com.github.andyshao.system.HelpTask Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of Gear Show documentation

Enhance and formating the coding of JDK

The newest version!

package com.github.andyshao.system;

import com.github.andyshao.nio.BufferReader;
import com.github.andyshao.nio.ByteBufferReader;

import java.io.IOException;
import java.io.InputStream;
import java.nio.channels.Channels;

/**
 * 
 * Title:

 * Descript:

 * Copyright: Copryright(c) Sep 10, 2015

 * Encoding:UNIX UTF-8
 * 
 * @author Andy.Shao
 *
 */
public class HelpTask implements Task {
    /**key words*/
    public static final String KEY_WORDS = "-help";
    private static final String TARGET = "com/github/andyshao/system/help.txt";
    private volatile Task nextTask = Task.EMPTY_TASK;

    @Override
    public Task getNextTask() {
        return this.nextTask;
    }

    @Override
    public boolean isDuty(String[] args) {
        if (args == null || args.length == 0) return false;
        else return args[0].equals(HelpTask.KEY_WORDS);
    }

    @Override
    public void process(String[] args) {
        try (InputStream inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream(HelpTask.TARGET);
            ByteBufferReader reader = new ByteBufferReader(Channels.newChannel(inputStream));) {
            reader.setFindSeparatePoint((buffer) -> new BufferReader.SeparatePoint(-1));
            System.out.println(new String(reader.read()));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * set next task
     * @param nextTask next task
     */
    public void setNextTask(Task nextTask) {
        this.nextTask = nextTask;
    }

}