/*
* Copyright (c) 2013-2017 Cinchapi 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.cinchapi.concourse.cli.util;
import java.text.DecimalFormat;
import com.google.common.base.Preconditions;
/**
* Utils for command line interfaces.
*
* @author Jeff Nelson
*/
public final class CommandLineInterfaces {
/**
* Render a progress bar that shows something is {@code percent} done.
*
* @param percent the percent done
* @return the progress bar to print
*/
public static String renderPercentDone(double percent) {
Preconditions.checkArgument(percent >= 0 && percent <= 100);
DecimalFormat format = new DecimalFormat("##0.00");
StringBuilder sb = new StringBuilder();
sb.append(format.format(percent)).append("% ");
sb.append("[");
for (int i = 0; i < percent; ++i) {
sb.append("=");
}
sb.append(">");
for (int i = (int) Math.ceil(percent); i < 100; ++i) {
sb.append(" ");
}
sb.append("]");
return sb.toString();
}
private CommandLineInterfaces() {/* no-op */}
}