com.github.rvesse.airline.examples.userguide.parser.ByteCalculator Maven / Gradle / Ivy

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Provides a variety of examples of using Airline

There is a newer version: 3.0.0

/**
 * Copyright (C) 2010-16 the original author or authors.
 *
 * 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.github.rvesse.airline.examples.userguide.parser;

import com.github.rvesse.airline.annotations.Command;
import com.github.rvesse.airline.annotations.Option;
import com.github.rvesse.airline.annotations.restrictions.Required;
import com.github.rvesse.airline.examples.ExampleExecutor;
import com.github.rvesse.airline.examples.ExampleRunnable;
import com.github.rvesse.airline.types.numerics.abbreviated.KiloAs1024;

@Command(name = "byte-calc", description = "Computes the number of bytes")
public class ByteCalculator implements ExampleRunnable {

    
    @Option(name = { "-b", "--bytes"}, description = "Quantity of bytes, optionally expressed in compact form e.g. 1GB", typeConverterProvider = KiloAs1024.class)
    @Required
    private Long bytes;

    @Override
    public int run() {
        System.out.println(String.format("%,3d Bytes", this.bytes));
        return 0;
    }
    
    public static void main(String[] args) {
        ExampleExecutor.executeSingleCommand(ByteCalculator.class, args);
    }
}