Thu, 31 Aug 2017 15:18:52 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | |
aoqi@0 | 26 | package com.sun.xml.internal.bind.v2.runtime.unmarshaller; |
aoqi@0 | 27 | |
aoqi@0 | 28 | import javax.xml.stream.Location; |
aoqi@0 | 29 | import javax.xml.stream.XMLStreamConstants; |
aoqi@0 | 30 | import javax.xml.stream.XMLStreamException; |
aoqi@0 | 31 | |
aoqi@0 | 32 | import com.sun.xml.internal.bind.WhiteSpaceProcessor; |
aoqi@0 | 33 | import com.sun.xml.internal.fastinfoset.stax.StAXDocumentParser; |
aoqi@0 | 34 | import com.sun.xml.internal.org.jvnet.fastinfoset.EncodingAlgorithmIndexes; |
aoqi@0 | 35 | import org.xml.sax.SAXException; |
aoqi@0 | 36 | |
aoqi@0 | 37 | /** |
aoqi@0 | 38 | * Reads from FastInfoset StAX parser and feeds into JAXB Unmarshaller. |
aoqi@0 | 39 | * <p> |
aoqi@0 | 40 | * This class will peek at future events to ascertain if characters need to be |
aoqi@0 | 41 | * buffered or not. |
aoqi@0 | 42 | * |
aoqi@0 | 43 | * @author Paul Sandoz. |
aoqi@0 | 44 | */ |
aoqi@0 | 45 | final class FastInfosetConnector extends StAXConnector { |
aoqi@0 | 46 | |
aoqi@0 | 47 | // event source |
aoqi@0 | 48 | private final StAXDocumentParser fastInfosetStreamReader; |
aoqi@0 | 49 | |
aoqi@0 | 50 | // Flag set to true if text has been reported |
aoqi@0 | 51 | private boolean textReported; |
aoqi@0 | 52 | |
aoqi@0 | 53 | // Buffer for octets |
aoqi@0 | 54 | private final Base64Data base64Data = new Base64Data(); |
aoqi@0 | 55 | |
aoqi@0 | 56 | // Buffer for characters |
aoqi@0 | 57 | private final StringBuilder buffer = new StringBuilder(); |
aoqi@0 | 58 | |
aoqi@0 | 59 | public FastInfosetConnector(StAXDocumentParser fastInfosetStreamReader, |
aoqi@0 | 60 | XmlVisitor visitor) { |
aoqi@0 | 61 | super(visitor); |
aoqi@0 | 62 | fastInfosetStreamReader.setStringInterning(true); |
aoqi@0 | 63 | this.fastInfosetStreamReader = fastInfosetStreamReader; |
aoqi@0 | 64 | } |
aoqi@0 | 65 | |
aoqi@0 | 66 | public void bridge() throws XMLStreamException { |
aoqi@0 | 67 | try { |
aoqi@0 | 68 | // remembers the nest level of elements to know when we are done. |
aoqi@0 | 69 | int depth=0; |
aoqi@0 | 70 | |
aoqi@0 | 71 | // if the parser is at the start tag, proceed to the first element |
aoqi@0 | 72 | int event = fastInfosetStreamReader.getEventType(); |
aoqi@0 | 73 | if(event == XMLStreamConstants.START_DOCUMENT) { |
aoqi@0 | 74 | // nextTag doesn't correctly handle DTDs |
aoqi@0 | 75 | while( !fastInfosetStreamReader.isStartElement() ) |
aoqi@0 | 76 | event = fastInfosetStreamReader.next(); |
aoqi@0 | 77 | } |
aoqi@0 | 78 | |
aoqi@0 | 79 | |
aoqi@0 | 80 | if( event!=XMLStreamConstants.START_ELEMENT) |
aoqi@0 | 81 | throw new IllegalStateException("The current event is not START_ELEMENT\n but " + event); |
aoqi@0 | 82 | |
aoqi@0 | 83 | // TODO: we don't have to rely on this hack --- we can just emulate |
aoqi@0 | 84 | // start/end prefix mappings. But for now, I'll rely on this hack. |
aoqi@0 | 85 | handleStartDocument(fastInfosetStreamReader.getNamespaceContext()); |
aoqi@0 | 86 | |
aoqi@0 | 87 | OUTER: |
aoqi@0 | 88 | while(true) { |
aoqi@0 | 89 | // These are all of the events listed in the javadoc for |
aoqi@0 | 90 | // XMLEvent. |
aoqi@0 | 91 | // The spec only really describes 11 of them. |
aoqi@0 | 92 | switch (event) { |
aoqi@0 | 93 | case XMLStreamConstants.START_ELEMENT : |
aoqi@0 | 94 | handleStartElement(); |
aoqi@0 | 95 | depth++; |
aoqi@0 | 96 | break; |
aoqi@0 | 97 | case XMLStreamConstants.END_ELEMENT : |
aoqi@0 | 98 | depth--; |
aoqi@0 | 99 | handleEndElement(); |
aoqi@0 | 100 | if(depth==0) break OUTER; |
aoqi@0 | 101 | break; |
aoqi@0 | 102 | case XMLStreamConstants.CHARACTERS : |
aoqi@0 | 103 | case XMLStreamConstants.CDATA : |
aoqi@0 | 104 | case XMLStreamConstants.SPACE : |
aoqi@0 | 105 | if (predictor.expectText()) { |
aoqi@0 | 106 | // Peek at the next event to see if there are |
aoqi@0 | 107 | // fragmented characters |
aoqi@0 | 108 | event = fastInfosetStreamReader.peekNext(); |
aoqi@0 | 109 | if (event == XMLStreamConstants.END_ELEMENT) |
aoqi@0 | 110 | processNonIgnorableText(); |
aoqi@0 | 111 | else if (event == XMLStreamConstants.START_ELEMENT) |
aoqi@0 | 112 | processIgnorableText(); |
aoqi@0 | 113 | else |
aoqi@0 | 114 | handleFragmentedCharacters(); |
aoqi@0 | 115 | } |
aoqi@0 | 116 | break; |
aoqi@0 | 117 | // otherwise simply ignore |
aoqi@0 | 118 | } |
aoqi@0 | 119 | |
aoqi@0 | 120 | event=fastInfosetStreamReader.next(); |
aoqi@0 | 121 | } |
aoqi@0 | 122 | |
aoqi@0 | 123 | fastInfosetStreamReader.next(); // move beyond the end tag. |
aoqi@0 | 124 | |
aoqi@0 | 125 | handleEndDocument(); |
aoqi@0 | 126 | } catch (SAXException e) { |
aoqi@0 | 127 | throw new XMLStreamException(e); |
aoqi@0 | 128 | } |
aoqi@0 | 129 | } |
aoqi@0 | 130 | |
aoqi@0 | 131 | protected Location getCurrentLocation() { |
aoqi@0 | 132 | return fastInfosetStreamReader.getLocation(); |
aoqi@0 | 133 | } |
aoqi@0 | 134 | |
aoqi@0 | 135 | protected String getCurrentQName() { |
aoqi@0 | 136 | return fastInfosetStreamReader.getNameString(); |
aoqi@0 | 137 | } |
aoqi@0 | 138 | |
aoqi@0 | 139 | private void handleStartElement() throws SAXException { |
aoqi@0 | 140 | processUnreportedText(); |
aoqi@0 | 141 | |
aoqi@0 | 142 | for (int i = 0; i < fastInfosetStreamReader.accessNamespaceCount(); i++) { |
aoqi@0 | 143 | visitor.startPrefixMapping(fastInfosetStreamReader.getNamespacePrefix(i), |
aoqi@0 | 144 | fastInfosetStreamReader.getNamespaceURI(i)); |
aoqi@0 | 145 | } |
aoqi@0 | 146 | |
aoqi@0 | 147 | tagName.uri = fastInfosetStreamReader.accessNamespaceURI(); |
aoqi@0 | 148 | tagName.local = fastInfosetStreamReader.accessLocalName(); |
aoqi@0 | 149 | tagName.atts = fastInfosetStreamReader.getAttributesHolder(); |
aoqi@0 | 150 | |
aoqi@0 | 151 | visitor.startElement(tagName); |
aoqi@0 | 152 | } |
aoqi@0 | 153 | |
aoqi@0 | 154 | private void handleFragmentedCharacters() throws XMLStreamException, SAXException { |
aoqi@0 | 155 | buffer.setLength(0); |
aoqi@0 | 156 | |
aoqi@0 | 157 | // Append characters of first character event |
aoqi@0 | 158 | buffer.append(fastInfosetStreamReader.getTextCharacters(), |
aoqi@0 | 159 | fastInfosetStreamReader.getTextStart(), |
aoqi@0 | 160 | fastInfosetStreamReader.getTextLength()); |
aoqi@0 | 161 | |
aoqi@0 | 162 | // Consume all character |
aoqi@0 | 163 | while(true) { |
aoqi@0 | 164 | switch(fastInfosetStreamReader.peekNext()) { |
aoqi@0 | 165 | case XMLStreamConstants.START_ELEMENT : |
aoqi@0 | 166 | processBufferedText(true); |
aoqi@0 | 167 | return; |
aoqi@0 | 168 | case XMLStreamConstants.END_ELEMENT : |
aoqi@0 | 169 | processBufferedText(false); |
aoqi@0 | 170 | return; |
aoqi@0 | 171 | case XMLStreamConstants.CHARACTERS : |
aoqi@0 | 172 | case XMLStreamConstants.CDATA : |
aoqi@0 | 173 | case XMLStreamConstants.SPACE : |
aoqi@0 | 174 | // Append characters of second and subsequent character events |
aoqi@0 | 175 | fastInfosetStreamReader.next(); |
aoqi@0 | 176 | buffer.append(fastInfosetStreamReader.getTextCharacters(), |
aoqi@0 | 177 | fastInfosetStreamReader.getTextStart(), |
aoqi@0 | 178 | fastInfosetStreamReader.getTextLength()); |
aoqi@0 | 179 | break; |
aoqi@0 | 180 | default: |
aoqi@0 | 181 | fastInfosetStreamReader.next(); |
aoqi@0 | 182 | } |
aoqi@0 | 183 | } |
aoqi@0 | 184 | } |
aoqi@0 | 185 | |
aoqi@0 | 186 | private void handleEndElement() throws SAXException { |
aoqi@0 | 187 | processUnreportedText(); |
aoqi@0 | 188 | |
aoqi@0 | 189 | tagName.uri = fastInfosetStreamReader.accessNamespaceURI(); |
aoqi@0 | 190 | tagName.local = fastInfosetStreamReader.accessLocalName(); |
aoqi@0 | 191 | |
aoqi@0 | 192 | visitor.endElement(tagName); |
aoqi@0 | 193 | |
aoqi@0 | 194 | for (int i = fastInfosetStreamReader.accessNamespaceCount() - 1; i >= 0; i--) { |
aoqi@0 | 195 | visitor.endPrefixMapping(fastInfosetStreamReader.getNamespacePrefix(i)); |
aoqi@0 | 196 | } |
aoqi@0 | 197 | } |
aoqi@0 | 198 | |
aoqi@0 | 199 | final private class CharSequenceImpl implements CharSequence { |
aoqi@0 | 200 | char[] ch; |
aoqi@0 | 201 | int start; |
aoqi@0 | 202 | int length; |
aoqi@0 | 203 | |
aoqi@0 | 204 | CharSequenceImpl() { |
aoqi@0 | 205 | } |
aoqi@0 | 206 | |
aoqi@0 | 207 | CharSequenceImpl(final char[] ch, final int start, final int length) { |
aoqi@0 | 208 | this.ch = ch; |
aoqi@0 | 209 | this.start = start; |
aoqi@0 | 210 | this.length = length; |
aoqi@0 | 211 | } |
aoqi@0 | 212 | |
aoqi@0 | 213 | public void set() { |
aoqi@0 | 214 | ch = fastInfosetStreamReader.getTextCharacters(); |
aoqi@0 | 215 | start = fastInfosetStreamReader.getTextStart(); |
aoqi@0 | 216 | length = fastInfosetStreamReader.getTextLength(); |
aoqi@0 | 217 | } |
aoqi@0 | 218 | |
aoqi@0 | 219 | // CharSequence interface |
aoqi@0 | 220 | |
aoqi@0 | 221 | public final int length() { |
aoqi@0 | 222 | return length; |
aoqi@0 | 223 | } |
aoqi@0 | 224 | |
aoqi@0 | 225 | public final char charAt(final int index) { |
aoqi@0 | 226 | return ch[start + index]; |
aoqi@0 | 227 | } |
aoqi@0 | 228 | |
aoqi@0 | 229 | public final CharSequence subSequence(final int start, final int end) { |
aoqi@0 | 230 | return new CharSequenceImpl(ch, this.start + start, end - start); |
aoqi@0 | 231 | } |
aoqi@0 | 232 | |
aoqi@0 | 233 | public String toString() { |
aoqi@0 | 234 | return new String(ch, start, length); |
aoqi@0 | 235 | } |
aoqi@0 | 236 | } |
aoqi@0 | 237 | |
aoqi@0 | 238 | final private CharSequenceImpl charArray = new CharSequenceImpl(); |
aoqi@0 | 239 | |
aoqi@0 | 240 | private void processNonIgnorableText() throws SAXException { |
aoqi@0 | 241 | textReported = true; |
aoqi@0 | 242 | boolean isTextAlgorithmAplied = |
aoqi@0 | 243 | (fastInfosetStreamReader.getTextAlgorithmBytes() != null); |
aoqi@0 | 244 | |
aoqi@0 | 245 | if (isTextAlgorithmAplied && |
aoqi@0 | 246 | fastInfosetStreamReader.getTextAlgorithmIndex() == EncodingAlgorithmIndexes.BASE64) { |
aoqi@0 | 247 | base64Data.set(fastInfosetStreamReader.getTextAlgorithmBytesClone(),null); |
aoqi@0 | 248 | visitor.text(base64Data); |
aoqi@0 | 249 | } else { |
aoqi@0 | 250 | if (isTextAlgorithmAplied) { |
aoqi@0 | 251 | fastInfosetStreamReader.getText(); |
aoqi@0 | 252 | } |
aoqi@0 | 253 | |
aoqi@0 | 254 | charArray.set(); |
aoqi@0 | 255 | visitor.text(charArray); |
aoqi@0 | 256 | } |
aoqi@0 | 257 | } |
aoqi@0 | 258 | |
aoqi@0 | 259 | private void processIgnorableText() throws SAXException { |
aoqi@0 | 260 | boolean isTextAlgorithmAplied = |
aoqi@0 | 261 | (fastInfosetStreamReader.getTextAlgorithmBytes() != null); |
aoqi@0 | 262 | |
aoqi@0 | 263 | if (isTextAlgorithmAplied && |
aoqi@0 | 264 | fastInfosetStreamReader.getTextAlgorithmIndex() == EncodingAlgorithmIndexes.BASE64) { |
aoqi@0 | 265 | base64Data.set(fastInfosetStreamReader.getTextAlgorithmBytesClone(),null); |
aoqi@0 | 266 | visitor.text(base64Data); |
aoqi@0 | 267 | textReported = true; |
aoqi@0 | 268 | } else { |
aoqi@0 | 269 | if (isTextAlgorithmAplied) { |
aoqi@0 | 270 | fastInfosetStreamReader.getText(); |
aoqi@0 | 271 | } |
aoqi@0 | 272 | |
aoqi@0 | 273 | charArray.set(); |
aoqi@0 | 274 | if (!WhiteSpaceProcessor.isWhiteSpace(charArray)) { |
aoqi@0 | 275 | visitor.text(charArray); |
aoqi@0 | 276 | textReported = true; |
aoqi@0 | 277 | } |
aoqi@0 | 278 | } |
aoqi@0 | 279 | } |
aoqi@0 | 280 | |
aoqi@0 | 281 | private void processBufferedText(boolean ignorable) throws SAXException { |
aoqi@0 | 282 | if (!ignorable || !WhiteSpaceProcessor.isWhiteSpace(buffer)) { |
aoqi@0 | 283 | visitor.text(buffer); |
aoqi@0 | 284 | textReported = true; |
aoqi@0 | 285 | } |
aoqi@0 | 286 | } |
aoqi@0 | 287 | |
aoqi@0 | 288 | private void processUnreportedText() throws SAXException { |
aoqi@0 | 289 | if(!textReported && predictor.expectText()) { |
aoqi@0 | 290 | visitor.text(""); |
aoqi@0 | 291 | } |
aoqi@0 | 292 | textReported = false; |
aoqi@0 | 293 | } |
aoqi@0 | 294 | } |