/**
* Copyright 2006-2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.objenesis.strategy;
import java.lang.reflect.Field;
import org.objenesis.ObjenesisException;
/**
* List of constants describing the currently used platform.
*
* @author Henri Tremblay
*/
public final class PlatformDescription {
/** JVM_NAME prefix for JRockit */
public static final String JROCKIT = "BEA";
/** JVM_NAME prefix for GCJ */
public static final String GNU = "GNU libgcj";
/** JVM_NAME prefix for Sun Java HotSpot */
public static final String SUN = "Java HotSpot";
/** JVM_NAME prefix for the OpenJDK */
public static final String OPENJDK = "OpenJDK";
/** JVM_NAME prefix for Aonix PERC */
public static final String PERC = "PERC";
/** JVM_NAME prefix for Dalvik/Android */
public static final String DALVIK = "Dalvik";
/** Java specification version */
public static final String SPECIFICATION_VERSION = System
.getProperty("java.specification.version");
/** JVM version */
public static final String VM_VERSION = System.getProperty("java.runtime.version");
/** JVM version */
public static final String VM_INFO = System.getProperty("java.vm.info");
/** Vendor version */
public static final String VENDOR_VERSION = System.getProperty("java.vm.version");
/** Vendor name */
public static final String VENDOR = System.getProperty("java.vm.vendor");
/** JVM name */
public static final String JVM_NAME = System.getProperty("java.vm.name");
/** Android version. Will be 0 for none android platform */
public static final int ANDROID_VERSION = getAndroidVersion();
/**
* Check if the current JVM is of the type passed in parameter. Normally, this will be a constant
* from this class. We basically do
* <code>System.getProperty("java.vm.name").startWith(name)</code>.
*
* @param name jvm name we are looking for
* @return if it's the requested JVM
*/
public static boolean isThisJVM(String name) {
return JVM_NAME.startsWith(name);
}
private static int getAndroidVersion() {
if(!isThisJVM(DALVIK)) {
return 0;
}
return getAndroidVersion0();
}
private static int getAndroidVersion0() {
Class<?> clazz;
try {
clazz = Class.forName("android.os.Build$VERSION");
}
catch(ClassNotFoundException e) {
throw new ObjenesisException(e);
}
Field field;
try {
field = clazz.getField("SDK_INT");
}
catch(NoSuchFieldException e) {
// Might be a really old API (before 4), go for SDK
return getOldAndroidVersion(clazz);
}
int version;
try {
version = (Integer) field.get(null);
}
catch(IllegalAccessException e) {
throw new RuntimeException(e);
}
return version;
}
private static int getOldAndroidVersion(Class<?> versionClass) {
Field field;
try {
field = versionClass.getField("SDK");
}
catch(NoSuchFieldException e) {
throw new ObjenesisException(e);
}
String version;
try {
version = (String) field.get(null);
}
catch(IllegalAccessException e) {
throw new RuntimeException(e);
}
return Integer.parseInt(version);
}
private PlatformDescription() {
}
}