| /* |
| * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 in the LICENSE file that |
| * accompanied this code). |
| * |
| * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.internal.xjc.util; |
| |
| import org.xml.sax.Locator; |
| |
| |
| /** |
| * Other miscellaneous utility methods. |
| * |
| * @author |
| * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com) |
| */ |
| public final class Util { |
| private Util() {} // no instanciation please |
| |
| /** |
| * An easier-to-use version of the System.getProperty method |
| * that doesn't throw an exception even if a property cannot be |
| * read. |
| */ |
| public static String getSystemProperty( String name ) { |
| try { |
| return System.getProperty(name); |
| } catch( SecurityException e ) { |
| return null; |
| } |
| } |
| |
| /** |
| * Compares if two {@link Locator}s point to the exact same position. |
| */ |
| public static boolean equals(Locator lhs, Locator rhs) { |
| return lhs.getLineNumber()==rhs.getLineNumber() |
| && lhs.getColumnNumber()==rhs.getColumnNumber() |
| && equals(lhs.getSystemId(),rhs.getSystemId()) |
| && equals(lhs.getPublicId(),rhs.getPublicId()); |
| } |
| |
| private static boolean equals(String lhs, String rhs) { |
| if(lhs==null && rhs==null) return true; |
| if(lhs==null || rhs==null) return false; |
| return lhs.equals(rhs); |
| } |
| |
| /** |
| * Calls the other getSystemProperty method with |
| * "[clazz].[name]. |
| */ |
| public static String getSystemProperty( Class clazz, String name ) { |
| return getSystemProperty( clazz.getName()+'.'+name ); |
| } |
| } |