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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Search_Lucene
* @subpackage Document
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Pptx.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/** Zend_Search_Lucene_Document_OpenXml */
require_once 'Zend/Search/Lucene/Document/OpenXml.php';
/**
* Pptx document.
*
* @category Zend
* @package Zend_Search_Lucene
* @subpackage Document
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Search_Lucene_Document_Pptx extends Zend_Search_Lucene_Document_OpenXml
{
/**
* Xml Schema - PresentationML
*
* @var string
*/
const SCHEMA_PRESENTATIONML = 'http://schemas.openxmlformats.org/presentationml/2006/main';
/**
* Xml Schema - DrawingML
*
* @var string
*/
const SCHEMA_DRAWINGML = 'http://schemas.openxmlformats.org/drawingml/2006/main';
/**
* Xml Schema - Slide relation
*
* @var string
*/
const SCHEMA_SLIDERELATION = 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide';
/**
* Xml Schema - Slide notes relation
*
* @var string
*/
const SCHEMA_SLIDENOTESRELATION = 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/notesSlide';
/**
* Object constructor
*
* @param string $fileName
* @param boolean $storeContent
* @throws Zend_Search_Lucene_Exception
*/
private function __construct($fileName, $storeContent)
{
if (!class_exists('ZipArchive', false)) {
require_once 'Zend/Search/Lucene/Exception.php';
throw new Zend_Search_Lucene_Exception('MS Office documents processing functionality requires Zip extension to be loaded');
}
// Document data holders
$slides = array();
$slideNotes = array();
$documentBody = array();
$coreProperties = array();
// Open OpenXML package
$package = new ZipArchive();
$package->open($fileName);
// Read relations and search for officeDocument
$relationsXml = $package->getFromName('_rels/.rels');
if ($relationsXml === false) {
require_once 'Zend/Search/Lucene/Exception.php';
throw new Zend_Search_Lucene_Exception('Invalid archive or corrupted .pptx file.');
}
$relations = simplexml_load_string($relationsXml);
foreach ($relations->Relationship as $rel) {
if ($rel["Type"] == Zend_Search_Lucene_Document_OpenXml::SCHEMA_OFFICEDOCUMENT) {
// Found office document! Search for slides...
$slideRelations = simplexml_load_string($package->getFromName( $this->absoluteZipPath(dirname($rel["Target"]) . "/_rels/" . basename($rel["Target"]) . ".rels")) );
foreach ($slideRelations->Relationship as $slideRel) {
if ($slideRel["Type"] == Zend_Search_Lucene_Document_Pptx::SCHEMA_SLIDERELATION) {
// Found slide!
$slides[ str_replace( 'rId', '', (string)$slideRel["Id"] ) ] = simplexml_load_string(
$package->getFromName( $this->absoluteZipPath(dirname($rel["Target"]) . "/" . dirname($slideRel["Target"]) . "/" . basename($slideRel["Target"])) )
);
// Search for slide notes
$slideNotesRelations = simplexml_load_string($package->getFromName( $this->absoluteZipPath(dirname($rel["Target"]) . "/" . dirname($slideRel["Target"]) . "/_rels/" . basename($slideRel["Target"]) . ".rels")) );
foreach ($slideNotesRelations->Relationship as $slideNoteRel) {
if ($slideNoteRel["Type"] == Zend_Search_Lucene_Document_Pptx::SCHEMA_SLIDENOTESRELATION) {
// Found slide notes!
$slideNotes[ str_replace( 'rId', '', (string)$slideRel["Id"] ) ] = simplexml_load_string(
$package->getFromName( $this->absoluteZipPath(dirname($rel["Target"]) . "/" . dirname($slideRel["Target"]) . "/" . dirname($slideNoteRel["Target"]) . "/" . basename($slideNoteRel["Target"])) )
);
break;
}
}
}
}
break;
}
}
// Sort slides
ksort($slides);
ksort($slideNotes);
// Extract contents from slides
foreach ($slides as $slideKey => $slide) {
// Register namespaces
$slide->registerXPathNamespace("p", Zend_Search_Lucene_Document_Pptx::SCHEMA_PRESENTATIONML);
$slide->registerXPathNamespace("a", Zend_Search_Lucene_Document_Pptx::SCHEMA_DRAWINGML);
// Fetch all text
$textElements = $slide->xpath('//a:t');
foreach ($textElements as $textElement) {
$documentBody[] = (string)$textElement;
}
// Extract contents from slide notes
if (isset($slideNotes[$slideKey])) {
// Fetch slide note
$slideNote = $slideNotes[$slideKey];
// Register namespaces
$slideNote->registerXPathNamespace("p", Zend_Search_Lucene_Document_Pptx::SCHEMA_PRESENTATIONML);
$slideNote->registerXPathNamespace("a", Zend_Search_Lucene_Document_Pptx::SCHEMA_DRAWINGML);
// Fetch all text
$textElements = $slideNote->xpath('//a:t');
foreach ($textElements as $textElement) {
$documentBody[] = (string)$textElement;
}
}
}
// Read core properties
$coreProperties = $this->extractMetaData($package);
// Close file
$package->close();
// Store filename
$this->addField(Zend_Search_Lucene_Field::Text('filename', $fileName, 'UTF-8'));
// Store contents
if ($storeContent) {
$this->addField(Zend_Search_Lucene_Field::Text('body', implode(' ', $documentBody), 'UTF-8'));
} else {
$this->addField(Zend_Search_Lucene_Field::UnStored('body', implode(' ', $documentBody), 'UTF-8'));
}
// Store meta data properties
foreach ($coreProperties as $key => $value)
{
$this->addField(Zend_Search_Lucene_Field::Text($key, $value, 'UTF-8'));
}
// Store title (if not present in meta data)
if (!isset($coreProperties['title']))
{
$this->addField(Zend_Search_Lucene_Field::Text('title', $fileName, 'UTF-8'));
}
}
/**
* Load Pptx document from a file
*
* @param string $fileName
* @param boolean $storeContent
* @return Zend_Search_Lucene_Document_Pptx
*/
public static function loadPptxFile($fileName, $storeContent = false)
{
return new Zend_Search_Lucene_Document_Pptx($fileName, $storeContent);
}
}
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