/*
 * Copyright (c) 2013 Menny Even-Danan
 *
 * 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.anysoftkeyboard.utils;

import java.io.IOException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

public class XmlUtils {

  public static void beginDocument(XmlPullParser parser, String firstElementName)
      throws XmlPullParserException, IOException {
    int type;
    while ((type = parser.next()) != XmlPullParser.START_TAG && type != XmlPullParser.END_DOCUMENT)
      ;

    if (type != XmlPullParser.START_TAG) {
      throw new XmlPullParserException("No start tag found");
    }

    if (!parser.getName().equals(firstElementName)) {
      throw new XmlPullParserException(
          "Unexpected start tag: found " + parser.getName() + ", expected " + firstElementName);
    }
  }

  public static boolean nextElement(XmlPullParser parser)
      throws XmlPullParserException, IOException {
    int type = 0;
    while ((type = parser.next()) != XmlPullParser.START_TAG && type != XmlPullParser.END_DOCUMENT)
      ;

    return type != XmlPullParser.END_DOCUMENT;
  }
}
