private static void printUnicodePropertyValuesAndAliases()

in jflex/src/main/java/jflex/Main.java [245:291]
46 lines of code
10 McCabe index (conditional complexity)

  private static void printUnicodePropertyValuesAndAliases(String unicodeVersion)
      throws UnicodeProperties.UnsupportedUnicodeVersionException {
    Pattern versionPattern = Pattern.compile("(\\d+)(?:\\.(\\d+))?(?:\\.\\d+)?");
    Matcher matcher = versionPattern.matcher(unicodeVersion);
    if (!matcher.matches()) {
      throw new UnicodeProperties.UnsupportedUnicodeVersionException();
    }
    String underscoreVersion =
        matcher.group(1) + (null == matcher.group(2) ? "_0" : "_" + matcher.group(2));

    String[] propertyValues;
    String[] propertyValueAliases;
    try {
      Class<?> clazz = Class.forName("jflex.unicode.data.Unicode_" + underscoreVersion);
      Field field = clazz.getField("propertyValues");
      propertyValues = (String[]) field.get(null);
      field = clazz.getField("propertyValueAliases");
      propertyValueAliases = (String[]) field.get(null);
    } catch (Exception e) {
      throw new UnicodeProperties.UnsupportedUnicodeVersionException(e);
    }
    SortedMap<String, SortedSet<String>> propertyValuesToAliases = new TreeMap<>();
    for (String value : propertyValues) {
      propertyValuesToAliases.put(value, new TreeSet<String>());
    }
    for (int i = 0; i < propertyValueAliases.length - 1; i += 2) {
      String alias = propertyValueAliases[i];
      String value = propertyValueAliases[i + 1];
      SortedSet<String> aliases = propertyValuesToAliases.get(value);
      if (null == aliases) {
        aliases = new TreeSet<>();
        propertyValuesToAliases.put(value, aliases);
      }
      aliases.add(alias);
    }
    for (Map.Entry<String, SortedSet<String>> entry : propertyValuesToAliases.entrySet()) {
      String value = entry.getKey();
      SortedSet<String> aliases = entry.getValue();
      Out.print(value);
      if (aliases.size() > 0) {
        for (String alias : aliases) {
          Out.print(", " + alias);
        }
      }
      Out.println("");
    }
  }