/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.jooby.internal;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.nio.file.Files;
import org.jooby.Parser;
import com.google.common.io.ByteStreams;
public class BodyReferenceImpl implements Parser.BodyReference {
private Charset charset;
private long length;
private File file;
private byte[] bytes;
public BodyReferenceImpl(final long length, final Charset charset, final File file,
final InputStream in, final long bufferSize) throws IOException {
this.length = length;
this.charset = charset;
if (length < bufferSize) {
bytes = toByteArray(in);
} else {
this.file = copy(file, in);
}
}
@Override
public long length() {
return length;
}
@Override
public byte[] bytes() throws IOException {
if (bytes == null) {
return Files.readAllBytes(file.toPath());
} else {
return bytes;
}
}
@Override
public String text() throws IOException {
return new String(bytes(), charset);
}
@Override
public void writeTo(final OutputStream output) throws IOException {
if (bytes == null) {
Files.copy(file.toPath(), output);
} else {
output.write(bytes);
}
}
private static byte[] toByteArray(final InputStream in) throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
copy(in, out);
return out.toByteArray();
}
private static File copy(final File file, final InputStream in) throws IOException {
file.getParentFile().mkdirs();
copy(in, new FileOutputStream(file));
return file;
}
private static void copy(final InputStream in, final OutputStream out) throws IOException {
try (InputStream src = in; OutputStream dest = out) {
ByteStreams.copy(src, dest);
}
}
}