jaroslav@1599
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/**
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jaroslav@1599
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012 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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* it under the terms of the GNU General Public License as published by
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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.
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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://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.bck2brwsr.aot;
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import java.io.BufferedReader;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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jaroslav@1679
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Set;
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import java.util.jar.JarEntry;
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import java.util.jar.JarFile;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import java.util.zip.ZipEntry;
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import org.apidesign.vm4brwsr.Bck2Brwsr;
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/** Utilities to process JAR files and set a compiler
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* up.
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*
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* @since 0.9
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* @author Jaroslav Tulach
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*/
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public final class Bck2BrwsrJars {
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private static final Logger LOG = Logger.getLogger(Bck2BrwsrJars.class.getName());
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private Bck2BrwsrJars() {
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}
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/** Creates new compiler pre-configured from the content of
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* provided JAR file. The compiler will compile all classes.
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* The system understands OSGi manifest entries and will export
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* all packages that are exported in the JAR file. The system
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jaroslav@1628
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* also recognizes META-INF/services and makes sure the class names
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* are not mangled.
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*
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* @param c the compiler to {@link Bck2Brwsr#addClasses(java.lang.String...) add classes},
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* {@link Bck2Brwsr#addResources(java.lang.String...) add resources} and
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* {@link Bck2Brwsr#addExported(java.lang.String...) exported objects} to.
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* Can be <code>null</code> - in such case an
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* {@link Bck2Brwsr#newCompiler() empty compiler} is constructed.
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* @param jar the file to process
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* @return newly configured compiler
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* @throws IOException if something goes wrong
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*/
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public static Bck2Brwsr configureFrom(Bck2Brwsr c, File jar) throws IOException {
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return configureFrom(c, jar, null);
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}
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jaroslav@1710
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jaroslav@1710
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/** Creates new compiler pre-configured from the content of
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jaroslav@1710
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* provided JAR file. The compiler will compile all classes.
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jaroslav@1710
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* The system understands OSGi manifest entries and will export
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jaroslav@1710
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* all packages that are exported in the JAR file. The system
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jaroslav@1710
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* also recognizes META-INF/services and makes sure the class names
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* are not mangled.
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jaroslav@1710
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*
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* @param c the compiler to {@link Bck2Brwsr#addClasses(java.lang.String...) add classes},
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jaroslav@1710
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* {@link Bck2Brwsr#addResources(java.lang.String...) add resources} and
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* {@link Bck2Brwsr#addExported(java.lang.String...) exported objects} to.
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* Can be <code>null</code> - in such case an
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jaroslav@1710
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* {@link Bck2Brwsr#newCompiler() empty compiler} is constructed.
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* @param jar the file to process
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jaroslav@1710
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* @param classpath additional resources to make available during
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* compilation, but not include them in the generated JavaScript
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* @return newly configured compiler
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* @throws IOException if something goes wrong
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* @since 0.11
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*/
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public static Bck2Brwsr configureFrom(
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Bck2Brwsr c, File jar, final ClassLoader classpath
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) throws IOException {
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if (jar.isDirectory()) {
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return configureDir(c, jar, classpath);
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}
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final JarFile jf = new JarFile(jar);
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final List<String> classes = new ArrayList<>();
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List<String> resources = new ArrayList<>();
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Set<String> exported = new HashSet<>();
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class JarRes extends EmulationResources implements Bck2Brwsr.Resources {
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JarRes() {
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super(classpath, classes);
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}
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@Override
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public InputStream get(String resource) throws IOException {
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jaroslav@1696
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InputStream is = getConverted(resource);
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jaroslav@1696
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if (is != null) {
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return is;
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}
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is = jf.getInputStream(new ZipEntry(resource));
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return is == null ? super.get(resource) : is;
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}
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}
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JarRes jarRes = new JarRes();
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listJAR(jf, jarRes, resources, exported);
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String cp = jf.getManifest().getMainAttributes().getValue("Class-Path"); // NOI18N
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String[] parts = cp == null ? new String[0] : cp.split(" ");
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jaroslav@1622
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if (c == null) {
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c = Bck2Brwsr.newCompiler();
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jaroslav@1622
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}
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return c
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.library(parts)
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.addClasses(classes.toArray(new String[classes.size()]))
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.addExported(exported.toArray(new String[exported.size()]))
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.addResources(resources.toArray(new String[resources.size()]))
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.resources(jarRes);
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}
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private static void listJAR(
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JarFile j, EmulationResources classes,
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jaroslav@1599
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List<String> resources, Set<String> keep
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) throws IOException {
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jaroslav@1599
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Enumeration<JarEntry> en = j.entries();
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while (en.hasMoreElements()) {
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JarEntry e = en.nextElement();
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final String n = e.getName();
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if (n.endsWith("/")) {
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continue;
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}
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jaroslav@1602
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if (n.startsWith("META-INF/maven/")) {
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continue;
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jaroslav@1602
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}
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int last = n.lastIndexOf('/');
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String pkg = n.substring(0, last + 1);
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if (pkg.startsWith("java/")) {
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keep.add(pkg);
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}
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if (n.endsWith(".class")) {
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classes.addClassResource(n);
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} else {
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resources.add(n);
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if (n.startsWith("META-INF/services/") && keep != null) {
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BufferedReader r = new BufferedReader(new InputStreamReader(j.getInputStream(e)));
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for (;;) {
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String l = r.readLine();
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if (l == null) {
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break;
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}
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if (l.startsWith("#")) {
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continue;
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}
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keep.add(l.replace('.', '/'));
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}
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}
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}
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jaroslav@1599
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}
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jaroslav@1599
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String exp = j.getManifest().getMainAttributes().getValue("Export-Package");
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if (exp != null && keep != null) {
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for (String def : exp.split(",")) {
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for (String sep : def.split(";")) {
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keep.add(sep.replace('.', '/') + "/");
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break;
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}
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}
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jaroslav@1599
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}
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jaroslav@1599
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}
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jaroslav@1678
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jaroslav@1678
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static byte[] readFrom(InputStream is) throws IOException {
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jaroslav@1678
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int expLen = is.available();
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jaroslav@1678
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if (expLen < 1) {
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jaroslav@1678
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expLen = 1;
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jaroslav@1678
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}
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jaroslav@1678
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byte[] arr = new byte[expLen];
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jaroslav@1678
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int pos = 0;
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jaroslav@1678
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for (;;) {
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jaroslav@1678
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int read = is.read(arr, pos, arr.length - pos);
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jaroslav@1678
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if (read == -1) {
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jaroslav@1678
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break;
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jaroslav@1678
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}
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jaroslav@1678
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pos += read;
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jaroslav@1678
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if (pos == arr.length) {
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jaroslav@1678
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byte[] tmp = new byte[arr.length * 2];
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jaroslav@1678
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System.arraycopy(arr, 0, tmp, 0, arr.length);
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jaroslav@1678
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arr = tmp;
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jaroslav@1678
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}
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jaroslav@1678
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}
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jaroslav@1678
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if (pos != arr.length) {
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jaroslav@1678
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byte[] tmp = new byte[pos];
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jaroslav@1678
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System.arraycopy(arr, 0, tmp, 0, pos);
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jaroslav@1678
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arr = tmp;
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jaroslav@1678
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}
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jaroslav@1678
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return arr;
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jaroslav@1678
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}
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jaroslav@1678
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jaroslav@1599
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jaroslav@1599
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static class EmulationResources implements Bck2Brwsr.Resources {
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jaroslav@1678
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private final List<String> classes;
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jaroslav@1678
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private final Map<String,byte[]> converted = new HashMap<>();
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jaroslav@1678
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private final BytecodeProcessor proc;
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jaroslav@1710
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private final ClassLoader cp;
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jaroslav@1678
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jaroslav@1710
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protected EmulationResources(ClassLoader cp, List<String> classes) {
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jaroslav@1678
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this.classes = classes;
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jaroslav@1710
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this.cp = cp != null ? cp : Bck2BrwsrJars.class.getClassLoader();
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jaroslav@1678
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BytecodeProcessor p;
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jaroslav@1678
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try {
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jaroslav@1678
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Class<?> bpClass = Class.forName("org.apidesign.bck2brwsr.aot.RetroLambda");
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jaroslav@1678
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p = (BytecodeProcessor) bpClass.newInstance();
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jaroslav@1678
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} catch (Throwable t) {
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jaroslav@1678
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p = null;
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jaroslav@1678
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}
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jaroslav@1678
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this.proc = p;
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jaroslav@1678
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}
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jaroslav@1599
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jaroslav@1696
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protected final InputStream getConverted(String name) throws IOException {
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jaroslav@1684
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byte[] arr = converted.get(name);
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jaroslav@1684
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if (arr != null) {
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jaroslav@1684
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return new ByteArrayInputStream(arr);
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jaroslav@1684
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}
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jaroslav@1696
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return null;
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jaroslav@1696
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}
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jaroslav@1696
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jaroslav@1696
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240 |
@Override
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jaroslav@1696
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241 |
public InputStream get(String name) throws IOException {
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jaroslav@1696
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242 |
InputStream is = getConverted(name);
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jaroslav@1696
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243 |
if (is != null) {
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jaroslav@1696
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244 |
return is;
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jaroslav@1696
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}
|
jaroslav@1710
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246 |
Enumeration<URL> en = cp.getResources(name);
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jaroslav@1599
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247 |
URL u = null;
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jaroslav@1599
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248 |
while (en.hasMoreElements()) {
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jaroslav@1599
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u = en.nextElement();
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jaroslav@1599
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}
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jaroslav@1599
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251 |
if (u == null) {
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jaroslav@1599
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LOG.log(Level.WARNING, "Cannot find {0}", name);
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jaroslav@1599
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253 |
return null;
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jaroslav@1599
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254 |
}
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jaroslav@1599
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255 |
if (u.toExternalForm().contains("/rt.jar!")) {
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jaroslav@1599
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LOG.log(Level.WARNING, "{0}No bootdelegation for ", name);
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jaroslav@1599
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257 |
return null;
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jaroslav@1599
|
258 |
}
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jaroslav@1599
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259 |
return u.openStream();
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jaroslav@1599
|
260 |
}
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jaroslav@1678
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261 |
|
jaroslav@1678
|
262 |
private void addClassResource(String n) throws IOException {
|
jaroslav@1678
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263 |
if (proc != null) {
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jaroslav@1678
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264 |
try (InputStream is = this.get(n)) {
|
jaroslav@1678
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265 |
Map<String, byte[]> conv = proc.process(n, readFrom(is), this);
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jaroslav@1678
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266 |
if (conv != null) {
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jaroslav@1681
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boolean found = false;
|
jaroslav@1681
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268 |
for (Map.Entry<String, byte[]> entrySet : conv.entrySet()) {
|
jaroslav@1681
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269 |
String res = entrySet.getKey();
|
jaroslav@1681
|
270 |
byte[] bytes = entrySet.getValue();
|
jaroslav@1681
|
271 |
if (res.equals(n)) {
|
jaroslav@1681
|
272 |
found = true;
|
jaroslav@1681
|
273 |
}
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jaroslav@1684
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274 |
assert res.endsWith(".class") : "Wrong resource: " + res;
|
jaroslav@1681
|
275 |
converted.put(res, bytes);
|
jaroslav@1681
|
276 |
classes.add(res.substring(0, res.length() - 6));
|
jaroslav@1681
|
277 |
}
|
jaroslav@1681
|
278 |
if (!found) {
|
jaroslav@1678
|
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throw new IOException("Cannot find " + n + " among " + conv);
|
jaroslav@1678
|
280 |
}
|
jaroslav@1678
|
281 |
return;
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jaroslav@1678
|
282 |
}
|
jaroslav@1678
|
283 |
}
|
jaroslav@1678
|
284 |
}
|
jaroslav@1678
|
285 |
classes.add(n.substring(0, n.length() - 6));
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jaroslav@1678
|
286 |
}
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jaroslav@1599
|
287 |
}
|
jaroslav@1599
|
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|
jaroslav@1710
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289 |
private static Bck2Brwsr configureDir(Bck2Brwsr c, final File dir, ClassLoader cp) throws IOException {
|
jaroslav@1679
|
290 |
List<String> arr = new ArrayList<>();
|
jaroslav@1679
|
291 |
List<String> classes = new ArrayList<>();
|
jaroslav@1679
|
292 |
class DirRes extends EmulationResources {
|
jaroslav@1710
|
293 |
public DirRes(ClassLoader cp, List<String> classes) {
|
jaroslav@1710
|
294 |
super(cp, classes);
|
jaroslav@1679
|
295 |
}
|
jaroslav@1679
|
296 |
|
jaroslav@1679
|
297 |
@Override
|
jaroslav@1679
|
298 |
public InputStream get(String name) throws IOException {
|
jaroslav@1679
|
299 |
InputStream is = super.get(name);
|
jaroslav@1679
|
300 |
if (is != null) {
|
jaroslav@1679
|
301 |
return is;
|
jaroslav@1679
|
302 |
}
|
jaroslav@1679
|
303 |
File r = new File(dir, name.replace('/', File.separatorChar));
|
jaroslav@1679
|
304 |
if (r.exists()) {
|
jaroslav@1679
|
305 |
return new FileInputStream(r);
|
jaroslav@1679
|
306 |
}
|
jaroslav@1679
|
307 |
return null;
|
jaroslav@1679
|
308 |
}
|
jaroslav@1679
|
309 |
}
|
jaroslav@1710
|
310 |
DirRes dirRes = new DirRes(cp, classes);
|
jaroslav@1679
|
311 |
listDir(dir, null, dirRes, arr);
|
jaroslav@1679
|
312 |
if (c == null) {
|
jaroslav@1679
|
313 |
c = Bck2Brwsr.newCompiler();
|
jaroslav@1679
|
314 |
}
|
jaroslav@1679
|
315 |
return c
|
jaroslav@1679
|
316 |
.addRootClasses(classes.toArray(new String[0]))
|
jaroslav@1679
|
317 |
.addResources(arr.toArray(new String[0]))
|
jaroslav@1679
|
318 |
.library()
|
jaroslav@1679
|
319 |
//.obfuscation(ObfuscationLevel.FULL)
|
jaroslav@1679
|
320 |
.resources(dirRes);
|
jaroslav@1679
|
321 |
}
|
jaroslav@1679
|
322 |
|
jaroslav@1679
|
323 |
private static void listDir(
|
jaroslav@1679
|
324 |
File f, String pref, EmulationResources res, List<String> resources
|
jaroslav@1679
|
325 |
) throws IOException {
|
jaroslav@1679
|
326 |
File[] arr = f.listFiles();
|
jaroslav@1679
|
327 |
if (arr == null) {
|
jaroslav@1679
|
328 |
if (f.getName().endsWith(".class")) {
|
jaroslav@1679
|
329 |
res.addClassResource(pref + f.getName());
|
jaroslav@1679
|
330 |
} else {
|
jaroslav@1679
|
331 |
resources.add(pref + f.getName());
|
jaroslav@1679
|
332 |
}
|
jaroslav@1679
|
333 |
} else {
|
jaroslav@1679
|
334 |
for (File ch : arr) {
|
jaroslav@1679
|
335 |
listDir(ch, pref == null ? "" : pref + f.getName() + "/", res, resources);
|
jaroslav@1679
|
336 |
}
|
jaroslav@1679
|
337 |
}
|
jaroslav@1679
|
338 |
}
|
jaroslav@1678
|
339 |
|
jaroslav@1599
|
340 |
}
|