com.highway2urhell.VersionUtils Maven / Gradle / Ivy
package com.highway2urhell;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
public class VersionUtils {
public static final String UNKNOWN_VERSION = "UNKNOWN";
public static final String NO_FRAMEWORK = "NO_FRAMEWORK";
private VersionUtils() {
}
public static String getVersion(String clazzName, String groupId,
String artifactId) {
//check
Class clazz;
try {
clazz = Class.forName(clazzName);
} catch (ClassNotFoundException e1) {
return NO_FRAMEWORK;
}
String version = null;
// try to load from maven properties first
Properties p = new Properties();
InputStream is = null;
try {
is = clazz.getResourceAsStream("/META-INF/maven/" + groupId + "/"
+ artifactId + "/pom.properties");
if (is != null) {
p.load(is);
version = p.getProperty("version", "");
}
} catch (Exception e) {
// ignore
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
// ignore
}
}
}
// fallback to using Java API
if (version == null) {
Package aPackage = clazz.getPackage();
if (aPackage != null) {
version = aPackage.getImplementationVersion();
if (version == null) {
version = aPackage.getSpecificationVersion();
}
}
}
if (version == null) {
// we could not compute the version so use a blank
version = UNKNOWN_VERSION;
}
return version;
}
}