reinit the tree, so we can have metadata

6 files changed, 848 insertions, 0 deletions

diff --git a/dev-java/java-dep-check/Manifest b/dev-java/java-dep-check/Manifest
new file mode 100644
index 000000000000..2193e9ca50eb
--- /dev/null
+++ b/dev-java/java-dep-check/Manifest
@@ -0,0 +1,7 @@
+AUX Main-0.3.java 11702 SHA256 c74c45307ef58b3575cdb58de83dd488d98b9229d03ff8276775d1e6e967072f SHA512 a70c0161fe72e8f4b4476cbdad5ae3074fbb7321214723a7b1b7778fd06de4eb616479de2b5d6ce9a6dab2e919d721ce2b177a515039a0b9592aa2b5e1017e88 WHIRLPOOL 523eed4b9409e96b7413abe5290278f7be22efc57cd8d432c022e0e57543fae645df5154baec734cb0383962b0a56bb2b12c6ff033e7fc1ed212f124176a8760
+AUX Main-0.4.java 14943 SHA256 757eb5cce30c518a2675028be96b19bd2cf792476040adea286c04994a1455aa SHA512 340e6912285ee5c61116cd838c2abf68c573e57053d0b923fcd3929e19253d7cf29a281b226a3624a69b358f112bdf4a554b6c23b850933d60d7a1fd059f7a1e WHIRLPOOL 8e4e78324bd2f71ad3efde5fef228e266b834fdb64762c92d35c8afdd38c1bce3d89cbe0d97ab8258358d190458837f24cbb11ef34fa01c695769fe3629a9ae8
+EBUILD java-dep-check-0.3-r1.ebuild 645 SHA256 2948254a6f3ba21f118a18f1ad0bf9fd37d5641bd3263680df297261732d95a6 SHA512 6da35a65c72ef3d61f4544d49fadac6d743d8b348130ae811b620d62b428227ad4a8cc889d78dd409291dc59a621f459c27993033d7daa2eee5f23ce4d786ebe WHIRLPOOL c9df315509e12cdfd063a73d9d2e94ed87dec8324e563434a14a2fc93fcbc03558fd22ad2aa741a3b5a1b32c75c0354bf3bab56b547a1e151d6a934f39155b1f
+EBUILD java-dep-check-0.4.ebuild 642 SHA256 661252553f7b5c2f862259a48430dba681c440409c083a48f2f3220a5d15f154 SHA512 61463bfcced95396791da6dcd12135c0724294956c74743492c4fb8a21199aa855250797e6aa6a5b34ad4a5b2e6c0bc34bd77745e4769f4aae6335821ce048e1 WHIRLPOOL fd9fbb1e863085e34e4999111ade059f60611321724280b3c0e019f199f18bb5b7c76b013be49b6f14d85649f58623edac9a3852444d2a9427939e21d900e255
+MISC ChangeLog 3691 SHA256 29e43b0aba0a7e426220811d60e225e159ad3abcfe8e62ee3507242a3ad3cb7b SHA512 c2ce4395bec863212696567df89a79fc9c4f5d5582bb57d496bea40ce94cb0da220ae40552f6b661d1714ab2c29c792cd1f3817b424c695d0d516289982a3dd1 WHIRLPOOL bf79bb45e3a16e722f55f7cfd6f5640f4bce720a6fa0768ab200b1ba39bb0525b90813d53b399e989072b14e840cf26f2e057d283e84d8ee49a304f815b99c58
+MISC ChangeLog-2015 1625 SHA256 2272c7ec29fec10ed8e7925bb133621b01bc75b21a4a27403316a8b862da4392 SHA512 1d06c346e8b41c17e44b5d3313b3d5953aac7fcebd1468fccf3095e2b9a5c1359b9c09f6648e3c72f945e24019a43121025039bc7451a65094d9d8f9fb0e374f WHIRLPOOL e3cd234f153ad929948cc2d1dd6f1f3f102d0a247fad1535db0cde92bbd4bfe6c8f74f823442d5a5346751567100693f2aa06e89f6789abbee25c97f657a0289
+MISC metadata.xml 236 SHA256 3e778d35b34b5cc1a4dd7ce105fe7d2a99b25fb6dfe24709455da94baa8a0548 SHA512 1755c2590e59060f697294c5ad125b83f2d50e05a71f7091b7de75953941914cd2db3a893bd6154a2c90fa4aff5e313e75e3e174dbba1edd5c112787da5be253 WHIRLPOOL 7967660784d0d28e9a3c3c222c5bf85b3a8b59fd84b61780e4e7cc1aa5d8bd87bee40e4c5c42e646f15d6641fe182340bcbe8be94c785f40e0ac870c7a96e5cc
diff --git a/dev-java/java-dep-check/files/Main-0.3.java b/dev-java/java-dep-check/files/Main-0.3.java
new file mode 100644
index 000000000000..e1f02a024eef
--- /dev/null
+++ b/dev-java/java-dep-check/files/Main-0.3.java
@@ -0,0 +1,335 @@
+/*
+ * Main.java The main application class.
+ *
+ * Created on May 1, 2007, 6:32 PM
+ *
+ * Copyright (C) 2007,2008 Petteri Räty <betelgeuse@gentoo.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package javadepchecker;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.CommandLineParser;
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.apache.commons.cli.PosixParser;
+import org.objectweb.asm.AnnotationVisitor;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.FieldVisitor;
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.commons.EmptyVisitor;
+
+/**
+ *
+ * @author betelgeuse
+ * @author serkan
+ */
+public final class Main extends EmptyVisitor {
+
+    static private String image = "";
+    private Set<String> deps = new HashSet<String>();
+    private Set<String> current = new HashSet<String>();
+
+    /** Creates a new instance of Main */
+    public Main() {
+    }
+
+    private static Collection<String> getPackageJars(String pkg) {
+        ArrayList<String> jars = new ArrayList<String>();
+        try {
+            Process p = Runtime.getRuntime().exec("java-config -p " + pkg);
+            p.waitFor();
+            BufferedReader in;
+            in = new BufferedReader(new InputStreamReader(p.getInputStream()));
+            String output = in.readLine();
+            if (output!=null/* package somehow missing*/ && !output.trim().equals("")) {
+                for (String jar : output.split(":")) {
+                    jars.add(jar);
+                }
+            }
+        } catch (InterruptedException ex) {
+            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+        } catch (IOException ex) {
+            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        return jars;
+    }
+
+    public void processJar(JarFile jar) throws IOException {
+        for (Enumeration<JarEntry> e = jar.entries(); e.hasMoreElements();) {
+            JarEntry entry = e.nextElement();
+            String name = entry.getName();
+            if (!entry.isDirectory() && name.endsWith(".class")) {
+                this.current.add(name);
+                InputStream stream = jar.getInputStream(entry);
+                new ClassReader(stream).accept(this, 0);
+            }
+        }
+    }
+
+    private static boolean depNeeded(String pkg, Collection<String> deps) throws IOException {
+        Collection<String> jars = getPackageJars(pkg);
+        // We have a virtual with VM provider here
+        if (jars.size() == 0) {
+            return true;
+        }
+        for (String jarName : jars) {
+            JarFile jar = new JarFile(jarName);
+            for (Enumeration<JarEntry> e = jar.entries(); e.hasMoreElements();) {
+                String name = e.nextElement().getName();
+                if (deps.contains(name)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    private static boolean depsFound(Collection<String> pkgs, Collection<String> deps) throws IOException {
+        boolean found = true;
+        Collection<String> jars = new ArrayList<String>();
+        String[] bootClassPathJars = System.getProperty("sun.boot.class.path").split(":");
+        // Do we need "java-config -r" here?
+        for (String jar : bootClassPathJars) {
+            File jarFile = new File(jar);
+            if (jarFile.exists()) {
+                jars.add(jar);
+            }
+        }
+        for (Iterator<String> pkg = pkgs.iterator(); pkg.hasNext();) {
+            jars.addAll(getPackageJars(pkg.next()));
+        }
+
+        if (jars.size() == 0) {
+            return false;
+        }
+        ArrayList<String> jarClasses = new ArrayList<String>();
+        for (String jarName : jars) {
+            JarFile jar = new JarFile(jarName);
+            for (Enumeration<JarEntry> e = jar.entries(); e.hasMoreElements();) {
+                jarClasses.add(e.nextElement().getName());
+            }
+        }
+        for (String dep : deps) {
+            if (!jarClasses.contains(dep)) {
+                if (found) {
+                    System.out.println("Class files not found via DEPEND in package.env");
+                }
+                System.out.println("\t" + dep);
+                found = false;
+            }
+        }
+        return found;
+    }
+
+    private static boolean checkPkg(File env) {
+        boolean needed = true;
+        boolean found = true;
+        HashSet<String> pkgs = new HashSet<String>();
+        Collection<String> deps = null;
+
+        BufferedReader in = null;
+        try {
+            Pattern dep_re = Pattern.compile("^DEPEND=\"([^\"]*)\"$");
+            Pattern cp_re = Pattern.compile("^CLASSPATH=\"([^\"]*)\"$");
+
+            String line;
+            in = new BufferedReader(new FileReader(env));
+            while ((line = in.readLine()) != null) {
+                Matcher m = dep_re.matcher(line);
+                if (m.matches()) {
+                    String atoms = m.group(1);
+                    for (String atom : atoms.split(":")) {
+                        String pkg = atom;
+                        if (atom.contains("@")) {
+                            pkg = atom.split("@")[1];
+                        }
+                        pkgs.add(pkg);
+                    }
+                    continue;
+                }
+                m = cp_re.matcher(line);
+                if (m.matches()) {
+                    Main classParser = new Main();
+                    for (String jar : m.group(1).split(":")) {
+                        if (jar.endsWith(".jar")) {
+                            classParser.processJar(new JarFile(image + jar));
+                        }
+                    }
+                    deps = classParser.getDeps();
+                }
+            }
+
+            for (String pkg : pkgs) {
+                if (!depNeeded(pkg, deps)) {
+                    if (needed) {
+                        System.out.println("Possibly unneeded dependencies found");
+                    }
+                    System.out.println("\t" + pkg);
+                    needed = false;
+                }
+            }
+            found = depsFound(pkgs, deps);
+
+        } catch (IOException ex) {
+            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+        } finally {
+            try {
+                in.close();
+            } catch (IOException ex) {
+                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
+        return needed && found;
+    }
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) throws IOException {
+        int exit = 0;
+        try {
+            CommandLineParser parser = new PosixParser();
+            Options options = new Options();
+            options.addOption("h", "help", false, "print help");
+            options.addOption("i", "image", true, "image directory");
+            options.addOption("v", "verbose", false, "print verbose output");
+            CommandLine line = parser.parse(options, args);
+            String[] files = line.getArgs();
+            if (line.hasOption("h") || files.length == 0) {
+                HelpFormatter h = new HelpFormatter();
+                h.printHelp("java-dep-check [-i <image>] <package.env>+", options);
+            } else {
+                image = line.getOptionValue("i", "");
+
+                for (String arg : files) {
+                    if (line.hasOption('v')) {
+                        System.out.println("Checking " + arg);
+                    }
+                    if (!checkPkg(new File(arg))) {
+                        exit = 1;
+                    }
+                }
+            }
+        } catch (ParseException ex) {
+            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        System.exit(exit);
+    }
+
+    private void addDep(String dep) {
+        deps.add(dep + ".class");
+    }
+
+    private void addDep(Type dep) {
+        if (dep.getSort() == Type.ARRAY) {
+            addDep(dep.getElementType());
+        }
+        if (dep.getSort() == Type.OBJECT) {
+            addDep(dep.getInternalName());
+        }
+    }
+
+    private Collection<String> getDeps() {
+        ArrayList<String> result = new ArrayList<String>();
+        for (String s : deps) {
+            if (!current.contains(s)) {
+                result.add(s);
+            }
+        }
+        return result;
+    }
+
+    @Override
+    public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
+        if(superName != null) {
+            addDep(superName);
+        }
+        for (String iface : interfaces) {
+            addDep(iface);
+        }
+    }
+
+    @Override
+    public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
+        addDep(Type.getType(desc));
+        return null;
+    }
+
+    @Override
+    public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
+        for (Type param : Type.getArgumentTypes(desc)) {
+            addDep(param);
+        }
+
+        if (exceptions != null) {
+            for (String exception : exceptions) {
+                addDep(exception);
+            }
+        }
+        addDep(Type.getReturnType(desc));
+        return new EmptyVisitor() {
+            @Override
+            public void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index) {
+                addDep(Type.getType(desc));
+            }
+
+            @Override
+            public void visitFieldInsn(int opcode, String owner, String name, String desc) {
+                addDep(Type.getObjectType(owner));
+                addDep(Type.getType(desc));
+            }
+
+            @Override
+            public void visitMethodInsn(int opcode, String owner, String name, String desc) {
+                addDep(Type.getObjectType(owner));
+            }
+
+            @Override
+            public AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) {
+                return Main.this.visitAnnotation(desc, visible);
+            }
+        };
+    }
+
+    @Override
+    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
+        addDep(Type.getType(desc));
+        return null;
+    }
+}
diff --git a/dev-java/java-dep-check/files/Main-0.4.java b/dev-java/java-dep-check/files/Main-0.4.java
new file mode 100644
index 000000000000..ea877e92fce8
--- /dev/null
+++ b/dev-java/java-dep-check/files/Main-0.4.java
@@ -0,0 +1,436 @@
+/**
+ * This file is part of javadepchecker
+ *
+ * Copyright (C) 2016 Gentoo Foundation
+ *
+ * javadepchecker is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package javadepchecker;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.util.Properties;
+
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.CommandLineParser;
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.apache.commons.cli.PosixParser;
+
+import org.objectweb.asm.AnnotationVisitor;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.FieldVisitor;
+import org.objectweb.asm.Label;
+import org.objectweb.asm.MethodVisitor;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.Type;
+
+/**
+ * Main Class of javadepchecker
+ * Gentoo Java Utility to scan class files for unneeded dependencies and 
+ * ophaned class files
+ *
+ * @author Petteri Räty <betelgeuse@gentoo.org>
+ * @author Serkan Kaba <serkan@gentoo.org>
+ * @author William L. Thomson Jr., <wlt@o-sinc.com>
+ */
+public final class Main extends ClassVisitor {
+
+    static private String image = "";
+    private Set<String> mDeps = new HashSet<>();
+    private Set<String> mCurrent = new HashSet<>();
+
+    /**
+     * Empty Constructor, sets ASM op code version
+     */
+    public Main() {
+        super(Opcodes.ASM5);
+    }
+
+    /**
+     * Get jar names from the Gentoo package and store in a collection
+     *
+     * @param pkg Gentoo package name
+     * @return a collection of jar names
+     */
+    private static Collection<String> getPackageJars(String pkg) {
+        ArrayList<String> jars = new ArrayList<>();
+        try {
+            Process p = Runtime.getRuntime().exec("java-config -p " + pkg);
+            p.waitFor();
+            BufferedReader in;
+            in = new BufferedReader(new InputStreamReader(p.getInputStream()));
+            String output = in.readLine();
+            if (output!=null/* package somehow missing*/ &&
+                !output.trim().isEmpty()) {
+                jars.addAll(Arrays.asList(output.split(":")));
+            }
+        } catch (InterruptedException | IOException ex) {
+            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        return jars;
+    }
+
+    /**
+     * Scan jar for classes to be processed by ASM
+     *
+     * @param jar jar file to be processed
+     * @throws IOException
+     */
+    public void processJar(JarFile jar) throws IOException {
+        Collections.list(jar.entries())
+                   .stream()
+                   .filter((JarEntry entry) -> (!entry.isDirectory() && entry.getName().endsWith("class")))
+                   .forEach((JarEntry entry) -> {
+            InputStream is = null;
+            try {
+                Main.this.mCurrent.add(entry.getName());
+                is = jar.getInputStream(entry);
+                new ClassReader(is).accept(Main.this, 0);
+            } catch (IOException ex) {
+                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+            } finally {
+                try {
+                    if(is!=null)
+                        is.close();
+                } catch (IOException ex) {
+                    Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+                }
+            }
+        });
+    }
+
+    /**
+     * Check if a dependency is needed by a given package
+     *
+     * @param pkg Gentoo package name
+     * @param deps collection of dependencies for the package
+     * @return boolean if the dependency is needed or not
+     * @throws IOException
+     */
+    private static boolean depNeeded(String pkg,
+                                     Collection<String> deps) throws IOException {
+        Collection<String> jars = getPackageJars(pkg);
+
+        // We have a virtual with VM provider here
+        if (jars.isEmpty()) {
+            return true;
+        }
+        for (String jarName : jars) {
+            JarFile jar = new JarFile(jarName);
+            for (Enumeration<JarEntry> e = jar.entries(); e.hasMoreElements();) {
+                String name = e.nextElement().getName();
+                if (deps.contains(name)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Check for orphaned class files not owned by any package in dependencies
+     *
+     * @param pkg Gentoo package name
+     * @param deps collection of dependencies for the package
+     * @return boolean if the dependency is found or not
+     * @throws IOException
+     */
+    private static boolean depsFound(Collection<String> pkgs,
+                                     Collection<String> deps) throws IOException {
+        boolean found = true;
+        Collection<String> jars = new ArrayList<>();
+        String[] bootClassPathJars = System.getProperty("sun.boot.class.path").split(":");
+        // Do we need "java-config -r" here?
+        for (String jar : bootClassPathJars) {
+            File jarFile = new File(jar);
+            if (jarFile.exists()) {
+                jars.add(jar);
+            }
+        }
+        pkgs.forEach((String pkg) -> {
+            jars.addAll(getPackageJars(pkg));
+        });
+
+        if (jars.isEmpty()) {
+            return false;
+        }
+        ArrayList<String> jarClasses = new ArrayList<>();
+        jars.forEach((String jarName) -> {
+            try {
+                JarFile jar = new JarFile(jarName);
+                Collections.list(jar.entries()).forEach((JarEntry entry) -> {
+                    jarClasses.add(entry.getName());
+                });
+            } catch (IOException ex) {
+                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        });
+        for (String dep : deps) {
+            if (!jarClasses.contains(dep)) {
+                if (found) {
+                    System.out.println("Class files not found via DEPEND in package.env");
+                }
+                System.out.println("\t" + dep);
+                found = false;
+            }
+        }
+        return found;
+    }
+
+    /**
+     * Core method, this one fires off all others and is the one called from
+     * Main. Check this package for unneeded dependencies and orphaned class
+     * files
+     *
+     * @param env
+     * @return 
+     */
+    private static boolean checkPkg(File env) {
+        boolean needed = true;
+        boolean found = true;
+        HashSet<String> pkgs = new HashSet<>();
+        Collection<String> deps = null;
+        InputStream is = null;
+
+        try {
+            // load package.env
+            Properties props = new Properties();
+            is = new FileInputStream(env);
+            props.load(is);
+
+            // load package deps, add to hashset if exist
+            String depend = props.getProperty("DEPEND");
+            if(depend!=null &&
+               !depend.isEmpty()) {
+                for (String atom : depend.replaceAll("\"","").split(":")) {
+                    String pkg = atom;
+                    if (atom.contains("@")) {
+                        pkg = atom.split("@")[1];
+                    }
+                    pkgs.add(pkg);
+                }
+            }
+
+            // load package classpath
+            String classpath = props.getProperty("CLASSPATH");
+            if(classpath!=null &&
+               !classpath.isEmpty()) {
+                Main classParser = new Main();
+                for (String jar : classpath.replaceAll("\"","").split(":")) {
+                    if (jar.endsWith(".jar")) {
+                        classParser.processJar(new JarFile(image + jar));
+                    }
+                }
+                deps = classParser.getDeps();
+            }
+
+            for (String pkg : pkgs) {
+                if (!depNeeded(pkg, deps)) {
+                    if (needed) {
+                        System.out.println("Possibly unneeded dependencies found");
+                    }
+                    System.out.println("\t" + pkg);
+                    needed = false;
+                }
+            }
+            found = depsFound(pkgs, deps);
+
+        } catch (IOException ex) {
+            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+        } finally {
+            try {
+                if(is!=null)
+                    is.close();
+            } catch (IOException ex) {
+                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
+        return needed && found;
+    }
+
+    /** Main method, parse command line opts, invoke the package checker
+     * @param args the command line arguments
+     * @throws java.io.IOException
+     */
+    public static void main(String[] args) throws IOException {
+        int exit = 0;
+        try {
+            CommandLineParser parser = new PosixParser();
+            Options options = new Options();
+            options.addOption("h", "help", false, "print help");
+            options.addOption("i", "image", true, "image directory");
+            options.addOption("v", "verbose", false, "print verbose output");
+            CommandLine line = parser.parse(options, args);
+            String[] files = line.getArgs();
+            if (line.hasOption("h") || files.length == 0) {
+                HelpFormatter h = new HelpFormatter();
+                h.printHelp("java-dep-check [-i <image>] <package.env>+", options);
+            } else {
+                image = line.getOptionValue("i", "");
+
+                for (String arg : files) {
+                    if (line.hasOption('v')) {
+                        System.out.println("Checking " + arg);
+                    }
+                    if (!checkPkg(new File(arg))) {
+                        exit = 1;
+                    }
+                }
+            }
+        } catch (ParseException ex) {
+            Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+        }
+        System.exit(exit);
+    }
+
+    /**
+     * Add dependency to deps hashset
+     *
+     * @param dep dependent class name
+     */
+    private void addDep(String dep) {
+        mDeps.add(dep + ".class");
+    }
+
+    /**
+     * Add dependency type to deps hashset
+     *
+     * @param dep dependent class name
+     */
+    private void addDep(Type dep) {
+        if (dep.getSort() == Type.ARRAY) {
+            addDep(dep.getElementType());
+        }
+        if (dep.getSort() == Type.OBJECT) {
+            addDep(dep.getInternalName());
+        }
+    }
+    
+    /**
+     * Get deps not contained in the current hashset
+     *
+     * @return a collection of deps
+     */
+    private Collection<String> getDeps() {
+        ArrayList<String> result = new ArrayList<>();
+        mDeps.stream().filter((s) -> (!mCurrent.contains(s))).forEach((s) -> {
+            result.add(s);
+        });
+        return result;
+    }
+
+    @Override
+    public void visit(int version,
+                      int access,
+                      String name,
+                      String signature,
+                      String superName,
+                      String[] interfaces) {
+        if(superName != null) {
+            addDep(superName);
+        }
+        for (String iface : interfaces) {
+            addDep(iface);
+        }
+    }
+
+    @Override
+    public FieldVisitor visitField(int access,
+                                   String name,
+                                   String desc,
+                                   String signature,
+                                   Object value) {
+        addDep(Type.getType(desc));
+        return null;
+    }
+
+    @Override
+    public MethodVisitor visitMethod(int access,
+                                     String name,
+                                     String desc,
+                                     String signature,
+                                     String[] exceptions) {
+        for (Type param : Type.getArgumentTypes(desc)) {
+            addDep(param);
+        }
+
+        if (exceptions != null) {
+            for (String exception : exceptions) {
+                addDep(exception);
+            }
+        }
+        addDep(Type.getReturnType(desc));
+        return new MethodVisitor(Opcodes.ASM5) {
+            @Override
+            public void visitLocalVariable(String name,
+                                           String desc,
+                                           String signature,
+                                           Label start,
+                                           Label end,
+                                           int index) {
+                addDep(Type.getType(desc));
+            }
+
+            @Override
+            public void visitFieldInsn(int opcode,
+                                       String owner,
+                                       String name,
+                                       String desc) {
+                addDep(Type.getObjectType(owner));
+                addDep(Type.getType(desc));
+            }
+
+            @Override
+            public void visitMethodInsn(int opcode,
+                                        String owner,
+                                        String name,
+                                        String desc,
+                                        boolean itf) {
+                addDep(Type.getObjectType(owner));
+            }
+
+            @Override
+            public AnnotationVisitor visitParameterAnnotation(int parameter,
+                                                              String desc,
+                                                              boolean visible) {
+                return Main.this.visitAnnotation(desc, visible);
+            }
+        };
+    }
+
+    @Override
+    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
+        addDep(Type.getType(desc));
+        return null;
+    }
+}
diff --git a/dev-java/java-dep-check/java-dep-check-0.3-r1.ebuild b/dev-java/java-dep-check/java-dep-check-0.3-r1.ebuild
new file mode 100644
index 000000000000..54d806570f99
--- /dev/null
+++ b/dev-java/java-dep-check/java-dep-check-0.3-r1.ebuild
@@ -0,0 +1,31 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+inherit java-pkg-2 java-pkg-simple
+
+DESCRIPTION="Java Dependency checker"
+HOMEPAGE="https://wiki.gentoo.org/wiki/Project:Java"
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="amd64 x86"
+
+COMMON_DEP="
+	dev-java/commons-cli:1
+	dev-java/asm:3"
+RDEPEND=">=virtual/jre-1.5
+	${COMMON_DEP}"
+DEPEND=">=virtual/jdk-1.5
+	${COMMON_DEP}"
+
+JAVA_GENTOO_CLASSPATH="asm-3,commons-cli-1"
+
+src_unpack() {
+	cp "${FILESDIR}/Main-${PV}.java" Main.java || die
+}
+
+src_install() {
+	java-pkg-simple_src_install
+	java-pkg_dolauncher ${PN} --main javadepchecker.Main
+}
diff --git a/dev-java/java-dep-check/java-dep-check-0.4.ebuild b/dev-java/java-dep-check/java-dep-check-0.4.ebuild
new file mode 100644
index 000000000000..b9acd52392e4
--- /dev/null
+++ b/dev-java/java-dep-check/java-dep-check-0.4.ebuild
@@ -0,0 +1,31 @@
+# Copyright 2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+inherit java-pkg-2 java-pkg-simple
+
+DESCRIPTION="Java Dependency checker"
+HOMEPAGE="https://wiki.gentoo.org/wiki/Project:Java"
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+
+COMMON_DEP="
+	dev-java/commons-cli:1
+	dev-java/asm:4"
+RDEPEND=">=virtual/jre-1.8
+	${COMMON_DEP}"
+DEPEND=">=virtual/jdk-1.8
+	${COMMON_DEP}"
+
+JAVA_GENTOO_CLASSPATH="asm-4,commons-cli-1"
+
+src_unpack() {
+	cp "${FILESDIR}/Main-${PV}.java" Main.java || die
+}
+
+src_install() {
+	java-pkg-simple_src_install
+	java-pkg_dolauncher ${PN} --main javadepchecker.Main
+}
diff --git a/dev-java/java-dep-check/metadata.xml b/dev-java/java-dep-check/metadata.xml
new file mode 100644
index 000000000000..952a4b9b605c
--- /dev/null
+++ b/dev-java/java-dep-check/metadata.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>java@gentoo.org</email>
+		<name>Java</name>
+	</maintainer>
+</pkgmetadata>