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/*

 * @test

 * @summary JVM should be able to handle full path (directory path plus

 *          class name) or directory path longer than MAX_PATH specified

 *          in -Xbootclasspath/a on windows.

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 *          java.management

 *          jdk.jartool/sun.tools.jar

 * @run main LongBCP

 */

import java.io.File;

import java.nio.file.Files;

import java.nio.file.FileStore;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.util.Arrays;

import jdk.test.lib.compiler.CompilerUtils;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

public class LongBCP {

    private static final int MAX_PATH = 260;

    public static void main(String args[]) throws Exception {

        Path sourceDir = Paths.get(System.getProperty("test.src"), "test-classes");

        Path classDir = Paths.get(System.getProperty("test.classes"));

        Path destDir = classDir;

        // create a sub-path so that the destDir length is almost MAX_PATH

        // so that the full path (with the class name) will exceed MAX_PATH

        int subDirLen = MAX_PATH - classDir.toString().length() - 2;

        if (subDirLen > 0) {

            char[] chars = new char[subDirLen];

            Arrays.fill(chars, 'x');

            String subPath = new String(chars);

            destDir = Paths.get(System.getProperty("test.classes"), subPath);

        }

        CompilerUtils.compile(sourceDir, destDir);

        String bootCP = "-Xbootclasspath/a:" + destDir.toString();

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

            bootCP, "Hello");

        OutputAnalyzer output = new OutputAnalyzer(pb.start());

        output.shouldContain("Hello World")

              .shouldHaveExitValue(0);

        // increase the length of destDir to slightly over MAX_PATH

        destDir = Paths.get(destDir.toString(), "xxxxx");

        CompilerUtils.compile(sourceDir, destDir);

        bootCP = "-Xbootclasspath/a:" + destDir.toString();

        pb = ProcessTools.createJavaProcessBuilder(

            bootCP, "Hello");

        output = new OutputAnalyzer(pb.start());

        output.shouldContain("Hello World")

              .shouldHaveExitValue(0);

        // create a hello.jar

        sun.tools.jar.Main jarTool = new sun.tools.jar.Main(System.out, System.err, "jar");

        String helloJar = destDir.toString() + File.separator + "hello.jar";

        if (!jarTool.run(new String[]

            {"-cf", helloJar, "-C", destDir.toString(), "Hello.class"})) {

            throw new RuntimeException("Could not write the Hello jar file");

        }

        // run with long bootclasspath to hello.jar

        bootCP = "-Xbootclasspath/a:" + helloJar;

        pb = ProcessTools.createJavaProcessBuilder(

            bootCP, "Hello");

        output = new OutputAnalyzer(pb.start());

        output.shouldContain("Hello World")

              .shouldHaveExitValue(0);

        // relative path tests

        // We currently cannot handle relative path specified in the

        // -Xbootclasspath/a on windows.

        //

        // relative path length within the file system limit

        int fn_max_length = 255;

        // In AUFS file system, the maximal file name length is 242

        FileStore store = Files.getFileStore(new File(".").toPath());

        String fs_type = store.type();

        if ("aufs".equals(fs_type)) {

            fn_max_length = 242;

        }

        char[] chars = new char[fn_max_length];

        Arrays.fill(chars, 'y');

        String subPath = new String(chars);

        destDir = Paths.get(".", subPath);

        CompilerUtils.compile(sourceDir, destDir);

        bootCP = "-Xbootclasspath/a:" + destDir.toString();

        pb = ProcessTools.createJavaProcessBuilder(

            bootCP, "Hello");

        output = new OutputAnalyzer(pb.start());

        // total relative path length exceeds MAX_PATH

        destDir = Paths.get(destDir.toString(), "yyyyyyyy");

        CompilerUtils.compile(sourceDir, destDir);

        bootCP = "-Xbootclasspath/a:" + destDir.toString();

        pb = ProcessTools.createJavaProcessBuilder(

            bootCP, "Hello");

        output = new OutputAnalyzer(pb.start());

    }

}