1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_View

    17  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    18  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    19  * @version    $Id: Stream.php 20096 2010-01-06 02:05:09Z bkarwin $

    20  */

    21 

    22 /**

    23  * Stream wrapper to convert markup of mostly-PHP templates into PHP prior to

    24  * include().

    25  *

    26  * Based in large part on the example at

    27  * http://www.php.net/manual/en/function.stream-wrapper-register.php

    28  *

    29  * As well as the example provided at:

    30  *     http://mikenaberezny.com/2006/02/19/symphony-templates-ruby-erb/

    31  * written by

    32  *     Mike Naberezny (@link http://mikenaberezny.com)

    33  *     Paul M. Jones  (@link http://paul-m-jones.com)

    34  *

    35  * @category   Zend

    36  * @package    Zend_View

    37  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    38  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    39  */

    40 class Zend_View_Stream

    41 {

    42     /**

    43      * Current stream position.

    44      *

    45      * @var int

    46      */

    47     protected $_pos = 0;

    48 

    49     /**

    50      * Data for streaming.

    51      *

    52      * @var string

    53      */

    54     protected $_data;

    55 

    56     /**

    57      * Stream stats.

    58      *

    59      * @var array

    60      */

    61     protected $_stat;

    62 

    63     /**

    64      * Opens the script file and converts markup.

    65      */

    66     public function stream_open($path, $mode, $options, &$opened_path)

    67     {

    68         // get the view script source

    69         $path        = str_replace('zend.view://', '', $path);

    70         $this->_data = file_get_contents($path);

    71 

    72         /**

    73          * If reading the file failed, update our local stat store

    74          * to reflect the real stat of the file, then return on failure

    75          */

    76         if ($this->_data === false) {

    77             $this->_stat = stat($path);

    78             return false;

    79         }

    80 

    81         /**

    82          * Convert <?= ?> to long-form <?php echo ?> and <? ?> to <?php ?>

    83          *

    84          */

    85         $this->_data = preg_replace('/\<\?\=/',          "<?php echo ",  $this->_data);

    86         $this->_data = preg_replace('/<\?(?!xml|php)/s', '<?php ',       $this->_data);

    87 

    88         /**

    89          * file_get_contents() won't update PHP's stat cache, so we grab a stat

    90          * of the file to prevent additional reads should the script be

    91          * requested again, which will make include() happy.

    92          */

    93         $this->_stat = stat($path);

    94 

    95         return true;

    96     }

    97 

    98     /**

    99      * Included so that __FILE__ returns the appropriate info

   100      *

   101      * @return array

   102      */

   103     public function url_stat()

   104     {

   105         return $this->_stat;

   106     }

   107 

   108     /**

   109      * Reads from the stream.

   110      */

   111     public function stream_read($count)

   112     {

   113         $ret = substr($this->_data, $this->_pos, $count);

   114         $this->_pos += strlen($ret);

   115         return $ret;

   116     }

   117 

   118 

   119     /**

   120      * Tells the current position in the stream.

   121      */

   122     public function stream_tell()

   123     {

   124         return $this->_pos;

   125     }

   126 

   127 

   128     /**

   129      * Tells if we are at the end of the stream.

   130      */

   131     public function stream_eof()

   132     {

   133         return $this->_pos >= strlen($this->_data);

   134     }

   135 

   136 

   137     /**

   138      * Stream statistics.

   139      */

   140     public function stream_stat()

   141     {

   142         return $this->_stat;

   143     }

   144 

   145 

   146     /**

   147      * Seek to a specific point in the stream.

   148      */

   149     public function stream_seek($offset, $whence)

   150     {

   151         switch ($whence) {

   152             case SEEK_SET:

   153                 if ($offset < strlen($this->_data) && $offset >= 0) {

   154                 $this->_pos = $offset;

   155                     return true;

   156                 } else {

   157                     return false;

   158                 }

   159                 break;

   160 

   161             case SEEK_CUR:

   162                 if ($offset >= 0) {

   163                     $this->_pos += $offset;

   164                     return true;

   165                 } else {

   166                     return false;

   167                 }

   168                 break;

   169 

   170             case SEEK_END:

   171                 if (strlen($this->_data) + $offset >= 0) {

   172                     $this->_pos = strlen($this->_data) + $offset;

   173                     return true;

   174                 } else {

   175                     return false;

   176                 }

   177                 break;

   178 

   179             default:

   180                 return false;

   181         }

   182     }

   183 }