Method normEncoding

basex-core/src/main/java/org/basex/util/Strings.java:227–236

Returns a unified representation of the specified encoding. @param encoding input encoding (can be null) @param dflt return default values if supplied encoding is null or ambiguous @return encoding or null

(final String encoding, final boolean dflt)

   * @return encoding or {@code null}
   */
  public static String normEncoding(final String encoding, final boolean dflt) {
    if(encoding == null) return dflt ? UTF8 : null;
    final String e = encoding.toUpperCase(Locale.ENGLISH);
    if(eq(e, ALL_UTF8)) return UTF8;
    if(e.equals(UTF16LE)) return UTF16LE;
    if(e.equals(UTF16BE)) return UTF16BE;
    if(eq(e, ALL_UTF16))  return dflt ? UTF16BE : UTF16;
    if(eq(e, ALL_UTF32))  return UTF32;
    return encoding;
  }

  /**
   * Checks if the specified encoding is supported.