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adodb-compress-gzip.php
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1 <?php
2 
3 
4 /*
5 V5.19 23-Apr-2014 (c) 2000-2014 John Lim (jlim#natsoft.com). All rights reserved.
6  Contributed by Ross Smith (adodb@netebb.com).
7  Released under both BSD license and Lesser GPL library license.
8  Whenever there is any discrepancy between the two licenses,
9  the BSD license will take precedence.
10  Set tabs to 4 for best viewing.
11 
12 */
13 
14 if (!function_exists('gzcompress')) {
15  trigger_error('gzip functions are not available', E_USER_ERROR);
16  return 0;
17 }
18 
19 /*
20 */
21 class ADODB_Compress_Gzip {
24  var $_level = null;
25 
28  var $_min_length = 1;
29 
32  function getLevel() {
33  return $this->_level;
34  }
35 
38  function setLevel($level) {
39  assert('$level >= 0');
40  assert('$level <= 9');
41  $this->_level = (int) $level;
42  }
43 
46  function getMinLength() {
47  return $this->_min_length;
48  }
49 
52  function setMinLength($min_length) {
53  assert('$min_length >= 0');
54  $this->_min_length = (int) $min_length;
55  }
56 
59  function ADODB_Compress_Gzip($level = null, $min_length = null) {
60  if (!is_null($level)) {
61  $this->setLevel($level);
62  }
63 
64  if (!is_null($min_length)) {
65  $this->setMinLength($min_length);
66  }
67  }
68 
71  function write($data, $key) {
72  if (strlen($data) < $this->_min_length) {
73  return $data;
74  }
75 
76  if (!is_null($this->_level)) {
77  return gzcompress($data, $this->_level);
78  } else {
79  return gzcompress($data);
80  }
81  }
82 
85  function read($data, $key) {
86  return $data ? gzuncompress($data) : $data;
87  }
88 
89 }
90 
91 return 1;
ADODB_Compress_Gzip\setMinLength
setMinLength($min_length)
Definition: adodb-compress-gzip.php:52
ADODB_Compress_Gzip\read
read($data, $key)
Definition: adodb-compress-gzip.php:85
ADODB_Compress_Gzip\$_min_length
$_min_length
Definition: adodb-compress-gzip.php:28
E_USER_ERROR
if(!defined('ADODB_ERROR_HANDLER_TYPE')) define('ADODB_ERROR_HANDLER_TYPE' E_USER_ERROR
Definition: adodb-errorhandler.inc.php:16
ADODB_Compress_Gzip\getMinLength
getMinLength()
Definition: adodb-compress-gzip.php:46
ADODB_Compress_Gzip\ADODB_Compress_Gzip
ADODB_Compress_Gzip($level=null, $min_length=null)
Definition: adodb-compress-gzip.php:59
ADODB_Compress_Gzip\write
write($data, $key)
Definition: adodb-compress-gzip.php:71
ADODB_Compress_Gzip
Definition: adodb-compress-gzip.php:21
ADODB_Compress_Gzip\getLevel
getLevel()
Definition: adodb-compress-gzip.php:32
ADODB_Compress_Gzip\setLevel
setLevel($level)
Definition: adodb-compress-gzip.php:38
ADODB_Compress_Gzip\$_level
$_level
Definition: adodb-compress-gzip.php:24