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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_Pdf * @subpackage FileParser * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License * @version $Id$ */
/** Zend_Pdf_FileParserDataSource */ // require_once 'Zend/Pdf/FileParserDataSource.php';
/** * Concrete subclass of {@link Zend_Pdf_FileParserDataSource} that provides an * interface to binary strings. * * @package Zend_Pdf * @subpackage FileParser * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ class Zend_Pdf_FileParserDataSource_String extends Zend_Pdf_FileParserDataSource { /**** Instance Variables ****/
/** * The string to parse. * @var string */ protected $_string = '';
/**** Public Interface ****/
/* Concrete Class Implementation */
/** * Object constructor. * * Verifies that the string is not empty. * * @param string $string String to parse. */ public function __construct($string) { if (empty($string)) { // require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception('String is empty', Zend_Pdf_Exception::PARAMETER_VALUE_OUT_OF_RANGE); } $this->_size = strlen($string); $this->_string = $string; }
/** * Object destructor. */ public function __destruct() { $this->_string = ''; }
/** * Returns the specified number of raw bytes from the string at the byte * offset of the current read position. * * Advances the read position by the number of bytes read. * * Throws an exception if there is insufficient data to completely fulfill * the request. * * @param integer $byteCount Number of bytes to read. * @return string * @throws Zend_Pdf_Exception */ public function readBytes($byteCount) { if (($this->_offset + $byteCount) > $this->_size) { // require_once 'Zend/Pdf/Exception.php';
throw new Zend_Pdf_Exception("Insufficient data to read $byteCount bytes", Zend_Pdf_Exception::INSUFFICIENT_DATA); } $bytes = substr($this->_string, $this->_offset, $byteCount); $this->_offset += $byteCount; return $bytes; }
/** * Returns the entire string. * * Preserves the current read position. * * @return string */ public function readAllBytes() { return $this->_string; }
/* Object Magic Methods */
/** * Returns a string containing the parsed string's length. * * @return string */ public function __toString() { return "String ($this->_size bytes)"; } }
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