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);

        }

        public String getAbsolutePath(File f) throws IOException {

            return f.getAbsolutePath();

        }

        public long length(File f) throws IOException {

            return f.length();

        }

        @Override

        public long fileSize(Path p) throws IOException {

            return Files.size(p);

        }

    }

}