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/*
* Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.message.internal;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.inject.Singleton;
import org.glassfish.jersey.message.MessageUtils;
/**
*
* @author Paul Sandoz
*/
@Produces({"text/plain", "*/*"})
@Consumes({"text/plain", "*/*"})
@Singleton
public final class ReaderProvider extends AbstractMessageReaderWriterProvider {
@Override
public boolean isReadable(final Class type, final Type genericType, final Annotation[] annotations,
final MediaType mediaType) {
return Reader.class == type;
}
@Override
public Reader readFrom(
final Class type,
final Type genericType,
final Annotation[] annotations,
final MediaType mediaType,
final MultivaluedMap httpHeaders,
final InputStream inputStream) throws IOException {
final EntityInputStream entityStream = EntityInputStream.create(inputStream);
if (entityStream.isEmpty()) {
return new BufferedReader(new InputStreamReader(
new ByteArrayInputStream(new byte[0]), MessageUtils.getCharset(mediaType)));
}
return new BufferedReader(new InputStreamReader(entityStream, getCharset(mediaType)));
}
@Override
public boolean isWriteable(final Class type, final Type genericType, final Annotation[] annotations,
final MediaType mediaType) {
return Reader.class.isAssignableFrom(type);
}
@Override
public void writeTo(
final Reader t,
final Class type,
final Type genericType,
final Annotation[] annotations,
final MediaType mediaType,
final MultivaluedMap httpHeaders,
final OutputStream entityStream) throws IOException {
try {
final OutputStreamWriter out = new OutputStreamWriter(entityStream,
getCharset(mediaType));
writeTo(t, out);
out.flush();
} finally {
t.close();
}
}
}