@Override
public boolean loadLibrary(String libname, boolean ignoreError, ClassLoader cl) {
try {
for (Entry<String, String> nativeEntry : platformNativeIndex.entrySet()) {
if (nativeEntry.getKey().contains(libname)) {
if (log.isDebugEnabled()) {
log.debug(
"Loading mapped entry: [{}] [{}] [{}]",
libname,
nativeEntry.getKey(),
nativeEntry.getValue());
}
File nativeLibCopy =
extractJarEntry(
nativeEntry.getValue(),
nativeEntry.getKey(),
System.getProperty(JAVA_TMP_DIR),
String.format("%s.jni", libname));
System.load(nativeLibCopy.getAbsolutePath());
return true;
}
}
} catch (Exception e) {
log.error("Unable to load native library [{}] - {}", libname, e);
}
if (log.isDebugEnabled()) {
log.debug("No mapped library match for [{}]", libname);
}
return false;
}
/**
* Read the version information from a file with a given file name. The file must be a jar
* manifest file and all its entries are searched for package names and their specification
* version information. All information is collected in a map for later lookup of package names
* and their versions.
*
* @param versionFileName name of the jar file containing version information
*/
public static String readVersionFromFile(String applicationName, String versionFileName) {
try {
FileInputStream fileInput = new FileInputStream(versionFileName);
Manifest manifest = new Manifest();
manifest.read(fileInput);
Map entries = manifest.getEntries();
// Now write out the pre-entry attributes
Iterator entryIterator = entries.entrySet().iterator();
while (entryIterator.hasNext()) {
Map.Entry currentEntry = (Map.Entry) entryIterator.next();
String packageName = currentEntry.getKey().toString();
packageName = normalizePackageName(packageName);
Attributes attributes = (Attributes) currentEntry.getValue();
String packageSpecVersion = attributes.getValue(Attributes.Name.SPECIFICATION_VERSION);
packageSpecVersion = extractVersionInfo(packageSpecVersion);
return packageSpecVersion;
}
} catch (IOException exception) {
exception.printStackTrace();
}
// no version found
return null;
}
