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Source Code for Apache Log4j 1.2.17
Apache Log4j provides the interface that applications should code to and provides the adapter components required for implementers to create a logging implementation.
Bytecode (Java 1.4) for Apache Log4j is provided in a JAR file like log4j-1.2.17.jar.
Source Code files for Apache Log4j are provided in both binary packge like log4j-1.2.17.zip and source package like log4j-1.2.17-sources.zip. You can download them at Apache Log4j Website.
You can also browse Source Code files for Apache Log4j 1.2.17 below.
✍: FYIcenter.com
⏎ org/apache/log4j/helpers/Transform.java
/* * 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 org.apache.log4j.helpers; /** Utility class for transforming strings. @author Ceki Gülcü @author Michael A. McAngus */ public class Transform { private static final String CDATA_START = "<![CDATA["; private static final String CDATA_END = "]]>"; private static final String CDATA_PSEUDO_END = "]]>"; private static final String CDATA_EMBEDED_END = CDATA_END + CDATA_PSEUDO_END + CDATA_START; private static final int CDATA_END_LEN = CDATA_END.length(); /** * This method takes a string which may contain HTML tags (ie, * <b>, <table>, etc) and replaces any * '<', '>' , '&' or '"' * characters with respective predefined entity references. * * @param input The text to be converted. * @return The input string with the special characters replaced. * */ static public String escapeTags(final String input) { //Check if the string is null, zero length or devoid of special characters // if so, return what was sent in. if(input == null || input.length() == 0 || (input.indexOf('"') == -1 && input.indexOf('&') == -1 && input.indexOf('<') == -1 && input.indexOf('>') == -1)) { return input; } //Use a StringBuffer in lieu of String concatenation -- it is //much more efficient this way. StringBuffer buf = new StringBuffer(input.length() + 6); char ch = ' '; int len = input.length(); for(int i=0; i < len; i++) { ch = input.charAt(i); if (ch > '>') { buf.append(ch); } else if(ch == '<') { buf.append("<"); } else if(ch == '>') { buf.append(">"); } else if(ch == '&') { buf.append("&"); } else if(ch == '"') { buf.append("""); } else { buf.append(ch); } } return buf.toString(); } /** * Ensures that embeded CDEnd strings (]]>) are handled properly * within message, NDC and throwable tag text. * * @param buf StringBuffer 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 str The String that is inserted into an existing CDATA Section within buf. * */ static public void appendEscapingCDATA(final StringBuffer buf, final String str) { if (str != null) { int end = str.indexOf(CDATA_END); if (end < 0) { buf.append(str); } else { int start = 0; while (end > -1) { buf.append(str.substring(start, end)); buf.append(CDATA_EMBEDED_END); start = end + CDATA_END_LEN; if (start < str.length()) { end = str.indexOf(CDATA_END, start); } else { return; } } buf.append(str.substring(start)); } } } }
⏎ org/apache/log4j/helpers/Transform.java
Or download all of them as a single archive file:
File name: log4j-1.2.17-sources.jar File size: 481200 bytes Release date: 2012-05-06 Download
⇒ Download and Install apache-log4j-1.2.15.zip
⇐ Download and Install log4j-1.2.17.zip
2015-12-14, 62630👍, 0💬
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