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11 package org.eclipse.core.internal.runtime;
12
13 import java.io.File  ;
14 import java.io.IOException ;
15 import java.net.URL ;
16 import org.eclipse.core.runtime.*;
17 import org.eclipse.osgi.framework.log.FrameworkLog;
18 import org.eclipse.osgi.service.datalocation.Location;
19 import org.eclipse.osgi.service.debug.DebugOptions;
20 import org.eclipse.osgi.util.NLS;
21 import org.osgi.framework.Bundle;
22
23
26 public class DataArea {
27 private static final String OPTION_DEBUG = "org.eclipse.equinox.common/debug";
29 static final String F_META_AREA = ".metadata"; static final String F_PLUGIN_DATA = ".plugins"; static final String F_LOG = ".log";
35 static final String PREFERENCES_FILE_NAME = "pref_store.ini";
37 private IPath location; private boolean initialized = false;
39
40 protected void assertLocationInitialized() throws IllegalStateException {
41 if (location != null && initialized)
42 return;
43 Activator activator = Activator.getDefault();
44 if (activator == null)
45 throw new IllegalStateException (CommonMessages.activator_not_available);
46 Location service = activator.getInstanceLocation();
47 if (service == null)
48 throw new IllegalStateException (CommonMessages.meta_noDataModeSpecified);
49 try {
50 URL url = service.getURL();
51 if (url == null)
52 throw new IllegalStateException (CommonMessages.meta_instanceDataUnspecified);
53 location = new Path(new File (url.getFile()).toString());
57 initializeLocation();
58 } catch (CoreException e) {
59 throw new IllegalStateException (e.getMessage());
60 }
61 }
62
63 public IPath getMetadataLocation() throws IllegalStateException {
64 assertLocationInitialized();
65 return location.append(F_META_AREA);
66 }
67
68 public IPath getInstanceDataLocation() throws IllegalStateException {
69 assertLocationInitialized();
70 return location;
71 }
72
73 public IPath getLogLocation() throws IllegalStateException {
74 FrameworkLog log = Activator.getDefault().getFrameworkLog();
75 if (log == null)
76 return null;
77 return new Path(log.getFile().getAbsolutePath());
78 }
79
80
83 public IPath getStateLocation(Bundle bundle) throws IllegalStateException {
84 assertLocationInitialized();
85 return getStateLocation(bundle.getSymbolicName());
86 }
87
88 public IPath getStateLocation(String bundleName) throws IllegalStateException {
89 assertLocationInitialized();
90 return getMetadataLocation().append(F_PLUGIN_DATA).append(bundleName);
91 }
92
93 public IPath getPreferenceLocation(String bundleName, boolean create) throws IllegalStateException {
94 IPath result = getStateLocation(bundleName);
95 if (create)
96 result.toFile().mkdirs();
97 return result.append(PREFERENCES_FILE_NAME);
98 }
99
100 private void initializeLocation() throws CoreException {
101 if (location.toFile().exists()) {
103 if (!location.toFile().isDirectory()) {
104 String message = NLS.bind(CommonMessages.meta_notDir, location);
105 throw new CoreException(new Status(IStatus.ERROR, IRuntimeConstants.PI_RUNTIME, IRuntimeConstants.FAILED_WRITE_METADATA, message, null));
106 }
107 }
108 if (location.getDevice() == null)
110 location = new Path(location.toFile().getAbsolutePath());
111 createLocation();
112 initialized = true;
113 }
114
115 private void createLocation() throws CoreException {
116 File file = location.append(F_META_AREA).toFile();
118 try {
119 file.mkdirs();
120 } catch (Exception e) {
121 String message = NLS.bind(CommonMessages.meta_couldNotCreate, file.getAbsolutePath());
122 throw new CoreException(new Status(IStatus.ERROR, IRuntimeConstants.PI_RUNTIME, IRuntimeConstants.FAILED_WRITE_METADATA, message, e));
123 }
124 if (!file.canWrite()) {
125 String message = NLS.bind(CommonMessages.meta_readonly, file.getAbsolutePath());
126 throw new CoreException(new Status(IStatus.ERROR, IRuntimeConstants.PI_RUNTIME, IRuntimeConstants.FAILED_WRITE_METADATA, message, null));
127 }
128 IPath path = location.append(F_META_AREA).append(F_LOG);
130 try {
131 Activator activator = Activator.getDefault();
132 if (activator != null) {
133 FrameworkLog log = activator.getFrameworkLog();
134 if (log != null)
135 log.setFile(path.toFile(), true);
136 else if (debug())
137 System.out.println("ERROR: Unable to acquire log service. Application will proceed, but logging will be disabled.");
138 }
139 } catch (IOException e) {
140 e.printStackTrace();
141 }
142 }
143
144 private boolean debug() {
145 Activator activator = Activator.getDefault();
146 if (activator == null)
147 return false;
148 DebugOptions debugOptions = activator.getDebugOptions();
149 if (debugOptions == null)
150 return false;
151 return debugOptions.getBooleanOption(OPTION_DEBUG, false);
152 }
153 }
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