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msd2/myoos/includes/lib/adodb/session/adodb-compress-gzip.php

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+<?php
+
+
+/*
+@version   v5.20.14  06-Jan-2019
+@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
+@copyright (c) 2014      Damien Regad, Mark Newnham and the ADOdb community
+         Contributed by Ross Smith (adodb@netebb.com).
+  Released under both BSD license and Lesser GPL library license.
+  Whenever there is any discrepancy between the two licenses,
+  the BSD license will take precedence.
+	  Set tabs to 4 for best viewing.
+
+*/
+
+if (!function_exists('gzcompress')) {
+	trigger_error('gzip functions are not available', E_USER_ERROR);
+	return 0;
+}
+
+/*
+*/
+class ADODB_Compress_Gzip {
+	/**
+	 */
+	var $_level = null;
+
+	/**
+	 */
+	var $_min_length = 1;
+
+	/**
+	 */
+	function getLevel() {
+		return $this->_level;
+	}
+
+	/**
+	 */
+	function setLevel($level) {
+		assert('$level >= 0');
+		assert('$level <= 9');
+		$this->_level = (int) $level;
+	}
+
+	/**
+	 */
+	function getMinLength() {
+		return $this->_min_length;
+	}
+
+	/**
+	 */
+	function setMinLength($min_length) {
+		assert('$min_length >= 0');
+		$this->_min_length = (int) $min_length;
+	}
+
+	/**
+	 */
+	function __construct($level = null, $min_length = null) {
+		if (!is_null($level)) {
+			$this->setLevel($level);
+		}
+
+		if (!is_null($min_length)) {
+			$this->setMinLength($min_length);
+		}
+	}
+
+	/**
+	 */
+	function write($data, $key) {
+		if (strlen($data) < $this->_min_length) {
+			return $data;
+		}
+
+		if (!is_null($this->_level)) {
+			return gzcompress($data, $this->_level);
+		} else {
+			return gzcompress($data);
+		}
+	}
+
+	/**
+	 */
+	function read($data, $key) {
+		return $data ? gzuncompress($data) : $data;
+	}
+
+}
+
+return 1;