cdm/src/main/java/ucar/nc2/util/EscapeStrings.java
public static String backslashToDAP(String bs) {
    StringBuilder buf = new StringBuilder();
    int len = bs.length();
    for (int i = 0; i < len; i++) {
      char c = bs.charAt(i);
      if (i < (len - 1) && c == '\\') {
        c = bs.charAt(++i);
      }
      if (_allowableInDAP.indexOf(c) < 0) {
        buf.append(_URIEscape);
        // convert the char to hex
        String ashex = Integer.toHexString((int) c);
        if (ashex.length() < 2) buf.append('0');
        buf.append(ashex);
      } else
        buf.append(c);
    }
    return buf.toString();
  }
public static String backslashToDAP(String bs) {
    StringBuilder buf = new StringBuilder();
    int len = bs.length();
    for (int i = 0; i < len; i++) {
      char c = bs.charAt(i);
      if (i < (len - 1) && c == '\\') {
        c = bs.charAt(++i);
      }
      if (_allowableInDAP.indexOf(c) < 0) {
        buf.append(_URIEscape);
        // convert the char to hex
        String ashex = Integer.toHexString((int) c);
        if (ashex.length() < 2) buf.append('0');
        buf.append(ashex);
      } else
        buf.append(c);
    }
    return buf.toString();
  }
Given a backslash escaped name,
convert to a DAP escaped name

@param bs the string to DAP encode; may have backslash escapes
@return escaped string