/*

 * Copyright (c) 2011, 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.

 */

/*

 * @test

 * @bug 6987384

 * @summary -XprintProcessorRoundsInfo message printed with different timing than previous

 * @library ../../../lib

 * @build JavacTestingAbstractProcessor Test TestWithXstdout

 * @run main TestWithXstdout

 */

import java.io.*;

import java.nio.charset.*;

import java.nio.file.*;

import java.util.*;

public class TestWithXstdout {

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

        File testSrc = new File(System.getProperty("test.src"));

        File testClasses = new File(System.getProperty("test.classes"));

        File stdout = new File("stdout.out");

        run_javac("-XDrawDiagnostics",

                "-XprintProcessorInfo",

                "-Werror",

                "-proc:only",

                "-processor",  "Test",

                "-Xstdout", stdout.getPath(),

                "-classpath", testClasses.getPath(),

                new File(testSrc, "Test.java").getPath());

        boolean ok = compare(stdout, new File(testSrc, "Test.out"));

        if (!ok)

            throw new Exception("differences found");

    }

    static void run_javac(String... args) throws IOException, InterruptedException {

        File javaHome = new File(System.getProperty("java.home"));

        if (javaHome.getName().equals("jre"))

            javaHome = javaHome.getParentFile();

        File javac = new File(new File(javaHome, "bin"), "javac");

        List<String> opts = new ArrayList<>();

        opts.add(javac.getPath());

        opts.addAll(Arrays.asList(args));

        System.out.println("exec: " + opts);

        ProcessBuilder pb = new ProcessBuilder(opts);

        pb.redirectErrorStream();

        Process p = pb.start();

        try (BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()))) {

            String line;

            while ((line = r.readLine()) != null)

                System.out.println();

        }

        int rc = p.waitFor();

        if (rc != 0)

            System.out.println("javac exited, rc=" + rc);

    }

    static boolean compare(File a, File b) throws IOException {

        List<String> aLines = Files.readAllLines(a.toPath(), Charset.defaultCharset());

        List<String> bLines = Files.readAllLines(b.toPath(), Charset.defaultCharset());

        System.out.println(a + ": " + aLines.size() + " lines");

        System.out.println(b + ": " + bLines.size() + " lines");

        return aLines.equals(bLines);

    }

}