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/*
* 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.apache.commons.compress.compressors.zstandard;
import java.io.IOException;
import java.io.OutputStream;
import com.github.luben.zstd.ZstdOutputStream;
import org.apache.commons.compress.compressors.CompressorOutputStream;
/**
* {@link CompressorOutputStream} implementation to create Zstandard encoded stream.
* Library relies on <a href="https://github.com/luben/zstd-jni/">Zstandard JNI</a>
*
* @since 1.16
*/
public class ZstdCompressorOutputStream extends CompressorOutputStream {
private final ZstdOutputStream encOS;
/**
* Wraps the given stream into a zstd-jni ZstdOutputStream.
* @param outStream the stream to write to
* @param level value for zstd-jni's level argument
* @param closeFrameOnFlush value for zstd-jni's closeFrameOnFlush argument
* @param useChecksum value for zstd-jni's useChecksum argument
* @throws IOException if zstd-jni does
* @since 1.18
*/
public ZstdCompressorOutputStream(final OutputStream outStream, int level, boolean closeFrameOnFlush,
boolean useChecksum) throws IOException {
this.encOS = new ZstdOutputStream(outStream, level, closeFrameOnFlush, useChecksum);
}
/**
* Wraps the given stream into a zstd-jni ZstdOutputStream using the default value for {@code useChecksum}.
* @param outStream the stream to write to
* @param level value for zstd-jni's level argument
* @param closeFrameOnFlush value for zstd-jni's closeFrameOnFlush argument
* @throws IOException if zstd-jni does
* @since 1.18
*/
public ZstdCompressorOutputStream(final OutputStream outStream, int level, boolean closeFrameOnFlush)
throws IOException {
this.encOS = new ZstdOutputStream(outStream, level, closeFrameOnFlush);
}
/**
* Wraps the given stream into a zstd-jni ZstdOutputStream using the default values for {@code closeFrameOnFlush}
* and {@code useChecksum}.
* @param outStream the stream to write to
* @param level value for zstd-jni's level argument
* @throws IOException if zstd-jni does
* @since 1.18
*/
public ZstdCompressorOutputStream(final OutputStream outStream, int level) throws IOException {
this.encOS = new ZstdOutputStream(outStream, level);
}
/**
* Wraps the given stream into a zstd-jni ZstdOutputStream using the default values for {@code level}, {@code
* closeFrameOnFlush} and {@code useChecksum}.
* @param outStream the stream to write to
* @throws IOException if zstd-jni does
*/
public ZstdCompressorOutputStream(final OutputStream outStream) throws IOException {
this.encOS = new ZstdOutputStream(outStream);
}
@Override
public void close() throws IOException {
encOS.close();
}
@Override
public void write(final int b) throws IOException {
encOS.write(b);
}
@Override
public void write(final byte[] buf, final int off, final int len) throws IOException {
encOS.write(buf, off, len);
}
@Override
public String toString() {
return encOS.toString();
}
@Override
public void flush() throws IOException {
encOS.flush();
}
}
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