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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\RSS; |
| 4 | |
| 5 | use DOMDocument; |
| 6 | use DOMXPath; |
| 7 | |
| 8 | class RSSData { |
| 9 | public $error; |
| 10 | public $items; |
| 11 | |
| 12 | /** |
| 13 | * Constructor, takes a DOMDocument and returns an array of parsed items. |
| 14 | * @param DOMDocument $xml the pre-parsed XML Document |
| 15 | */ |
| 16 | public function __construct( $xml ) { |
| 17 | if ( !( $xml instanceof DOMDocument ) ) { |
| 18 | $this->error = "Not passed DOMDocument object."; |
| 19 | return; |
| 20 | } |
| 21 | $xpath = new DOMXPath( $xml ); |
| 22 | |
| 23 | // namespace-safe method to find all elements |
| 24 | $items = $xpath->query( "//*[local-name() = 'item']" ); |
| 25 | |
| 26 | if ( $items->length === 0 ) { |
| 27 | $items = $xpath->query( "//*[local-name() = 'entry']" ); |
| 28 | } |
| 29 | |
| 30 | if ( $items->length === 0 ) { |
| 31 | $this->error = 'No RSS/ATOM items found.'; |
| 32 | return; |
| 33 | } |
| 34 | |
| 35 | foreach ( $items as $item ) { |
| 36 | $bit = []; |
| 37 | foreach ( $item->childNodes as $n ) { |
| 38 | $name = $this->rssTokenToName( $n->nodeName ); |
| 39 | if ( $name != null ) { |
| 40 | /** |
| 41 | * Because for DOMElements the nodeValue is just |
| 42 | * the text of the containing element, without any |
| 43 | * tags, it makes this a safe, if unattractive, |
| 44 | * value to use. If you want to allow people to |
| 45 | * mark up their RSS, some more precautions are |
| 46 | * needed. |
| 47 | */ |
| 48 | $bit[$name] = trim( $n->nodeValue ); |
| 49 | } |
| 50 | } |
| 51 | $this->items[] = $bit; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Return a string that will be used to map RSS elements that |
| 57 | * contain similar data (e.g. dc:date, date, and pubDate) to the |
| 58 | * same array key. This works on WordPress feeds as-is, but it |
| 59 | * probably needs a way to concert dc:date format dates to be the |
| 60 | * same as pubDate. |
| 61 | * |
| 62 | * @param string $name name of the element we have |
| 63 | * @return string|null Name to map it to |
| 64 | */ |
| 65 | protected function rssTokenToName( $name ) { |
| 66 | $tokenNames = [ |
| 67 | 'dc:date' => 'date', |
| 68 | 'pubDate' => 'date', |
| 69 | 'updated' => 'date', |
| 70 | 'dc:creator' => 'author', |
| 71 | 'summary' => 'description', |
| 72 | 'content:encoded' => 'encodedContent', |
| 73 | 'category' => null, |
| 74 | 'comments' => null, |
| 75 | 'feedburner:origLink' => null, |
| 76 | 'slash:comments' => null, |
| 77 | 'slash:department' => null, |
| 78 | 'slash:hit_parade' => null, |
| 79 | 'slash:section' => null, |
| 80 | 'wfw:commentRss' => null, |
| 81 | ]; |
| 82 | |
| 83 | if ( array_key_exists( $name, $tokenNames ) ) { |
| 84 | return $tokenNames[ $name ]; |
| 85 | } |
| 86 | |
| 87 | return $name; |
| 88 | } |
| 89 | |
| 90 | } |