Decoder.java

package de.tu.darmstadt.seemoo.ansian.tools.morse;

public class Decoder {
	private MorseCodeCharacterGetter morseCodeCharacterGetter;
	private StringBuffer morseDecodedTextBuffer;

	public Decoder() {
		morseCodeCharacterGetter = new MorseCodeCharacterGetter("morsecode.xml");
	}

	public String decode(String morseEncodedText) {
		if (morseEncodedText.isEmpty())
			return "";
		morseDecodedTextBuffer = new StringBuffer();
		String[] splittedMorseCode = morseEncodedText.split("/");

		for (int wordCounter = 0; wordCounter < splittedMorseCode.length; wordCounter++) {
			String word = splittedMorseCode[wordCounter];
			String[] letters = word.split(" ");

			for (int letterCounter = 0; letterCounter < letters.length; letterCounter++) {
				String letter = letters[letterCounter];
				morseDecodedTextBuffer.append(morseCodeCharacterGetter.getLetterForCode(letter));
			}

			if (wordCounter != (splittedMorseCode.length - 1))
				morseDecodedTextBuffer.append(" ");
		}
		String res = new String(morseDecodedTextBuffer);
		return res;
	}
}