/*
* Copyright 2014 Nicolas Morel
*
* 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.github.nmorel.gwtjackson.client.deser.array.dd;
import java.util.ArrayList;
import java.util.List;
import com.github.nmorel.gwtjackson.client.JsonDeserializationContext;
import com.github.nmorel.gwtjackson.client.JsonDeserializer;
import com.github.nmorel.gwtjackson.client.JsonDeserializerParameters;
import com.github.nmorel.gwtjackson.client.deser.BaseNumberJsonDeserializer.ByteJsonDeserializer;
import com.github.nmorel.gwtjackson.client.stream.JsonReader;
import com.github.nmorel.gwtjackson.client.stream.JsonToken;
import com.github.nmorel.gwtjackson.client.utils.Base64;
/**
* Default {@link JsonDeserializer} implementation for 2D array of byte.
*
* @author Nicolas Morel
*/
public class PrimitiveByteArray2dJsonDeserializer extends AbstractArray2dJsonDeserializer<byte[][]> {
private static final PrimitiveByteArray2dJsonDeserializer INSTANCE = new PrimitiveByteArray2dJsonDeserializer();
/**
* @return an instance of {@link PrimitiveByteArray2dJsonDeserializer}
*/
public static PrimitiveByteArray2dJsonDeserializer getInstance() {
return INSTANCE;
}
private PrimitiveByteArray2dJsonDeserializer() { }
@Override
public byte[][] doDeserialize( JsonReader reader, JsonDeserializationContext ctx, JsonDeserializerParameters params ) {
byte[][] result;
reader.beginArray();
JsonToken token = reader.peek();
if ( JsonToken.END_ARRAY == token ) {
// empty array
result = new byte[0][0];
} else if ( JsonToken.STRING == token ) {
// byte[] are encoded as String
List<byte[]> list = new ArrayList<byte[]>();
int size = 0;
while ( JsonToken.END_ARRAY != token ) {
byte[] decoded = Base64.decode( reader.nextString() ).getBytes();
size = Math.max( size, decoded.length );
list.add( decoded );
token = reader.peek();
}
result = new byte[list.size()][size];
int i = 0;
for ( byte[] value : list ) {
if ( null != value ) {
result[i] = value;
}
i++;
}
} else {
List<List<Byte>> list = doDeserializeIntoList( reader, ctx, ByteJsonDeserializer.getInstance(), params, token );
List<Byte> firstList = list.get( 0 );
if ( firstList.isEmpty() ) {
result = new byte[list.size()][0];
} else {
result = new byte[list.size()][firstList.size()];
int i = 0;
int j;
for ( List<Byte> innerList : list ) {
j = 0;
for ( Byte value : innerList ) {
if ( null != value ) {
result[i][j] = value;
}
j++;
}
i++;
}
}
}
reader.endArray();
return result;
}
}