1 /*
   2  * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * @LastModified: Oct 2017
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.  Oracle designates this
   9  * particular file as subject to the "Classpath" exception as provided
  10  * by Oracle in the LICENSE file that accompanied this code.
  11  *
  12  * This code is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * version 2 for more details (a copy is included in the LICENSE file that
  16  * accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License version
  19  * 2 along with this work; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  21  *
  22  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  23  * or visit www.oracle.com if you need additional information or have any
  24  * questions.
  25  */
  26 
  27 package com.sun.org.apache.xalan.internal.xsltc.trax;
  28 
  29 import java.util.ArrayList;
  30 import java.util.List;
  31 import javax.xml.stream.Location;
  32 import javax.xml.stream.XMLReporter;
  33 import javax.xml.stream.XMLStreamException;
  34 import org.xml.sax.Attributes;
  35 import org.xml.sax.Locator;
  36 import org.xml.sax.SAXException;
  37 import org.xml.sax.SAXParseException;
  38 import org.xml.sax.ext.LexicalHandler;
  39 import org.xml.sax.helpers.DefaultHandler;
  40 
  41 
  42 public abstract class SAX2StAXBaseWriter extends DefaultHandler
  43                 implements
  44                         LexicalHandler {
  45 
  46 
  47         protected boolean isCDATA;
  48 
  49         protected StringBuffer CDATABuffer;
  50 
  51         protected List<String> namespaces;
  52 
  53         protected Locator docLocator;
  54 
  55         protected XMLReporter reporter;
  56 
  57         public SAX2StAXBaseWriter() {
  58         }
  59 
  60         public SAX2StAXBaseWriter(XMLReporter reporter) {
  61                 this.reporter = reporter;
  62         }
  63 
  64         public void setXMLReporter(XMLReporter reporter) {
  65                 this.reporter = reporter;
  66         }
  67 
  68         public void setDocumentLocator(Locator locator) {
  69                 this.docLocator = locator;
  70         }
  71 
  72 
  73         public Location getCurrentLocation() {
  74                 if (docLocator != null) {
  75                         return new SAXLocation(docLocator);
  76                 } else {
  77                         return null;
  78                 }
  79 
  80         }
  81 
  82         public void error(SAXParseException e) throws SAXException {
  83                 reportException("ERROR", e);
  84         }
  85 
  86         public void fatalError(SAXParseException e) throws SAXException {
  87                 reportException("FATAL", e);
  88         }
  89 
  90         public void warning(SAXParseException e) throws SAXException {
  91                 reportException("WARNING", e);
  92         }
  93 
  94         public void startDocument() throws SAXException {
  95                     namespaces = new ArrayList<>(2);
  96         }
  97 
  98         public void endDocument() throws SAXException {
  99                 namespaces = null;
 100         }
 101 
 102         public void startElement(String uri, String localName, String qName,
 103                         Attributes attributes) throws SAXException {
 104                         namespaces = null;
 105         }
 106 
 107         public void endElement(String uri, String localName, String qName)
 108                         throws SAXException {
 109                 namespaces = null;
 110         }
 111 
 112         public void startPrefixMapping(String prefix, String uri)
 113                         throws SAXException {
 114 
 115                 if (prefix == null) {
 116                         prefix = "";
 117                 } else if (prefix.equals("xml")) {
 118                         return;
 119                 }
 120 
 121                 if (namespaces == null) {
 122                     namespaces = new ArrayList<>(2);
 123                 }
 124                 namespaces.add(prefix);
 125                 namespaces.add(uri);
 126         }
 127 
 128 
 129         public void endPrefixMapping(String prefix) throws SAXException {
 130         }
 131 
 132         public void startCDATA() throws SAXException {
 133                 isCDATA = true;
 134                 if (CDATABuffer == null) {
 135                         CDATABuffer = new StringBuffer();
 136                 } else {
 137                         CDATABuffer.setLength(0);
 138                 }
 139         }
 140 
 141         public void characters(char[] ch, int start, int length)
 142                         throws SAXException {
 143                 if (isCDATA) {
 144                         CDATABuffer.append(ch, start, length);
 145                 }
 146         }
 147 
 148         public void endCDATA() throws SAXException {
 149                 isCDATA = false;
 150                 CDATABuffer.setLength(0);
 151         }
 152 
 153         public void comment(char[] ch, int start, int length) throws SAXException {
 154         }
 155 
 156         public void endDTD() throws SAXException {
 157         }
 158 
 159         public void endEntity(String name) throws SAXException {
 160         }
 161 
 162         public void startDTD(String name, String publicId, String systemId)
 163                         throws SAXException {
 164         }
 165 
 166         public void startEntity(String name) throws SAXException {
 167         }
 168 
 169         /**
 170          * Used to report a {@link SAXException}to the {@link XMLReporter}
 171          * registered with this handler.
 172          */
 173         protected void reportException(String type, SAXException e)
 174                         throws SAXException {
 175 
 176                 if (reporter != null) {
 177                         try {
 178                                 reporter.report(e.getMessage(), type, e, getCurrentLocation());
 179                         } catch (XMLStreamException e1) {
 180                                 throw new SAXException(e1);
 181                         }
 182                 }
 183         }
 184 
 185         /**
 186          * Parses an XML qualified name, and places the resulting prefix and local
 187          * name in the provided String array.
 188          *
 189          * @param qName The qualified name to parse.
 190          * @param results An array where parse results will be placed. The prefix
 191          *            will be placed at <code>results[0]</code>, and the local
 192          *            part at <code>results[1]</code>
 193          */
 194         public static final void parseQName(String qName, String[] results) {
 195 
 196                 String prefix, local;
 197                 int idx = qName.indexOf(':');
 198                 if (idx >= 0) {
 199                         prefix = qName.substring(0, idx);
 200                         local = qName.substring(idx + 1);
 201                 } else {
 202                         prefix = "";
 203                         local = qName;
 204                 }
 205                 results[0] = prefix;
 206                 results[1] = local;
 207         }
 208 
 209         /**
 210          * {@Link Location}implementation used to expose details from a SAX
 211          * {@link Locator}.
 212          *
 213          * @author christian
 214          */
 215         private static final class SAXLocation implements Location {
 216 
 217                 private int lineNumber;
 218                 private int columnNumber;
 219                 private String publicId;
 220                 private String systemId;
 221                 private SAXLocation(Locator locator) {
 222                         lineNumber = locator.getLineNumber();
 223                         columnNumber = locator.getColumnNumber();
 224                         publicId = locator.getPublicId();
 225                         systemId = locator.getSystemId();
 226                 }
 227 
 228                 public int getLineNumber() {
 229                         return lineNumber;
 230                 }
 231 
 232                 public int getColumnNumber() {
 233                         return columnNumber;
 234                 }
 235 
 236                 public int getCharacterOffset() {
 237                         return -1;
 238                 }
 239 
 240                 public String getPublicId() {
 241                         return publicId;
 242                 }
 243 
 244                 public String getSystemId() {
 245                         return systemId;
 246                 }
 247         }
 248 }