// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.domain.registry.model.smd;

import com.google.appengine.api.datastore.Text;
import com.google.common.base.CharMatcher;

import javax.xml.bind.annotation.adapters.XmlAdapter;

/**
 * {@link XmlAdapter} which removes all whitespace from a string and then converts the result a
 * {@link Text} object.
 */
public class RemoveWhitespaceTextAdapter extends XmlAdapter<String, Text> {

  private static final CharMatcher WHITESPACE = CharMatcher.anyOf(" \t\r\n");

  @Override
  public Text unmarshal(String value) {
    return (value == null) ? null : new Text(WHITESPACE.removeFrom(value));
  }

  @Override
  public String marshal(Text t) {
    return (t == null) ? null : t.getValue();
  }
}