/**
* Returns a stream to a pack, depending on the installation kind.
*
* @param n The pack number.
* @return The stream.
* @exception Exception Description of the Exception
*/
private InputStream getPackAsStream(int n) throws Exception {
InputStream in = null;
if (idata.kind.equalsIgnoreCase("standard")
|| idata.kind.equalsIgnoreCase("standard-kunststoff"))
in = getClass().getResourceAsStream("/packs/pack" + n);
else if (idata.kind.equalsIgnoreCase("web") || idata.kind.equalsIgnoreCase("web-kunststoff")) {
URL url = new URL("jar:" + jarLocation + "!/packs/pack" + n);
JarURLConnection jarConnection = (JarURLConnection) url.openConnection();
in = jarConnection.getInputStream();
}
return in;
}
/**
* Enumerates the resouces in a give package name. This works even if the resources are loaded
* from a jar file!
*
* <p>Adapted from code by mikewse on the java.sun.com message boards.
* http://forum.java.sun.com/thread.jsp?forum=22&thread=30984
*
* @param packageName The package to enumerate
* @return A Set of Strings for each resouce in the package.
*/
public static Set getResoucesInPackage(String packageName) throws IOException {
String localPackageName;
if (packageName.endsWith("/")) {
localPackageName = packageName;
} else {
localPackageName = packageName + '/';
}
Enumeration dirEnum = ClassLoader.getSystemResources(localPackageName);
Set names = new HashSet();
// Loop CLASSPATH directories
while (dirEnum.hasMoreElements()) {
URL resUrl = (URL) dirEnum.nextElement();
// Pointing to filesystem directory
if (resUrl.getProtocol().equals("file")) {
File dir = new File(resUrl.getFile());
File[] files = dir.listFiles();
if (files != null) {
for (int i = 0; i < files.length; i++) {
File file = files[i];
if (file.isDirectory()) continue;
names.add(localPackageName + file.getName());
}
}
// Pointing to Jar file
} else if (resUrl.getProtocol().equals("jar")) {
JarURLConnection jconn = (JarURLConnection) resUrl.openConnection();
JarFile jfile = jconn.getJarFile();
Enumeration entryEnum = jfile.entries();
while (entryEnum.hasMoreElements()) {
JarEntry entry = (JarEntry) entryEnum.nextElement();
String entryName = entry.getName();
// Exclude our own directory
if (entryName.equals(localPackageName)) continue;
String parentDirName = entryName.substring(0, entryName.lastIndexOf('/') + 1);
if (!parentDirName.equals(localPackageName)) continue;
names.add(entryName);
}
} else {
// Invalid classpath entry
}
}
return names;
}
