1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Copyright 2003-2005 The Apache Software Foundation. 7 * 8 * Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 package com.sun.org.apache.xerces.internal.xinclude; 21 22 import com.sun.org.apache.xerces.internal.xni.NamespaceContext; 23 24 /** 25 * This is an implementation of NamespaceContext which is intended to be used for 26 * XInclude processing. It enables each context to be marked as invalid, if necessary, 27 * to indicate that the namespaces recorded on those contexts won't be apparent in the 28 * resulting infoset. 29 * 30 * @author Peter McCracken, IBM 31 * 32 */ 33 public class XIncludeNamespaceSupport extends MultipleScopeNamespaceSupport { 34 35 /** 36 * This stores whether or not the context at the matching depth was valid. 37 */ 38 private boolean[] fValidContext = new boolean[8]; 39 40 /** 41 * 42 */ XIncludeNamespaceSupport()43 public XIncludeNamespaceSupport() { 44 super(); 45 } 46 47 /** 48 * @param context 49 */ XIncludeNamespaceSupport(NamespaceContext context)50 public XIncludeNamespaceSupport(NamespaceContext context) { 51 super(context); 52 } 53 54 /** 55 * Pushes a new context onto the stack. 56 */ pushContext()57 public void pushContext() { 58 super.pushContext(); 59 if (fCurrentContext + 1 == fValidContext.length) { 60 boolean[] contextarray = new boolean[fValidContext.length * 2]; 61 System.arraycopy(fValidContext, 0, contextarray, 0, fValidContext.length); 62 fValidContext = contextarray; 63 } 64 65 fValidContext[fCurrentContext] = true; 66 } 67 68 /** 69 * This method is used to set a context invalid for XInclude namespace processing. 70 * Any context defined by an <include> or <fallback> element is not 71 * valid for processing the include parent's [in-scope namespaces]. Thus, contexts 72 * defined by these elements are set to invalid by the XInclude processor using 73 * this method. 74 */ setContextInvalid()75 public void setContextInvalid() { 76 fValidContext[fCurrentContext] = false; 77 } 78 79 /** 80 * This returns the namespace URI which was associated with the given pretext, in 81 * the context that existed at the include parent of the current element. The 82 * include parent is the last element, before the current one, which was not set 83 * to an invalid context using setContextInvalid() 84 * 85 * @param prefix the prefix of the desired URI 86 * @return the URI corresponding to the prefix in the context of the include parent 87 */ getURIFromIncludeParent(String prefix)88 public String getURIFromIncludeParent(String prefix) { 89 int lastValidContext = fCurrentContext - 1; 90 while (lastValidContext > 0 && !fValidContext[lastValidContext]) { 91 lastValidContext--; 92 } 93 return getURI(prefix, lastValidContext); 94 } 95 } 96