com.byteground.Platform Maven / Gradle / Ivy

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/**
 * Copyright © 2009-2014 ByTeGround, Inc
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.byteground;

import java.util.HashMap;
import java.util.Map;

final public class Platform {
    public static final Platform UNKNOWN = new Platform(Os.UNKNOWN, Architecture.UNKNOWN);
    public static final Platform WINDOWS_32 = new Platform(Os.WINDOWS, Architecture._32);
    public static final Platform WINDOWS_64 = new Platform(Os.WINDOWS, Architecture._64);
    public static final Platform LINUX_32 = new Platform(Os.LINUX, Architecture._32);
    public static final Platform LINUX_64 = new Platform(Os.LINUX, Architecture._64);
    public static final Platform MACOSX_32 = new Platform(Os.MACOSX, Architecture._32);
    public static final Platform MACOSX_64 = new Platform(Os.MACOSX, Architecture._64);
    private static final Platform[] PLATFORMS = new Platform[]{
            WINDOWS_32, WINDOWS_64,
            LINUX_32, LINUX_64,
            MACOSX_32, MACOSX_64
    };
    private static final Map PLATFORM_MAP = new HashMap();
    static {
        for (Platform platform : PLATFORMS) {
            PLATFORM_MAP.put(platform.name, platform);
        }
    }

    public static Platform[] getAll() {
        return PLATFORMS;
    }

    public static Platform getByName(String name) {
        Platform platform = PLATFORM_MAP.get(name);
        if (platform == null)
            return UNKNOWN;
        else
            return platform;
    }

    public static Boolean isCurrent(Platform platform) {
        return platform != null && platform.equals(getCurrent());
    }

    // @see http://lopica.sourceforge.net/os.html
    public static Platform getCurrent() {
        final Os os = Os.getCurrent();
        final Architecture architecture = Architecture.getCurrent();

        final Platform platform = PLATFORM_MAP.get(os.name + architecture.name);
        if (platform == null)
            return UNKNOWN;
        else
            return platform;
    }

    private Platform(Os os, Architecture architecture) {
        this.os = os;
        this.architecture = architecture;
        this.name = this.os.name + this.architecture.name;
    }

    @Override
    public int hashCode() {
        return this.name.hashCode();
    }

    @Override
    public boolean equals(Object o) {
        if (o == this)
            return true;
        else if (o instanceof Platform) {
            Platform p = (Platform) o;
            return this.name.equals(p.name);
        } else
            return false;
    }

    @Override
    public String toString() {
        return this.name;
    }

    public final Os os;
    public final Architecture architecture;
    public final String name;
}