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1
8 package com.mountainminds.eclemma.internal.core;
9
10 import java.io.File  ;
11 import java.io.UnsupportedEncodingException ;
12 import java.lang.ref.PhantomReference ;
13 import java.lang.ref.ReferenceQueue ;
14 import java.security.MessageDigest ;
15 import java.security.NoSuchAlgorithmException ;
16 import java.util.HashSet ;
17 import java.util.Set ;
18
19 import org.eclipse.core.runtime.CoreException;
20 import org.eclipse.core.runtime.IPath;
21
22 import com.mountainminds.eclemma.core.EclEmmaStatus;
23
24
30 public class StateFiles {
31
32 private static final String LAUNCHDATA_FOLDER = ".launch/";
34 private static final String INSTRDATA_FOLDER = ".instr/";
36 private static final String IMPORTDATA_FOLDER = ".import/";
38 private static final String SOURCE_FOLDER = ".src/";
40 private static final ReferenceQueue CLEANUPQUEUE = new ReferenceQueue ();
41
42 private static final Set CLEANUPFILES = new HashSet ();
43
44
45 private final IPath stateLocation;
46
47 public StateFiles(IPath stateLocation) {
48 this.stateLocation = stateLocation;
49 this.stateLocation.toFile().mkdirs();
50 getLaunchDataFolder().toFile().mkdirs();
51 getInstrDataFolder().toFile().mkdirs();
52 getSourceDataFolder().toFile().mkdirs();
53 getImportDataFolder().toFile().mkdirs();
54 }
55
56 public void deleteTemporaryFiles() {
57 deleteFiles(getLaunchDataFolder().toFile(), false);
58 deleteFiles(getInstrDataFolder().toFile(), false);
59 deleteFiles(getSourceDataFolder().toFile(), false);
60 deleteFiles(getImportDataFolder().toFile(), false);
61 }
62
63 private static void deleteFiles(File file, boolean deleteparent) {
64 if (file.isDirectory()) {
65 File [] files = file.listFiles();
66 for (int i = 0; files != null && i < files.length; i++) {
67 deleteFiles(files[i], true);
68 }
69 }
70 if (deleteparent) file.delete();
71 }
72
73 public IPath getLaunchDataFolder() {
74 return stateLocation.append(LAUNCHDATA_FOLDER);
75 }
76
77 private IPath getInstrDataFolder() {
78 return stateLocation.append(INSTRDATA_FOLDER);
79 }
80
81 public IPath getInstrDataFolder(IPath location) throws CoreException {
82 return getInstrDataFolder().append(getInternalId(location, false));
83 }
84
85 private IPath getSourceDataFolder() {
86 return stateLocation.append(SOURCE_FOLDER);
87 }
88
89 public IPath getSourceFolder(IPath location) throws CoreException {
90 return getSourceDataFolder().append(getInternalId(location, true));
91 }
92
93 private IPath getImportDataFolder() {
94 return stateLocation.append(IMPORTDATA_FOLDER);
95 }
96
97 public IPath getImportSessionFile(IPath original) throws CoreException {
98 IPath p = getImportDataFolder().append(getInternalId(original, true));
99 registerForCleanup(p);
100 return p;
101 }
102
103 private static String getInternalId(IPath location, boolean withtimestamp) throws CoreException {
104 long timestamp = 0;
105 if (withtimestamp) {
106 File f = location.toFile();
107 if (f.exists()) {
108 timestamp = f.lastModified();
109 }
110 }
111 StringBuffer sb = new StringBuffer ();
112 try {
113 MessageDigest md = MessageDigest.getInstance("MD5"); md.update(location.toString().getBytes("UTF8")); md.update(Long.toHexString(timestamp).getBytes("UTF8")); byte[] sig = md.digest();
117 for (int i = 0; i < sig.length; i++) {
118 sb.append(Character.forDigit((sig[i] >> 4) & 0xf, 0x10));
119 sb.append(Character.forDigit(sig[i] & 0xf, 0x10));
120 }
121 } catch (NoSuchAlgorithmException e) {
122 throw new CoreException(EclEmmaStatus.ID_CREATION_ERROR.getStatus(e));
123 } catch (UnsupportedEncodingException e) {
124 throw new CoreException(EclEmmaStatus.ID_CREATION_ERROR.getStatus(e));
125 }
126 return sb.toString();
127 }
128
129
137 public void registerForCleanup(IPath file) {
138 cleanupObsoleteFiles();
139 CLEANUPFILES.add(new CleanupFile(file));
140 }
141
142 private void cleanupObsoleteFiles() {
143 while (true) {
144 CleanupFile f = (CleanupFile) CLEANUPQUEUE.poll();
145 if (f == null) {
146 break;
147 }
148 CLEANUPFILES.remove(f);
149 f.delete();
150 }
151 }
152
153 private static class CleanupFile extends PhantomReference {
154
155 private final File file;
156
157 public CleanupFile(IPath path) {
158 super(path, CLEANUPQUEUE);
159 this.file = path.toFile();
160 }
161
162 public void delete() {
163 deleteFiles(file, true);
164 clear();
165 }
166
167 }
168
169 }
170 |
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