content: /*
   * Copyright (C) 2011 The Android Open Source Project
   *
   * 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.amnesica.kryptey.inputmethod.latin.utils;
  
  import android.content.res.TypedArray;
  
  import org.xmlpull.v1.XmlPullParser;
  import org.xmlpull.v1.XmlPullParserException;
  
  import java.io.IOException;
  
  public final class XmlParseUtils {
    private XmlParseUtils() {
      // This utility class is not publicly instantiable.
    }
  
    @SuppressWarnings("serial")
    public static class ParseException extends XmlPullParserException {
      public ParseException(final String msg) {
        super(msg);
      }
  
      public ParseException(final String msg, final XmlPullParser parser) {
        super(msg + " at " + parser.getPositionDescription());
      }
    }
  
    @SuppressWarnings("serial")
    public static final class IllegalStartTag extends ParseException {
      public IllegalStartTag(final XmlPullParser parser, final String tag, final String parent) {
        super("Illegal start tag " + tag + " in " + parent, parser);
      }
    }
  
    @SuppressWarnings("serial")
    public static final class IllegalEndTag extends ParseException {
      public IllegalEndTag(final XmlPullParser parser, final String tag, final String parent) {
        super("Illegal end tag " + tag + " in " + parent, parser);
      }
    }
  
    @SuppressWarnings("serial")
    public static final class IllegalAttribute extends ParseException {
      public IllegalAttribute(final XmlPullParser parser, final String tag,
                              final String attribute) {
        super("Tag " + tag + " has illegal attribute " + attribute, parser);
      }
    }
  
    @SuppressWarnings("serial")
    public static final class NonEmptyTag extends ParseException {
      public NonEmptyTag(final XmlPullParser parser, final String tag) {
        super(tag + " must be empty tag", parser);
      }
    }
  
    public static void checkEndTag(final String tag, final XmlPullParser parser)
        throws XmlPullParserException, IOException {
      if (parser.next() == XmlPullParser.END_TAG && tag.equals(parser.getName()))
        return;
      throw new NonEmptyTag(parser, tag);
    }
  
    public static void checkAttributeExists(final TypedArray attr, final int attrId,
                                            final String attrName, final String tag, final XmlPullParser parser)
        throws XmlPullParserException {
      if (attr.hasValue(attrId)) {
        return;
      }
      throw new ParseException(
          "No " + attrName + " attribute found in <" + tag + "/>", parser);
    }
  }
  