de.micromata.genome.gwiki.jetty.CmdLineInput.java Source code

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Here is the source code for de.micromata.genome.gwiki.jetty.CmdLineInput.java

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//
// Copyright (C) 2010-2016 Roger Rene Kommer & Micromata GmbH
//
// 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 de.micromata.genome.gwiki.jetty;

import java.io.IOException;

import org.apache.commons.lang3.StringUtils;

public class CmdLineInput {
    public static String readLine() {
        StringBuilder sb = new StringBuilder();
        try {
            do {
                int c = System.in.read();
                if (c == '\n') {
                    String s = sb.toString();
                    if (s.length() > 0 && s.charAt(s.length() - 1) == '\r') {
                        s = s.substring(0, s.length() - 1);
                    }
                    return s;
                }
                sb.append((char) c);
            } while (true);
        } catch (IOException ex) {
            throw new RuntimeException(ex);
        }
    }

    public static void message(String message) {
        System.out.println(message);
    }

    public static boolean ask(String message) {
        System.out.println(message);
        do {
            System.out.print("(Yes/No): ");
            String inp = StringUtils.trim(readLine());
            inp = inp.toLowerCase();
            if (inp.equals("y") == true || inp.equals("yes") == true) {
                return true;
            }
            if (inp.equals("n") == true || inp.equals("no") == true) {
                return false;
            }
        } while (true);
    }

    public static boolean ask(String message, boolean defaultYes) {
        System.out.println(message);
        do {
            if (defaultYes == true) {
                System.out.print("([Yes]/No): ");
            } else {
                System.out.print("(Yes/[No]): ");
            }
            String inp = StringUtils.trim(readLine());
            inp = inp.toLowerCase();
            if (StringUtils.isEmpty(inp) == true) {
                return defaultYes;
            }
            if (inp.equalsIgnoreCase("y") == true || inp.equalsIgnoreCase("yes") == true) {
                return true;
            }
            if (inp.equalsIgnoreCase("n") == true || inp.equalsIgnoreCase("no") == true) {
                return false;
            }
        } while (true);
    }

    public static String getInput(String prompt) {
        return getInput(prompt, null);
    }

    public static String getInput(String prompt, String defaultValue) {
        return getInput(prompt, defaultValue, false);
    }

    public static String getInput(String prompt, String defaultValue, boolean allowEmpty) {
        do {
            if (defaultValue == null) {
                message(prompt + ": ");
            } else {
                message(prompt + "[" + defaultValue + "]: ");
            }
            String inp = readLine();
            inp = StringUtils.trim(inp);
            if (defaultValue != null) {
                if (inp.length() == 0) {
                    return defaultValue;
                }
            }
            if (allowEmpty == true || inp.length() > 0) {
                return inp;
            }
        } while (true);
    }

}