Uebung-Tannenbaum/src/main/java/de/edu/hsfulda/ciip/tdd/TannenbaumUi.java

package de.edu.hsfulda.ciip.tdd;

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.List;

public class TannenbaumUi {

	public static final String TREE_SIZE_PROMPT = "enter tree size:";
	private InputStream input;
	private PrintStream output;

	public TannenbaumUi(InputStream input, PrintStream output) {
		this.input = input;
		this.output = output;
		// TODO Auto-generated constructor stub
	}

	public int getTreeSize() {
		output.println("enter tree size:");
		try {
			int available = input.available();
			int treesize = 0;
			for (int i = 0; i < available; i++) {
				treesize *= 10;
				treesize += input.read() - '0';
			}
			return treesize;
		} catch (IOException e) {
			e.printStackTrace();
			throw new RuntimeException(e);
		}
	}

	public void print(List<String> messageLines) {
		for (String line : messageLines) {
			output.println(line);
		}
	}

}