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Example.java
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Example.java
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/*
* MIT License
*
* Copyright (c) 2021. Benjamín Antonio Velasco Guzmán
* Author: Benjamín Antonio Velasco Guzmán <bg@benjaminguzman.dev>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.benjaminguzman;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.Deque;
import java.util.LinkedList;
import java.util.List;
public class Example {
public static void main(String... args) throws IOException {
// use the prompt output stream
PromptOutputStream promptOutStream = new PromptOutputStream(System.out)
.setPrompt("$ ")
.setStatusIcon("🧪");
System.setOut(new PrintStream(promptOutStream, true));
System.out.println("Input multiple lines of text and see how prompt and icon changes");
System.out.println("Enter \"quit\" to exit");
Deque<String> prompts = new LinkedList<>(List.of(">>> ", "# ", "$ ", "> "));
Deque<String> statusIcons = new LinkedList<>(List.of("⏳", "💀", "🙈"));
// read from stdin
BufferedReader bufferedReader = new BufferedReader( // add buffer for optimization
new InputStreamReader( // bridge bytes -> chars (using default encoding)
System.in // Input stream (bytes)
)
);
String line;
while ((line = bufferedReader.readLine()) != null && !line.equalsIgnoreCase("quit")) {
// change status icon and prompt in a circular manner
String statusIcon = statusIcons.poll();
String prompt = prompts.poll();
promptOutStream.setStatusIcon(statusIcon);
promptOutStream.setPrompt(prompt);
statusIcons.add(statusIcon);
prompts.add(prompt);
System.out.println("Text entered: " + line);
// if you just want to print the prompt again and nothing else, use
// promptOutStream.printPrompt();
}
}
}