BaseScreen.java

/*
 * Copyright  1990-2009 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 */

package com.sun.ams.ui;

public abstract class BaseScreen implements StringIds {
    BaseScreenStack             stack;
    private ScreenProperties    props;

    private static String localizeString(int id) {
        return StringTable.getString(id);
    }

    private static String printfImpl(String format, Object args[]) {
        StringBuffer returnString = new StringBuffer();

        int startIndex = 0;
        int token = format.indexOf('%');
        while (0 <= token) {
            returnString.append(format.substring(startIndex, token));

            // Get char after '%'. That char is within the ['0','9'] range,
            // or it is escaped '%'.
            int chr = format.charAt(token + 1);
            if ('%' != chr) {
                // Convert chr into args array index.
                int argIdx = chr - '0';

                // Do the substitution.
                returnString.append(args[argIdx]);
            } else {
                returnString.append('%');
            }

            // Find the next '%'.
            startIndex = token + 2;
            token = format.indexOf('%', startIndex);
        }
        returnString.append(format.substring(startIndex));

        return returnString.toString();
    }

    static String printf(int id, Object args[]) {
        return printfImpl(localizeString(id), args);
    }

    protected Object getProperty(String key) {
        return props.get(key);
    }

    public BaseScreen(ScreenProperties props) {
        this.props = props;
    }

    private static void test(String format, String expected) {
        String res =
            BaseScreen.printfImpl(format, new Object[] { "One", "Two" });
        if (!expected.equals(res)) {
            throw new RuntimeException();
        }
    }

    public static void main(String args[]) {
        test(
            "Sha\nving %0 to %1  abc\nPlease Wait...",
            "Sha\nving One to Two  abc\nPlease Wait...");
        test("", "");
        test("Hello", "Hello");
        test("Hello%1", "HelloTwo");
        test("%1Hello%1", "TwoHelloTwo");
        test("%1Hello%0", "TwoHelloOne");
        test("%1%0", "TwoOne");
        test("%1\n%0\n", "Two\nOne\n");
        test("%1%%\n%0\n", "Two%\nOne\n");
        test("%%%%", "%%");
        test("%%", "%");
        test("%%%1", "%Two");
    }
}