| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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 com.android.layoutlib.bridge.intensive.setup; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Map; |
| |
| import com.google.android.collect.Maps; |
| |
| /** |
| * The ClassLoader to load the project's classes. |
| */ |
| public class ModuleClassLoader extends ClassLoader { |
| |
| private final Map<String, Class<?>> mClasses = Maps.newHashMap(); |
| private final String mClassLocation; |
| |
| public ModuleClassLoader(String classLocation) { |
| mClassLocation = classLocation; |
| } |
| |
| @Override |
| protected Class<?> findClass(String name) throws ClassNotFoundException { |
| Class<?> aClass = mClasses.get(name); |
| if (aClass != null) { |
| return aClass; |
| } |
| String pathName = mClassLocation.concat(name.replace('.', '/')).concat(".class"); |
| InputStream classInputStream = getClass().getResourceAsStream(pathName); |
| if (classInputStream == null) { |
| throw new ClassNotFoundException("Unable to find class " + name + " at " + pathName); |
| } |
| byte[] data; |
| try { |
| ByteArrayOutputStream buffer = new ByteArrayOutputStream(); |
| int nRead; |
| data = new byte[16384]; // 16k |
| while ((nRead = classInputStream.read(data, 0, data.length)) != -1) { |
| buffer.write(data, 0, nRead); |
| } |
| buffer.flush(); |
| data = buffer.toByteArray(); |
| } catch (IOException e) { |
| // Wrap the exception with ClassNotFoundException so that caller can deal with it. |
| throw new ClassNotFoundException("Unable to load class " + name, e); |
| } |
| aClass = defineClass(name, data, 0, data.length); |
| mClasses.put(name, aClass); |
| return aClass; |
| } |
| } |