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Generic implementation of ASiC-E archives in accordance with ETSI 102 918 v1.3.1.

There is a newer version: 3.0.1

/**
 * Copyright (C) 2015-2017 difi (www.difi.no)
 * Copyright (C) 2018-2021 Philip Helger (www.helger.com)
 * philip[at]helger[dot]com
 *
 * This Source Code Form is subject to the terms of the
 * Mozilla Public License, v. 2.0.
 * If a copy of the MPL was not distributed
 * with this file, You can obtain one at
 * https://mozilla.org/MPL/2.0/
 */
package com.helger.asic;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.NotThreadSafe;

import com.helger.commons.mime.IMimeType;

@NotThreadSafe
public abstract class AbstractAsicManifest
{
  private final EMessageDigestAlgorithm m_eMDAlgo;
  private MessageDigest m_aMD;

  public AbstractAsicManifest (@Nonnull final EMessageDigestAlgorithm eMDAlgo)
  {
    m_eMDAlgo = eMDAlgo;

    // Create message digest
    try
    {
      m_aMD = MessageDigest.getInstance (eMDAlgo.getMessageDigestAlgorithm ());
      m_aMD.reset ();
    }
    catch (final NoSuchAlgorithmException ex)
    {
      throw new IllegalStateException ("Algorithm " + eMDAlgo.getMessageDigestAlgorithm () + " not supported", ex);
    }
  }

  @Nonnull
  public final EMessageDigestAlgorithm getMessageDigestAlgorithm ()
  {
    return m_eMDAlgo;
  }

  @Nonnull
  protected final MessageDigest internalGetMessageDigest ()
  {
    return m_aMD;
  }

  @Nonnull
  public MessageDigest getNewMessageDigest ()
  {
    m_aMD.reset ();
    return m_aMD;
  }

  public abstract void add (String sFilename, IMimeType aMimeType);
}