com.day.jcr.vault.util.BinaryCheckOutputStream Maven / Gradle / Ivy

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package com.day.jcr.vault.util;

import java.io.IOException;
import java.io.OutputStream;

/**
 * BinaryCheckOutputStream...
 */
public class BinaryCheckOutputStream extends OutputStream {

    private final OutputStream out;

    private boolean binary;

    private static final boolean[] binaries = new boolean[256];
    static {
        for (int i=0; i<32; i++) {
            binaries[i] = true;
        }
        binaries['\r'] = false;
        binaries['\n'] = false;
        binaries['\t'] = false;
        binaries['\b'] = false;
        binaries['\f'] = false;
    }

    public BinaryCheckOutputStream(OutputStream out) {
        this.out = out;
    }

    public boolean isBinary() {
        return binary;
    }

    public void write(int b) throws IOException {
        if (!binary) {
            binary = binaries[b & 0xff];
        }
        out.write(b);
    }

    public void write(byte[] b) throws IOException {
        for (int i=0; i < b.length && !binary; i++) {
            binary = binaries[b[i] & 0xff];
        }
        out.write(b);
    }

    public void write(byte[] b, int off, int len) throws IOException {
        for (int i=0; i < len && !binary; i++) {
            binary = binaries[b[i+off] & 0xff];
        }
        out.write(b, off, len);
    }

    public void flush() throws IOException {
        out.flush();
    }

    public void close() throws IOException {
        out.close();
    }

}