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1
22 package org.aspectj.debugger.base;
23
24 import java.io.*;
25 import java.util.*;
26 import java.text.*;
27
28 public class ErrorLogger extends AbstractErrorLogger {
29
30 public ErrorLogger(Debugger debugger) {
31 super(debugger);
32 }
33
34 public ErrorLogger(Adapter adapter) {
35 super(adapter);
36 }
37
38 public ErrorLogger() {
39 super(new Adapter());
40 }
41
42 public static class Adapter implements ErrorLoggable {
43 public Options getOptions() {
44 return new Options();
45 }
46 public void fatal(String  str) {
47 System.err.println(str);
48 System.exit(-1);
49 }
50 }
51
52 public static void main(String [] args) {
53 AbstractErrorLogger logger = new AbstractErrorLogger(
54 new ErrorLoggable() {
55 public Options getOptions() {
56 return new Options();
57 }
58 public void fatal(String str) {
59 System.err.println(str);
60 }
61 }
62 );
63 try {
64 String s = null; s.toString();
65 } catch (Exception e) {
66 logger.log(e);
67 }
68 }
69
70 public static void error(Object o) {
71 AbstractErrorLogger logger = new AbstractErrorLogger(
72 new ErrorLoggable() {
73 public Options getOptions() {
74 return new Options();
75 }
76 public void fatal(String str) {
77 System.err.println(str);
78 }
79 }
80 );
81 if (o instanceof String ) {
82 logger.log((String ) o);
83 } else if (o instanceof Throwable ) {
84 logger.log((Throwable ) o);
85 } else {
86 logger.log(o + "");
87 }
88 }
89 }
90
91 interface ErrorLoggable {
92 public Options getOptions();
93 public void fatal(String str);
94 }
95
96 class AbstractErrorLogger {
97
98 private ErrorLoggable loggable;
99 private String errorFileName = ".ajdbErrors";
100
101 public AbstractErrorLogger(ErrorLoggable loggable) {
102 this.loggable = loggable;
103 Options options = loggable.getOptions();
104 Object userErrorFileName = options.get("errorfile");
105 if (userErrorFileName != null) {
106 errorFileName = userErrorFileName + "";
107 }
108 }
109
110 public void log(Throwable t) {
111 log("No message", t);
112 }
113
114 public void log(String msg) {
115 log(msg, new Throwable (msg));
116 }
117
118 public void log(String msg, Throwable t) {
119 try {
120 PrintWriter printWriter = new PrintWriter(getOutputStream());
121 printWriter.println(heading());
122 printWriter.println(msg);
123 t.printStackTrace(printWriter);
124 printWriter.close();
125 } catch (IOException ioe) {
126 loggable.fatal("Could not open error file for writing.");
127 }
128 }
129
130
131 private String heading() {
132 String date = DateFormat.getDateTimeInstance(DateFormat.FULL,
133 DateFormat.FULL).format(new Date());
134 String username = System.getProperty("user.name");
135 StringBuffer buf = new StringBuffer ();
136 buf.append("# -----------------------------------------------------------\n");
137 buf.append("# Date: " + date + "\n");
138 buf.append("# User: " + username + "\n");
139 buf.append("# -----------------------------------------------------------\n");
140 return buf.toString();
141 }
142
143 public OutputStream getOutputStream() throws IOException {
144 File file = new File(getErrorFileName());
145 boolean append = false;
146 if (file != null && file.exists()) {
147 append = true;
148 }
149 FileOutputStream out = new FileOutputStream(getErrorFileName(), append);
150 return out;
151 }
152
153 public String getErrorFileName() {
154 return errorFileName;
155 }
156
157 public void setErrorFile(String errorFileName) {
158 this.errorFileName = errorFileName;
159 }
160 } |
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