/*

 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.*;

import java.util.*;

import javax.tools.*;

import com.sun.tools.javap.*;

/*

 * @test

 * @bug 4777949

 * @summary Warn javap usage on package with simple name

 */

public class T4777949 {

    public static void main(String... args) throws Exception {

        new T4777949().run();

    }

    void run() throws Exception {

        File javaFile = writeTestFile();

        File classFile = compileTestFile(javaFile);

        test(".", "p.q.r.Test", false);

        test("p", "q.r.Test", true);

        test("p/q", "r.Test", true);

        test("p/q/r", "Test", true);

        test(".", "p.q.r.Test.Inner", false);

        test(".", "p.q.r.Test$Inner", false);

        test("p", "q.r.Test.Inner", true);

        test("p", "q.r.Test$Inner", true);

        if (errors > 0)

            throw new Exception(errors + " errors found");

    }

    void test(String classPath, String className, boolean expectWarnings) {

        List<Diagnostic<? extends JavaFileObject>> diags =

            javap(Arrays.asList("-classpath", classPath), Arrays.asList(className));

        boolean foundWarnings = false;

        for (Diagnostic<? extends JavaFileObject> d: diags) {

            if (d.getKind() == Diagnostic.Kind.WARNING)

                foundWarnings = true;

        }

    }

    File writeTestFile() throws IOException {

        File f = new File("Test.java");

        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(f)));

        out.println("package p.q.r;");

        out.println("class Test { class Inner { } }");

        out.close();

        return f;

    }

    File compileTestFile(File f) {

        int rc = com.sun.tools.javac.Main.compile(new String[] { "-d", ".", f.getPath() });

        if (rc != 0)

            throw new Error("compilation failed. rc=" + rc);

        String path = f.getPath();

        return new File(path.substring(0, path.length() - 5) + ".class");

    }

    List<Diagnostic<? extends JavaFileObject>> javap(List<String> args, List<String> classes) {

        DiagnosticCollector<JavaFileObject> dc = new DiagnosticCollector<JavaFileObject>();

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw);

        JavaFileManager fm = JavapFileManager.create(dc, pw);

        JavapTask t = new JavapTask(pw, fm, dc, args, classes);

        boolean ok = t.run();

        List<Diagnostic<? extends JavaFileObject>> diags = dc.getDiagnostics();

        if (!ok)

            error("javap failed unexpectedly");

        System.err.println("args=" + args + " classes=" + classes + "\n"

                           + diags + "\n"

                           + sw);

        return diags;

    }

    void error(String msg) {

        System.err.println("error: " + msg);

        errors++;

    }

    int errors;

}