29 lines
791 B
Java
29 lines
791 B
Java
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package org.warp.commonutils.stream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.ByteBuffer;
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import org.jetbrains.annotations.NotNull;
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/**
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* Simple {@link InputStream} implementation that exposes currently
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* available content of a {@link ByteBuffer}.
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*/
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public class ByteBufferBackedInputStream extends InputStream {
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protected final ByteBuffer _b;
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public ByteBufferBackedInputStream(ByteBuffer buf) { _b = buf; }
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@Override public int available() { return _b.remaining(); }
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@Override
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public int read() { return _b.hasRemaining() ? (_b.get() & 0xFF) : -1; }
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@Override
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public int read(byte @NotNull [] bytes, int off, int len) {
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if (!_b.hasRemaining()) return -1;
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len = Math.min(len, _b.remaining());
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_b.get(bytes, off, len);
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return len;
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}
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}
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