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16 package org.argeo.slc.osgi;
17
18 import java.io.File;
19 import java.util.HashSet;
20 import java.util.Properties;
21 import java.util.Set;
22 import java.util.jar.JarFile;
23 import java.util.jar.Manifest;
24
25 import org.apache.commons.io.IOUtils;
26 import org.apache.commons.logging.Log;
27 import org.apache.commons.logging.LogFactory;
28 import org.osgi.framework.Constants;
29
30
31 public class FileSystemBundleRegister implements BundleRegister {
32 private final static Log log = LogFactory
33 .getLog(FileSystemBundleRegister.class);
34 private Properties packagesBundles = null;
35
36 public String bundleProvidingPackage(String pkg, String version) {
37 if (packagesBundles == null)
38 return null;
39 return packagesBundles.getProperty(pkg);
40 }
41
42 protected void scan(File baseDirectory) {
43 long begin = System.currentTimeMillis();
44 int bundleCount = 0;
45 int packageCount = 0;
46
47 packagesBundles = new Properties();
48
49 File[] files = baseDirectory.listFiles();
50 for (File file : files) {
51 if (file.isDirectory()) {
52
53 } else {
54 JarFile jarFile = null;
55 try {
56 jarFile = new JarFile(file);
57 Manifest manifest = jarFile.getManifest();
58 String symbolicName = manifest.getMainAttributes()
59 .getValue(Constants.BUNDLE_SYMBOLICNAME);
60 String exportPackage = manifest.getMainAttributes()
61 .getValue(Constants.EXPORT_PACKAGE);
62
63
64 Set<String> exportedPackages = exportPackageToPackageNames(exportPackage);
65
66 for (String exportedPackage : exportedPackages) {
67 packagesBundles.put(exportedPackage, symbolicName);
68 packageCount++;
69 if (log.isTraceEnabled())
70 log.trace("Register " + exportedPackage + "="
71 + symbolicName);
72 }
73 bundleCount++;
74 } catch (Exception e) {
75 log.warn("Cannot scan " + file, e);
76 if (log.isTraceEnabled())
77 e.printStackTrace();
78 } finally {
79 IOUtils.closeQuietly(jarFile);
80 }
81 }
82 }
83 if (log.isDebugEnabled())
84 log.debug("Scanned " + bundleCount + " bundles with "
85 + packageCount + " packages in "
86 + (System.currentTimeMillis() - begin) + " ms");
87 }
88
89 protected Set<String> exportPackageToPackageNames(String exportPackage) {
90 Set<String> exportedPackages = new HashSet<String>();
91 if (exportPackage == null)
92 return exportedPackages;
93 char[] arr = exportPackage.toCharArray();
94
95 StringBuffer currentPkg = new StringBuffer("");
96 boolean skip = false;
97 boolean inQuote = false;
98 for (char c : arr) {
99 if (c == ' ' || c == '\n') {
100
101 } else if (c == ';') {
102 if (!skip)
103 skip = true;
104 } else if (c == ',') {
105 if (skip && !inQuote) {
106 skip = false;
107
108 exportedPackages.add(currentPkg.toString());
109 currentPkg = new StringBuffer("");
110 }
111 } else if (c == '\"') {
112 inQuote = inQuote ? false : true;
113 } else {
114 if (!skip)
115 currentPkg.append(c);
116 }
117 }
118
119 return exportedPackages;
120 }
121
122 public static void main(String[] args) {
123 FileSystemBundleRegister fsbr = new FileSystemBundleRegister();
124 fsbr.scan(new File(
125 "/home/mbaudier/dev/src/slc/dist/org.argeo.slc.sdk/target/lib"));
126
127 }
128 }