/*
    * Copyright (C) 2021, Thomas Wolf <thomas.wolf@paranor.ch> and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    */
  package org.eclipse.jgit.pgm.internal;
  
  import java.io.IOException;
  
  import org.eclipse.jgit.lib.GpgSignatureVerifier.SignatureVerification;
  import org.eclipse.jgit.lib.PersonIdent;
  import org.eclipse.jgit.util.GitDateFormatter;
  import org.eclipse.jgit.util.SignatureUtils;
  import org.eclipse.jgit.util.io.ThrowingPrintWriter;
  
  /**
   * Utilities for signature verification.
   */
  public final class VerificationUtils {
  
  	private VerificationUtils() {
  		// No instantiation
  	}
  
  	/**
  	 * Writes information about a signature verification to the given writer.
  	 *
  	 * @param out
  	 *            to write to
  	 * @param verification
  	 *            to show
  	 * @param name
  	 *            of the verifier used
  	 * @param creator
  	 *            of the object verified; used for time zone information
  	 * @throws IOException
  	 *             if writing fails
  	 */
  	public static void writeVerification(ThrowingPrintWriter out,
  			SignatureVerification verification, String name,
  			PersonIdent creator) throws IOException {
  		String[] text = SignatureUtils
  				.toString(verification, creator,
  						new GitDateFormatter(GitDateFormatter.Format.LOCALE))
  				.split("\n"); //$NON-NLS-1$
  		for (String line : text) {
  			out.print(name);
  			out.print(": "); //$NON-NLS-1$
  			out.println(line);
  		}
  	}
  }