jar2xml.JavaArchive.java Source code

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Here is the source code for jar2xml.JavaArchive.java

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/* 
 *  Copyright (c) 2011 Xamarin Inc.
 * 
 *  Permission is hereby granted, free of charge, to any person 
 *  obtaining a copy of this software and associated documentation 
 *  files (the "Software"), to deal in the Software without restriction, 
 *  including without limitation the rights to use, copy, modify, merge, 
 *  publish, distribute, sublicense, and/or sell copies of the Software, 
 *  and to permit persons to whom the Software is furnished to do so, 
 *  subject to the following conditions:
 * 
 *  The above copyright notice and this permission notice shall be 
 *  included in all copies or substantial portions of the Software.
 * 
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 
 *  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 
 *  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 
 *  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
 *  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
 *  SOFTWARE.
 */

package jar2xml;

import java.io.File;
import java.io.InputStream;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.jar.JarFile;
import java.util.jar.JarEntry;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import org.objectweb.asm.*;
import org.objectweb.asm.tree.*;

public class JavaArchive {

    private List<JarFile> files = new ArrayList<JarFile>();
    private ClassLoader loader;

    public JavaArchive(List<String> filenames, List<String> additionalJars) throws Exception {
        List<URL> urls = new ArrayList<URL>();
        for (String filename : filenames) {
            files.add(new JarFile(filename));
            urls.add(new File(filename).getAbsoluteFile().toURL());
        }
        for (String additionalJar : additionalJars)
            urls.add(new File(additionalJar).getAbsoluteFile().toURL());
        URL[] urlsArray = new URL[urls.size()];
        urls.toArray(urlsArray);
        loader = new URLClassLoader(urlsArray, JavaArchive.class.getClassLoader());
    }

    public List<JavaPackage> getPackages() {
        HashMap<String, JavaPackage> packages = new HashMap<String, JavaPackage>();
        for (JarFile file : files)
            getPackages(packages, file);

        ArrayList<JavaPackage> result = new ArrayList<JavaPackage>(packages.values());
        Collections.sort(result);
        return result;
    }

    void getPackages(HashMap<String, JavaPackage> packages, JarFile file) {
        Enumeration<JarEntry> entries = file.entries();
        while (entries.hasMoreElements()) {
            JarEntry entry = entries.nextElement();
            String name = entry.getName();
            if (name.endsWith(".class")) {
                name = name.substring(0, name.length() - 6);
                try {
                    InputStream stream = file.getInputStream(entry);
                    ClassReader reader = new ClassReader(stream);
                    ClassNode node = new ClassNode();
                    reader.accept(node, 0);
                    JavaClass.asmClasses.put(node.name, node);

                    Class c = loader.loadClass(name.replace('/', '.'));
                    //String pkgname = c.getPackage ().getName ();
                    String pkgname = name.substring(0, name.lastIndexOf('/')).replace('/', '.');

                    JavaPackage pkg = packages.get(pkgname);
                    if (pkg == null) {
                        pkg = new JavaPackage(pkgname);
                        packages.put(pkgname, pkg);
                    }
                    pkg.addClass(new JavaClass(c, node));
                } catch (Throwable t) {
                    t.printStackTrace();
                    System.err.println("warning J2X9001: Couldn't load class " + name + " : " + t);
                }
            }
        }
    }
}