}

    @Override
    public String findTool(String toolName) {
        Path toRet = findTool(toolName, Paths.get(getJavaHome()).normalize());
        if (toRet != null) {
            return toRet.toAbsolutePath().toString();
        }
        return null;
    }

    private static Path findTool(String toolName, Path installDir) {
        Path bin = installDir.resolve("bin"); // NOI18N

            jtc.setJavaHome(Paths.get(javahome.getValue()).normalize().toString());
        } else {
            throw new MisconfiguredToolchainException(
                    "Non-existing JDK home configuration at " + normal.toAbsolutePath());
        }

        return jtc;
    }

    @Override
    public ToolchainPrivate createDefaultToolchain() {
        // not sure it's necessary to provide a default toolchain here.

                "maven.repo.local",
                System.getProperty("user.home") + File.separator + ".m2" + File.separator + "repository");
        Path absolutePath = Paths.get(localRepoPath).toAbsolutePath();
        config.setLocalRepository(MavenRepositorySystem.createArtifactRepository(
                "local", absolutePath, new DefaultRepositoryLayout(), null, null));

                    .resolve(string.substring(2))
                    .normalize()
                    .toAbsolutePath();
        } else {
            // resolve based on $CWD
            return Paths.get(string).normalize().toAbsolutePath();
        }
    }

    private VersionFilter buildVersionFilter(String filterExpression) {

            str = str.substring(1, length - 1);
        }
        return str;
    }

    @Nonnull
    public static Path getCanonicalPath(Path path) {
        requireNonNull(path, "path");
        return path.toAbsolutePath().normalize();
    }

    @Nonnull
    public static Map<String, String> toMap(Properties properties) {
        requireNonNull(properties, "properties");
        HashMap<String, String> map = new HashMap<>();

        assertArgumentNotNull("pathToCheck", pathToCheck);
        assertArgumentNotNull("baseDirectory", baseDirectory);

        final Path normalizedPath = pathToCheck.toAbsolutePath().normalize();
        final Path normalizedBase = baseDirectory.toAbsolutePath().normalize();
        return normalizedPath.startsWith(normalizedBase);
    }

    /**
     * Validates that a given file is safe and does not attempt path traversal attacks.

        Model model = builder.build(session, project, src);
        write(model, tgt);
    }

    private void deferDeleteFile(Path generatedFile) {
        toDelete.add(generatedFile.toAbsolutePath());
    }

    @PreDestroy
    private void doDeleteFiles() {
        for (Path file : toDelete) {
            try {
                Files.delete(file);
            } catch (IOException e) {

	  public static void main( String[] args ) throws Exception
	  {
	    setDefault( new Downloader() );
	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
	  }
	}
	END
  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
  verbose " - Compiling Downloader.java ..."

                } else {
                    Path topDirectory = mavenSession.getTopDirectory();
                    Path locationPath = Paths.get(location).toAbsolutePath().normalize();
                    if (locationPath.startsWith(topDirectory)) {
                        locationPath = topDirectory.relativize(locationPath);
                    }

            File currentPom = project.getFile();
            if (currentPom != null) {
                MavenSession session = event.getSession();
                Path current = currentPom.toPath().toAbsolutePath().normalize();
                Path topDirectory = session.getTopDirectory();
                if (topDirectory != null && current.startsWith(topDirectory)) {
                    current = topDirectory.relativize(current);