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1 <?php
2 /**
3  * Note: this entire file is a byte-for-byte copy of UserArray.php with
4  * s/User/Title/.  If anyone can figure out how to do this nicely with inheri-
5  * tance or something, please do so.
6  */
7
8 /**
9  * The TitleArray class only exists to provide the newFromResult method at pre-
10  * sent.
11  */
12 abstract class TitleArray implements Iterator {
13         /**
14          * @param $res result A MySQL result including at least page_namespace and
15          *   page_title -- also can have page_id, page_len, page_is_redirect,
16          *   page_latest (if those will be used).  See Title::newFromRow.
17          * @return TitleArray
18          */
19         static function newFromResult( $res ) {
20                 $array = null;
21                 if ( !wfRunHooks( 'TitleArrayFromResult', array( &$array, $res ) ) ) {
22                         return null;
23                 }
24                 if ( $array === null ) {
25                         $array = self::newFromResult_internal( $res );
26                 }
27                 return $array;
28         }
29
30         protected static function newFromResult_internal( $res ) {
31                 $array = new TitleArrayFromResult( $res );
32                 return $array;
33         }
34 }
35
36 class TitleArrayFromResult extends TitleArray {
37         var $res;
38         var $key, $current;
39
40         function __construct( $res ) {
41                 $this->res = $res;
42                 $this->key = 0;
43                 $this->setCurrent( $this->res->current() );
44         }
45
46         protected function setCurrent( $row ) {
47                 if ( $row === false ) {
48                         $this->current = false;
49                 } else {
50                         $this->current = Title::newFromRow( $row );
51                 }
52         }
53
54         public function count() {
55                 return $this->res->numRows();
56         }
57
58         function current() {
59                 return $this->current;
60         }
61
62         function key() {
63                 return $this->key;
64         }
65
66         function next() {
67                 $row = $this->res->next();
68                 $this->setCurrent( $row );
69                 $this->key++;
70         }
71
72         function rewind() {
73                 $this->res->rewind();
74                 $this->key = 0;
75                 $this->setCurrent( $this->res->current() );
76         }
77
78         function valid() {
79                 return $this->current !== false;
80         }
81 }