scratch – Blame information for rev 87
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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 87 | office | 1 | <?php |
| 2 | |||
| 3 | namespace Fusonic\OpenGraph; |
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| 4 | |||
| 5 | use Fusonic\OpenGraph\Objects\ObjectBase; |
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| 6 | |||
| 7 | /** |
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| 8 | * Class for generating Open Graph tags from objects. |
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| 9 | */ |
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| 10 | class Publisher |
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| 11 | { |
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| 12 | const DOCTYPE_HTML5 = 1; |
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| 13 | const DOCTYPE_XHTML = 2; |
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| 14 | |||
| 15 | /** |
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| 16 | * Defines the style in which HTML tags should be written. Use one of Publisher::DOCTYPE_HTML5 or |
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| 17 | * Publisher::DOCTYPE_XHTML. |
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| 18 | * |
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| 19 | * @var int |
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| 20 | */ |
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| 21 | public $doctype = self::DOCTYPE_HTML5; |
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| 22 | |||
| 23 | public function __construct() |
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| 24 | { |
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| 25 | } |
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| 26 | |||
| 27 | public function generateHtml(ObjectBase $object) |
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| 28 | { |
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| 29 | $html = ""; |
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| 30 | $format = "<meta property=\"%s\" content=\"%s\"" . ($this->doctype == self::DOCTYPE_XHTML ? " />" : ">"); |
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| 31 | |||
| 32 | foreach ($object->getProperties() as $property) { |
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| 33 | if ($html !== "") { |
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| 34 | $html .= "\n"; |
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| 35 | } |
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| 36 | |||
| 37 | if ($property->value === null) { |
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| 38 | continue; |
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| 39 | } elseif ($property->value instanceof \DateTime) { |
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| 40 | $value = $property->value->format("c"); |
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| 41 | } elseif (is_object($property->value)) { |
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| 42 | throw new \UnexpectedValueException( |
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| 43 | sprintf( |
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| 44 | "Cannot handle value of type '%0' for property '%1'.", |
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| 45 | get_class($property->value), |
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| 46 | $property->key |
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| 47 | ) |
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| 48 | ); |
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| 49 | } elseif ($property->value === true) { |
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| 50 | $value = "1"; |
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| 51 | } elseif ($property->value === false) { |
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| 52 | $value = "0"; |
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| 53 | } else { |
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| 54 | $value = (string)$property->value; |
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| 55 | } |
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| 56 | |||
| 57 | $html .= sprintf($format, $property->key, htmlspecialchars($value)); |
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| 58 | } |
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| 59 | |||
| 60 | return $html; |
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| 61 | } |
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| 62 | } |