code: package zemberek.morphology.analysis.tr;
  
  import java.io.IOException;
  import java.util.List;
  import java.util.Map;
  import zemberek.core.io.KeyValueReader;
  import zemberek.core.logging.Log;
  import zemberek.core.turkish.TurkishAlphabet;
  import zemberek.core.turkish.hyphenation.TurkishSyllableExtractor;
  
  public class PronunciationGuesser {
  
    public static final TurkishAlphabet alphabet = TurkishAlphabet.INSTANCE;
    private static Map<String, String> turkishLetterProns;
    private static Map<String, String> englishLetterProns;
    private static Map<String, String> englishPhonesToTurkish;
  
    static {
      turkishLetterProns = loadMap("/tr/phonetics/turkish-letter-names.txt");
      englishLetterProns = loadMap("/tr/phonetics/english-letter-names.txt");
      englishPhonesToTurkish = loadMap("/tr/phonetics/english-phones-to-turkish.txt");
    }
  
    private static Map<String, String> loadMap(String resource) {
      try {
        return new KeyValueReader("=", "##").loadFromStream(
            PronunciationGuesser.class.getResourceAsStream(resource),
            "utf-8");
      } catch (IOException e) {
        throw new RuntimeException(e.getMessage());
      }
    }
  
    public String toTurkishLetterPronunciations(String w) {
      if (alphabet.containsDigit(w)) {
        return toTurkishLetterPronunciationWithDigit(w);
      }
      StringBuilder sb = new StringBuilder();
      for (int i = 0; i < w.length(); i++) {
        char c = w.charAt(i);
        if (c == '-') {
          continue;
        }
        String key = String.valueOf(c);
        if (turkishLetterProns.containsKey(key)) {
          // most abbreviations ends with k uses `ka` sounds.
          if (i == w.length() - 1 && key.equals("k")) {
            sb.append("ka");
          } else {
            sb.append(turkishLetterProns.get(key));
          }
        } else {
          if(Log.isDebug()) {
            Log.debug("Cannot guess pronunciation of letter [" + key + "] in :[" + w + "]");
          }
        }
      }
      return sb.toString();
    }
  
    private String toTurkishLetterPronunciationWithDigit(String in) {
      List<String> pieces = TurkishNumbers.separateNumbers(in);
      StringBuilder sb = new StringBuilder();
      int i = 0;
      for (String piece : pieces) {
        if (alphabet.containsDigit(piece)) {
          sb.append(TurkishNumbers.convertNumberToString(piece));
          i++;
          continue;
        }
        if (i < pieces.size() - 1) {
          sb.append(toTurkishLetterPronunciations(piece));
        } else {
          sb.append(replaceEnglishSpecificChars(piece));
        }
        i++;
      }
      return sb.toString().replaceAll("[ ]+", "");
    }
  
    public String replaceEnglishSpecificChars(String w) {
      StringBuilder sb = new StringBuilder();
      for (int i = 0; i < w.length(); i++) {
        char c = w.charAt(i);
        switch (c) {
          case 'w':
            sb.append("v");
            break;
          case 'q':
            sb.append("k");
            break;
          case 'x':
            sb.append("ks");
          case '-':
          case '\'':
            break;
          default:
            sb.append(c);
        }
      }
      return sb.toString();
    }
  
    private static TurkishSyllableExtractor extractorForAbbrv = TurkishSyllableExtractor.STRICT;
  
    /**
     * Tries to guess turkish abbreviation pronunciation.
     */
    public String guessForAbbreviation(String input) {
      List<String> syllables = extractorForAbbrv.getSyllables(input);
  
      boolean firstTwoCons = false;
      if (input.length() > 2) {
        if (!alphabet.containsVowel(input.substring(0, 2))) {
          firstTwoCons = true;
        }
      }
  
      if (syllables.size() == 0 || input.length() < 3 || firstTwoCons) {
        return toTurkishLetterPronunciations(input);
      } else {
        return replaceEnglishSpecificChars(input);
      }
  
    }
  
  }
  