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<?php |
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/* |
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* This file is part of the kaloa/xmp package. |
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* |
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* For full copyright and license information, please view the LICENSE file |
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* that was distributed with this source code. |
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*/ |
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namespace Kaloa\Xmp; |
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use DOMDocument; |
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use DOMXPath; |
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use Kaloa\Xmp\Properties\DublinCoreProperties; |
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use Kaloa\Xmp\Properties\ExifProperties; |
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/** |
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* Provides a read-only interface to an Extensible Metadata Platform (XMP) |
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* document. |
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* |
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* XMP data can be embedded within a variety of media file formats. For |
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* instance, many image editors use XMP to add metadata to image files. This |
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* class was originally written to retrieve data from digital photos. |
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* |
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* Usage example: |
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* |
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* <pre> |
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* use Kaloa\Xmp\Reader; |
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* |
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* $stream = fopen('/path/to/image.jpg', 'rb'); |
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* $reader = new Reader(); |
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* $xmpDocument = $reader->getXmpDocument($stream); |
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* fclose($stream); |
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* $dcProps = $xmpDocument->getDublinCoreProperties(); |
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* |
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* printf("Image title(s): %s\n", implode(', ', $dcProps->getTitle())); |
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* printf("Image tags: %s\n", implode(', ', $dcProps->getSubject())); |
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* </pre> |
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*/ |
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class Document |
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{ |
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/** |
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* Original XMP XML data. |
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* |
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* @var DOMDocument $dom |
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*/ |
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private $dom; |
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/** |
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* DublinCore schema properties found in the XMP document. |
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* |
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* @var DublinCoreProperties |
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*/ |
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private $dublinCoreProperties; |
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/** |
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* Exif schema properties found in the XMP document. |
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* |
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* @var ExifProperties |
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*/ |
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private $exifProperties; |
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/** |
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* Initializes the instance. |
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* |
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* @param DOMDocument $dom XMP document |
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*/ |
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public function __construct(DOMDocument $dom) |
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{ |
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$this->dom = $dom; |
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$xPath = new DOMXPath($dom); |
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$xPath->registerNamespace( |
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'dc', |
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'http://purl.org/dc/elements/1.1/' |
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); |
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$xPath->registerNamespace( |
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'rdf', |
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'http://www.w3.org/1999/02/22-rdf-syntax-ns#' |
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); |
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$xPath->registerNamespace( |
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'exif', |
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'http://ns.adobe.com/exif/1.0/' |
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); |
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$this->dublinCoreProperties = new DublinCoreProperties($xPath); |
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$this->exifProperties = new ExifProperties($xPath); |
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} |
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/** |
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* Returns Dublin Core (DC) schema properties found in the document. |
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* |
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* @return DublinCoreProperties |
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*/ |
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public function getDublinCoreProperties() |
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{ |
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return $this->dublinCoreProperties; |
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} |
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/** |
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* Returns EXIF schema properties found in the document. |
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* |
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* @return ExifProperties |
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*/ |
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public function getExifProperties() |
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{ |
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return $this->exifProperties; |
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} |
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} |
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mermshaus /
kaloa-xmp
