org.opendaylight.yangtools.yang2sources.plugin.CapturingOutputStream Maven / Gradle / Ivy

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This plugin is a wrapper for "yang to source code" generation. It can be configured by a set of third-party code generators and resource providers. For further info see available goals. Sample usage: TODO: add sample usage when finished

There is a newer version: 14.0.5

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/*
 * Copyright (c) 2023 PANTHEON.tech, s.r.o. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.yangtools.yang2sources.plugin;

import com.google.common.hash.Hashing;
import com.google.common.hash.HashingOutputStream;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * An {@link OutputStream} which captures the sum of its contents.
 */
final class CapturingOutputStream extends FilterOutputStream {
    private long size;

    CapturingOutputStream(final OutputStream out) {
        super(new HashingOutputStream(Hashing.crc32c(), out));
    }

    @Override
    @SuppressWarnings("checkstyle:parameterName")
    public void write(final int b) throws IOException {
        out().write(b);
        size++;
    }

    @Override
    @SuppressWarnings("checkstyle:parameterName")
    public void write(final byte[] b, final int off, final int len) throws IOException {
        out().write(b, off, len);
        size += len;
    }

    long size() {
        return size;
    }

    int crc32c() {
        return out().hash().asInt();
    }

    private HashingOutputStream out() {
        return (HashingOutputStream) out;
    }
}