org.apache.pulsar.admin.cli.utils.IOUtils Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
/**
* This file is derived from IOUtils from Apache BookKeeper
* http://bookkeeper.apache.org
*/
package org.apache.pulsar.admin.cli.utils;
import java.io.IOException;
public class IOUtils {
/**
* Confirm prompt for the console operations.
*
* @param prompt
* Prompt message to be displayed on console
* @return Returns true if confirmed as 'Y', returns false if confirmed as 'N'
* @throws IOException
*/
public static boolean confirmPrompt(String prompt) throws IOException {
while (true) {
System.out.print(prompt + " (Y or N) ");
StringBuilder responseBuilder = new StringBuilder();
while (true) {
int c = System.in.read();
if (c == -1 || c == '\r' || c == '\n') {
break;
}
responseBuilder.append((char) c);
}
String response = responseBuilder.toString();
if (response.equalsIgnoreCase("y") || response.equalsIgnoreCase("yes")) {
return true;
} else if (response.equalsIgnoreCase("n") || response.equalsIgnoreCase("no")) {
return false;
}
System.out.println("Invalid input: " + response);
// else ask them again
}
}
}