1 files changed, 110 insertions, 0 deletions
diff --git a/src/main/java/org/apache/commons/compress/compressors/zstandard/ZstdCompressorOutputStream.java b/src/main/java/org/apache/commons/compress/compressors/zstandard/ZstdCompressorOutputStream.java
new file mode 100644
index 000000000..0deda7d0b
--- /dev/null
+++ b/src/main/java/org/apache/commons/compress/compressors/zstandard/ZstdCompressorOutputStream.java
@@ -0,0 +1,110 @@
+/*
+ * 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();
+    }
+}