File indexing completed on 2024-06-16 05:30:17

 <?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) 2005-2015 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 filesystem objects.
  *
  * Note that this class cannot be used for other sources that may be supported
  * by {@link fopen()} (through URL wrappers). It may be used for local
  * filesystem objects only.
  *
  * @package    Zend_Pdf
  * @subpackage FileParser
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Pdf_FileParserDataSource_File extends Zend_Pdf_FileParserDataSource
 {
   /**** Instance Variables ****/
 
 
     /**
      * Fully-qualified path to the file.
      * @var string
      */
     protected $_filePath = '';
 
     /**
      * File resource handle .
      * @var resource
      */
     protected $_fileResource = null;
 
 
 
   /**** Public Interface ****/
 
 
   /* Concrete Class Implementation */
 
     /**
      * Object constructor.
      *
      * Validates the path to the file, ensures that it is readable, then opens
      * it for reading.
      *
      * Throws an exception if the file is missing or cannot be opened.
      *
      * @param string $filePath Fully-qualified path to the file.
      * @throws Zend_Pdf_Exception
      */
     public function __construct($filePath)
     {
         if (! (is_file($filePath) || is_link($filePath))) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception("Invalid file path: $filePath",
                                          Zend_Pdf_Exception::BAD_FILE_PATH);
         }
         if (! is_readable($filePath)) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception("File is not readable: $filePath",
                                          Zend_Pdf_Exception::NOT_READABLE);
         }
         if (($this->_size = @filesize($filePath)) === false) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception("Error while obtaining file size: $filePath",
                                          Zend_Pdf_Exception::CANT_GET_FILE_SIZE);
         }
         if (($this->_fileResource = @fopen($filePath, 'rb')) === false) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception("Cannot open file for reading: $filePath",
                                          Zend_Pdf_Exception::CANT_OPEN_FILE);
         }
         $this->_filePath = $filePath;
     }
 
     /**
      * Object destructor.
      *
      * Closes the file if it had been successfully opened.
      */
     public function __destruct()
     {
         if (is_resource($this->_fileResource)) {
             @fclose($this->_fileResource);
         }
     }
 
     /**
      * Returns the specified number of raw bytes from the file at the byte
      * offset of the current read position.
      *
      * Advances the read position by the number of bytes read.
      *
      * Throws an exception if an error was encountered while reading the file or
      * 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)
     {
         $bytes = @fread($this->_fileResource, $byteCount);
         if ($bytes === false) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception('Unexpected error while reading file',
                                          Zend_Pdf_Exception::ERROR_DURING_READ);
         }
         if (strlen($bytes) != $byteCount) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception("Insufficient data to read $byteCount bytes",
                                          Zend_Pdf_Exception::INSUFFICIENT_DATA);
         }
         $this->_offset += $byteCount;
         return $bytes;
     }
 
     /**
      * Returns the entire contents of the file as a string.
      *
      * Preserves the current file seek position.
      *
      * @return string
      */
     public function readAllBytes()
     {
         return file_get_contents($this->_filePath);
     }
 
 
   /* Object Magic Methods */
 
     /**
      * Returns the full filesystem path of the file.
      *
      * @return string
      */
     public function __toString()
     {
         return $this->_filePath;
     }
 
 
   /* Primitive Methods */
 
     /**
      * Seeks the file read position to the specified byte offset.
      *
      * Throws an exception if the file pointer cannot be moved or if it is
      * moved beyond EOF (end of file).
      *
      * @param integer $offset Destination byte offset.
      * @throws Zend_Pdf_Exception
      */
     public function moveToOffset($offset)
     {
         if ($this->_offset == $offset) {
             return;    // Not moving; do nothing.
         }
         parent::moveToOffset($offset);
         $result = @fseek($this->_fileResource, $offset, SEEK_SET);
         if ($result !== 0) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception('Error while setting new file position',
                                          Zend_Pdf_Exception::CANT_SET_FILE_POSITION);
         }
         if (feof($this->_fileResource)) {
             // require_once 'Zend/Pdf/Exception.php';
             throw new Zend_Pdf_Exception('Moved beyond the end of the file',
                                          Zend_Pdf_Exception::MOVE_BEYOND_END_OF_FILE);
         }
     }
 
 }