VerificationUtils.java

/*
 * 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);
        }
    }
}