1 files changed, 56 insertions, 0 deletions
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/VerificationUtils.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/VerificationUtils.java
new file mode 100644
index 0000000000..64ee602620
--- /dev/null
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/internal/VerificationUtils.java
@@ -0,0 +1,56 @@
+/*
+ * 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.SignatureVerifier.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);
+		}
+	}
+}