/// <summary>
/// Calls the main static method of a given Java class.
/// NOTE: this method DOES NOT return. It calls System.Environment.Exit.
/// If the Java program calls System.exit, this method will also not return.
/// The .NET program should end with the same error code as the Java program.
/// </summary>
/// <param name="mainClassName">The JNI class name containg the method</param>
/// <param name="arguments">The arguments to pass to the main method.</param>
public static void RunMain(string mainClassName, string[] arguments)
{
JniEnvironment env = JavaVM.SafeFindEnvironment();
JniLocalFrame frame = env.CreateLocalFrame(10);
try
{
JniClass mainClass = JniClass.FindClass(env, mainClassName);
JniMethod method = mainClass.GetStaticMethodId(env, "main", "([Ljava/lang/String;)V");
JniObjectArray javaArguments = JniString.PackStringArray(env, arguments);
JValue[] methodArgs = new JValue[1];
methodArgs[0].AssignObjectValue(javaArguments);
method.CallStaticVoidMethod(env, methodArgs);
}
catch (JniThrowableException ex)
{
System.Console.Out.WriteLine(ex.Throwable.ExtractStackTrace(env));
System.Environment.Exit(1);
throw;
}
catch (Exception ex)
{
System.Console.Out.WriteLine(JniThrowable.ExtractDotNetExceptionMessage(ex));
System.Environment.Exit(1);
throw;
}
finally
{
frame.SafePop();
}
System.Environment.Exit(0);
}
public static Dictionary<string, string> RetrieveAll(JniEnvironment environment)
{
Dictionary<string, string> properties = new Dictionary<string,string>();
JniLocalFrame frame = environment.CreateLocalFrame(1);
try
{
JniClass systemClazz = JniClass.FindClass(environment, "java/lang/System");
string[] keyNames = GetJavaPropertyNames(environment, systemClazz);
JniMethod getPropMid = systemClazz.GetStaticMethodId(environment, "getProperty", "(Ljava/lang/String;)Ljava/lang/String;");
foreach (string keyName in keyNames)
{
JValue[] paramArray = new JValue[1];
paramArray[0].AssignStringValue(environment, keyName);
try
{
string val = getPropMid.CallStaticStringMethod(environment, paramArray);
properties.Add(keyName, val);
}
finally
{
paramArray[0].Free(environment);
}
}
}
finally
{
frame.SafePop();
}
return properties;
}
private static void HookStream(JniEnvironment environment, JniClass nativeClazz,
JavaVMLogTypes hook, string javaHookMethod)
{
JniMethod outMid = nativeClazz.GetStaticMethodId(environment, javaHookMethod, "(I)V");
JValue[] paramArray = new JValue[1];
paramArray[0].AssignIntValue((int)hook);
outMid.CallStaticVoidMethod(environment, paramArray);
}
public JniObject NewObjectCore(JniEnvironment environment, JValue[] arguments, JniConcreteObjectType concreteType)
{
VerifyEnvironment(environment);
// NOTE: OK if "JValue[] arguments" is null
IntPtr result = JniEnvironment.Functions.NewObjectA(environment.Handle, this.DeclaringClass.Handle, this.Handle, arguments);
if (IntPtr.Zero == result)
{
JniThrowable.ThrowCurrentException(environment); // null result means an exception occurred
}
// EXCEPTION CHECK: Do nothing, already checked for exception above.
return JniObject.CreateObjectOfType(environment, result, concreteType);
}
public char CallCharMethod(
JniEnvironment environment,
JniObject jniObject,
JValue[] arguments
)
{
VerifyReturnType(JniType.Char);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
// NOTE: OK if "JValue[] arguments" is null
char result = JniEnvironment.Functions.CallCharMethodA(environment.Handle, jniObject.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
return result;
}
public bool CallBooleanMethod(
JniEnvironment environment,
JniObject jniObject,
JValue[] arguments
)
{
VerifyReturnType(JniType.Boolean);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
// NOTE: OK if "JValue[] arguments" is null
byte result = JniEnvironment.Functions.CallBooleanMethodA(environment.Handle, jniObject.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
return JBooleanConverter.From(result);
}
public void Test()
{
JniEnvironment env = JavaVM.FindEnvironment();
string[] startArgs = { "one", "two", "three", "chicken" };
JniLocalFrame frame = env.CreateLocalFrame(3);
try
{
JniObjectArray array = JniString.PackStringArray(env, startArgs);
JniClass mainClazz = JniClass.FindClass(env, "csjni/test/TestMain");
JniMethod mid = mainClazz.GetStaticMethodId(env, "main", "([Ljava/lang/String;)V");
JValue[] paramArray = new JValue[1];
paramArray[0].AssignObjectValue(array);
mid.CallStaticVoidMethod(env, paramArray);
}
finally
{
frame.SafePop();
}
}
internal static string ExtractStackTrace(JniEnvironment environment, JniThrowable throwableObj)
{
JniLocalFrame frame = environment.CreateLocalFrame(10);
try
{
// construct ByteArrayOutputStream
JniClass baosClazz = JniClass.FindClass(environment, "java/io/ByteArrayOutputStream");
JniConstructor baosCtorMid = baosClazz.GetConstructorId(environment, "()V");
JniMethod baosFlushMid = baosClazz.GetMethodId(environment, "flush", "()V");
JniMethod baosToStringMid = baosClazz.GetMethodId(environment, "toString", "()Ljava/lang/String;");
JniObject baosObj = baosCtorMid.NewObject(environment, null);
// construct PrintStream
JniClass psClazz = JniClass.FindClass(environment, "java/io/PrintStream");
JniConstructor psCtorMid = psClazz.GetConstructorId(environment, "(Ljava/io/OutputStream;)V");
JValue[] ps_paramArray = new JValue[1];
ps_paramArray[0].AssignObjectValue(baosObj);
JniObject psObj = psCtorMid.NewObject(environment, ps_paramArray);
// call printStackTrace
JniClass throwableClazz = throwableObj.GetObjectClass(environment);
JniMethod throwablePSTMid = throwableClazz.GetMethodId(environment, "printStackTrace", "(Ljava/io/PrintStream;)V");
JValue[] t_paramArray = new JValue[1];
t_paramArray[0].AssignObjectValue(psObj);
throwablePSTMid.CallVoidMethod(environment, throwableObj, t_paramArray);
// flush ByteArrayOutputStream & get string
baosFlushMid.CallVoidMethod(environment, baosObj, null);
string stackTrace = baosToStringMid.CallStringMethod(environment, baosObj, null);
return stackTrace;
}
finally
{
frame.SafePop();
}
}
public void CallVoidMethod(
JniEnvironment environment,
JniObject jniObject,
JValue[] arguments
)
{
VerifyReturnType(JniType.Void);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
// NOTE: OK if "JValue[] arguments" is null
JniEnvironment.Functions.CallVoidMethodA(environment.Handle, jniObject.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
}
public string CallStringMethod(
JniEnvironment environment,
JniObject jniObject,
JValue[] arguments
)
{
VerifyReturnType(JniType.String);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
// NOTE: OK if "JValue[] arguments" is null
IntPtr result = JniEnvironment.Functions.CallObjectMethodA(environment.Handle, jniObject.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
return JniString.ExtractAndRelease(environment, result);
}
public void CallStaticVoidMethod(
JniEnvironment environment,
JValue[] arguments
)
{
VerifyReturnType(JniType.Void);
VerifyEnvironment(environment);
VerifyStatic();
// NOTE: OK if "JValue[] arguments" is null
JniEnvironment.Functions.CallStaticVoidMethodA(environment.Handle, this.DeclaringClass.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
}
public short CallStaticShortMethod(
JniEnvironment environment,
JValue[] arguments
)
{
VerifyReturnType(JniType.Short);
VerifyEnvironment(environment);
VerifyStatic();
// NOTE: OK if "JValue[] arguments" is null
short result = JniEnvironment.Functions.CallStaticShortMethodA(environment.Handle, this.DeclaringClass.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
return result;
}
public JniObject CallStaticObjectMethod(
JniEnvironment environment,
JValue[] arguments
)
{
VerifyObjectReturnType();
VerifyEnvironment(environment);
VerifyStatic();
// NOTE: OK if "JValue[] arguments" is null
IntPtr result = JniEnvironment.Functions.CallStaticObjectMethodA(environment.Handle, this.DeclaringClass.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
return JniObject.CreateReturnObject(environment, result, this);
}
public JniObject NewThrowableObject(JniEnvironment environment, JValue[] arguments)
{
return NewObjectCore(environment, arguments, JniConcreteObjectType.Throwable);
}
