Initial commit.

library/Zend/Pdf/Resource/Extractor.php

@@ -0,0 +1,86 @@
+<?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_Pdf
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id:
+ */
+
+/** Internally used classes */
+// require_once 'Zend/Pdf/Element.php';
+// require_once 'Zend/Pdf/Element/Array.php';
+// require_once 'Zend/Pdf/Element/String/Binary.php';
+// require_once 'Zend/Pdf/Element/Boolean.php';
+// require_once 'Zend/Pdf/Element/Dictionary.php';
+// require_once 'Zend/Pdf/Element/Name.php';
+// require_once 'Zend/Pdf/Element/Null.php';
+// require_once 'Zend/Pdf/Element/Numeric.php';
+// require_once 'Zend/Pdf/Element/String.php';
+
+
+/**
+ * Resource extractor class is used to detach resources from original PDF document.
+ *
+ * It provides resources sharing, so different pages or other PDF resources can share
+ * its dependent resources (e.g. fonts or images) or other resources still use them without duplication.
+ * It also reduces output PDF size, required memory for PDF processing and
+ * processing time.
+ *
+ * The same extractor may be used for different source documents, several
+ * extractors may be used for constracting one target document, but extractor
+ * must not be shared between target documents.
+ *
+ * @package    Zend_Pdf
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Pdf_Resource_Extractor
+{
+    /**
+     * PDF objects factory.
+     *
+     * @var Zend_Pdf_ElementFactory_Interface
+     */
+    protected $_factory;
+
+    /**
+     * Reusable list of already processed objects
+     *
+     * @var array
+     */
+    protected $_processed;
+
+    /**
+     * Object constructor.
+     */
+    public function __construct()
+    {
+        $this->_factory   = Zend_Pdf_ElementFactory::createFactory(1);
+        $this->_processed = array();
+    }
+
+    /**
+     * Clone page, extract it and dependent objects from the current document,
+     * so it can be used within other docs
+     *
+     * return Zend_Pdf_Page
+     */
+    public function clonePage(Zend_Pdf_Page $page)
+    {
+        return $page->clonePage($this->_factory, $this->_processed);
+    }
+}
+