org.bouncycastle.cms.CMSProcessableFile.java Source code

Introduction

Here is the source code for org.bouncycastle.cms.CMSProcessableFile.java

Source

package org.bouncycastle.cms;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.cms.CMSObjectIdentifiers;

/**
 * a holding class for a file of data to be processed.
 */
public class CMSProcessableFile implements CMSTypedData, CMSReadable {
    private static final int DEFAULT_BUF_SIZE = 32 * 1024;

    private ASN1ObjectIdentifier type;
    private File file;
    private byte[] buf;

    public CMSProcessableFile(File file) {
        this(file, DEFAULT_BUF_SIZE);
    }

    public CMSProcessableFile(File file, int bufSize) {
        this(new ASN1ObjectIdentifier(CMSObjectIdentifiers.data.getId()), file, bufSize);
    }

    public CMSProcessableFile(ASN1ObjectIdentifier type, File file, int bufSize) {
        this.type = type;
        this.file = file;
        buf = new byte[bufSize];
    }

    public InputStream getInputStream() throws IOException, CMSException {
        return new BufferedInputStream(new FileInputStream(file), DEFAULT_BUF_SIZE);
    }

    public void write(OutputStream zOut) throws IOException, CMSException {
        FileInputStream fIn = new FileInputStream(file);
        int len;

        while ((len = fIn.read(buf, 0, buf.length)) > 0) {
            zOut.write(buf, 0, len);
        }

        fIn.close();
    }

    /**
     * Return the file handle.
     */
    public Object getContent() {
        return file;
    }

    public ASN1ObjectIdentifier getContentType() {
        return type;
    }
}