1: <?php
 2: 
 3: /**
 4:  * Copyright (c) 2006- Facebook
 5:  * Distributed under the Thrift Software License
 6:  *
 7:  * See accompanying file LICENSE or visit the Thrift site at:
 8:  * http://developers.facebook.com/thrift/
 9:  *
10:  * @package thrift.transport
11:  * @author Levy Klots <lklots@facebook.com>
12:  */
13: 
14: /**
15:  * A memory buffer is a tranpsort that simply reads from and writes to an
16:  * in-memory string buffer. Anytime you call write on it, the data is simply
17:  * placed into a buffer, and anytime you call read, data is read from that
18:  * buffer.
19:  *
20:  * @package thrift.transport
21:  * @author Levy Klots <lklots@facebook.com>
22:  */
23: class TMemoryBuffer extends TTransport {
24: 
25:   /**
26:    * Constructor. Optionally pass an initial value
27:    * for the buffer.
28:    */
29:   public function __construct($buf = '') {
30:     $this->buf_ = $buf;
31:   }
32: 
33:   protected $buf_ = '';
34: 
35:   public function isOpen() {
36:     return true;
37:   }
38: 
39:   public function open() {}
40: 
41:   public function close() {}
42: 
43:   public function write($buf) {
44:     $this->buf_ .= $buf;
45:   }
46: 
47:   public function read($len) {
48:     if (strlen($this->buf_) === 0) {
49:       throw new TTransportException('TMemoryBuffer: Could not read ' .
50:                                     $len . ' bytes from buffer.',
51:                                     TTransportException::UNKNOWN);
52:     }
53: 
54:     if (strlen($this->buf_) <= $len) {
55:       $ret = $this->buf_;
56:       $this->buf_ = '';
57:       return $ret;
58:     }
59: 
60:     $ret = substr($this->buf_, 0, $len);
61:     $this->buf_ = substr($this->buf_, $len);
62: 
63:     return $ret;
64:   }
65: 
66:   function getBuffer() {
67:     return $this->buf_;
68:   }
69: 
70:   public function available() {
71:     return strlen($this->buf_);
72:   }
73: }
74: 
75: ?>
76: