org.digidoc4j.ddoc.factory.SignatureInputStream Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of ddoc4j Show documentation

DDoc4J is Java Library for validating DDOC documents. It's not recommended to use it directly but rather through DigiDoc4J's API.

The newest version!

package org.digidoc4j.ddoc.factory;

import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * Special input stream used to filter out BOM
 * (byte-order-marks) from the beginning of xml signature
 * or signed doc xml file.
 * @author Veiko Sinivee
 */
public class SignatureInputStream
        extends FilterInputStream
{
    boolean bXml;

    /**
     * Constructor for SignatureInputStream
     * @param in real input stream to be filtered
     */
    public SignatureInputStream(InputStream in)
    {
        super(in);
        bXml = false;
    }

    public int read() throws IOException
    {
        int b = super.read();
        if(!bXml) {
            while(b != '<' && b != -1)
                b = super.read();
            bXml = true;
        }
        return b;
    }
}