +/** + * Run this script to after changing $wgDBPrefix on a wiki. + * The wiki will have to get downtime to do this correctly. + * + * @file + * @ingroup Maintenance + */ +$optionsWithArgs = array('old','new','help'); + +require_once( 'commandLine.inc' ); + +if( @$options['help'] || !isset($options['old']) || !isset($options['new']) ) { + print "usage:updateSpecialPages.php [--help] [--old x] [new y]\n"; + print " --help : this help message\n"; + print " --old x : old db prefix x\n"; + print " --old 0 : EMPTY old db prefix x\n"; + print " --new y : new db prefix y\n"; + print " --new 0 : EMPTY new db prefix\n"; + wfDie(); +} + +// Allow for no old prefix +if( $options['old'] === '0' ) { + $old = ''; +} else { + // Use nice safe, sane, prefixes + preg_match( '/^[a-zA-Z]+_$/', $options['old'], $m ); + $old = isset($m[0]) ? $m[0] : false; +} +// Allow for no new prefix +if( $options['new'] === '0' ) { + $new = ''; +} else { + // Use nice safe, sane, prefixes + preg_match( '/^[a-zA-Z]+_$/', $options['new'], $m ); + $new = isset($m[0]) ? $m[0] : false; +} + +if( $old===false || $new===false ) { + print "Invalid prefix!\n"; + wfDie(); +} +if( $old === $new ) { + print "Same prefix. Nothing to rename!\n"; + wfDie(); +} + +print "Renaming DB prefix for tables of $wgDBname from '$old' to '$new'\n"; +$count = 0; + +$dbw = wfGetDB( DB_MASTER ); +$res = $dbw->query( "SHOW TABLES LIKE '".$dbw->escapeLike($old)."%'" ); +foreach( $res as $row ) { + // XXX: odd syntax. MySQL outputs an oddly cased "Tables of X" + // sort of message. Best not to try $row->x stuff... + $fields = get_object_vars( $row ); + // Silly for loop over one field... + foreach( $fields as $resName => $table ) { + // $old should be regexp safe ([a-zA-Z_]) + $newTable = preg_replace( '/^'.$old.'/',$new,$table); + print "Renaming table $table to $newTable\n"; + $dbw->query( "RENAME TABLE $table TO $newTable" ); + } + $count++; +} +print "Done! [$count tables]\n"; + |