001package com.pi4j.io.w1;
002
003/*
004 * #%L
005 * **********************************************************************
006 * ORGANIZATION  :  Pi4J
007 * PROJECT       :  Pi4J :: Java Library (Core)
008 * FILENAME      :  W1BaseDevice.java
009 *
010 * This file is part of the Pi4J project. More information about
011 * this project can be found here:  https://www.pi4j.com/
012 * **********************************************************************
013 * %%
014 * Copyright (C) 2012 - 2019 Pi4J
015 * %%
016 * This program is free software: you can redistribute it and/or modify
017 * it under the terms of the GNU Lesser General Public License as
018 * published by the Free Software Foundation, either version 3 of the
019 * License, or (at your option) any later version.
020 *
021 * This program is distributed in the hope that it will be useful,
022 * but WITHOUT ANY WARRANTY; without even the implied warranty of
023 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
024 * GNU General Lesser Public License for more details.
025 *
026 * You should have received a copy of the GNU General Lesser Public
027 * License along with this program.  If not, see
028 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
029 * #L%
030 */
031
032import java.io.File;
033import java.io.IOException;
034import java.nio.file.Files;
035
036/**
037 * @author Peter Schuebl
038 */
039public abstract class W1BaseDevice implements W1Device {
040
041    private final String id;
042
043    private String name;
044
045    private File deviceDir;
046
047    @Override
048    public String getName() {
049        return name;
050    }
051
052    @Override
053    public String getId() {
054        return id;
055    }
056
057    public W1BaseDevice(final File deviceDir) {
058        String deviceName;
059        try {
060            deviceName = new String(Files.readAllBytes(new File(deviceDir, "name").toPath()));
061        } catch (IOException e) {
062            // FIXME logging
063            deviceName = deviceDir.getName();
064        }
065        name = deviceName;
066        id = deviceName;
067        this.deviceDir = deviceDir;
068    }
069
070    @Override
071    public boolean equals(Object obj) {
072        return obj instanceof W1Device && id.equals(((W1Device) obj).getId());
073    }
074
075    @Override
076    public int hashCode() {
077        return id.hashCode();
078    }
079
080    @Override
081    public String getValue() throws IOException {
082        return new String(Files.readAllBytes(new File(deviceDir, "w1_slave").toPath()));
083    }
084}