/*--------------------------------------------------------------------------*/
private InputStream openInputStream(String name, NativeLibraryClient client) throws Exception {
Class clientClass = client.getClass();
// ----------------------------------------------------
// try to open an input stream, assuming the library
// is located with the client
// ----------------------------------------------------
InputStream input = clientClass.getResourceAsStream(name + extension);
// ----------------------------------------------------
// if this is not successful, try to load from the
// location where all native libraries are supposed
// to be located.
// ----------------------------------------------------
if (input == null) {
input = clientClass.getResourceAsStream('/' + nativeDirectory + '/' + name + extension);
}
// ----------------------------------------------------
// if this fails as well, throw an exception
// ----------------------------------------------------
if (input == null) {
throw (new Exception("can't locate library"));
} else {
return (input);
}
}
/*--------------------------------------------------------------------------*/
private String getNativePath(String name, NativeLibraryClient client) {
ProtectionDomain domain = client.getClass().getProtectionDomain();
CodeSource codeSource = domain.getCodeSource();
URL url = codeSource.getLocation();
String path = url.getPath();
path = path + nativeDirectory + '/' + name + extension;
path = path.replace('/', File.separatorChar);
// Revise the URI-path to a file path; needed in uninstaller because it
// writes the jar contents into a sandbox; may be with blanks in the
// path.
path = revisePath(path);
return (path);
}
/*--------------------------------------------------------------------------*/
public synchronized void loadLibrary(String name, NativeLibraryClient client) throws Exception {
String libraryName = strip(name);
String tempFileName = "";
// ----------------------------------------------------
// Return if the library is already loaded
// ----------------------------------------------------
if (loaded(libraryName)) {
return;
}
if (System.getProperty("DLL_PATH") != null) {
String path = System.getProperty("DLL_PATH") + "/" + name + extension;
path = path.replace('/', File.separatorChar);
Debug.trace("Try to load library " + path);
System.load(path);
return;
}
// ----------------------------------------------------
// First try a straight load
// ----------------------------------------------------
try {
System.loadLibrary(libraryName);
return;
} catch (UnsatisfiedLinkError exception) {
} catch (SecurityException exception) {
}
// ----------------------------------------------------
// Next, try to get the protocol for loading the resource.
// ----------------------------------------------------
Class clientClass = client.getClass();
String resourceName = clientClass.getName();
int nameStart = resourceName.lastIndexOf('.') + 1;
resourceName = resourceName.substring(nameStart, resourceName.length()) + CLIENT_EXTENSION;
URL url = clientClass.getResource(resourceName);
if (url == null) {
throw (new Exception("can't identify load protocol for " + libraryName + extension));
}
String protocol = url.getProtocol();
// ----------------------------------------------------
// If it's a local file, load it from the current location
// ----------------------------------------------------
if (protocol.equalsIgnoreCase(FILE_PROTOCOL)) {
try {
System.load(getClientPath(name, url));
} catch (Throwable exception) {
try {
System.load(getNativePath(name, client));
} catch (Throwable exception2) {
throw (new Exception("error loading library"));
}
}
}
// ----------------------------------------------------
// If it is in a *.jar file, extract it to 'java.io.tmpdir'
// ----------------------------------------------------
else if (protocol.equalsIgnoreCase(JAR_PROTOCOL)) {
tempFileName = getTempFileName(libraryName);
try {
extractFromJar(libraryName, tempFileName, client);
clients.add(client);
temporaryFileNames.add(tempFileName);
libraryNames.add(
tempFileName.substring(
(tempFileName.lastIndexOf(File.separatorChar) + 1), tempFileName.length()));
// --------------------------------------------------
// Try loading the temporary file from 'java.io.tmpdir'.
// --------------------------------------------------
System.load(tempFileName);
} catch (Throwable exception) {
throw (new Exception("error loading library\n" + exception.toString()));
}
}
}
