/framework/vendor/swift/lib/classes/Swift/StreamFilters/StringReplacementFilter.php

 1<?php
 2
 3/*
 4 * This file is part of SwiftMailer.
 5 * (c) 2004-2009 Chris Corbyn
 6 *
 7 * For the full copyright and license information, please view the LICENSE
 8 * file that was distributed with this source code.
 9 */
10
11//@require 'Swift/StreamFilter.php';
12
13/**
14 * Processes bytes as they pass through a buffer and replaces sequences in it.
15 * @package Swift
16 * @author Chris Corbyn
17 */
18class Swift_StreamFilters_StringReplacementFilter implements Swift_StreamFilter
19{
20  
21  /** The needle(s) to search for */
22  private $_search;
23  
24  /** The replacement(s) to make */
25  private $_replace;
26  
27  /**
28   * Create a new StringReplacementFilter with $search and $replace.
29   * @param string|array $search
30   * @param string|array $replace
31   */
32  public function __construct($search, $replace)
33  {
34    $this->_search = $search;
35    $this->_replace = $replace;
36  }
37  
38  /**
39   * Returns true if based on the buffer passed more bytes should be buffered.
40   * @param string $buffer
41   * @return boolean
42   */
43  public function shouldBuffer($buffer)
44  {
45    $endOfBuffer = substr($buffer, -1);
46    foreach ((array) $this->_search as $needle)
47    {
48      if (false !== strpos($needle, $endOfBuffer))
49      {
50        return true;
51      }
52    }
53    return false;
54  }
55  
56  /**
57   * Perform the actual replacements on $buffer and return the result.
58   * @param string $buffer
59   * @return string
60   */
61  public function filter($buffer)
62  {
63    return str_replace($this->_search, $this->_replace, $buffer);
64  }
65  
66}