| /* |
| * Copyright (c) 1998, 2007, 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. |
| */ |
| |
| /* |
| * Licensed Materials - Property of IBM |
| * RMI-IIOP v1.0 |
| * Copyright IBM Corp. 1998 1999 All Rights Reserved |
| * |
| */ |
| |
| package sun.rmi.rmic.iiop; |
| |
| import java.util.Hashtable; |
| |
| /** |
| * A NameContext enables detection of strings which differ only |
| * in case. |
| * |
| * @author Bryan Atsatt |
| */ |
| class NameContext { |
| |
| private Hashtable table; |
| private boolean allowCollisions; |
| |
| /** |
| * Get a context for the given name. Name may be null, in |
| * which case this method will return the default context. |
| */ |
| public static synchronized NameContext forName (String name, |
| boolean allowCollisions, |
| BatchEnvironment env) { |
| |
| NameContext result = null; |
| |
| // Do we need to use the default context? |
| |
| if (name == null) { |
| |
| // Yes. |
| |
| name = "null"; |
| } |
| |
| // Have we initialized our hashtable? |
| |
| if (env.nameContexts == null) { |
| |
| // Nope, so do it... |
| |
| env.nameContexts = new Hashtable(); |
| |
| } else { |
| |
| // Yes, see if we already have the requested |
| // context... |
| |
| result = (NameContext) env.nameContexts.get(name); |
| } |
| |
| // Do we have the requested context? |
| |
| if (result == null) { |
| |
| // Nope, so create and add it... |
| |
| result = new NameContext(allowCollisions); |
| |
| env.nameContexts.put(name,result); |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Construct a context. |
| * @param allowCollisions true if case-sensitive name collisions |
| * are allowed, false if not. |
| */ |
| public NameContext (boolean allowCollisions) { |
| this.allowCollisions = allowCollisions; |
| table = new Hashtable(); |
| } |
| |
| /** |
| * Add a name to this context. If constructed with allowCollisions |
| * false and a collision occurs, this method will throw an exception |
| * in which the message contains the string: "name" and "collision". |
| */ |
| public void assertPut (String name) throws Exception { |
| |
| String message = add(name); |
| |
| if (message != null) { |
| throw new Exception(message); |
| } |
| } |
| |
| /** |
| * Add a name to this context.. |
| */ |
| public void put (String name) { |
| |
| if (allowCollisions == false) { |
| throw new Error("Must use assertPut(name)"); |
| } |
| |
| add(name); |
| } |
| |
| /** |
| * Add a name to this context. If constructed with allowCollisions |
| * false and a collision occurs, this method will return a message |
| * string, otherwise returns null. |
| */ |
| private String add (String name) { |
| |
| // First, create a key by converting name to lowercase... |
| |
| String key = name.toLowerCase(); |
| |
| // Does this key exist in the context? |
| |
| Name value = (Name) table.get(key); |
| |
| if (value != null) { |
| |
| // Yes, so they match if we ignore case. Do they match if |
| // we don't ignore case? |
| |
| if (!name.equals(value.name)) { |
| |
| // No, so this is a case-sensitive match. Are we |
| // supposed to allow this? |
| |
| if (allowCollisions) { |
| |
| // Yes, make sure it knows that it collides... |
| |
| value.collisions = true; |
| |
| } else { |
| |
| // No, so return a message string... |
| |
| return new String("\"" + name + "\" and \"" + value.name + "\""); |
| } |
| } |
| } else { |
| |
| // No, so add it... |
| |
| table.put(key,new Name(name,false)); |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Get a name from the context. If it has collisions, the name |
| * will be converted as specified in section 5.2.7. |
| */ |
| public String get (String name) { |
| |
| Name it = (Name) table.get(name.toLowerCase()); |
| String result = name; |
| |
| // Do we need to mangle it? |
| |
| if (it.collisions) { |
| |
| // Yep, so do it... |
| |
| int length = name.length(); |
| boolean allLower = true; |
| |
| for (int i = 0; i < length; i++) { |
| |
| if (Character.isUpperCase(name.charAt(i))) { |
| result += "_"; |
| result += i; |
| allLower = false; |
| } |
| } |
| |
| if (allLower) { |
| result += "_"; |
| } |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Remove all entries. |
| */ |
| public void clear () { |
| table.clear(); |
| } |
| |
| public class Name { |
| public String name; |
| public boolean collisions; |
| |
| public Name (String name, boolean collisions) { |
| this.name = name; |
| this.collisions = collisions; |
| } |
| } |
| } |