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1
21
22
23 package com.ice.util;
24
25 import java.io.*;
26 import java.lang.*;
27 import java.util.*;
28
29
30 public class
31 FileLog extends Object 
32 {
33 private static final String RCS_ID = "$Id: FileLog.java,v 1.2 2004/03/05 12:20:31 deniger Exp $";
34 private static final String RCS_REV = "$Revision: 1.2 $";
35 private static final String RCS_NAME = "$Name: $";
36
37 private static final String DEFAULT_FILENAME = "log.txt";
38
39 private static FileLog defaultLogger= null;
40
41 private String filename;
42 private FileWriter file;
43 private PrintWriter stream;
44 private boolean open;
45 private boolean echo;
46 private boolean autoFlush;
47
48
49 static public FileLog
50 getDefaultLogger()
51 {
52 return FileLog.defaultLogger;
53 }
54
55 static public FileLog
56 setDefaultLogger( FileLog logger )
57 {
58 FileLog old = FileLog.defaultLogger;
59 FileLog.defaultLogger = logger;
60 return old;
61 }
62
63 static public void
64 checkDefaultLogger()
65 {
66 if ( FileLog.defaultLogger == null )
67 {
68 FileLog.defaultLogger =
69 new FileLog( FileLog.DEFAULT_FILENAME );
70 }
71 }
72
73 public
74 FileLog( String filename )
75 {
76 this.open = false;
77 this.echo = false;
78 this.autoFlush = true;
79 this.filename = filename;
80 this.file = null;
81 this.stream = null;
82 }
83
84 public void
85 setLogFilename( String filename )
86 {
87 this.filename = filename;
88 }
89
90 public void
91 setAutoFlush( boolean autoflush )
92 {
93 this.autoFlush = autoflush;
94 }
95
96 public void
97 checkLogOpen()
98 {
99 if ( ! this.open )
100 {
101 this.openLogFile();
102 }
103 }
104
105 public void
106 openLogFile()
107 {
108 boolean isok = true;
109
110 try {
111 this.file = new FileWriter( this.filename );
112 }
113 catch ( Exception ex )
114 {
115 System.err.println
116 ( "error opening log file '" + this.filename
117 + "' - " + ex.getMessage() );
118 this.file = null;
119 isok = false;
120 }
121
122 if ( isok )
123 {
124 this.stream = new PrintWriter( this.file );
125 this.open = true;
126 }
127
128 this.echo = false;
129 }
130
131 public void
132 closeLog()
133 {
134 if ( this.open )
135 {
136 this.open = false;
137 if ( this.stream != null )
138 {
139 this.stream.flush();
140 this.stream.close();
141 this.stream = null;
142 }
143 }
144 }
145
146 public void
147 setEcho( boolean setting )
148 {
149 this.echo = setting;
150 }
151
152 public void
153 traceMsg( Throwable thrown, String msg )
154 {
155 this.logMsg( msg );
156 this.logMsg( thrown.getMessage() );
157
158 if ( ! this.open )
159 thrown.printStackTrace( System.err );
160 else
161 thrown.printStackTrace( this.stream );
162
163 if ( this.autoFlush && this.open )
164 this.stream.flush();
165 }
166
167
168 static public void
169 defLogMsg( String msg )
170 {
171 FileLog.checkDefaultLogger();
172 if ( FileLog.defaultLogger != null )
173 FileLog.defaultLogger.logMsg( msg );
174 }
175
176 public void
177 logMsg( String msg )
178 {
179 this.checkLogOpen();
180
181 if ( this.open )
182 {
183 this.stream.println( msg );
184 if ( this.autoFlush && this.open )
185 this.stream.flush();
186 }
187
188 if ( this.echo )
189 {
190 System.out.println( msg );
191 }
192 }
193
194 static public void
195 defLogMsgStdout( String msg )
196 {
197 FileLog.checkDefaultLogger();
198 if ( FileLog.defaultLogger != null )
199 FileLog.defaultLogger.logMsgStdout( msg );
200 }
201
202 public void
203 logMsgStdout( String msg )
204 {
205 this.checkLogOpen();
206
207 if ( this.open )
208 {
209 this.stream.println( msg );
210 if ( this.autoFlush && this.open )
211 this.stream.flush();
212 }
213
214 System.out.println( msg );
215 }
216
217 static public void
218 defLogMsgStderr( String msg )
219 {
220 FileLog.checkDefaultLogger();
221 if ( FileLog.defaultLogger != null )
222 FileLog.defaultLogger.logMsgStderr( msg );
223 }
224
225 public void
226 logMsgStderr( String msg )
227 {
228 this.checkLogOpen();
229
230 if ( this.open )
231 {
232 this.stream.println( msg );
233 if ( this.autoFlush && this.open )
234 this.stream.flush();
235 }
236
237 System.err.println( msg );
238 }
239 }
240
241
242
243 |
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