Mercurial > hg > Members > sugi > MessagePack-java
view src/main/java/org/msgpack/util/json/JSONUnpacker.java @ 0:cb825acd883a
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author | sugi |
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date | Sat, 18 Oct 2014 15:06:15 +0900 |
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// // MessagePack for Java // // Copyright (C) 2009 - 2013 FURUHASHI Sadayuki // // 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 org.msgpack.util.json; import java.io.IOException; import java.io.InputStream; import java.io.Reader; import java.io.InputStreamReader; import java.util.List; import java.util.Map; import java.util.Iterator; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException; import org.msgpack.MessagePack; import org.msgpack.unpacker.Converter; import org.msgpack.type.Value; import org.msgpack.type.ValueFactory; public class JSONUnpacker extends Converter { protected Reader in; private JSONParser parser; public JSONUnpacker(InputStream in) { this(new MessagePack(), in); } public JSONUnpacker(MessagePack msgpack, InputStream in) { this(msgpack, new InputStreamReader(in)); } JSONUnpacker(MessagePack msgpack, Reader in) { super(msgpack, null); this.in = in; this.parser = new JSONParser(); } @Override protected Value nextValue() throws IOException { try { Object obj = parser.parse(in); return objectToValue(obj); } catch (ParseException e) { throw new IOException(e); // TODO error FormatException } catch (IOException e) { throw new IOException(e); // TODO error FormatException } } @SuppressWarnings("rawtypes") private Value objectToValue(Object obj) { if (obj instanceof String) { return ValueFactory.createRawValue((String) obj); } else if (obj instanceof Integer) { return ValueFactory.createIntegerValue((Integer) obj); } else if (obj instanceof Long) { return ValueFactory.createIntegerValue((Long) obj); } else if (obj instanceof Map) { return mapToValue((Map) obj); } else if (obj instanceof List) { return listToValue((List) obj); } else if (obj instanceof Boolean) { return ValueFactory.createBooleanValue((Boolean) obj); } else if (obj instanceof Double) { return ValueFactory.createFloatValue((Double) obj); } else { return ValueFactory.createNilValue(); } } @SuppressWarnings("rawtypes") private Value listToValue(List list) { Value[] array = new Value[list.size()]; for (int i = 0; i < array.length; i++) { array[i] = objectToValue(list.get(i)); } return ValueFactory.createArrayValue(array, true); } @SuppressWarnings({ "unchecked", "rawtypes" }) private Value mapToValue(Map map) { Value[] kvs = new Value[map.size() * 2]; Iterator<Map.Entry> it = map.entrySet().iterator(); for (int i = 0; i < kvs.length; i += 2) { Map.Entry pair = it.next(); kvs[i] = objectToValue(pair.getKey()); kvs[i + 1] = objectToValue(pair.getValue()); } return ValueFactory.createMapValue(kvs, true); } @Override public int getReadByteCount() { throw new UnsupportedOperationException("Not implemented yet"); } @Override public void resetReadByteCount() { throw new UnsupportedOperationException("Not implemented yet"); } public void close() throws IOException { in.close(); super.close(); } }