LoggerTransform.php
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<?php
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*
* @package log4php
* @subpackage helpers
*/
/**
* @ignore
*/
if (!defined('LOG4PHP_DIR')) define('LOG4PHP_DIR', dirname(__FILE__) . '/..');
define('LOG4PHP_LOGGER_TRANSFORM_CDATA_START', '<![CDATA[');
define('LOG4PHP_LOGGER_TRANSFORM_CDATA_END', ']]>');
define('LOG4PHP_LOGGER_TRANSFORM_CDATA_PSEUDO_END', ']]>');
define('LOG4PHP_LOGGER_TRANSFORM_CDATA_EMBEDDED_END',
LOG4PHP_LOGGER_TRANSFORM_CDATA_END .
LOG4PHP_LOGGER_TRANSFORM_CDATA_PSEUDO_END .
LOG4PHP_LOGGER_TRANSFORM_CDATA_START
);
/**
* Utility class for transforming strings.
*
* @author Marco Vassura
* @package log4php
* @subpackage helpers
* @since 0.7
*/
class LoggerTransform {
/**
* This method takes a string which may contain HTML tags (ie,
* <b>, <table>, etc) and replaces any '<' and '>'
* characters with respective predefined entity references.
*
* @param string $input The text to be converted.
* @return string The input string with the characters '<' and '>' replaced with
* &lt; and &gt; respectively.
* @static
*/
function escapeTags($input)
{
//Check if the string is null or zero length -- if so, return
//what was sent in.
if(empty($input))
return $input;
//Use a StringBuffer in lieu of String concatenation -- it is
//much more efficient this way.
return htmlspecialchars($input, ENT_NOQUOTES);
}
/**
* Ensures that embeded CDEnd strings (]]>) are handled properly
* within message, NDC and throwable tag text.
*
* @param string $buf String holding the XML data to this point. The
* initial CDStart (<![CDATA[) and final CDEnd (]]>)
* of the CDATA section are the responsibility of
* the calling method.
* @param string &str The String that is inserted into an existing
* CDATA Section within buf.
* @static
*/
function appendEscapingCDATA(&$buf, $str)
{
if(empty($str))
return;
$rStr = str_replace(
LOG4PHP_LOGGER_TRANSFORM_CDATA_END,
LOG4PHP_LOGGER_TRANSFORM_CDATA_EMBEDDED_END,
$str
);
$buf .= $rStr;
}
}