--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/java/adr/org/opensolaris/os/adr/CLI.java	Wed Mar 14 10:45:15 2012 -0400
@@ -0,0 +1,144 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ */
+
+package org.opensolaris.os.adr;
+
+import java.util.*;
+
+public class CLI {
+    //
+    // Inner classes
+    //
+
+    public static class Option {
+	private char letter_;
+	private String arg_;
+
+	public Option(char letter, String arg) {
+	    letter_ = letter;
+	    arg_ = arg;
+	}
+
+	public char getLetter() {
+	    return letter_;
+	}
+
+	public String getArg() {
+	    return arg_;
+	}
+    }
+
+    //
+    // Instance data
+    //
+
+    private Class mainClass;
+
+    //
+    // Constructors
+    //
+
+    public CLI(Class mainClass) {
+	this.mainClass = mainClass;
+    }
+
+    //
+    // CLI methods
+    //
+
+    public void die(int exit, String format, Object... args) {
+	if (format != null) {
+	    System.err.printf("%s: ", getProg());
+	    System.err.printf(format, args);
+	    System.err.println();
+	}
+	System.exit(exit);
+    }
+
+    public int getOptions(String[] args, String argspec,
+	Map<Character, Option> opts) {
+
+	Map<Character, Boolean> optspecs = new HashMap<Character, Boolean>();
+
+	/* Parse argspec */
+	int length = argspec.length();
+	for (int i = 0; i < length; i++) {
+	    char l = argspec.charAt(i);
+	    boolean hasargs = i + 1 < length && argspec.charAt(i + 1) == ':';
+	    if (hasargs)
+		i++;
+	    optspecs.put(l, hasargs);
+	}
+
+	/* Parse args */
+	boolean inopt = false;
+	char pending = '\0';
+	int i;
+	for (i = 0; i < args.length; i++) {
+	    if (inopt) {
+		opts.put(pending, new Option(pending, args[i]));
+		inopt = false;
+		continue;
+	    }
+
+	    if (args[i].length() == 0 || args[i].charAt(0) != '-')
+		break;
+
+	    for (int j = 1; j < args[i].length(); j++) {
+		char l = args[i].charAt(j);
+		if (!optspecs.containsKey(l)) {
+		    die(2, "invalid option: \"%c\"", l);
+		}
+
+		if (!optspecs.get(l)) {
+		    opts.put(l, new Option(l, null));
+		    continue;
+		}
+
+		if (j + 1 < args[i].length()) {
+		    opts.put(l, new Option(l, args[i].substring(j + 1)));
+		    break;
+		}
+
+		inopt = true;
+		pending = l;
+	    }
+	}
+
+	if (inopt) {
+	    die(2, "option \"%c\" requires an argument", pending);
+	}
+
+	return i;
+    }
+
+    private String getProg() {
+	String prog = System.getProperty("argv0");
+	if (prog == null) {
+	    prog = "java " + mainClass.getName();
+	}
+	return prog;
+    }
+}