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1
11 package org.eclipse.osgi.framework.debug;
12
13 import java.io.*;
14 import java.net.MalformedURLException  ;
15 import java.net.URL ;
16 import java.util.Iterator ;
17 import java.util.Properties ;
18
19 public class DebugOptions implements org.eclipse.osgi.service.debug.DebugOptions {
20 Properties options = null;
21
22 private static DebugOptions singleton = null;
23 private static boolean debugEnabled = true;
24 private static final String OPTIONS = ".options";
26 public static DebugOptions getDefault() {
27 if (singleton == null && debugEnabled) {
28 DebugOptions result = new DebugOptions();
29 debugEnabled = result.isDebugEnabled();
30 if (debugEnabled)
31 singleton = result;
32 }
33 return singleton;
34 }
35
36 public static URL buildURL(String spec, boolean trailingSlash) {
37 if (spec == null)
38 return null;
39 boolean isFile = spec.startsWith("file:"); try {
41 if (isFile)
42 return adjustTrailingSlash(new File(spec.substring(5)).toURL(), trailingSlash);
43 else
44 return new URL (spec);
45 } catch (MalformedURLException e) {
46 if (isFile)
49 return null;
50 try {
51 return adjustTrailingSlash(new File(spec).toURL(), trailingSlash);
52 } catch (MalformedURLException e1) {
53 return null;
54 }
55 }
56 }
57
58 private static URL adjustTrailingSlash(URL url, boolean trailingSlash) throws MalformedURLException {
59 String file = url.getFile();
60 if (trailingSlash == (file.endsWith("/"))) return url;
62 file = trailingSlash ? file + "/" : file.substring(0, file.length() - 1); return new URL (url.getProtocol(), url.getHost(), file);
64 }
65
66 private DebugOptions() {
67 super();
68 loadOptions();
69 }
70
71 public boolean getBooleanOption(String option, boolean defaultValue) {
72 String optionValue = getOption(option);
73 return (optionValue != null && optionValue.equalsIgnoreCase("true")) || defaultValue; }
75
76 public String getOption(String option) {
77 return options != null ? options.getProperty(option) : null;
78 }
79
80 public String getOption(String option, String defaultValue) {
81 return options != null ? options.getProperty(option, defaultValue) : defaultValue;
82 }
83
84 public int getIntegerOption(String option, int defaultValue) {
85 String value = getOption(option);
86 try {
87 return value == null ? defaultValue : Integer.parseInt(value);
88 } catch (NumberFormatException e) {
89 return defaultValue;
90 }
91 }
92
93 public void setOption(String option, String value) {
94 if (options != null)
95 options.put(option, value.trim());
96 }
97
98 public boolean isDebugEnabled() {
99 return options != null;
100 }
101
102 private void loadOptions() {
103 String debugOptionsFilename = System.getProperty("osgi.debug"); if (debugOptionsFilename == null)
108 return;
109 options = new Properties ();
110 URL optionsFile;
111 if (debugOptionsFilename.length() == 0) {
112 String userDir = System.getProperty("user.dir").replace(File.separatorChar, '/'); if (!userDir.endsWith("/")) userDir += "/"; debugOptionsFilename = new File(userDir, OPTIONS).toString();
119 }
120 optionsFile = buildURL(debugOptionsFilename, false);
121 if (optionsFile == null) {
122 System.out.println("Unable to construct URL for options file: " + debugOptionsFilename); return;
124 }
125 System.out.print("Debug options:\n " + optionsFile.toExternalForm()); try {
127 InputStream input = optionsFile.openStream();
128 try {
129 options.load(input);
130 System.out.println(" loaded"); } finally {
132 input.close();
133 }
134 } catch (FileNotFoundException e) {
135 System.out.println(" not found"); } catch (IOException e) {
137 System.out.println(" did not parse"); e.printStackTrace(System.out);
139 }
140 for (Iterator i = options.keySet().iterator(); i.hasNext();) {
142 Object key = i.next();
143 options.put(key, ((String ) options.get(key)).trim());
144 }
145 if (options.size() == 0)
146 options = null;
147 }
148 } |
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