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/*******************************************************************************
* Copyright (c) 2011 GitHub Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Kevin Sawicki (GitHub Inc.) - initial API and implementation
*******************************************************************************/
package org.eclipse.egit.github.core.client;
import static org.eclipse.egit.github.core.client.IGitHubConstants.DATE_FORMAT;
import static org.eclipse.egit.github.core.client.IGitHubConstants.DATE_FORMAT_V2_1;
import static org.eclipse.egit.github.core.client.IGitHubConstants.DATE_FORMAT_V2_2;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import java.lang.reflect.Type;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
/**
* Formatter for date formats present in the GitHub v2 and v3 API.
*/
public class DateFormatter implements JsonDeserializer<Date>,
JsonSerializer<Date> {
private final DateFormat[] formats;
/**
* Create date formatter
*/
public DateFormatter() {
formats = new DateFormat[3];
formats[0] = new SimpleDateFormat(DATE_FORMAT);
formats[1] = new SimpleDateFormat(DATE_FORMAT_V2_1);
formats[2] = new SimpleDateFormat(DATE_FORMAT_V2_2);
final TimeZone timeZone = TimeZone.getTimeZone("Zulu"); //$NON-NLS-1$
for (DateFormat format : formats)
format.setTimeZone(timeZone);
}
public Date deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
JsonParseException exception = null;
final String value = json.getAsString();
for (DateFormat format : formats)
try {
synchronized (format) {
return format.parse(value);
}
} catch (ParseException e) {
exception = new JsonParseException(e);
}
throw exception;
}
public JsonElement serialize(Date date, Type type,
JsonSerializationContext context) {
final DateFormat primary = formats[0];
String formatted;
synchronized (primary) {
formatted = primary.format(date);
}
return new JsonPrimitive(formatted);
}
}
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