/*
* Copyright (c) 2011 Google Inc.
*
* 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.google.api.client.json.gson;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.JsonGenerator;
import com.google.api.client.json.JsonParser;
import com.google.common.base.Charsets;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.StringReader;
import java.io.Writer;
import java.nio.charset.Charset;
/**
* Low-level JSON library implementation based on GSON.
*
* <p>
* Implementation is thread-safe, and sub-classes must be thread-safe. For maximum efficiency,
* applications should use a single globally-shared instance of the JSON factory.
* </p>
*
* @since 1.3
* @author Yaniv Inbar
*/
public class GsonFactory extends JsonFactory {
@Override
public JsonParser createJsonParser(InputStream in) {
// TODO(mlinder): Parser should try to detect the charset automatically when using GSON
// http://code.google.com/p/google-http-java-client/issues/detail?id=6
return createJsonParser(new InputStreamReader(in, Charsets.UTF_8));
}
@Override
public JsonParser createJsonParser(InputStream in, Charset charset) {
if (charset == null) {
return createJsonParser(in);
}
return createJsonParser(new InputStreamReader(in, charset));
}
@Override
public JsonParser createJsonParser(String value) {
return createJsonParser(new StringReader(value));
}
@Override
public JsonParser createJsonParser(Reader reader) {
return new GsonParser(this, new JsonReader(reader));
}
@Override
public JsonGenerator createJsonGenerator(OutputStream out, Charset enc) {
return createJsonGenerator(new OutputStreamWriter(out, enc));
}
@Override
public JsonGenerator createJsonGenerator(Writer writer) {
return new GsonGenerator(this, new JsonWriter(writer));
}
}