MediaWiki  1.23.2
dumpRev.php
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1 <?php
24 require_once __DIR__ . '/../Maintenance.php';
25 
32 class DumpRev extends Maintenance {
33  public function __construct() {
34  parent::__construct();
35  $this->addArg( 'rev-id', 'Revision ID', true );
36  }
37 
38  public function execute() {
39  $dbr = wfGetDB( DB_SLAVE );
40  $row = $dbr->selectRow(
41  array( 'text', 'revision' ),
42  array( 'old_flags', 'old_text' ),
43  array( 'old_id=rev_text_id', 'rev_id' => $this->getArg() )
44  );
45  if ( !$row ) {
46  $this->error( "Row not found", true );
47  }
48 
49  $flags = explode( ',', $row->old_flags );
50  $text = $row->old_text;
51  if ( in_array( 'external', $flags ) ) {
52  $this->output( "External $text\n" );
53  if ( preg_match( '!^DB://(\w+)/(\w+)/(\w+)$!', $text, $m ) ) {
54  $es = ExternalStore::getStoreObject( 'DB' );
55  $blob = $es->fetchBlob( $m[1], $m[2], $m[3] );
56  if ( strtolower( get_class( $blob ) ) == 'concatenatedgziphistoryblob' ) {
57  $this->output( "Found external CGZ\n" );
58  $blob->uncompress();
59  $this->output( "Items: (" . implode( ', ', array_keys( $blob->mItems ) ) . ")\n" );
60  $text = $blob->getItem( $m[3] );
61  } else {
62  $this->output( "CGZ expected at $text, got " . gettype( $blob ) . "\n" );
63  $text = $blob;
64  }
65  } else {
66  $this->output( "External plain $text\n" );
67  $text = ExternalStore::fetchFromURL( $text );
68  }
69  }
70  if ( in_array( 'gzip', $flags ) ) {
71  $text = gzinflate( $text );
72  }
73  if ( in_array( 'object', $flags ) ) {
74  $obj = unserialize( $text );
75  $text = $obj->getText();
76  }
77 
78  if ( is_object( $text ) ) {
79  $this->error( "Unexpectedly got object of type: " . get_class( $text ) );
80  } else {
81  $this->output( "Text length: " . strlen( $text ) . "\n" );
82  $this->output( substr( $text, 0, 100 ) . "\n" );
83  }
84  }
85 }
86 
87 $maintClass = "DumpRev";
88 require_once RUN_MAINTENANCE_IF_MAIN;
php
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Definition: skin.txt:62
DumpRev
Maintenance script that gets the text of a revision, resolving external storage if needed.
Definition: dumpRev.php:32
wfGetDB
& wfGetDB( $db, $groups=array(), $wiki=false)
Get a Database object.
Definition: GlobalFunctions.php:3650
RUN_MAINTENANCE_IF_MAIN
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
Maintenance
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
$flags
it s the revision text itself In either if gzip is the revision text is gzipped $flags
Definition: hooks.txt:2113
$dbr
$dbr
Definition: testCompression.php:48
DumpRev\__construct
__construct()
Default constructor.
Definition: dumpRev.php:33
$blob
$blob
Definition: testCompression.php:61
array
the array() calling protocol came about after MediaWiki 1.4rc1.
List of Api Query prop modules.
ExternalStore\getStoreObject
static getStoreObject( $proto, array $params=array())
Get an external store object of the given type, with the given parameters.
Definition: ExternalStore.php:54
DB_SLAVE
const DB_SLAVE
Definition: Defines.php:55
ExternalStore\fetchFromURL
static fetchFromURL( $url, array $params=array())
Fetch data from given URL.
Definition: ExternalStore.php:75
$maintClass
$maintClass
Definition: dumpRev.php:87
Maintenance\addArg
addArg( $arg, $description, $required=true)
Add some args that are needed.
Definition: Maintenance.php:207
Maintenance\error
error( $err, $die=0)
Throw an error to the user.
Definition: Maintenance.php:333
Maintenance\output
output( $out, $channel=null)
Throw some output to the user.
Definition: Maintenance.php:314
DumpRev\execute
execute()
Do the actual work.
Definition: dumpRev.php:38
Maintenance\getArg
getArg( $argId=0, $default=null)
Get an argument.
Definition: Maintenance.php:246