Fully asm based, doesn't report virtuals with VM providers and handles directory entries in package.env CLASSPATHs.

(Portage version: 2.2_rc11/cvs/Linux 2.6.26-gentoo-r1 i686)

1 files changed, 276 insertions, 0 deletions

diff --git a/dev-java/java-dep-check/files/Main-0.2.java b/dev-java/java-dep-check/files/Main-0.2.java
new file mode 100644
index 000000000000..daaa3ea1112b
--- /dev/null
+++ b/dev-java/java-dep-check/files/Main-0.2.java
@@ -0,0 +1,276 @@
+/*
+ * 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.util.HashSet;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+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.Set;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+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
+ */
+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.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 checkPkg(File env) {
+        boolean needed = 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)) {
+                    System.out.println(pkg);
+                    needed = false;
+                }
+            }
+        } 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;
+    }
+
+    /**
+     * @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.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) {
+        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);
+        }
+        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(owner);
+            }
+            @Override
+            public void visitMethodInsn(int opcode, String owner, String name, String desc) {
+                addDep(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;
+    }
+}