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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
*
* 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 com.android.ide.eclipse.adt.build;
import com.android.ide.eclipse.adt.AdtPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import java.io.File;
import java.io.PrintStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
/**
* Wrapper to access dex.jar through reflection.
* <p/>Since there is no proper api to call the method in the dex library, this wrapper is going
* to access it through reflection.
*/
public final class DexWrapper {
private final static String DEX_MAIN = "com.android.dx.command.dexer.Main"; //$NON-NLS-1$
private final static String DEX_CONSOLE = "com.android.dx.command.DxConsole"; //$NON-NLS-1$
private final static String DEX_ARGS = "com.android.dx.command.dexer.Main$Arguments"; //$NON-NLS-1$
private final static String MAIN_RUN = "run"; //$NON-NLS-1$
private Method mRunMethod;
private Constructor<?> mArgConstructor;
private Field mArgOutName;
private Field mArgVerbose;
private Field mArgJarOutput;
private Field mArgFileNames;
private Field mConsoleOut;
private Field mConsoleErr;
/**
* Loads the dex library from a file path. The loaded library can be used with the
* {@link DexWrapper} object returned by {@link #getWrapper()}
* @param osFilepath the location of the dex.jar file.
* @return an IStatus indicating the result of the load.
*/
public synchronized IStatus loadDex(String osFilepath) {
try {
File f = new File(osFilepath);
if (f.isFile() == false) {
return new Status(IStatus.ERROR, AdtPlugin.PLUGIN_ID, String.format(
Messages.DexWrapper_s_does_not_exists, osFilepath));
}
URL url = f.toURL();
URLClassLoader loader = new URLClassLoader(new URL[] { url },
DexWrapper.class.getClassLoader());
// get the classes.
Class<?> mainClass = loader.loadClass(DEX_MAIN);
Class<?> consoleClass = loader.loadClass(DEX_CONSOLE);
Class<?> argClass = loader.loadClass(DEX_ARGS);
try {
// now get the fields/methods we need
mRunMethod = mainClass.getMethod(MAIN_RUN, argClass);
mArgConstructor = argClass.getConstructor();
mArgOutName = argClass.getField("outName"); //$NON-NLS-1$
mArgJarOutput = argClass.getField("jarOutput"); //$NON-NLS-1$
mArgFileNames = argClass.getField("fileNames"); //$NON-NLS-1$
mArgVerbose = argClass.getField("verbose"); //$NON-NLS-1$
mConsoleOut = consoleClass.getField("out"); //$NON-NLS-1$
mConsoleErr = consoleClass.getField("err"); //$NON-NLS-1$
} catch (SecurityException e) {
return createErrorStatus(Messages.DexWrapper_SecuryEx_Unable_To_Find_API, e);
} catch (NoSuchMethodException e) {
return createErrorStatus(Messages.DexWrapper_SecuryEx_Unable_To_Find_Method, e);
} catch (NoSuchFieldException e) {
return createErrorStatus(Messages.DexWrapper_SecuryEx_Unable_To_Find_Field, e);
}
return Status.OK_STATUS;
} catch (MalformedURLException e) {
// really this should not happen.
return createErrorStatus(
String.format(Messages.DexWrapper_Failed_to_load_s, osFilepath), e);
} catch (ClassNotFoundException e) {
return createErrorStatus(
String.format(Messages.DexWrapper_Failed_to_load_s, osFilepath), e);
}
}
/**
* Runs the dex command.
* @param osOutFilePath the OS path to the outputfile (classes.dex
* @param osFilenames list of input source files (.class and .jar files)
* @param verbose verbose mode.
* @param outStream the stdout console
* @param errStream the stderr console
* @return the integer return code of com.android.dx.command.dexer.Main.run()
* @throws CoreException
*/
public synchronized int run(String osOutFilePath, String[] osFilenames,
boolean verbose, PrintStream outStream, PrintStream errStream) throws CoreException {
try {
// set the stream
mConsoleErr.set(null /* obj: static field */, errStream);
mConsoleOut.set(null /* obj: static field */, outStream);
// create the Arguments object.
Object args = mArgConstructor.newInstance();
mArgOutName.set(args, osOutFilePath);
mArgFileNames.set(args, osFilenames);
mArgJarOutput.set(args, false);
mArgVerbose.set(args, verbose);
// call the run method
Object res = mRunMethod.invoke(null /* obj: static method */, args);
if (res instanceof Integer) {
return ((Integer)res).intValue();
}
return -1;
} catch (IllegalAccessException e) {
throw new CoreException(createErrorStatus(
String.format(Messages.DexWrapper_Unable_To_Execute_Dex_s, e.getMessage()), e));
} catch (InstantiationException e) {
throw new CoreException(createErrorStatus(
String.format(Messages.DexWrapper_Unable_To_Execute_Dex_s, e.getMessage()), e));
} catch (InvocationTargetException e) {
throw new CoreException(createErrorStatus(
String.format(Messages.DexWrapper_Unable_To_Execute_Dex_s, e.getMessage()), e));
}
}
private static IStatus createErrorStatus(String message, Exception e) {
AdtPlugin.log(e, message);
AdtPlugin.printErrorToConsole(Messages.DexWrapper_Dex_Loader, message);
return new Status(IStatus.ERROR, AdtPlugin.PLUGIN_ID, message, e);
}
}
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