/*
 * Copyright (c) 2013 IBM Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 */
package com.ibm.wala.examples.drivers;

import com.ibm.wala.classLoader.Language;
import com.ibm.wala.core.tests.callGraph.CallGraphTestUtil;
import com.ibm.wala.ipa.callgraph.AnalysisCacheImpl;
import com.ibm.wala.ipa.callgraph.AnalysisOptions;
import com.ibm.wala.ipa.callgraph.AnalysisScope;
import com.ibm.wala.ipa.callgraph.CallGraph;
import com.ibm.wala.ipa.callgraph.CallGraphBuilderCancelException;
import com.ibm.wala.ipa.callgraph.Entrypoint;
import com.ibm.wala.ipa.callgraph.impl.Util;
import com.ibm.wala.ipa.callgraph.propagation.InstanceKey;
import com.ibm.wala.ipa.callgraph.propagation.PointerAnalysis;
import com.ibm.wala.ipa.cha.ClassHierarchy;
import com.ibm.wala.ipa.cha.ClassHierarchyException;
import com.ibm.wala.ipa.cha.ClassHierarchyFactory;
import com.ibm.wala.util.config.AnalysisScopeReader;
import com.ibm.wala.util.io.CommandLine;
import com.ibm.wala.util.io.FileProvider;
import com.ibm.wala.viz.viewer.WalaViewer;
import java.io.File;
import java.io.IOException;
import java.util.Properties;

/**
 * Allows viewing the ClassHeirarcy, CallGraph and Pointer Analysis built from a given classpath.
 *
 * @author yinnonh
 */
public class JavaViewerDriver {
  public static void main(String[] args)
      throws ClassHierarchyException, IOException, CallGraphBuilderCancelException {
    Properties p = CommandLine.parse(args);
    validateCommandLine(p);
    run(
        p.getProperty("appClassPath"),
        p.getProperty("exclusionFile", CallGraphTestUtil.REGRESSION_EXCLUSIONS));
  }

  public static void validateCommandLine(Properties p) {
    if (p.get("appClassPath") == null) {
      throw new UnsupportedOperationException("expected command-line to include -appClassPath");
    }
  }

  private static void run(String classPath, String exclusionFilePath)
      throws IOException, ClassHierarchyException, CallGraphBuilderCancelException {

    File exclusionFile = (new FileProvider()).getFile(exclusionFilePath);
    AnalysisScope scope =
        AnalysisScopeReader.makeJavaBinaryAnalysisScope(
            classPath,
            exclusionFile != null
                ? exclusionFile
                : new File(CallGraphTestUtil.REGRESSION_EXCLUSIONS));

    ClassHierarchy cha = ClassHierarchyFactory.make(scope);

    Iterable<Entrypoint> entrypoints =
        com.ibm.wala.ipa.callgraph.impl.Util.makeMainEntrypoints(scope, cha);
    AnalysisOptions options = new AnalysisOptions(scope, entrypoints);

    // //
    // build the call graph
    // //
    com.ibm.wala.ipa.callgraph.CallGraphBuilder<InstanceKey> builder =
        Util.makeZeroCFABuilder(Language.JAVA, options, new AnalysisCacheImpl(), cha, scope);
    CallGraph cg = builder.makeCallGraph(options, null);

    PointerAnalysis<InstanceKey> pa = builder.getPointerAnalysis();
    @SuppressWarnings("unused")
    WalaViewer walaViewer = new WalaViewer(cg, pa);
  }
}
