packageprefixchecker.java

java1.6众多例子参考

/*
 * @(#)PackagePrefixChecker.java	1.14 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.sun.corba.se.impl.util;

import java.io.File;

/**
 * PackagePrefixChecker provides static utility methods for getting package prefixes.
 * @author M. Mortazavi
 */

public final class PackagePrefixChecker {


    private static final String PACKAGE_PREFIX = "org.omg.stub.";

    public static String packagePrefix(){ return PACKAGE_PREFIX;}

    public static String correctPackageName (String p){
        if (p==null) return p;
        if ( hasOffendingPrefix(p))
            {
               return PACKAGE_PREFIX+p;
            }
        return p;
    }

    public static boolean isOffendingPackage(String p){
        return
            !(p==null)
            &&
            ( false || hasOffendingPrefix(p) );
    }

    public static boolean hasOffendingPrefix(String p){
        return 
            (      p.startsWith("java.") || p.equals("java")
                // || p.startsWith("com.sun.") || p.equals("com.sun")
                || p.startsWith("net.jini.") || p.equals("net.jini")
                || p.startsWith("jini.") || p.equals("jini")
                || p.startsWith("javax.") || p.equals("javax")
            );
    }

    public static boolean hasBeenPrefixed(String p){
        return p.startsWith(packagePrefix());
    }

    public static String withoutPackagePrefix(String p){
        if(hasBeenPrefixed(p)) return p.substring(packagePrefix().length());
        else return p;
    }

}