001: /*****************************************************************************
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is the CVS Client Library.
027: * The Initial Developer of the Original Software is Robert Greig.
028: * Portions created by Robert Greig are Copyright (C) 2000.
029: * All Rights Reserved.
030: *
031: * If you wish your version of this file to be governed by only the CDDL
032: * or only the GPL Version 2, indicate your decision by adding
033: * "[Contributor] elects to include this software in this distribution
034: * under the [CDDL or GPL Version 2] license." If you do not indicate a
035: * single choice of license, a recipient has the option to distribute
036: * your version of this file under either the CDDL, the GPL Version 2 or
037: * to extend the choice of license to its licensees as provided above.
038: * However, if you add GPL Version 2 code and therefore, elected the GPL
039: * Version 2 license, then the option applies only if the new code is
040: * made subject to such option by the copyright holder.
041: *
042: * Contributor(s): Robert Greig.
043: *****************************************************************************/package org.netbeans.lib.cvsclient.util;
044:
045: import java.io.*;
046:
047: /**
048: * Handles the logging of communication to and from the server
049: *
050: * @author Robert Greig
051: * @author Petr Kuzel rewriten to streams
052: */
053: public final class Logger {
054: /**
055: * The output stream to use to write communication sent to the server
056: */
057: private static OutputStream outLogStream;
058:
059: /**
060: * The output stream to use to write communication received from the server
061: */
062: private static OutputStream inLogStream;
063:
064: /**
065: * The log files path. If the property is set to the constant "system"
066: * then it uses System.err, otherwise it tries to create a file at the
067: * specified path
068: */
069: private static final String LOG_PROPERTY = "cvsClientLog"; // NOI18N
070:
071: /**
072: * Whether we are logging or not
073: */
074: private static boolean logging;
075:
076: static {
077: setLogging(System.getProperty(LOG_PROPERTY));
078: }
079:
080: public static void setLogging(String logPath) {
081: logging = (logPath != null);
082:
083: try {
084: if (logging) {
085: if (logPath.equals("system")) { // NOI18N
086: outLogStream = System.err;
087: inLogStream = System.err;
088: } else {
089: outLogStream = new BufferedOutputStream(
090: new FileOutputStream(logPath + ".out")); // NOI18N
091: inLogStream = new BufferedOutputStream(
092: new FileOutputStream(logPath + ".in")); // NOI18N
093: }
094: }
095: } catch (IOException e) {
096: System.err.println("Unable to create log files: " + e); // NOI18N
097: System.err.println("Logging DISABLED"); // NOI18N
098: logging = false;
099: try {
100: if (outLogStream != null) {
101: outLogStream.close();
102: }
103: } catch (IOException ex2) {
104: // ignore, if we get one here we really are screwed
105: }
106:
107: try {
108: if (inLogStream != null) {
109: inLogStream.close();
110: }
111: } catch (IOException ex2) {
112: // ignore, if we get one here we really are screwed
113: }
114: }
115: }
116:
117: /**
118: * Log a message received from the server. The message is logged if
119: * logging is enabled
120: * @param received the data received from the server
121: */
122: public static void logInput(byte[] received) {
123: logInput(received, 0, received.length);
124: }
125:
126: /**
127: * Log a message received from the server. The message is logged if
128: * logging is enabled
129: * @param received the data received from the server
130: */
131: public static void logInput(byte[] received, int offset, int len) {
132: if (!logging) {
133: return;
134: }
135:
136: try {
137: inLogStream.write(received, offset, len);
138: inLogStream.flush();
139: } catch (IOException ex) {
140: System.err.println("Could not write to log file: " + ex); // NOI18N
141: System.err.println("Logging DISABLED."); // NOI18N
142: logging = false;
143: }
144: }
145:
146: /**
147: * Log a character received from the server. The message is logged if
148: * logging is enabled
149: * @param received the data received from the server
150: */
151: public static void logInput(char received) {
152: if (!logging) {
153: return;
154: }
155:
156: try {
157: inLogStream.write(received);
158: inLogStream.flush();
159: } catch (IOException ex) {
160: System.err.println("Could not write to log file: " + ex); // NOI18N
161: System.err.println("Logging DISABLED."); // NOI18N
162: logging = false;
163: }
164: }
165:
166: /**
167: * Log a message sent to the server. The message is logged if
168: * logging is enabled
169: * @param sent the data sent to the server
170: */
171: public static void logOutput(byte[] sent) {
172: if (!logging) {
173: return;
174: }
175:
176: try {
177: outLogStream.write(sent);
178: outLogStream.flush();
179: } catch (IOException ex) {
180: System.err.println("Could not write to log file: " + ex); // NOI18N
181: System.err.println("Logging DISABLED."); // NOI18N
182: logging = false;
183: }
184: }
185: }
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