/*

 * Copyright (c) 2019, 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.

 */

package jdk.jfr.internal.consumer;

import java.io.File;

import java.io.IOException;

import java.io.RandomAccessFile;

import java.nio.file.DirectoryStream;

import java.nio.file.Files;

import java.nio.file.Path;

// Protected by modular boundaries.

public abstract class FileAccess {

    public final static FileAccess UNPRIVILIGED = new UnPriviliged();

    public abstract RandomAccessFile openRAF(File f, String mode) throws IOException;

    public abstract DirectoryStream<Path> newDirectoryStream(Path repository) throws IOException;

    public abstract String getAbsolutePath(File f) throws IOException;

    public abstract long length(File f) throws IOException;

    public abstract long fileSize(Path p) throws IOException;

    private static class UnPriviliged extends FileAccess {

        @Override

        public RandomAccessFile openRAF(File f, String mode) throws IOException {

            return new RandomAccessFile(f, mode);

        }

        @Override

        public DirectoryStream<Path> newDirectoryStream(Path dir) throws IOException {

            return Files.newDirectoryStream(dir);

        }

        @Override

        public String getAbsolutePath(File f) throws IOException {

            return f.getAbsolutePath();

        }

        @Override

        public long length(File f) throws IOException {

            return f.length();

        }

        @Override

        public long fileSize(Path p) throws IOException {

            return Files.size(p);

        }

    }

}