723 lines
22 KiB
PHP
723 lines
22 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Pdf
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: StringParser.php 17532 2009-08-10 19:04:14Z alexander $
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*/
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/** Zend_Pdf_Element */
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require_once 'Zend/Pdf/Element.php';
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/** Zend_Pdf_Element_Array */
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require_once 'Zend/Pdf/Element/Array.php';
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/** Zend_Pdf_Element_String_Binary */
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require_once 'Zend/Pdf/Element/String/Binary.php';
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/** Zend_Pdf_Element_Boolean */
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require_once 'Zend/Pdf/Element/Boolean.php';
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/** Zend_Pdf_Element_Dictionary */
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require_once 'Zend/Pdf/Element/Dictionary.php';
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/** Zend_Pdf_Element_Name */
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require_once 'Zend/Pdf/Element/Name.php';
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/** Zend_Pdf_Element_Numeric */
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require_once 'Zend/Pdf/Element/Numeric.php';
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/** Zend_Pdf_Element_Object */
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require_once 'Zend/Pdf/Element/Object.php';
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/** Zend_Pdf_Element_Reference */
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require_once 'Zend/Pdf/Element/Reference.php';
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/** Zend_Pdf_Element_Object_Stream */
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require_once 'Zend/Pdf/Element/Object/Stream.php';
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/** Zend_Pdf_Element_String */
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require_once 'Zend/Pdf/Element/String.php';
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/** Zend_Pdf_Element_Null */
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require_once 'Zend/Pdf/Element/Null.php';
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/** Zend_Pdf_Element_Reference_Context */
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require_once 'Zend/Pdf/Element/Reference/Context.php';
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/** Zend_Pdf_Element_Reference_Table */
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require_once 'Zend/Pdf/Element/Reference/Table.php';
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/** Zend_Pdf_ElementFactory_Interface */
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require_once 'Zend/Pdf/ElementFactory/Interface.php';
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/**
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* PDF string parser
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*
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* @package Zend_Pdf
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Pdf_StringParser
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{
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/**
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* Source PDF
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*
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* @var string
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*/
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public $data = '';
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/**
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* Current position in a data
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*
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* @var integer
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*/
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public $offset = 0;
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/**
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* Current reference context
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*
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* @var Zend_Pdf_Element_Reference_Context
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*/
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private $_context = null;
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/**
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* Array of elements of the currently parsed object/trailer
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*
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* @var array
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*/
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private $_elements = array();
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/**
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* PDF objects factory.
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*
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* @var Zend_Pdf_ElementFactory_Interface
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*/
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private $_objFactory = null;
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/**
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* Clean up resources.
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*
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* Clear current state to remove cyclic object references
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*/
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public function cleanUp()
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{
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$this->_context = null;
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$this->_elements = array();
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$this->_objFactory = null;
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}
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/**
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* Character with code $chCode is white space
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*
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* @param integer $chCode
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* @return boolean
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*/
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public static function isWhiteSpace($chCode)
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{
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if ($chCode == 0x00 || // null character
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$chCode == 0x09 || // Tab
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$chCode == 0x0A || // Line feed
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$chCode == 0x0C || // Form Feed
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$chCode == 0x0D || // Carriage return
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$chCode == 0x20 // Space
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) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Character with code $chCode is a delimiter character
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*
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* @param integer $chCode
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* @return boolean
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*/
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public static function isDelimiter($chCode )
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{
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if ($chCode == 0x28 || // '('
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$chCode == 0x29 || // ')'
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$chCode == 0x3C || // '<'
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$chCode == 0x3E || // '>'
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$chCode == 0x5B || // '['
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$chCode == 0x5D || // ']'
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$chCode == 0x7B || // '{'
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$chCode == 0x7D || // '}'
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$chCode == 0x2F || // '/'
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$chCode == 0x25 // '%'
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) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Skip white space
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*
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* @param boolean $skipComment
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*/
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public function skipWhiteSpace($skipComment = true)
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{
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while ($this->offset < strlen($this->data)) {
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if (self::isWhiteSpace( ord($this->data[$this->offset]) )) {
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$this->offset++;
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} else if (ord($this->data[$this->offset]) == 0x25 && $skipComment) { // '%'
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$this->skipComment();
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} else {
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return;
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}
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}
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}
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/**
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* Skip comment
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*/
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public function skipComment()
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{
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while ($this->offset < strlen($this->data))
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{
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if (ord($this->data[$this->offset]) != 0x0A || // Line feed
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ord($this->data[$this->offset]) != 0x0d // Carriage return
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) {
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$this->offset++;
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} else {
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return;
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}
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}
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}
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/**
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* Read comment line
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*
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* @return string
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*/
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public function readComment()
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{
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$this->skipWhiteSpace(false);
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/** Check if it's a comment line */
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if ($this->data[$this->offset] != '%') {
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return '';
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}
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for ($start = $this->offset;
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$this->offset < strlen($this->data);
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$this->offset++) {
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if (ord($this->data[$this->offset]) == 0x0A || // Line feed
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ord($this->data[$this->offset]) == 0x0d // Carriage return
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) {
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break;
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}
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}
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return substr($this->data, $start, $this->offset-$start);
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}
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/**
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* Returns next lexeme from a pdf stream
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*
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* @return string
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*/
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public function readLexeme()
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{
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// $this->skipWhiteSpace();
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while (true) {
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$this->offset += strspn($this->data, "\x00\t\n\f\r ", $this->offset);
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if ($this->data[$this->offset] == '%') {
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preg_match('/[\r\n]/', $this->data, $matches, PREG_OFFSET_CAPTURE, $this->offset);
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if (count($matches) > 0) {
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$this->offset += strlen($matches[0][0]) + $matches[0][1];
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} else {
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$this->offset = strlen($this->data);
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}
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} else {
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break;
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}
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}
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if ($this->offset >= strlen($this->data)) {
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return '';
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}
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$start = $this->offset;
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if (self::isDelimiter( ord($this->data[$start]) )) {
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if ($this->data[$start] == '<' && $this->offset + 1 < strlen($this->data) && $this->data[$start+1] == '<') {
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$this->offset += 2;
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return '<<';
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} else if ($this->data[$start] == '>' && $this->offset + 1 < strlen($this->data) && $this->data[$start+1] == '>') {
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$this->offset += 2;
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return '>>';
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} else {
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$this->offset++;
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return $this->data[$start];
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}
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} else {
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while ( ($this->offset < strlen($this->data)) &&
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(!self::isDelimiter( ord($this->data[$this->offset]) )) &&
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(!self::isWhiteSpace( ord($this->data[$this->offset]) )) ) {
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$this->offset++;
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}
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return substr($this->data, $start, $this->offset - $start);
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}
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}
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/**
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* Read elemental object from a PDF stream
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*
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* @return Zend_Pdf_Element
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* @throws Zend_Pdf_Exception
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*/
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public function readElement($nextLexeme = null)
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{
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if ($nextLexeme === null) {
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$nextLexeme = $this->readLexeme();
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}
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/**
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* Note: readElement() method is a public method and could be invoked from other classes.
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* If readElement() is used not by Zend_Pdf_StringParser::getObject() method, then we should not care
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* about _elements member management.
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*/
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switch ($nextLexeme) {
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case '(':
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return ($this->_elements[] = $this->_readString());
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case '<':
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return ($this->_elements[] = $this->_readBinaryString());
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case '/':
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return ($this->_elements[] = new Zend_Pdf_Element_Name(
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Zend_Pdf_Element_Name::unescape( $this->readLexeme() )
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));
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case '[':
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return ($this->_elements[] = $this->_readArray());
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case '<<':
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return ($this->_elements[] = $this->_readDictionary());
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|
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case ')':
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// fall through to next case
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case '>':
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// fall through to next case
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case ']':
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|
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// fall through to next case
|
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case '>>':
|
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|
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// fall through to next case
|
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|
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case '{':
|
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|
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// fall through to next case
|
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|
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case '}':
|
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|
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throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X.',
|
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$this->offset));
|
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|
|
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default:
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if (strcasecmp($nextLexeme, 'true') == 0) {
|
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return ($this->_elements[] = new Zend_Pdf_Element_Boolean(true));
|
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|
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} else if (strcasecmp($nextLexeme, 'false') == 0) {
|
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|
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return ($this->_elements[] = new Zend_Pdf_Element_Boolean(false));
|
||
|
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} else if (strcasecmp($nextLexeme, 'null') == 0) {
|
||
|
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return ($this->_elements[] = new Zend_Pdf_Element_Null());
|
||
|
|
}
|
||
|
|
|
||
|
|
$ref = $this->_readReference($nextLexeme);
|
||
|
|
if ($ref !== null) {
|
||
|
|
return ($this->_elements[] = $ref);
|
||
|
|
}
|
||
|
|
|
||
|
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return ($this->_elements[] = $this->_readNumeric($nextLexeme));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read string PDF object
|
||
|
|
* Also reads trailing ')' from a pdf stream
|
||
|
|
*
|
||
|
|
* @return Zend_Pdf_Element_String
|
||
|
|
* @throws Zend_Pdf_Exception
|
||
|
|
*/
|
||
|
|
private function _readString()
|
||
|
|
{
|
||
|
|
$start = $this->offset;
|
||
|
|
$openedBrackets = 1;
|
||
|
|
|
||
|
|
while ($this->offset < strlen($this->data)) {
|
||
|
|
switch (ord( $this->data[$this->offset] )) {
|
||
|
|
case 0x28: // '(' - opened bracket in the string, needs balanced pair.
|
||
|
|
$openedBrackets++;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0x29: // ')' - pair to the opened bracket
|
||
|
|
$openedBrackets--;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 0x5C: // '\\' - escape sequence, skip next char from a check
|
||
|
|
$this->offset++;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->offset++;
|
||
|
|
if ($openedBrackets == 0) {
|
||
|
|
break; // end of string
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($openedBrackets != 0) {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Unexpected end of file while string reading. Offset - 0x%X. \')\' expected.', $start));
|
||
|
|
}
|
||
|
|
|
||
|
|
return new Zend_Pdf_Element_String(Zend_Pdf_Element_String::unescape( substr($this->data,
|
||
|
|
$start,
|
||
|
|
$this->offset - $start - 1) ));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read binary string PDF object
|
||
|
|
* Also reads trailing '>' from a pdf stream
|
||
|
|
*
|
||
|
|
* @return Zend_Pdf_Element_String_Binary
|
||
|
|
* @throws Zend_Pdf_Exception
|
||
|
|
*/
|
||
|
|
private function _readBinaryString()
|
||
|
|
{
|
||
|
|
$start = $this->offset;
|
||
|
|
|
||
|
|
while ($this->offset < strlen($this->data)) {
|
||
|
|
if (self::isWhiteSpace( ord($this->data[$this->offset]) ) ||
|
||
|
|
ctype_xdigit( $this->data[$this->offset] ) ) {
|
||
|
|
$this->offset++;
|
||
|
|
} else if ($this->data[$this->offset] == '>') {
|
||
|
|
$this->offset++;
|
||
|
|
return new Zend_Pdf_Element_String_Binary(
|
||
|
|
Zend_Pdf_Element_String_Binary::unescape( substr($this->data,
|
||
|
|
$start,
|
||
|
|
$this->offset - $start - 1) ));
|
||
|
|
} else {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Unexpected character while binary string reading. Offset - 0x%X.', $this->offset));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Unexpected end of file while binary string reading. Offset - 0x%X. \'>\' expected.', $start));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read array PDF object
|
||
|
|
* Also reads trailing ']' from a pdf stream
|
||
|
|
*
|
||
|
|
* @return Zend_Pdf_Element_Array
|
||
|
|
* @throws Zend_Pdf_Exception
|
||
|
|
*/
|
||
|
|
private function _readArray()
|
||
|
|
{
|
||
|
|
$elements = array();
|
||
|
|
|
||
|
|
while ( strlen($nextLexeme = $this->readLexeme()) != 0 ) {
|
||
|
|
if ($nextLexeme != ']') {
|
||
|
|
$elements[] = $this->readElement($nextLexeme);
|
||
|
|
} else {
|
||
|
|
return new Zend_Pdf_Element_Array($elements);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Unexpected end of file while array reading. Offset - 0x%X. \']\' expected.', $this->offset));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read dictionary PDF object
|
||
|
|
* Also reads trailing '>>' from a pdf stream
|
||
|
|
*
|
||
|
|
* @return Zend_Pdf_Element_Dictionary
|
||
|
|
* @throws Zend_Pdf_Exception
|
||
|
|
*/
|
||
|
|
private function _readDictionary()
|
||
|
|
{
|
||
|
|
$dictionary = new Zend_Pdf_Element_Dictionary();
|
||
|
|
|
||
|
|
while ( strlen($nextLexeme = $this->readLexeme()) != 0 ) {
|
||
|
|
if ($nextLexeme != '>>') {
|
||
|
|
$nameStart = $this->offset - strlen($nextLexeme);
|
||
|
|
|
||
|
|
$name = $this->readElement($nextLexeme);
|
||
|
|
$value = $this->readElement();
|
||
|
|
|
||
|
|
if (!$name instanceof Zend_Pdf_Element_Name) {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Name object expected while dictionary reading. Offset - 0x%X.', $nameStart));
|
||
|
|
}
|
||
|
|
|
||
|
|
$dictionary->add($name, $value);
|
||
|
|
} else {
|
||
|
|
return $dictionary;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Unexpected end of file while dictionary reading. Offset - 0x%X. \'>>\' expected.', $this->offset));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read reference PDF object
|
||
|
|
*
|
||
|
|
* @param string $nextLexeme
|
||
|
|
* @return Zend_Pdf_Element_Reference
|
||
|
|
*/
|
||
|
|
private function _readReference($nextLexeme = null)
|
||
|
|
{
|
||
|
|
$start = $this->offset;
|
||
|
|
|
||
|
|
if ($nextLexeme === null) {
|
||
|
|
$objNum = $this->readLexeme();
|
||
|
|
} else {
|
||
|
|
$objNum = $nextLexeme;
|
||
|
|
}
|
||
|
|
if (!ctype_digit($objNum)) { // it's not a reference
|
||
|
|
$this->offset = $start;
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
$genNum = $this->readLexeme();
|
||
|
|
if (!ctype_digit($genNum)) { // it's not a reference
|
||
|
|
$this->offset = $start;
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
$rMark = $this->readLexeme();
|
||
|
|
if ($rMark != 'R') { // it's not a reference
|
||
|
|
$this->offset = $start;
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
$ref = new Zend_Pdf_Element_Reference((int)$objNum, (int)$genNum, $this->_context, $this->_objFactory->resolve());
|
||
|
|
|
||
|
|
return $ref;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read numeric PDF object
|
||
|
|
*
|
||
|
|
* @param string $nextLexeme
|
||
|
|
* @return Zend_Pdf_Element_Numeric
|
||
|
|
*/
|
||
|
|
private function _readNumeric($nextLexeme = null)
|
||
|
|
{
|
||
|
|
if ($nextLexeme === null) {
|
||
|
|
$nextLexeme = $this->readLexeme();
|
||
|
|
}
|
||
|
|
|
||
|
|
return new Zend_Pdf_Element_Numeric($nextLexeme);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Read inderect object from a PDF stream
|
||
|
|
*
|
||
|
|
* @param integer $offset
|
||
|
|
* @param Zend_Pdf_Element_Reference_Context $context
|
||
|
|
* @return Zend_Pdf_Element_Object
|
||
|
|
*/
|
||
|
|
public function getObject($offset, Zend_Pdf_Element_Reference_Context $context)
|
||
|
|
{
|
||
|
|
if ($offset === null ) {
|
||
|
|
return new Zend_Pdf_Element_Null();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Save current offset to make getObject() reentrant
|
||
|
|
$offsetSave = $this->offset;
|
||
|
|
|
||
|
|
$this->offset = $offset;
|
||
|
|
$this->_context = $context;
|
||
|
|
$this->_elements = array();
|
||
|
|
|
||
|
|
$objNum = $this->readLexeme();
|
||
|
|
if (!ctype_digit($objNum)) {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. Object number expected.', $this->offset - strlen($objNum)));
|
||
|
|
}
|
||
|
|
|
||
|
|
$genNum = $this->readLexeme();
|
||
|
|
if (!ctype_digit($genNum)) {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. Object generation number expected.', $this->offset - strlen($genNum)));
|
||
|
|
}
|
||
|
|
|
||
|
|
$objKeyword = $this->readLexeme();
|
||
|
|
if ($objKeyword != 'obj') {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. \'obj\' keyword expected.', $this->offset - strlen($objKeyword)));
|
||
|
|
}
|
||
|
|
|
||
|
|
$objValue = $this->readElement();
|
||
|
|
|
||
|
|
$nextLexeme = $this->readLexeme();
|
||
|
|
|
||
|
|
if( $nextLexeme == 'endobj' ) {
|
||
|
|
/**
|
||
|
|
* Object is not generated by factory (thus it's not marked as modified object).
|
||
|
|
* But factory is assigned to the obect.
|
||
|
|
*/
|
||
|
|
$obj = new Zend_Pdf_Element_Object($objValue, (int)$objNum, (int)$genNum, $this->_objFactory->resolve());
|
||
|
|
|
||
|
|
foreach ($this->_elements as $element) {
|
||
|
|
$element->setParentObject($obj);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Restore offset value
|
||
|
|
$this->offset = $offsetSave;
|
||
|
|
|
||
|
|
return $obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* It's a stream object
|
||
|
|
*/
|
||
|
|
if ($nextLexeme != 'stream') {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. \'endobj\' or \'stream\' keywords expected.', $this->offset - strlen($nextLexeme)));
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$objValue instanceof Zend_Pdf_Element_Dictionary) {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. Stream extent must be preceded by stream dictionary.', $this->offset - strlen($nextLexeme)));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* References are automatically dereferenced at this moment.
|
||
|
|
*/
|
||
|
|
$streamLength = $objValue->Length->value;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 'stream' keyword must be followed by either cr-lf sequence or lf character only.
|
||
|
|
* This restriction gives the possibility to recognize all cases exactly
|
||
|
|
*/
|
||
|
|
if ($this->data[$this->offset] == "\r" &&
|
||
|
|
$this->data[$this->offset + 1] == "\n" ) {
|
||
|
|
$this->offset += 2;
|
||
|
|
} else if ($this->data[$this->offset] == "\n" ) {
|
||
|
|
$this->offset++;
|
||
|
|
} else {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. \'stream\' must be followed by either cr-lf sequence or lf character only.', $this->offset - strlen($nextLexeme)));
|
||
|
|
}
|
||
|
|
|
||
|
|
$dataOffset = $this->offset;
|
||
|
|
|
||
|
|
$this->offset += $streamLength;
|
||
|
|
|
||
|
|
$nextLexeme = $this->readLexeme();
|
||
|
|
if ($nextLexeme != 'endstream') {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. \'endstream\' keyword expected.', $this->offset - strlen($nextLexeme)));
|
||
|
|
}
|
||
|
|
|
||
|
|
$nextLexeme = $this->readLexeme();
|
||
|
|
if ($nextLexeme != 'endobj') {
|
||
|
|
throw new Zend_Pdf_Exception(sprintf('PDF file syntax error. Offset - 0x%X. \'endobj\' keyword expected.', $this->offset - strlen($nextLexeme)));
|
||
|
|
}
|
||
|
|
|
||
|
|
$obj = new Zend_Pdf_Element_Object_Stream(substr($this->data,
|
||
|
|
$dataOffset,
|
||
|
|
$streamLength),
|
||
|
|
(int)$objNum,
|
||
|
|
(int)$genNum,
|
||
|
|
$this->_objFactory->resolve(),
|
||
|
|
$objValue);
|
||
|
|
|
||
|
|
foreach ($this->_elements as $element) {
|
||
|
|
$element->setParentObject($obj);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Restore offset value
|
||
|
|
$this->offset = $offsetSave;
|
||
|
|
|
||
|
|
return $obj;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get length of source string
|
||
|
|
*
|
||
|
|
* @return integer
|
||
|
|
*/
|
||
|
|
public function getLength()
|
||
|
|
{
|
||
|
|
return strlen($this->data);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get source string
|
||
|
|
*
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function getString()
|
||
|
|
{
|
||
|
|
return $this->data;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Parse integer value from a binary stream
|
||
|
|
*
|
||
|
|
* @param string $stream
|
||
|
|
* @param integer $offset
|
||
|
|
* @param integer $size
|
||
|
|
* @return integer
|
||
|
|
*/
|
||
|
|
public static function parseIntFromStream($stream, $offset, $size)
|
||
|
|
{
|
||
|
|
$value = 0;
|
||
|
|
for ($count = 0; $count < $size; $count++) {
|
||
|
|
$value *= 256;
|
||
|
|
$value += ord($stream[$offset + $count]);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set current context
|
||
|
|
*
|
||
|
|
* @param Zend_Pdf_Element_Reference_Context $context
|
||
|
|
*/
|
||
|
|
public function setContext(Zend_Pdf_Element_Reference_Context $context)
|
||
|
|
{
|
||
|
|
$this->_context = $context;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Object constructor
|
||
|
|
*
|
||
|
|
* Note: PHP duplicates string, which is sent by value, only of it's updated.
|
||
|
|
* Thus we don't need to care about overhead
|
||
|
|
*
|
||
|
|
* @param string $pdfString
|
||
|
|
* @param Zend_Pdf_ElementFactory_Interface $factory
|
||
|
|
*/
|
||
|
|
public function __construct($source, Zend_Pdf_ElementFactory_Interface $factory)
|
||
|
|
{
|
||
|
|
$this->data = $source;
|
||
|
|
$this->_objFactory = $factory;
|
||
|
|
}
|
||
|
|
}
|