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Viewing changes to html/adodb/session/adodb-compress-bzip2.php

  • Committer: Bazaar Package Importer
  • Author(s): Cameron Dale
  • Date: 2006-04-14 15:13:06 UTC
  • Revision ID: james.westby@ubuntu.com-20060414151306-dwc5yc3hof3l2kmf
Tags: upstream-2.1
Import upstream version 2.1

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html/adodb/session/adodb-compress-bzip2.php
 
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<?php
 
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/*
 
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V4.80 8 Mar 2006  (c) 2000-2006 John Lim (jlim@natsoft.com.my). All rights reserved.
 
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         Contributed by Ross Smith (adodb@netebb.com). 
 
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  Released under both BSD license and Lesser GPL library license.
 
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  Whenever there is any discrepancy between the two licenses,
 
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  the BSD license will take precedence.
 
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          Set tabs to 4 for best viewing.
 
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*/
 
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if (!function_exists('bzcompress')) {
 
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        trigger_error('bzip2 functions are not available', E_USER_ERROR);
 
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        return 0;
 
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}
 
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/*
 
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*/
 
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class ADODB_Compress_Bzip2 {
 
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        /**
 
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         */
 
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        var $_block_size = null;
 
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        /**
 
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         */
 
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        var $_work_level = null;
 
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        /**
 
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         */
 
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        var $_min_length = 1;
 
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        /**
 
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         */
 
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        function getBlockSize() {
 
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                return $this->_block_size;
 
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        }
 
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        /**
 
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         */
 
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        function setBlockSize($block_size) {
 
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                assert('$block_size >= 1');
 
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                assert('$block_size <= 9');
 
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                $this->_block_size = (int) $block_size;
 
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        }
 
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        /**
 
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         */
 
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        function getWorkLevel() {
 
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                return $this->_work_level;
 
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        }
 
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        /**
 
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         */
 
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        function setWorkLevel($work_level) {
 
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                assert('$work_level >= 0');
 
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                assert('$work_level <= 250');
 
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                $this->_work_level = (int) $work_level;
 
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        }
 
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        /**
 
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         */
 
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        function getMinLength() {
 
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                return $this->_min_length;
 
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        }
 
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        /**
 
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         */
 
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        function setMinLength($min_length) {
 
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                assert('$min_length >= 0');
 
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                $this->_min_length = (int) $min_length;
 
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        }
 
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        /**
 
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         */
 
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        function ADODB_Compress_Bzip2($block_size = null, $work_level = null, $min_length = null) {
 
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                if (!is_null($block_size)) {
 
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                        $this->setBlockSize($block_size);
 
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                }
 
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                if (!is_null($work_level)) {
 
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                        $this->setWorkLevel($work_level);
 
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                }
 
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                if (!is_null($min_length)) {
 
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                        $this->setMinLength($min_length);
 
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                }
 
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        }
 
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        /**
 
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         */
 
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        function write($data, $key) {
 
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                if (strlen($data) < $this->_min_length) {
 
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                        return $data;
 
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                }
 
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                if (!is_null($this->_block_size)) {
 
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                        if (!is_null($this->_work_level)) {
 
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                                return bzcompress($data, $this->_block_size, $this->_work_level);
 
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                        } else {
 
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                                return bzcompress($data, $this->_block_size);
 
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                        }
 
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                }
 
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                return bzcompress($data);
 
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        }
 
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        /**
 
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         */
 
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        function read($data, $key) {
 
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                return $data ? bzdecompress($data) : $data;
 
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        }
 
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}
 
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return 1;
 
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?>