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/**
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jaroslav@123
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* HTML via Java(tm) Language Bindings
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jaroslav@123
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* Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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jaroslav@123
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* it under the terms of the GNU General Public License as published by
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jaroslav@123
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. apidesign.org
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* designates this particular file as subject to the
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* "Classpath" exception as provided by apidesign.org
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* in the License file that accompanied this code.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://wiki.apidesign.org/wiki/GPLwithClassPathException
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*/
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package org.apidesign.html.boot.impl;
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import org.apidesign.html.boot.spi.Fn;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.Reader;
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import java.net.URL;
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import java.util.Enumeration;
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/**
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*
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* @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*/
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abstract class JsClassLoader extends ClassLoader {
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JsClassLoader(ClassLoader parent) {
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super(parent);
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setDefaultAssertionStatus(JsClassLoader.class.desiredAssertionStatus());
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}
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@Override
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protected abstract URL findResource(String name);
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@Override
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protected abstract Enumeration<URL> findResources(String name);
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@Override
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protected Class<?> findClass(String name) throws ClassNotFoundException {
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if (name.startsWith("javafx")) {
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return Class.forName(name);
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}
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if (name.startsWith("netscape")) {
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return Class.forName(name);
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}
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if (name.startsWith("com.sun")) {
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return Class.forName(name);
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}
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if (name.equals(JsClassLoader.class.getName())) {
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return JsClassLoader.class;
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}
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if (name.equals(Fn.class.getName())) {
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return Fn.class;
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}
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if (name.equals(Fn.Presenter.class.getName())) {
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return Fn.Presenter.class;
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}
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if (name.equals(FnUtils.class.getName())) {
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return FnUtils.class;
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}
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if (
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name.equals("org.apidesign.html.boot.spi.Fn") ||
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name.equals("org.apidesign.html.boot.impl.FnUtils") ||
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name.equals("org.apidesign.html.boot.impl.FnContext")
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) {
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return Class.forName(name);
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}
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URL u = findResource(name.replace('.', '/') + ".class");
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if (u != null) {
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InputStream is = null;
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try {
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is = u.openStream();
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byte[] arr = new byte[is.available()];
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int len = 0;
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while (len < arr.length) {
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int read = is.read(arr, len, arr.length - len);
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if (read == -1) {
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throw new IOException("Can't read " + u);
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}
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len += read;
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}
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is.close();
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is = null;
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arr = FnUtils.transform(JsClassLoader.this, arr);
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if (arr != null) {
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return defineClass(name, arr, 0, arr.length);
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}
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} catch (IOException ex) {
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throw new ClassNotFoundException("Can't load " + name, ex);
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} finally {
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try {
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if (is != null) is.close();
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} catch (IOException ex) {
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throw new ClassNotFoundException(null, ex);
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}
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}
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}
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return super.findClass(name);
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}
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protected abstract Fn defineFn(String code, String... names);
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protected abstract void loadScript(Reader code) throws Exception;
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}
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