1 files changed, 80 insertions, 0 deletions
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/opt/GpgSignHandler.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/opt/GpgSignHandler.java
new file mode 100644
index 0000000000..56423ada41
--- /dev/null
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/opt/GpgSignHandler.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2018, Salesforce. 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.opt;
+
+import org.kohsuke.args4j.CmdLineException;
+import org.kohsuke.args4j.CmdLineParser;
+import org.kohsuke.args4j.OptionDef;
+import org.kohsuke.args4j.spi.Parameters;
+import org.kohsuke.args4j.spi.Setter;
+import org.kohsuke.args4j.spi.StringOptionHandler;
+
+/**
+ * Special handler for the <code>--gpg-sign</code> option of the
+ * <code>commit</code> command.
+ *
+ * The following rules apply:
+ * <ul>
+ * <li>If no key is given, i.e. just <code>--gpg-sign</code> is passed, then it
+ * is the same as <code>--gpg-sign=default</code></li>
+ * </ul>
+ *
+ * @since 5.3
+ */
+public class GpgSignHandler extends StringOptionHandler {
+
+	/**
+	 * The value "default" which will be used when just the option is specified
+	 * without any argument
+	 */
+	public static final String DEFAULT = "default"; //$NON-NLS-1$
+
+	/**
+	 * <p>
+	 * Constructor for GpgSignHandler.
+	 * </p>
+	 *
+	 * @param parser
+	 *            The parser to which this handler belongs.
+	 * @param option
+	 *            The annotation.
+	 * @param setter
+	 *            Object to be used for setting value.
+	 */
+	public GpgSignHandler(CmdLineParser parser, OptionDef option,
+			Setter<? super String> setter) {
+		super(parser, option, setter);
+	}
+
+	@Override
+	public int parseArguments(Parameters params) throws CmdLineException {
+		String alias = params.getParameter(-1);
+		if ("--gpg-sign".equals(alias) || "-S".equals(alias)) { //$NON-NLS-1$ //$NON-NLS-2$
+			try {
+				String key = params.getParameter(0);
+				if (key == null || key.startsWith("-")) { //$NON-NLS-1$
+					// ignore invalid values and assume default
+					setter.addValue(DEFAULT);
+					return 0;
+				}
+
+				// use what we have
+				setter.addValue(key);
+				return 1;
+			} catch (CmdLineException e) {
+				// no additional value, assume default
+				setter.addValue(DEFAULT);
+				return 0;
+			}
+		}
+		return 0;
+	}
+
+}