001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 /*
019 * $Id: Include.java 1225842 2011-12-30 15:14:35Z mrglavas $
020 */
021
022 package org.apache.xalan.xsltc.compiler;
023
024 import java.util.Enumeration;
025
026 import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
027 import org.apache.xalan.xsltc.compiler.util.ErrorMsg;
028 import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
029 import org.apache.xalan.xsltc.compiler.util.Type;
030 import org.apache.xalan.xsltc.compiler.util.TypeCheckError;
031 import org.apache.xml.utils.SystemIDResolver;
032 import org.xml.sax.InputSource;
033 import org.xml.sax.XMLReader;
034
035 /**
036 * @author Jacek Ambroziak
037 * @author Morten Jorgensen
038 * @author Erwin Bolwidt <ejb@klomp.org>
039 * @author Gunnlaugur Briem <gthb@dimon.is>
040 */
041 final class Include extends TopLevelElement {
042
043 private Stylesheet _included = null;
044
045 public Stylesheet getIncludedStylesheet() {
046 return _included;
047 }
048
049 public void parseContents(final Parser parser) {
050 XSLTC xsltc = parser.getXSLTC();
051 Stylesheet context = parser.getCurrentStylesheet();
052
053 String docToLoad = getAttribute("href");
054 try {
055 if (context.checkForLoop(docToLoad)) {
056 final ErrorMsg msg = new ErrorMsg(ErrorMsg.CIRCULAR_INCLUDE_ERR,
057 docToLoad, this);
058 parser.reportError(Constants.FATAL, msg);
059 return;
060 }
061
062 InputSource input = null;
063 XMLReader reader = null;
064 String currLoadedDoc = context.getSystemId();
065 SourceLoader loader = context.getSourceLoader();
066
067 // Use SourceLoader if available
068 if (loader != null) {
069 input = loader.loadSource(docToLoad, currLoadedDoc, xsltc);
070 if (input != null) {
071 docToLoad = input.getSystemId();
072 reader = xsltc.getXMLReader();
073 }
074 }
075
076 // No SourceLoader or not resolved by SourceLoader
077 if (input == null) {
078 docToLoad = SystemIDResolver.getAbsoluteURI(docToLoad, currLoadedDoc);
079 input = new InputSource(docToLoad);
080 }
081
082 // Return if we could not resolve the URL
083 if (input == null) {
084 final ErrorMsg msg =
085 new ErrorMsg(ErrorMsg.FILE_NOT_FOUND_ERR, docToLoad, this);
086 parser.reportError(Constants.FATAL, msg);
087 return;
088 }
089
090 final SyntaxTreeNode root;
091 if (reader != null) {
092 root = parser.parse(reader,input);
093 }
094 else {
095 root = parser.parse(input);
096 }
097
098 if (root == null) return;
099 _included = parser.makeStylesheet(root);
100 if (_included == null) return;
101
102 _included.setSourceLoader(loader);
103 _included.setSystemId(docToLoad);
104 _included.setParentStylesheet(context);
105 _included.setIncludingStylesheet(context);
106 _included.setTemplateInlining(context.getTemplateInlining());
107
108 // An included stylesheet gets the same import precedence
109 // as the stylesheet that included it.
110 final int precedence = context.getImportPrecedence();
111 _included.setImportPrecedence(precedence);
112 parser.setCurrentStylesheet(_included);
113 _included.parseContents(parser);
114
115 final Enumeration elements = _included.elements();
116 final Stylesheet topStylesheet = parser.getTopLevelStylesheet();
117 while (elements.hasMoreElements()) {
118 final Object element = elements.nextElement();
119 if (element instanceof TopLevelElement) {
120 if (element instanceof Variable) {
121 topStylesheet.addVariable((Variable) element);
122 }
123 else if (element instanceof Param) {
124 topStylesheet.addParam((Param) element);
125 }
126 else {
127 topStylesheet.addElement((TopLevelElement) element);
128 }
129 }
130 }
131 }
132 catch (Exception e) {
133 e.printStackTrace();
134 }
135 finally {
136 parser.setCurrentStylesheet(context);
137 }
138 }
139
140 public Type typeCheck(SymbolTable stable) throws TypeCheckError {
141 return Type.Void;
142 }
143
144 public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
145 // do nothing
146 }
147 }