Android Open Source - Android-Media-Library X M L R P C Serializer

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License

The source code is released under:
Apache License
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Java Source Code

package org.xmlrpc.android;
/*w w w  .  j ava  2  s .  com*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;

class XMLRPCSerializer {
  static final String TAG_NAME = "name";
  static final String TAG_MEMBER = "member";
  static final String TAG_VALUE = "value";
  static final String TAG_DATA = "data";

  static final String TYPE_INT = "int";
  static final String TYPE_I4 = "i4";
  static final String TYPE_I8 = "i8";
  static final String TYPE_DOUBLE = "double";
  static final String TYPE_BOOLEAN = "boolean";
  static final String TYPE_STRING = "string";
  static final String TYPE_DATE_TIME_ISO8601 = "dateTime.iso8601";
  static final String TYPE_BASE64 = "base64";
  static final String TYPE_ARRAY = "array";
  static final String TYPE_STRUCT = "struct";
  
  static SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd'T'HH:mm:ss");

  static void serialize(XmlSerializer serializer, Object object ) throws IOException {
    // check for scalar types:
    if (object instanceof Integer || object instanceof Short || object instanceof Byte) {
      serializer.startTag(null, TYPE_I4).text(object.toString()).endTag(null, TYPE_I4);
    } else
    if (object instanceof Long) {
      serializer.startTag(null, TYPE_I8).text(object.toString()).endTag(null, TYPE_I8);
    } else
    if (object instanceof Double || object instanceof Float) {
      serializer.startTag(null, TYPE_DOUBLE).text(object.toString()).endTag(null, TYPE_DOUBLE);
    } else
    if (object instanceof Boolean) {
      Boolean bool = (Boolean) object;
      String boolStr = bool.booleanValue() ? "1" : "0";
      serializer.startTag(null, TYPE_BOOLEAN).text(boolStr).endTag(null, TYPE_BOOLEAN);
    } else
    if (object instanceof String) {
      serializer.startTag(null, TYPE_STRING).text(object.toString()).endTag(null, TYPE_STRING);
    } else
    if (object instanceof Date || object instanceof Calendar) {
      String dateStr = dateFormat.format(object);
      serializer.startTag(null, TYPE_DATE_TIME_ISO8601).text(dateStr).endTag(null, TYPE_DATE_TIME_ISO8601);
    } else
    if (object instanceof byte[] ){
      String value = new String(Base64Coder.encode((byte[])object));
      serializer.startTag(null, TYPE_BASE64).text(value).endTag(null, TYPE_BASE64);
    } else
    if (object instanceof List) {
      serializer.startTag(null, TYPE_ARRAY).startTag(null, TAG_DATA);
      List<Object> list = (List<Object>) object;
      Iterator<Object> iter = list.iterator();
      while (iter.hasNext()) {
        Object o = iter.next();
        serializer.startTag(null, TAG_VALUE);
        serialize(serializer, o);
        serializer.endTag(null, TAG_VALUE);
      }
      serializer.endTag(null, TAG_DATA).endTag(null, TYPE_ARRAY);
    } else
    if (object instanceof Object[]) {
      serializer.startTag(null, TYPE_ARRAY).startTag(null, TAG_DATA);
      Object[] objects = (Object[]) object;
      for (int i=0; i<objects.length; i++) {
        Object o = objects[i];
        serializer.startTag(null, TAG_VALUE);
        serialize(serializer, o);
        serializer.endTag(null, TAG_VALUE);
      }
      serializer.endTag(null, TAG_DATA).endTag(null, TYPE_ARRAY);
    } else
    if (object instanceof Map) {
      serializer.startTag(null, TYPE_STRUCT);
      Map<String, Object> map = (Map<String, Object>) object;
      Iterator<Entry<String, Object>> iter = map.entrySet().iterator();
      while (iter.hasNext()) {
        Entry<String, Object> entry = iter.next();
        String key = entry.getKey();
        Object value = entry.getValue();

        serializer.startTag(null, TAG_MEMBER);
        serializer.startTag(null, TAG_NAME).text(key).endTag(null, TAG_NAME);
        serializer.startTag(null, TAG_VALUE);
        serialize(serializer, value);
        serializer.endTag(null, TAG_VALUE);
        serializer.endTag(null, TAG_MEMBER);
      }
      serializer.endTag(null, TYPE_STRUCT);
    } else {
      throw new IOException("Cannot serialize " + object);
    }
  }
  
  static Object deserialize(XmlPullParser parser) throws XmlPullParserException, IOException {
    parser.require(XmlPullParser.START_TAG, null, TAG_VALUE);

    parser.nextTag(); 
    String typeNodeName = parser.getName();
    
    Object obj;
    if (typeNodeName.equals(TYPE_INT) || typeNodeName.equals(TYPE_I4)) {
      String value = parser.nextText();
      obj = Integer.parseInt(value);
    } else
    if (typeNodeName.equals(TYPE_I8)) {
      String value = parser.nextText();
      obj = Long.parseLong(value);
    } else
    if (typeNodeName.equals(TYPE_DOUBLE)) {
      String value = parser.nextText();
      obj = Double.parseDouble(value);
    } else
    if (typeNodeName.equals(TYPE_BOOLEAN)) {
      String value = parser.nextText();
      obj = value.equals("1") ? Boolean.TRUE : Boolean.FALSE;
    } else
    if (typeNodeName.equals(TYPE_STRING)) {
      obj = parser.nextText();
    } else
    if (typeNodeName.equals(TYPE_DATE_TIME_ISO8601)) {
      String value = parser.nextText();
      try {
        obj = dateFormat.parseObject(value);
      } catch (ParseException e) {
        throw new IOException("Cannot deserialize dateTime " + value); 
      }
    } else
    if (typeNodeName.equals(TYPE_BASE64)) {
      String value = parser.nextText();
      BufferedReader reader = new BufferedReader(new StringReader(value));
      String line;
      StringBuffer sb = new StringBuffer();
      while ((line = reader.readLine()) != null) {
        sb.append(line);
      }
      obj = Base64Coder.decode(sb.toString());
    } else
    if (typeNodeName.equals(TYPE_ARRAY)) {
      parser.nextTag(); // TAG_DATA (<data>)
      parser.require(XmlPullParser.START_TAG, null, TAG_DATA);

      parser.nextTag();
      List<Object> list = new ArrayList<Object>();
      while (parser.getName().equals(TAG_VALUE)) {
        list.add(deserialize(parser));
        parser.nextTag();
      }
      parser.require(XmlPullParser.END_TAG, null, TAG_DATA);
      parser.nextTag(); // TAG_ARRAY (</array>)
      parser.require(XmlPullParser.END_TAG, null, TYPE_ARRAY);
      obj = list.toArray();
    } else
    if (typeNodeName.equals(TYPE_STRUCT)) {
      parser.nextTag();
      Map<String, Object> map = new HashMap<String, Object>();
      while (parser.getName().equals(TAG_MEMBER)) {
        String memberName = null;
        Object memberValue = null;
        while (true) {
          parser.nextTag();
          String name = parser.getName();
          if (name.equals(TAG_NAME)) {
            memberName = parser.nextText();
          } else
          if (name.equals(TAG_VALUE)) {
            memberValue = deserialize(parser);
          } else {
            break;
          }
        }
        if (memberName != null && memberValue != null) {
          map.put(memberName, memberValue);
        }
        parser.require(XmlPullParser.END_TAG, null, TAG_MEMBER);
        parser.nextTag();
      }
      parser.require(XmlPullParser.END_TAG, null, TYPE_STRUCT);
      obj = map;
    } else {
      throw new IOException("Cannot deserialize " + parser.getName());
    }
    parser.nextTag(); // TAG_VALUE (</value>)
    parser.require(XmlPullParser.END_TAG, null, TAG_VALUE);
    return obj;
  }
}
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