it.tidalwave.mobile.android.util.UriEncoder Maven / Gradle / Ivy

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/***********************************************************************************************************************
 *
 * blueBill Mobile - Android - open source birding
 * Copyright (C) 2009-2011 by Tidalwave s.a.s. (http://www.tidalwave.it)
 *
 ***********************************************************************************************************************
 *
 * 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.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://bluebill.tidalwave.it/mobile
 * SCM: https://java.net/hg/bluebill-mobile~android-src
 *
 **********************************************************************************************************************/
package it.tidalwave.mobile.android.util;

import javax.annotation.CheckForNull;

/***********************************************************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 **********************************************************************************************************************/
public final class UriEncoder
  {
    @CheckForNull
    public static String uriEncoded (final @CheckForNull String string)
      {
        if (string == null)
          {
            return null;
          }

        final StringBuffer buffer = new StringBuffer(string.length());

        for (final char c : string.toCharArray())
          {
            switch (c)
              {
                case '#':
                    buffer.append("%23");
                    break;
                case '%':
                    buffer.append("%25");
                    break;
                case '\'':
                    buffer.append("%27");
                    break;
                case '?':
                    buffer.append("%3f");
                    break;
                default:
                    if ((int)c >= 128)
                      {
                        buffer.append(String.format("%%%x", (int)c));
                      }
                    else
                      {
                        buffer.append(c);
                      }
              }
          }

        return buffer.toString();
      }
  }