Source Code Cross Referenced for DebugFile.java in  » Groupware » hipergate » com » knowgate » debug » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Groupware » hipergate » com.knowgate.debug 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:          Copyright (C) 2003  Know Gate S.L. All rights reserved.
003:                              C/Oña, 107 1º2 28050 Madrid (Spain)
004:
005:          Redistribution and use in source and binary forms, with or without
006:          modification, are permitted provided that the following conditions
007:          are met:
008:
009:          1. Redistributions of source code must retain the above copyright
010:             notice, this list of conditions and the following disclaimer.
011:
012:          2. The end-user documentation included with the redistribution,
013:             if any, must include the following acknowledgment:
014:             "This product includes software parts from hipergate
015:             (http://www.hipergate.org/)."
016:             Alternately, this acknowledgment may appear in the software itself,
017:             if and wherever such third-party acknowledgments normally appear.
018:
019:          3. The name hipergate must not be used to endorse or promote products
020:             derived from this software without prior written permission.
021:             Products derived from this software may not be called hipergate,
022:             nor may hipergate appear in their name, without prior written
023:             permission.
024:
025:          This library is distributed in the hope that it will be useful,
026:          but WITHOUT ANY WARRANTY; without even the implied warranty of
027:          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
028:
029:          You should have received a copy of hipergate License with this code;
030:          if not, visit http://www.hipergate.org or mail to info@hipergate.org
031:         */
032:
033:        package com.knowgate.debug;
034:
035:        import java.util.Date;
036:
037:        import java.io.FileWriter;
038:        import java.io.IOException;
039:
040:        /**
041:         * <p>Write execution traces to a flat text file</p>
042:         * Traces are written to javatrc.txt file on the especified directory.<br>
043:         * By default /tmp/ on Unix and C:\WINNT\TEMP or C:\WINDOWS\TEMP on Windows.
044:         * @author Sergio Montoro Ten
045:         * @version 2.2
046:         */
047:        public final class DebugFile {
048:
049:            private static final String DEFAULT_TMP_UNIX = "/tmp/";
050:            private static final String DEFAULT_TMP_WIN32 = "C:\\";
051:
052:            private static String sFilePath = null;
053:
054:            private static String chomp(String sSource, char cEndsWith) {
055:                return sSource.charAt(sSource.length() - 1) == cEndsWith ? sSource
056:                        : sSource + cEndsWith;
057:            } // chomp
058:
059:            /**
060:             * Set debug file path
061:             * @param sDebugFilePath Full path to file where debug traces will be written including directory and file name
062:             */
063:            public static void setFile(String sDebugFilePath) {
064:                sFilePath = sDebugFilePath;
065:            }
066:
067:            /**
068:             * Get debug file path
069:             * @return If setFile() has not been called this method returns C:\\javatrc.txt
070:             * on Windows environments or /tmp/javatrc.txt on UNIX environments
071:             * @since v2.2 the behaviour of this method has changed and now reads Java
072:             * environment variable hipergate.debugdir for getting the directory where
073:             * javatrc.txt file is generated
074:             */
075:            public static String getFile() {
076:                if (null == sFilePath) {
077:                    if (System.getProperty("os.name").startsWith("Windows"))
078:                        sFilePath = chomp(System.getProperty(
079:                                "hipergate.debugdir", DEFAULT_TMP_WIN32), '\\')
080:                                + "javatrc.txt";
081:                    else
082:                        sFilePath = chomp(System.getProperty(
083:                                "hipergate.debugdir", DEFAULT_TMP_UNIX), '/')
084:                                + "javatrc.txt";
085:                }
086:                return sFilePath;
087:            }
088:
089:            /**
090:             * Increment identation level
091:             */
092:            public static void incIdent() {
093:                sIdent += "  ";
094:            }
095:
096:            /**
097:             * Decrement identation level
098:             */
099:
100:            public static void decIdent() {
101:                if (sIdent.length() > 2)
102:                    sIdent = sIdent.substring(0, sIdent.length() - 2);
103:                else
104:                    sIdent = "";
105:            }
106:
107:            /**
108:             * <p>Write trace</p>
109:             * Traces are written to /tmp/javatrc.txt on UNIX systems or C:\WINNT\javatrc.txt on Windows
110:             */
111:            public static void write(char[] str) {
112:                FileWriter oDebugWriter;
113:
114:                try {
115:
116:                    // Volcar las trazas de salida a una ubicación por defecto
117:                    // según el sistema operativo sea Windows o UNIX
118:
119:                    switch (dumpTo) {
120:                    case DUMP_TO_FILE:
121:                        oDebugWriter = new FileWriter(getFile(), true);
122:                        oDebugWriter.write(str);
123:                        oDebugWriter.close();
124:                        break;
125:                    case DUMP_TO_STDOUT:
126:                        System.out.print(str);
127:                        break;
128:                    }
129:                } catch (IOException e) {
130:                    System.out.print(str);
131:                }
132:            }
133:
134:            /**
135:             * <p>Write trace</p>
136:             * Traces are written to /tmp/javatrc.txt on UNIX systems or C:\WINNT\javatrc.txt on Windows
137:             */
138:            public static void write(String str) {
139:                FileWriter oDebugWriter;
140:
141:                try {
142:
143:                    // Volcar las trazas de salida a una ubicación por defecto
144:                    // según el sistema operativo sea Windows o UNIX
145:
146:                    switch (dumpTo) {
147:                    case DUMP_TO_FILE:
148:                        oDebugWriter = new FileWriter(getFile(), true);
149:                        oDebugWriter.write(str);
150:                        oDebugWriter.close();
151:                        break;
152:                    case DUMP_TO_STDOUT:
153:                        System.out.print(str);
154:                        break;
155:                    }
156:                } catch (IOException e) {
157:                    System.out.print(str);
158:                }
159:            }
160:
161:            /**
162:             * Write trace and append line feed
163:             * @param str
164:             */
165:            public static void writeln(String str) {
166:                FileWriter oDebugWriter;
167:                Date dt = new Date(System.currentTimeMillis());
168:
169:                try {
170:
171:                    // Volcar las trazas de salida a una ubicación por defecto
172:                    // según el sistema operativo sea Windows o UNIX
173:
174:                    switch (dumpTo) {
175:                    case DUMP_TO_FILE:
176:                        oDebugWriter = new FileWriter(getFile(), true);
177:                        oDebugWriter.write(dt.toString() + " " + sIdent + str
178:                                + "\n");
179:                        oDebugWriter.close();
180:                        break;
181:                    case DUMP_TO_STDOUT:
182:                        System.out.print(dt.toString() + sIdent + str + "\n");
183:                        break;
184:                    }
185:                } catch (IOException e) {
186:                    System.out.print(dt.toString() + sIdent + str + "\n");
187:                }
188:            }
189:
190:            /**
191:             * Write trace and append line feed
192:             * @param str
193:             */
194:            public static void writeln(char[] str) {
195:                FileWriter oDebugWriter;
196:                Date dt = new Date(System.currentTimeMillis());
197:
198:                try {
199:
200:                    // Volcar las trazas de salida a una ubicación por defecto
201:                    // según el sistema operativo sea Windows o UNIX
202:
203:                    switch (dumpTo) {
204:                    case DUMP_TO_FILE:
205:                        oDebugWriter = new FileWriter(getFile(), true);
206:                        oDebugWriter.write(dt.toString() + " " + sIdent + str
207:                                + "\n");
208:                        oDebugWriter.close();
209:                        break;
210:                    case DUMP_TO_STDOUT:
211:                        System.out.print(dt.toString() + sIdent + str + "\n");
212:                        break;
213:                    }
214:                } catch (IOException e) {
215:                    System.out.print(dt.toString() + sIdent + str + "\n");
216:                }
217:            } // write
218:
219:            /**
220:             * Write stack trace for an exception to debug file
221:             * @param t Throwable
222:             */
223:            public static void writeStackTrace(Throwable t) {
224:                try {
225:                    DebugFile.write(StackTraceUtil.getStackTrace(t));
226:                } catch (Exception ignore) {
227:                }
228:            }
229:
230:            /**
231:             * This method is just an alias for DebugFile.writeln
232:             * @param str
233:             */
234:            public void debug(String str) {
235:                DebugFile.writeln(str);
236:            }
237:
238:            public void debug(String str, Exception xcpt) {
239:                DebugFile.writeln(str);
240:                new ErrorHandler(xcpt);
241:            }
242:
243:            public static void envinfo()
244:                    throws java.security.AccessControlException {
245:                DebugFile.writeln(System.getProperty("java.vendor")
246:                        + " Runtime Environment "
247:                        + System.getProperty("java.version"));
248:                DebugFile.writeln(System.getProperty("java.vm.vendor") + " "
249:                        + System.getProperty("java.vm.name") + " "
250:                        + System.getProperty("java.vm.version"));
251:                DebugFile.writeln(System.getProperty("os.name") + " "
252:                        + System.getProperty("os.version") + " "
253:                        + System.getProperty("os.arch"));
254:                DebugFile.writeln("JVM encoding "
255:                        + System.getProperty("file.encoding "));
256:
257:                /*
258:                WINDOWS MILLENIUM
259:                -----------------
260:                java.vendor=Sun Microsystems Inc.
261:                java.version=1.3.1
262:                java.vm.vendor=Sun Microsystems Inc.
263:                java.vm.name=Java HotSpot(TM) Client VM
264:                java.vm.version=1.3.1-b24
265:                os.name=Windows Me
266:                os.version=4.90
267:                os.arch=x86
268:
269:                ALPHA
270:                -----
271:                java.vendor=Compaq Computer Corp.
272:                java.version=1.2.2-8
273:                java.vm.vendor=Compaq Computer Corp.
274:                java.vm.name=Classic VM
275:                java.vm.version=1.2.2-8
276:                os.name=OSF1
277:                os.version=V4.0
278:                os.arch=alpha
279:
280:                JSERVER
281:                -------
282:                java.vendor=Oracle Corporation
283:                java.version=1.2.1
284:                java.vm.vendor=Oracle Corporation
285:                java.vm.name=JServer VM
286:                java.vm.version=1.2.1
287:                os.name=Solaris
288:                os.version=V4.0
289:                os.arch=alpha
290:                 */
291:            }
292:
293:            public static void main(String[] argv) {
294:                System.out.println("Debug mode "
295:                        + (trace ? "enabled" : "disabled"));
296:                System.out.println("Debug file " + getFile());
297:                System.out.println(System.getProperty("java.vendor")
298:                        + " Runtime Environment "
299:                        + System.getProperty("java.version"));
300:                System.out.println(System.getProperty("java.vm.vendor") + " "
301:                        + System.getProperty("java.vm.name") + " "
302:                        + System.getProperty("java.vm.version"));
303:                System.out.println(System.getProperty("os.name") + " "
304:                        + System.getProperty("os.version") + " "
305:                        + System.getProperty("os.arch"));
306:                System.out.println("JVM encoding "
307:                        + System.getProperty("file.encoding "));
308:            }
309:
310:            // Espacios de identación en cada línea de traza
311:            private static String sIdent = "";
312:
313:            // **********************************************************
314:            // Esta variable controla si se volcarán trazas o no
315:
316:            public static final short DUMP_TO_FILE = (short) 1;
317:            public static final short DUMP_TO_STDOUT = (short) 2;
318:
319:            public static short dumpTo = DUMP_TO_FILE;
320:
321:            /**
322:             * Activate/Deactive trace output
323:             */
324:            public static final boolean trace = true;
325:        }
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