1 /* 2 * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. 3 */ 4 /* 5 * Licensed to the Apache Software Foundation (ASF) under one or more 6 * contributor license agreements. See the NOTICE file distributed with 7 * this work for additional information regarding copyright ownership. 8 * The ASF licenses this file to You under the Apache License, Version 2.0 9 * (the "License"); you may not use this file except in compliance with 10 * the License. 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 21 package com.sun.org.apache.xerces.internal.impl; 22 23 import com.sun.org.apache.xerces.internal.impl.msg.XMLMessageFormatter; 24 import com.sun.org.apache.xerces.internal.util.SymbolTable; 25 import com.sun.org.apache.xerces.internal.util.XMLSymbols; 26 import com.sun.org.apache.xerces.internal.xni.Augmentations; 27 import com.sun.org.apache.xerces.internal.xni.NamespaceContext; 28 import com.sun.org.apache.xerces.internal.xni.QName; 29 import com.sun.org.apache.xerces.internal.xni.XMLAttributes; 30 import com.sun.org.apache.xerces.internal.xni.XMLDocumentHandler; 31 import com.sun.org.apache.xerces.internal.xni.XMLLocator; 32 import com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier; 33 import com.sun.org.apache.xerces.internal.xni.XMLString; 34 import com.sun.org.apache.xerces.internal.xni.XNIException; 35 import com.sun.org.apache.xerces.internal.xni.parser.XMLComponent; 36 import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager; 37 import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException; 38 import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentFilter; 39 import com.sun.org.apache.xerces.internal.xni.parser.XMLDocumentSource; 40 41 /** 42 * This class performs namespace binding on the startElement and endElement 43 * method calls and passes all other methods through to the registered 44 * document handler. This class can be configured to only pass the 45 * start and end prefix mappings (start/endPrefixMapping). 46 * <p> 47 * This component requires the following features and properties from the 48 * component manager that uses it: 49 * <ul> 50 * <li>http://xml.org/sax/features/namespaces</li> 51 * <li>http://apache.org/xml/properties/internal/symbol-table</li> 52 * <li>http://apache.org/xml/properties/internal/error-reporter</li> 53 * </ul> 54 * 55 * @xerces.internal 56 * 57 * @author Andy Clark, IBM 58 * 59 * @LastModified: Nov 2017 60 */ 61 public class XMLNamespaceBinder 62 implements XMLComponent, XMLDocumentFilter { 63 64 // 65 // Constants 66 // 67 68 // feature identifiers 69 70 /** Feature identifier: namespaces. */ 71 protected static final String NAMESPACES = 72 Constants.SAX_FEATURE_PREFIX + Constants.NAMESPACES_FEATURE; 73 74 // property identifiers 75 76 /** Property identifier: symbol table. */ 77 protected static final String SYMBOL_TABLE = 78 Constants.XERCES_PROPERTY_PREFIX + Constants.SYMBOL_TABLE_PROPERTY; 79 80 /** Property identifier: error reporter. */ 81 protected static final String ERROR_REPORTER = 82 Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY; 83 84 // recognized features and properties 85 86 /** Recognized features. */ 87 private static final String[] RECOGNIZED_FEATURES = { 88 NAMESPACES, 89 }; 90 91 /** Feature defaults. */ 92 private static final Boolean[] FEATURE_DEFAULTS = { 93 null, 94 }; 95 96 /** Recognized properties. */ 97 private static final String[] RECOGNIZED_PROPERTIES = { 98 SYMBOL_TABLE, 99 ERROR_REPORTER, 100 }; 101 102 /** Property defaults. */ 103 private static final Object[] PROPERTY_DEFAULTS = { 104 null, 105 null, 106 }; 107 108 // 109 // Data 110 // 111 112 // features 113 114 /** Namespaces. */ 115 protected boolean fNamespaces; 116 117 // properties 118 119 /** Symbol table. */ 120 protected SymbolTable fSymbolTable; 121 122 /** Error reporter. */ 123 protected XMLErrorReporter fErrorReporter; 124 125 // handlers 126 127 /** Document handler. */ 128 protected XMLDocumentHandler fDocumentHandler; 129 130 protected XMLDocumentSource fDocumentSource; 131 132 // settings 133 134 /** Only pass start and end prefix mapping events. */ 135 protected boolean fOnlyPassPrefixMappingEvents; 136 137 // shared context 138 139 /** Namespace context. */ 140 private NamespaceContext fNamespaceContext; 141 142 // temp vars 143 144 /** Attribute QName. */ 145 private QName fAttributeQName = new QName(); 146 147 // 148 // Constructors 149 // 150 151 /** Default constructor. */ XMLNamespaceBinder()152 public XMLNamespaceBinder() { 153 } // <init>() 154 155 // 156 // Public methods 157 // 158 159 // settings 160 161 /** 162 * Sets whether the namespace binder only passes the prefix mapping 163 * events to the registered document handler or passes all document 164 * events. 165 * 166 * @param onlyPassPrefixMappingEvents True to pass only the prefix 167 * mapping events; false to pass 168 * all events. 169 */ setOnlyPassPrefixMappingEvents(boolean onlyPassPrefixMappingEvents)170 public void setOnlyPassPrefixMappingEvents(boolean onlyPassPrefixMappingEvents) { 171 fOnlyPassPrefixMappingEvents = onlyPassPrefixMappingEvents; 172 } // setOnlyPassPrefixMappingEvents(boolean) 173 174 /** 175 * Returns true if the namespace binder only passes the prefix mapping 176 * events to the registered document handler; false if the namespace 177 * binder passes all document events. 178 */ getOnlyPassPrefixMappingEvents()179 public boolean getOnlyPassPrefixMappingEvents() { 180 return fOnlyPassPrefixMappingEvents; 181 } // getOnlyPassPrefixMappingEvents():boolean 182 183 // 184 // XMLComponent methods 185 // 186 187 /** 188 * Resets the component. The component can query the component manager 189 * about any features and properties that affect the operation of the 190 * component. 191 * 192 * @param componentManager The component manager. 193 * 194 * @throws SAXException Thrown by component on initialization error. 195 * For example, if a feature or property is 196 * required for the operation of the component, the 197 * component manager may throw a 198 * SAXNotRecognizedException or a 199 * SAXNotSupportedException. 200 */ reset(XMLComponentManager componentManager)201 public void reset(XMLComponentManager componentManager) 202 throws XNIException { 203 204 // features 205 fNamespaces = componentManager.getFeature(NAMESPACES, true); 206 207 // Xerces properties 208 fSymbolTable = (SymbolTable)componentManager.getProperty(SYMBOL_TABLE); 209 fErrorReporter = (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER); 210 211 } // reset(XMLComponentManager) 212 213 /** 214 * Returns a list of feature identifiers that are recognized by 215 * this component. This method may return null if no features 216 * are recognized by this component. 217 */ getRecognizedFeatures()218 public String[] getRecognizedFeatures() { 219 return RECOGNIZED_FEATURES.clone(); 220 } // getRecognizedFeatures():String[] 221 222 /** 223 * Sets the state of a feature. This method is called by the component 224 * manager any time after reset when a feature changes state. 225 * <p> 226 * <strong>Note:</strong> Components should silently ignore features 227 * that do not affect the operation of the component. 228 * 229 * @param featureId The feature identifier. 230 * @param state The state of the feature. 231 * 232 * @throws SAXNotRecognizedException The component should not throw 233 * this exception. 234 * @throws SAXNotSupportedException The component should not throw 235 * this exception. 236 */ setFeature(String featureId, boolean state)237 public void setFeature(String featureId, boolean state) 238 throws XMLConfigurationException { 239 } // setFeature(String,boolean) 240 241 /** 242 * Returns a list of property identifiers that are recognized by 243 * this component. This method may return null if no properties 244 * are recognized by this component. 245 */ getRecognizedProperties()246 public String[] getRecognizedProperties() { 247 return RECOGNIZED_PROPERTIES.clone(); 248 } // getRecognizedProperties():String[] 249 250 /** 251 * Sets the value of a property during parsing. 252 * 253 * @param propertyId 254 * @param value 255 */ setProperty(String propertyId, Object value)256 public void setProperty(String propertyId, Object value) 257 throws XMLConfigurationException { 258 259 // Xerces properties 260 if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) { 261 final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length(); 262 263 if (suffixLength == Constants.SYMBOL_TABLE_PROPERTY.length() && 264 propertyId.endsWith(Constants.SYMBOL_TABLE_PROPERTY)) { 265 fSymbolTable = (SymbolTable)value; 266 } 267 else if (suffixLength == Constants.ERROR_REPORTER_PROPERTY.length() && 268 propertyId.endsWith(Constants.ERROR_REPORTER_PROPERTY)) { 269 fErrorReporter = (XMLErrorReporter)value; 270 } 271 return; 272 } 273 274 } // setProperty(String,Object) 275 276 /** 277 * Returns the default state for a feature, or null if this 278 * component does not want to report a default value for this 279 * feature. 280 * 281 * @param featureId The feature identifier. 282 * 283 * @since Xerces 2.2.0 284 */ getFeatureDefault(String featureId)285 public Boolean getFeatureDefault(String featureId) { 286 for (int i = 0; i < RECOGNIZED_FEATURES.length; i++) { 287 if (RECOGNIZED_FEATURES[i].equals(featureId)) { 288 return FEATURE_DEFAULTS[i]; 289 } 290 } 291 return null; 292 } // getFeatureDefault(String):Boolean 293 294 /** 295 * Returns the default state for a property, or null if this 296 * component does not want to report a default value for this 297 * property. 298 * 299 * @param propertyId The property identifier. 300 * 301 * @since Xerces 2.2.0 302 */ getPropertyDefault(String propertyId)303 public Object getPropertyDefault(String propertyId) { 304 for (int i = 0; i < RECOGNIZED_PROPERTIES.length; i++) { 305 if (RECOGNIZED_PROPERTIES[i].equals(propertyId)) { 306 return PROPERTY_DEFAULTS[i]; 307 } 308 } 309 return null; 310 } // getPropertyDefault(String):Object 311 312 // 313 // XMLDocumentSource methods 314 // 315 316 /** Sets the document handler to receive information about the document. */ setDocumentHandler(XMLDocumentHandler documentHandler)317 public void setDocumentHandler(XMLDocumentHandler documentHandler) { 318 fDocumentHandler = documentHandler; 319 } // setDocumentHandler(XMLDocumentHandler) 320 321 /** Returns the document handler */ getDocumentHandler()322 public XMLDocumentHandler getDocumentHandler() { 323 return fDocumentHandler; 324 } // setDocumentHandler(XMLDocumentHandler) 325 326 327 // 328 // XMLDocumentHandler methods 329 // 330 331 /** Sets the document source */ setDocumentSource(XMLDocumentSource source)332 public void setDocumentSource(XMLDocumentSource source){ 333 fDocumentSource = source; 334 } // setDocumentSource 335 336 /** Returns the document source */ getDocumentSource()337 public XMLDocumentSource getDocumentSource (){ 338 return fDocumentSource; 339 } // getDocumentSource 340 341 342 /** 343 * This method notifies the start of a general entity. 344 * <p> 345 * <strong>Note:</strong> This method is not called for entity references 346 * appearing as part of attribute values. 347 * 348 * @param name The name of the general entity. 349 * @param identifier The resource identifier. 350 * @param encoding The auto-detected IANA encoding name of the entity 351 * stream. This value will be null in those situations 352 * where the entity encoding is not auto-detected (e.g. 353 * internal entities or a document entity that is 354 * parsed from a java.io.Reader). 355 * @param augs Additional information that may include infoset augmentations 356 * 357 * @exception XNIException Thrown by handler to signal an error. 358 */ startGeneralEntity(String name, XMLResourceIdentifier identifier, String encoding, Augmentations augs)359 public void startGeneralEntity(String name, 360 XMLResourceIdentifier identifier, 361 String encoding, Augmentations augs) 362 throws XNIException { 363 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 364 fDocumentHandler.startGeneralEntity(name, identifier, encoding, augs); 365 } 366 } // startEntity(String,String,String,String,String) 367 368 /** 369 * Notifies of the presence of a TextDecl line in an entity. If present, 370 * this method will be called immediately following the startEntity call. 371 * <p> 372 * <strong>Note:</strong> This method will never be called for the 373 * document entity; it is only called for external general entities 374 * referenced in document content. 375 * <p> 376 * <strong>Note:</strong> This method is not called for entity references 377 * appearing as part of attribute values. 378 * 379 * @param version The XML version, or null if not specified. 380 * @param encoding The IANA encoding name of the entity. 381 * @param augs Additional information that may include infoset augmentations 382 * 383 * @throws XNIException Thrown by handler to signal an error. 384 */ textDecl(String version, String encoding, Augmentations augs)385 public void textDecl(String version, String encoding, Augmentations augs) 386 throws XNIException { 387 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 388 fDocumentHandler.textDecl(version, encoding, augs); 389 } 390 } // textDecl(String,String) 391 392 /** 393 * The start of the document. 394 * 395 * @param locator The system identifier of the entity if the entity 396 * is external, null otherwise. 397 * @param encoding The auto-detected IANA encoding name of the entity 398 * stream. This value will be null in those situations 399 * where the entity encoding is not auto-detected (e.g. 400 * internal entities or a document entity that is 401 * parsed from a java.io.Reader). 402 * @param namespaceContext 403 * The namespace context in effect at the 404 * start of this document. 405 * This object represents the current context. 406 * Implementors of this class are responsible 407 * for copying the namespace bindings from the 408 * the current context (and its parent contexts) 409 * if that information is important. 410 * @param augs Additional information that may include infoset augmentations 411 * 412 * @throws XNIException Thrown by handler to signal an error. 413 */ startDocument(XMLLocator locator, String encoding, NamespaceContext namespaceContext, Augmentations augs)414 public void startDocument(XMLLocator locator, String encoding, 415 NamespaceContext namespaceContext, Augmentations augs) 416 throws XNIException { 417 fNamespaceContext = namespaceContext; 418 419 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 420 fDocumentHandler.startDocument(locator, encoding, namespaceContext, augs); 421 } 422 } // startDocument(XMLLocator,String) 423 424 /** 425 * Notifies of the presence of an XMLDecl line in the document. If 426 * present, this method will be called immediately following the 427 * startDocument call. 428 * 429 * @param version The XML version. 430 * @param encoding The IANA encoding name of the document, or null if 431 * not specified. 432 * @param standalone The standalone value, or null if not specified. 433 * @param augs Additional information that may include infoset augmentations 434 * 435 * @throws XNIException Thrown by handler to signal an error. 436 */ xmlDecl(String version, String encoding, String standalone, Augmentations augs)437 public void xmlDecl(String version, String encoding, String standalone, Augmentations augs) 438 throws XNIException { 439 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 440 fDocumentHandler.xmlDecl(version, encoding, standalone, augs); 441 } 442 } // xmlDecl(String,String,String) 443 444 /** 445 * Notifies of the presence of the DOCTYPE line in the document. 446 * 447 * @param rootElement The name of the root element. 448 * @param publicId The public identifier if an external DTD or null 449 * if the external DTD is specified using SYSTEM. 450 * @param systemId The system identifier if an external DTD, null 451 * otherwise. 452 * @param augs Additional information that may include infoset augmentations 453 * 454 * @throws XNIException Thrown by handler to signal an error. 455 */ doctypeDecl(String rootElement, String publicId, String systemId, Augmentations augs)456 public void doctypeDecl(String rootElement, 457 String publicId, String systemId, Augmentations augs) 458 throws XNIException { 459 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 460 fDocumentHandler.doctypeDecl(rootElement, publicId, systemId, augs); 461 } 462 } // doctypeDecl(String,String,String) 463 464 /** 465 * A comment. 466 * 467 * @param text The text in the comment. 468 * @param augs Additional information that may include infoset augmentations 469 * 470 * @throws XNIException Thrown by application to signal an error. 471 */ comment(XMLString text, Augmentations augs)472 public void comment(XMLString text, Augmentations augs) throws XNIException { 473 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 474 fDocumentHandler.comment(text, augs); 475 } 476 } // comment(XMLString) 477 478 /** 479 * A processing instruction. Processing instructions consist of a 480 * target name and, optionally, text data. The data is only meaningful 481 * to the application. 482 * <p> 483 * Typically, a processing instruction's data will contain a series 484 * of pseudo-attributes. These pseudo-attributes follow the form of 485 * element attributes but are <strong>not</strong> parsed or presented 486 * to the application as anything other than text. The application is 487 * responsible for parsing the data. 488 * 489 * @param target The target. 490 * @param data The data or null if none specified. 491 * @param augs Additional information that may include infoset augmentations 492 * 493 * @throws XNIException Thrown by handler to signal an error. 494 */ processingInstruction(String target, XMLString data, Augmentations augs)495 public void processingInstruction(String target, XMLString data, Augmentations augs) 496 throws XNIException { 497 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 498 fDocumentHandler.processingInstruction(target, data, augs); 499 } 500 } // processingInstruction(String,XMLString) 501 502 503 /** 504 * Binds the namespaces. This method will handle calling the 505 * document handler to start the prefix mappings. 506 * <p> 507 * <strong>Note:</strong> This method makes use of the 508 * fAttributeQName variable. Any contents of the variable will 509 * be destroyed. Caller should copy the values out of this 510 * temporary variable before calling this method. 511 * 512 * @param element The name of the element. 513 * @param attributes The element attributes. 514 * @param augs Additional information that may include infoset augmentations 515 * 516 * @throws XNIException Thrown by handler to signal an error. 517 */ startElement(QName element, XMLAttributes attributes, Augmentations augs)518 public void startElement(QName element, XMLAttributes attributes, Augmentations augs) 519 throws XNIException { 520 521 if (fNamespaces) { 522 handleStartElement(element, attributes, augs, false); 523 } 524 else if (fDocumentHandler != null) { 525 fDocumentHandler.startElement(element, attributes, augs); 526 } 527 528 529 } // startElement(QName,XMLAttributes) 530 531 /** 532 * An empty element. 533 * 534 * @param element The name of the element. 535 * @param attributes The element attributes. 536 * @param augs Additional information that may include infoset augmentations 537 * 538 * @throws XNIException Thrown by handler to signal an error. 539 */ emptyElement(QName element, XMLAttributes attributes, Augmentations augs)540 public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs) 541 throws XNIException { 542 543 if (fNamespaces) { 544 handleStartElement(element, attributes, augs, true); 545 handleEndElement(element, augs, true); 546 } 547 else if (fDocumentHandler != null) { 548 fDocumentHandler.emptyElement(element, attributes, augs); 549 } 550 551 } // emptyElement(QName,XMLAttributes) 552 553 /** 554 * Character content. 555 * 556 * @param text The content. 557 * @param augs Additional information that may include infoset augmentations 558 * 559 * @throws XNIException Thrown by handler to signal an error. 560 */ characters(XMLString text, Augmentations augs)561 public void characters(XMLString text, Augmentations augs) throws XNIException { 562 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 563 fDocumentHandler.characters(text, augs); 564 } 565 } // characters(XMLString) 566 567 /** 568 * Ignorable whitespace. For this method to be called, the document 569 * source must have some way of determining that the text containing 570 * only whitespace characters should be considered ignorable. For 571 * example, the validator can determine if a length of whitespace 572 * characters in the document are ignorable based on the element 573 * content model. 574 * 575 * @param text The ignorable whitespace. 576 * @param augs Additional information that may include infoset augmentations 577 * 578 * @throws XNIException Thrown by handler to signal an error. 579 */ ignorableWhitespace(XMLString text, Augmentations augs)580 public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException { 581 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 582 fDocumentHandler.ignorableWhitespace(text, augs); 583 } 584 } // ignorableWhitespace(XMLString) 585 586 /** 587 * The end of an element. 588 * 589 * @param element The name of the element. 590 * @param augs Additional information that may include infoset augmentations 591 * 592 * @throws XNIException Thrown by handler to signal an error. 593 */ endElement(QName element, Augmentations augs)594 public void endElement(QName element, Augmentations augs) throws XNIException { 595 596 if (fNamespaces) { 597 handleEndElement(element, augs, false); 598 } 599 else if (fDocumentHandler != null) { 600 fDocumentHandler.endElement(element, augs); 601 } 602 603 } // endElement(QName) 604 605 /** 606 * The start of a CDATA section. 607 * @param augs Additional information that may include infoset augmentations 608 * 609 * @throws XNIException Thrown by handler to signal an error. 610 */ startCDATA(Augmentations augs)611 public void startCDATA(Augmentations augs) throws XNIException { 612 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 613 fDocumentHandler.startCDATA(augs); 614 } 615 } // startCDATA() 616 617 /** 618 * The end of a CDATA section. 619 * @param augs Additional information that may include infoset augmentations 620 * 621 * @throws XNIException Thrown by handler to signal an error. 622 */ endCDATA(Augmentations augs)623 public void endCDATA(Augmentations augs) throws XNIException { 624 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 625 fDocumentHandler.endCDATA(augs); 626 } 627 } // endCDATA() 628 629 /** 630 * The end of the document. 631 * @param augs Additional information that may include infoset augmentations 632 * 633 * @throws XNIException Thrown by handler to signal an error. 634 */ endDocument(Augmentations augs)635 public void endDocument(Augmentations augs) throws XNIException { 636 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 637 fDocumentHandler.endDocument(augs); 638 } 639 } // endDocument() 640 641 /** 642 * This method notifies the end of a general entity. 643 * <p> 644 * <strong>Note:</strong> This method is not called for entity references 645 * appearing as part of attribute values. 646 * 647 * @param name The name of the entity. 648 * @param augs Additional information that may include infoset augmentations 649 * 650 * @exception XNIException 651 * Thrown by handler to signal an error. 652 */ endGeneralEntity(String name, Augmentations augs)653 public void endGeneralEntity(String name, Augmentations augs) throws XNIException { 654 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 655 fDocumentHandler.endGeneralEntity(name, augs); 656 } 657 } // endEntity(String) 658 659 // 660 // Protected methods 661 // 662 663 /** Handles start element. */ handleStartElement(QName element, XMLAttributes attributes, Augmentations augs, boolean isEmpty)664 protected void handleStartElement(QName element, XMLAttributes attributes, 665 Augmentations augs, 666 boolean isEmpty) throws XNIException { 667 668 // add new namespace context 669 fNamespaceContext.pushContext(); 670 671 if (element.prefix == XMLSymbols.PREFIX_XMLNS) { 672 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 673 "ElementXMLNSPrefix", 674 new Object[]{element.rawname}, 675 XMLErrorReporter.SEVERITY_FATAL_ERROR); 676 } 677 678 // search for new namespace bindings 679 int length = attributes.getLength(); 680 for (int i = 0; i < length; i++) { 681 String localpart = attributes.getLocalName(i); 682 String prefix = attributes.getPrefix(i); 683 // when it's of form xmlns="..." or xmlns:prefix="...", 684 // it's a namespace declaration. but prefix:xmlns="..." isn't. 685 if (prefix == XMLSymbols.PREFIX_XMLNS || 686 prefix == XMLSymbols.EMPTY_STRING && localpart == XMLSymbols.PREFIX_XMLNS) { 687 688 // get the internalized value of this attribute 689 String uri = fSymbolTable.addSymbol(attributes.getValue(i)); 690 691 // 1. "xmlns" can't be bound to any namespace 692 if (prefix == XMLSymbols.PREFIX_XMLNS && localpart == XMLSymbols.PREFIX_XMLNS) { 693 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 694 "CantBindXMLNS", 695 new Object[]{attributes.getQName(i)}, 696 XMLErrorReporter.SEVERITY_FATAL_ERROR); 697 } 698 699 // 2. the namespace for "xmlns" can't be bound to any prefix 700 if (uri == NamespaceContext.XMLNS_URI) { 701 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 702 "CantBindXMLNS", 703 new Object[]{attributes.getQName(i)}, 704 XMLErrorReporter.SEVERITY_FATAL_ERROR); 705 } 706 707 // 3. "xml" can't be bound to any other namespace than it's own 708 if (localpart == XMLSymbols.PREFIX_XML) { 709 if (uri != NamespaceContext.XML_URI) { 710 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 711 "CantBindXML", 712 new Object[]{attributes.getQName(i)}, 713 XMLErrorReporter.SEVERITY_FATAL_ERROR); 714 } 715 } 716 // 4. the namespace for "xml" can't be bound to any other prefix 717 else { 718 if (uri ==NamespaceContext.XML_URI) { 719 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 720 "CantBindXML", 721 new Object[]{attributes.getQName(i)}, 722 XMLErrorReporter.SEVERITY_FATAL_ERROR); 723 } 724 } 725 726 prefix = localpart != XMLSymbols.PREFIX_XMLNS ? localpart : XMLSymbols.EMPTY_STRING; 727 728 // http://www.w3.org/TR/1999/REC-xml-names-19990114/#dt-prefix 729 // We should only report an error if there is a prefix, 730 // that is, the local part is not "xmlns". -SG 731 // Since this is an error condition in XML 1.0, 732 // and should be relatively uncommon in XML 1.1, 733 // making this test into a method call to reuse code 734 // should be acceptable. - NG 735 if(prefixBoundToNullURI(uri, localpart)) { 736 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 737 "EmptyPrefixedAttName", 738 new Object[]{attributes.getQName(i)}, 739 XMLErrorReporter.SEVERITY_FATAL_ERROR); 740 continue; 741 } 742 743 // declare prefix in context 744 fNamespaceContext.declarePrefix(prefix, uri.length() != 0 ? uri : null); 745 746 } 747 } 748 749 // bind the element 750 String prefix = element.prefix != null 751 ? element.prefix : XMLSymbols.EMPTY_STRING; 752 element.uri = fNamespaceContext.getURI(prefix); 753 if (element.prefix == null && element.uri != null) { 754 element.prefix = XMLSymbols.EMPTY_STRING; 755 } 756 if (element.prefix != null && element.uri == null) { 757 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 758 "ElementPrefixUnbound", 759 new Object[]{element.prefix, element.rawname}, 760 XMLErrorReporter.SEVERITY_FATAL_ERROR); 761 } 762 763 // bind the attributes 764 for (int i = 0; i < length; i++) { 765 attributes.getName(i, fAttributeQName); 766 String aprefix = fAttributeQName.prefix != null 767 ? fAttributeQName.prefix : XMLSymbols.EMPTY_STRING; 768 String arawname = fAttributeQName.rawname; 769 if (arawname == XMLSymbols.PREFIX_XMLNS) { 770 fAttributeQName.uri = fNamespaceContext.getURI(XMLSymbols.PREFIX_XMLNS); 771 attributes.setName(i, fAttributeQName); 772 } 773 else if (aprefix != XMLSymbols.EMPTY_STRING) { 774 fAttributeQName.uri = fNamespaceContext.getURI(aprefix); 775 if (fAttributeQName.uri == null) { 776 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 777 "AttributePrefixUnbound", 778 new Object[]{element.rawname,arawname,aprefix}, 779 XMLErrorReporter.SEVERITY_FATAL_ERROR); 780 } 781 attributes.setName(i, fAttributeQName); 782 } 783 } 784 785 // verify that duplicate attributes don't exist 786 // Example: <foo xmlns:a='NS' xmlns:b='NS' a:attr='v1' b:attr='v2'/> 787 int attrCount = attributes.getLength(); 788 for (int i = 0; i < attrCount - 1; i++) { 789 String auri = attributes.getURI(i); 790 if (auri == null || auri == NamespaceContext.XMLNS_URI) { 791 continue; 792 } 793 String alocalpart = attributes.getLocalName(i); 794 for (int j = i + 1; j < attrCount; j++) { 795 String blocalpart = attributes.getLocalName(j); 796 String buri = attributes.getURI(j); 797 if (alocalpart == blocalpart && auri == buri) { 798 fErrorReporter.reportError(XMLMessageFormatter.XMLNS_DOMAIN, 799 "AttributeNSNotUnique", 800 new Object[]{element.rawname,alocalpart, auri}, 801 XMLErrorReporter.SEVERITY_FATAL_ERROR); 802 } 803 } 804 } 805 806 // call handler 807 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 808 if (isEmpty) { 809 fDocumentHandler.emptyElement(element, attributes, augs); 810 } 811 else { 812 fDocumentHandler.startElement(element, attributes, augs); 813 } 814 } 815 816 817 } // handleStartElement(QName,XMLAttributes,boolean) 818 819 /** Handles end element. */ handleEndElement(QName element, Augmentations augs, boolean isEmpty)820 protected void handleEndElement(QName element, Augmentations augs, boolean isEmpty) 821 throws XNIException { 822 823 // bind element 824 String eprefix = element.prefix != null ? element.prefix : XMLSymbols.EMPTY_STRING; 825 element.uri = fNamespaceContext.getURI(eprefix); 826 if (element.uri != null) { 827 element.prefix = eprefix; 828 } 829 830 // call handlers 831 if (fDocumentHandler != null && !fOnlyPassPrefixMappingEvents) { 832 if (!isEmpty) { 833 fDocumentHandler.endElement(element, augs); 834 } 835 } 836 837 // pop context 838 fNamespaceContext.popContext(); 839 840 } // handleEndElement(QName,boolean) 841 842 // returns true iff the given prefix is bound to "" *and* 843 // this is disallowed by the version of XML namespaces in use. prefixBoundToNullURI(String uri, String localpart)844 protected boolean prefixBoundToNullURI(String uri, String localpart) { 845 return (uri == XMLSymbols.EMPTY_STRING && localpart != XMLSymbols.PREFIX_XMLNS); 846 } // prefixBoundToNullURI(String, String): boolean 847 848 } // class XMLNamespaceBinder 849