protected static String encodeDocInfo(Map<String, String> info) {
if (info == null) {
return null;
}
StringBuilder buf = new StringBuilder();
for (Entry<String, String> e : info.entrySet()) {
if (buf.length() > 0) {
buf.append(';');
}
buf.append(e.getKey());
if (e.getValue() != null) {
buf.append(':').append(e.getValue());
}
}
return buf.length() > 0 ? buf.toString() : null;
}
