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/*
 * Copyright IBM Corp. 2017 All Rights Reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

package org.hyperledger.composer.bna.util;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;


public class ZipHolder {

  private final ZipOutputStream zip;

  public ZipHolder(OutputStream out) {
    this.zip = new ZipOutputStream(out);
  }

  public void addPart(String path, byte[] content) throws IOException {
    addPart(path, new ByteArrayInputStream(content));
  }

  private void addPart(String path, InputStream in) throws IOException {
    zip.putNextEntry(new ZipEntry(path));
    byte[] buffer = new byte[4 * 1024];
    for (int n; (n = in.read(buffer)) != -1; ) {
      zip.write(buffer, 0, n);
    }
    zip.closeEntry();
  }

  public void end() throws IOException {
    this.zip.finish();
    this.zip.close();
  }

}