J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * reserved comment block |
| 3 | * DO NOT REMOVE OR ALTER! |
| 4 | */ |
| 5 | |
| 6 | /* |
| 7 | * Copyright 1999-2004 The Apache Software Foundation. |
| 8 | * |
| 9 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 10 | * you may not use this file except in compliance with the License. |
| 11 | * You may obtain a copy of the License at |
| 12 | * |
| 13 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 14 | * |
| 15 | * Unless required by applicable law or agreed to in writing, software |
| 16 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 17 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 18 | * See the License for the specific language governing permissions and |
| 19 | * limitations under the License. |
| 20 | * |
| 21 | */ |
| 22 | package com.sun.org.apache.xml.internal.security.utils; |
| 23 | |
| 24 | |
| 25 | |
| 26 | import java.io.IOException; |
| 27 | import java.io.OutputStream; |
| 28 | import java.util.HashSet; |
| 29 | import java.util.Iterator; |
| 30 | import java.util.Set; |
| 31 | |
| 32 | import com.sun.org.apache.xml.internal.security.c14n.CanonicalizationException; |
| 33 | import com.sun.org.apache.xml.internal.security.c14n.Canonicalizer; |
| 34 | import com.sun.org.apache.xml.internal.security.c14n.InvalidCanonicalizerException; |
| 35 | import org.w3c.dom.Attr; |
| 36 | import org.w3c.dom.Document; |
| 37 | import org.w3c.dom.Element; |
| 38 | import org.w3c.dom.NamedNodeMap; |
| 39 | import org.w3c.dom.Node; |
| 40 | import org.w3c.dom.NodeList; |
| 41 | import org.w3c.dom.Text; |
| 42 | |
| 43 | |
| 44 | |
| 45 | /** |
| 46 | * DOM and XML accessibility and comfort functions. |
| 47 | * |
| 48 | * @author Christian Geuer-Pollmann |
| 49 | */ |
| 50 | public class XMLUtils { |
| 51 | |
| 52 | /** |
| 53 | * Constructor XMLUtils |
| 54 | * |
| 55 | */ |
| 56 | private XMLUtils() { |
| 57 | |
| 58 | // we don't allow instantiation |
| 59 | } |
| 60 | |
| 61 | |
| 62 | /** |
| 63 | * @param rootNode |
| 64 | * @param result |
| 65 | * @param exclude |
| 66 | * @param com wheather comments or not |
| 67 | */ |
| 68 | public static void getSet(Node rootNode,Set result,Node exclude ,boolean com) { |
| 69 | if ((exclude!=null) && isDescendantOrSelf(exclude,rootNode)){ |
| 70 | return; |
| 71 | } |
| 72 | getSetRec(rootNode,result,exclude,com); |
| 73 | } |
| 74 | static final void getSetRec(final Node rootNode,final Set result, |
| 75 | final Node exclude ,final boolean com) { |
| 76 | //Set result = new HashSet(); |
| 77 | if (rootNode==exclude) { |
| 78 | return; |
| 79 | } |
| 80 | switch (rootNode.getNodeType()) { |
| 81 | case Node.ELEMENT_NODE: |
| 82 | result.add(rootNode); |
| 83 | Element el=(Element)rootNode; |
| 84 | if (el.hasAttributes()) { |
| 85 | NamedNodeMap nl = ((Element)rootNode).getAttributes(); |
| 86 | for (int i=0;i<nl.getLength();i++) { |
| 87 | result.add(nl.item(i)); |
| 88 | } |
| 89 | } |
| 90 | //no return keep working |
| 91 | case Node.DOCUMENT_NODE: |
| 92 | for (Node r=rootNode.getFirstChild();r!=null;r=r.getNextSibling()){ |
| 93 | if (r.getNodeType()==Node.TEXT_NODE) { |
| 94 | result.add(r); |
| 95 | while ((r!=null) && (r.getNodeType()==Node.TEXT_NODE)) { |
| 96 | r=r.getNextSibling(); |
| 97 | } |
| 98 | if (r==null) |
| 99 | return; |
| 100 | } |
| 101 | getSetRec(r,result,exclude,com); |
| 102 | } |
| 103 | return; |
| 104 | case Node.COMMENT_NODE: |
| 105 | if (com) { |
| 106 | result.add(rootNode); |
| 107 | } |
| 108 | return; |
| 109 | case Node.DOCUMENT_TYPE_NODE: |
| 110 | return; |
| 111 | default: |
| 112 | result.add(rootNode); |
| 113 | } |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | |
| 118 | /** |
| 119 | * Outputs a DOM tree to an {@link OutputStream}. |
| 120 | * |
| 121 | * @param contextNode root node of the DOM tree |
| 122 | * @param os the {@link OutputStream} |
| 123 | */ |
| 124 | public static void outputDOM(Node contextNode, OutputStream os) { |
| 125 | XMLUtils.outputDOM(contextNode, os, false); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Outputs a DOM tree to an {@link OutputStream}. <I>If an Exception is |
| 130 | * thrown during execution, it's StackTrace is output to System.out, but the |
| 131 | * Exception is not re-thrown.</I> |
| 132 | * |
| 133 | * @param contextNode root node of the DOM tree |
| 134 | * @param os the {@link OutputStream} |
| 135 | * @param addPreamble |
| 136 | */ |
| 137 | public static void outputDOM(Node contextNode, OutputStream os, |
| 138 | boolean addPreamble) { |
| 139 | |
| 140 | try { |
| 141 | if (addPreamble) { |
| 142 | os.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n".getBytes()); |
| 143 | } |
| 144 | |
| 145 | os.write( |
| 146 | Canonicalizer.getInstance( |
| 147 | Canonicalizer.ALGO_ID_C14N_WITH_COMMENTS).canonicalizeSubtree( |
| 148 | contextNode)); |
| 149 | } catch (IOException ex) {} |
| 150 | catch (InvalidCanonicalizerException ex) { |
| 151 | ex.printStackTrace(); |
| 152 | } catch (CanonicalizationException ex) { |
| 153 | ex.printStackTrace(); |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Serializes the <CODE>contextNode</CODE> into the OutputStream, <I>but |
| 159 | * supresses all Exceptions</I>. |
| 160 | * <BR /> |
| 161 | * NOTE: <I>This should only be used for debugging purposes, |
| 162 | * NOT in a production environment; this method ignores all exceptions, |
| 163 | * so you won't notice if something goes wrong. If you're asking what is to |
| 164 | * be used in a production environment, simply use the code inside the |
| 165 | * <code>try{}</code> statement, but handle the Exceptions appropriately.</I> |
| 166 | * |
| 167 | * @param contextNode |
| 168 | * @param os |
| 169 | */ |
| 170 | public static void outputDOMc14nWithComments(Node contextNode, |
| 171 | OutputStream os) { |
| 172 | |
| 173 | try { |
| 174 | os.write( |
| 175 | Canonicalizer.getInstance( |
| 176 | Canonicalizer.ALGO_ID_C14N_WITH_COMMENTS).canonicalizeSubtree( |
| 177 | contextNode)); |
| 178 | } catch (IOException ex) { |
| 179 | |
| 180 | // throw new RuntimeException(ex.getMessage()); |
| 181 | } catch (InvalidCanonicalizerException ex) { |
| 182 | |
| 183 | // throw new RuntimeException(ex.getMessage()); |
| 184 | } catch (CanonicalizationException ex) { |
| 185 | |
| 186 | // throw new RuntimeException(ex.getMessage()); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | |
| 191 | /** |
| 192 | * Method getFullTextChildrenFromElement |
| 193 | * |
| 194 | * @param element |
| 195 | * @return the string of chi;ds |
| 196 | */ |
| 197 | public static String getFullTextChildrenFromElement(Element element) { |
| 198 | |
| 199 | StringBuffer sb = new StringBuffer(); |
| 200 | NodeList children = element.getChildNodes(); |
| 201 | int iMax = children.getLength(); |
| 202 | |
| 203 | for (int i = 0; i < iMax; i++) { |
| 204 | Node curr = children.item(i); |
| 205 | |
| 206 | if (curr.getNodeType() == Node.TEXT_NODE) { |
| 207 | sb.append(((Text) curr).getData()); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | return sb.toString(); |
| 212 | } |
| 213 | |
| 214 | |
| 215 | /** |
| 216 | * Creates an Element in the XML Signature specification namespace. |
| 217 | * |
| 218 | * @param doc the factory Document |
| 219 | * @param elementName the local name of the Element |
| 220 | * @return the Element |
| 221 | */ |
| 222 | public static Element createElementInSignatureSpace(Document doc, |
| 223 | String elementName) { |
| 224 | |
| 225 | if (doc == null) { |
| 226 | throw new RuntimeException("Document is null"); |
| 227 | } |
| 228 | |
| 229 | String ds = Constants.getSignatureSpecNSprefix(); |
| 230 | |
| 231 | if ((ds == null) || (ds.length() == 0)) { |
| 232 | Element element = doc.createElementNS(Constants.SignatureSpecNS, |
| 233 | elementName); |
| 234 | |
| 235 | element.setAttributeNS(Constants.NamespaceSpecNS, "xmlns", |
| 236 | Constants.SignatureSpecNS); |
| 237 | |
| 238 | return element; |
| 239 | } |
| 240 | Element element = doc.createElementNS(Constants.SignatureSpecNS, |
| 241 | ds + ":" + elementName); |
| 242 | |
| 243 | element.setAttributeNS(Constants.NamespaceSpecNS, "xmlns:" + ds, |
| 244 | Constants.SignatureSpecNS); |
| 245 | |
| 246 | return element; |
| 247 | |
| 248 | } |
| 249 | |
| 250 | |
| 251 | /** |
| 252 | * Returns true if the element is in XML Signature namespace and the local |
| 253 | * name equals the supplied one. |
| 254 | * |
| 255 | * @param element |
| 256 | * @param localName |
| 257 | * @return true if the element is in XML Signature namespace and the local name equals the supplied one |
| 258 | */ |
| 259 | public static boolean elementIsInSignatureSpace(Element element, |
| 260 | String localName) { |
| 261 | |
| 262 | if ((element == null) || |
| 263 | !Constants.SignatureSpecNS.equals(element.getNamespaceURI()) ){ |
| 264 | return false; |
| 265 | } |
| 266 | |
| 267 | if (!element.getLocalName().equals(localName)) { |
| 268 | return false; |
| 269 | } |
| 270 | |
| 271 | return true; |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Returns true if the element is in XML Encryption namespace and the local |
| 276 | * name equals the supplied one. |
| 277 | * |
| 278 | * @param element |
| 279 | * @param localName |
| 280 | * @return true if the element is in XML Encryption namespace and the local name equals the supplied one |
| 281 | */ |
| 282 | public static boolean elementIsInEncryptionSpace(Element element, |
| 283 | String localName) { |
| 284 | |
| 285 | if ((element == null) || |
| 286 | !EncryptionConstants.EncryptionSpecNS.equals(element.getNamespaceURI()) |
| 287 | ){ |
| 288 | return false; |
| 289 | } |
| 290 | |
| 291 | if (!element.getLocalName().equals(localName)) { |
| 292 | return false; |
| 293 | } |
| 294 | |
| 295 | return true; |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * This method returns the owner document of a particular node. |
| 300 | * This method is necessary because it <I>always</I> returns a |
| 301 | * {@link Document}. {@link Node#getOwnerDocument} returns <CODE>null</CODE> |
| 302 | * if the {@link Node} is a {@link Document}. |
| 303 | * |
| 304 | * @param node |
| 305 | * @return the owner document of the node |
| 306 | */ |
| 307 | public static Document getOwnerDocument(Node node) { |
| 308 | |
| 309 | if (node.getNodeType() == Node.DOCUMENT_NODE) { |
| 310 | return (Document) node; |
| 311 | } |
| 312 | try { |
| 313 | return node.getOwnerDocument(); |
| 314 | } catch (NullPointerException npe) { |
| 315 | throw new NullPointerException(I18n.translate("endorsed.jdk1.4.0") |
| 316 | + " Original message was \"" |
| 317 | + npe.getMessage() + "\""); |
| 318 | } |
| 319 | |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * This method returns the first non-null owner document of the Node's in this Set. |
| 324 | * This method is necessary because it <I>always</I> returns a |
| 325 | * {@link Document}. {@link Node#getOwnerDocument} returns <CODE>null</CODE> |
| 326 | * if the {@link Node} is a {@link Document}. |
| 327 | * |
| 328 | * @param xpathNodeSet |
| 329 | * @return the owner document |
| 330 | */ |
| 331 | public static Document getOwnerDocument(Set xpathNodeSet) { |
| 332 | NullPointerException npe = null; |
| 333 | Iterator iterator = xpathNodeSet.iterator(); |
| 334 | while(iterator.hasNext()) { |
| 335 | Node node = (Node) iterator.next(); |
| 336 | int nodeType =node.getNodeType(); |
| 337 | if (nodeType == Node.DOCUMENT_NODE) { |
| 338 | return (Document) node; |
| 339 | } |
| 340 | try { |
| 341 | if (nodeType==Node.ATTRIBUTE_NODE) { |
| 342 | return ((Attr)node).getOwnerElement().getOwnerDocument(); |
| 343 | } |
| 344 | return node.getOwnerDocument(); |
| 345 | } catch (NullPointerException e) { |
| 346 | npe = e; |
| 347 | } |
| 348 | |
| 349 | } |
| 350 | throw new NullPointerException(I18n.translate("endorsed.jdk1.4.0") |
| 351 | + " Original message was \"" |
| 352 | + (npe == null ? "" : npe.getMessage()) + "\""); |
| 353 | } |
| 354 | |
| 355 | |
| 356 | |
| 357 | /** |
| 358 | * Method createDSctx |
| 359 | * |
| 360 | * @param doc |
| 361 | * @param prefix |
| 362 | * @param namespace |
| 363 | * @return the element. |
| 364 | */ |
| 365 | public static Element createDSctx(Document doc, String prefix, |
| 366 | String namespace) { |
| 367 | |
| 368 | if ((prefix == null) || (prefix.trim().length() == 0)) { |
| 369 | throw new IllegalArgumentException("You must supply a prefix"); |
| 370 | } |
| 371 | |
| 372 | Element ctx = doc.createElementNS(null, "namespaceContext"); |
| 373 | |
| 374 | ctx.setAttributeNS(Constants.NamespaceSpecNS, "xmlns:" + prefix.trim(), |
| 375 | namespace); |
| 376 | |
| 377 | return ctx; |
| 378 | } |
| 379 | |
| 380 | |
| 381 | |
| 382 | /** |
| 383 | * Method addReturnToElement |
| 384 | * |
| 385 | * @param e |
| 386 | */ |
| 387 | public static void addReturnToElement(Element e) { |
| 388 | |
| 389 | Document doc = e.getOwnerDocument(); |
| 390 | |
| 391 | e.appendChild(doc.createTextNode("\n")); |
| 392 | } |
| 393 | |
| 394 | /** |
| 395 | * Method convertNodelistToSet |
| 396 | * |
| 397 | * @param xpathNodeSet |
| 398 | * @return the set with the nodelist |
| 399 | */ |
| 400 | public static Set convertNodelistToSet(NodeList xpathNodeSet) { |
| 401 | |
| 402 | if (xpathNodeSet == null) { |
| 403 | return new HashSet(); |
| 404 | } |
| 405 | |
| 406 | int length = xpathNodeSet.getLength(); |
| 407 | Set set = new HashSet(length); |
| 408 | |
| 409 | for (int i = 0; i < length; i++) { |
| 410 | set.add(xpathNodeSet.item(i)); |
| 411 | } |
| 412 | |
| 413 | return set; |
| 414 | } |
| 415 | |
| 416 | |
| 417 | /** |
| 418 | * This method spreads all namespace attributes in a DOM document to their |
| 419 | * children. This is needed because the XML Signature XPath transform |
| 420 | * must evaluate the XPath against all nodes in the input, even against |
| 421 | * XPath namespace nodes. Through a bug in XalanJ2, the namespace nodes are |
| 422 | * not fully visible in the Xalan XPath model, so we have to do this by |
| 423 | * hand in DOM spaces so that the nodes become visible in XPath space. |
| 424 | * |
| 425 | * @param doc |
| 426 | * @see <A HREF="http://nagoya.apache.org/bugzilla/show_bug.cgi?id=2650">Namespace axis resolution is not XPath compliant </A> |
| 427 | */ |
| 428 | public static void circumventBug2650(Document doc) { |
| 429 | |
| 430 | Element documentElement = doc.getDocumentElement(); |
| 431 | |
| 432 | // if the document element has no xmlns definition, we add xmlns="" |
| 433 | Attr xmlnsAttr = |
| 434 | documentElement.getAttributeNodeNS(Constants.NamespaceSpecNS, "xmlns"); |
| 435 | |
| 436 | if (xmlnsAttr == null) { |
| 437 | documentElement.setAttributeNS(Constants.NamespaceSpecNS, "xmlns", ""); |
| 438 | } |
| 439 | |
| 440 | XMLUtils.circumventBug2650internal(doc); |
| 441 | } |
| 442 | |
| 443 | /** |
| 444 | * This is the work horse for {@link #circumventBug2650}. |
| 445 | * |
| 446 | * @param node |
| 447 | * @see <A HREF="http://nagoya.apache.org/bugzilla/show_bug.cgi?id=2650">Namespace axis resolution is not XPath compliant </A> |
| 448 | */ |
| 449 | private static void circumventBug2650internal(Node node) { |
| 450 | Node parent=null; |
| 451 | Node sibling=null; |
| 452 | final String namespaceNs=Constants.NamespaceSpecNS; |
| 453 | do { |
| 454 | switch (node.getNodeType()) { |
| 455 | case Node.ELEMENT_NODE : |
| 456 | Element element = (Element) node; |
| 457 | if (!element.hasChildNodes()) |
| 458 | break; |
| 459 | if (element.hasAttributes()) { |
| 460 | NamedNodeMap attributes = element.getAttributes(); |
| 461 | int attributesLength = attributes.getLength(); |
| 462 | |
| 463 | for (Node child = element.getFirstChild(); child!=null; |
| 464 | child=child.getNextSibling()) { |
| 465 | |
| 466 | if (child.getNodeType() != Node.ELEMENT_NODE) { |
| 467 | continue; |
| 468 | } |
| 469 | Element childElement = (Element) child; |
| 470 | |
| 471 | for (int i = 0; i < attributesLength; i++) { |
| 472 | Attr currentAttr = (Attr) attributes.item(i); |
| 473 | if (!namespaceNs.equals(currentAttr.getNamespaceURI())) |
| 474 | continue; |
| 475 | if (childElement.hasAttributeNS(namespaceNs, |
| 476 | currentAttr.getLocalName())) { |
| 477 | continue; |
| 478 | } |
| 479 | childElement.setAttributeNS(namespaceNs, |
| 480 | currentAttr.getName(), |
| 481 | currentAttr.getNodeValue()); |
| 482 | |
| 483 | |
| 484 | } |
| 485 | } |
| 486 | } |
| 487 | case Node.ENTITY_REFERENCE_NODE : |
| 488 | case Node.DOCUMENT_NODE : |
| 489 | parent=node; |
| 490 | sibling=node.getFirstChild(); |
| 491 | break; |
| 492 | } |
| 493 | while ((sibling==null) && (parent!=null)) { |
| 494 | sibling=parent.getNextSibling(); |
| 495 | parent=parent.getParentNode(); |
| 496 | }; |
| 497 | if (sibling==null) { |
| 498 | return; |
| 499 | } |
| 500 | |
| 501 | node=sibling; |
| 502 | sibling=node.getNextSibling(); |
| 503 | } while (true); |
| 504 | } |
| 505 | |
| 506 | /** |
| 507 | * @param sibling |
| 508 | * @param nodeName |
| 509 | * @param number |
| 510 | * @return nodes with the constrain |
| 511 | */ |
| 512 | public static Element selectDsNode(Node sibling, String nodeName, int number) { |
| 513 | while (sibling!=null) { |
| 514 | if (nodeName.equals(sibling.getLocalName()) |
| 515 | && Constants.SignatureSpecNS.equals(sibling.getNamespaceURI())) { |
| 516 | if (number==0){ |
| 517 | return (Element)sibling; |
| 518 | } |
| 519 | number--; |
| 520 | } |
| 521 | sibling=sibling.getNextSibling(); |
| 522 | } |
| 523 | return null; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * @param sibling |
| 528 | * @param nodeName |
| 529 | * @param number |
| 530 | * @return nodes with the constrain |
| 531 | */ |
| 532 | |
| 533 | public static Element selectXencNode(Node sibling, String nodeName, int number) { |
| 534 | while (sibling!=null) { |
| 535 | if (nodeName.equals(sibling.getLocalName()) |
| 536 | && EncryptionConstants.EncryptionSpecNS.equals(sibling.getNamespaceURI())) { |
| 537 | if (number==0){ |
| 538 | return (Element)sibling; |
| 539 | } |
| 540 | number--; |
| 541 | } |
| 542 | sibling=sibling.getNextSibling(); |
| 543 | } |
| 544 | return null; |
| 545 | } |
| 546 | |
| 547 | |
| 548 | /** |
| 549 | * @param sibling |
| 550 | * @param nodeName |
| 551 | * @param number |
| 552 | * @return nodes with the constrain |
| 553 | */ |
| 554 | public static Text selectDsNodeText(Node sibling, String nodeName, int number) { |
| 555 | Node n=selectDsNode(sibling,nodeName,number); |
| 556 | if (n==null) { |
| 557 | return null; |
| 558 | } |
| 559 | n=n.getFirstChild(); |
| 560 | while (n!=null && n.getNodeType()!=Node.TEXT_NODE) { |
| 561 | n=n.getNextSibling(); |
| 562 | } |
| 563 | return (Text)n; |
| 564 | } |
| 565 | |
| 566 | /** |
| 567 | * @param sibling |
| 568 | * @param uri |
| 569 | * @param nodeName |
| 570 | * @param number |
| 571 | * @return nodes with the constrain |
| 572 | */ |
| 573 | public static Text selectNodeText(Node sibling, String uri, String nodeName, int number) { |
| 574 | Node n=selectNode(sibling,uri,nodeName,number); |
| 575 | if (n==null) { |
| 576 | return null; |
| 577 | } |
| 578 | n=n.getFirstChild(); |
| 579 | while (n!=null && n.getNodeType()!=Node.TEXT_NODE) { |
| 580 | n=n.getNextSibling(); |
| 581 | } |
| 582 | return (Text)n; |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * @param sibling |
| 587 | * @param uri |
| 588 | * @param nodeName |
| 589 | * @param number |
| 590 | * @return nodes with the constrain |
| 591 | */ |
| 592 | public static Element selectNode(Node sibling, String uri,String nodeName, int number) { |
| 593 | while (sibling!=null) { |
| 594 | if (nodeName.equals(sibling.getLocalName()) |
| 595 | && uri.equals(sibling.getNamespaceURI())) { |
| 596 | if (number==0){ |
| 597 | return (Element)sibling; |
| 598 | } |
| 599 | number--; |
| 600 | } |
| 601 | sibling=sibling.getNextSibling(); |
| 602 | } |
| 603 | return null; |
| 604 | } |
| 605 | |
| 606 | /** |
| 607 | * @param sibling |
| 608 | * @param nodeName |
| 609 | * @return nodes with the constrain |
| 610 | */ |
| 611 | public static Element[] selectDsNodes(Node sibling,String nodeName) { |
| 612 | return selectNodes(sibling,Constants.SignatureSpecNS,nodeName); |
| 613 | } |
| 614 | |
| 615 | /** |
| 616 | * @param sibling |
| 617 | * @param uri |
| 618 | * @param nodeName |
| 619 | * @return nodes with the constrain |
| 620 | */ |
| 621 | public static Element[] selectNodes(Node sibling,String uri,String nodeName) { |
| 622 | int size=20; |
| 623 | Element[] a= new Element[size]; |
| 624 | int curr=0; |
| 625 | //List list=new ArrayList(); |
| 626 | while (sibling!=null) { |
| 627 | if (nodeName.equals(sibling.getLocalName()) |
| 628 | && uri.equals(sibling.getNamespaceURI())) { |
| 629 | a[curr++]=(Element)sibling; |
| 630 | if (size<=curr) { |
| 631 | int cursize= size<<2; |
| 632 | Element []cp=new Element[cursize]; |
| 633 | System.arraycopy(a,0,cp,0,size); |
| 634 | a=cp; |
| 635 | size=cursize; |
| 636 | } |
| 637 | } |
| 638 | sibling=sibling.getNextSibling(); |
| 639 | } |
| 640 | Element []af=new Element[curr]; |
| 641 | System.arraycopy(a,0,af,0,curr); |
| 642 | return af; |
| 643 | } |
| 644 | |
| 645 | /** |
| 646 | * @param signatureElement |
| 647 | * @param inputSet |
| 648 | * @return nodes with the constrain |
| 649 | */ |
| 650 | public static Set excludeNodeFromSet(Node signatureElement, Set inputSet) { |
| 651 | Set resultSet = new HashSet(); |
| 652 | Iterator iterator = inputSet.iterator(); |
| 653 | |
| 654 | while (iterator.hasNext()) { |
| 655 | Node inputNode = (Node) iterator.next(); |
| 656 | |
| 657 | if (!XMLUtils |
| 658 | .isDescendantOrSelf(signatureElement, inputNode)) { |
| 659 | resultSet.add(inputNode); |
| 660 | } |
| 661 | } |
| 662 | return resultSet; |
| 663 | } |
| 664 | |
| 665 | /** |
| 666 | * Returns true if the descendantOrSelf is on the descendant-or-self axis |
| 667 | * of the context node. |
| 668 | * |
| 669 | * @param ctx |
| 670 | * @param descendantOrSelf |
| 671 | * @return true if the node is descendant |
| 672 | */ |
| 673 | static public boolean isDescendantOrSelf(Node ctx, Node descendantOrSelf) { |
| 674 | |
| 675 | if (ctx == descendantOrSelf) { |
| 676 | return true; |
| 677 | } |
| 678 | |
| 679 | Node parent = descendantOrSelf; |
| 680 | |
| 681 | while (true) { |
| 682 | if (parent == null) { |
| 683 | return false; |
| 684 | } |
| 685 | |
| 686 | if (parent == ctx) { |
| 687 | return true; |
| 688 | } |
| 689 | |
| 690 | if (parent.getNodeType() == Node.ATTRIBUTE_NODE) { |
| 691 | parent = ((Attr) parent).getOwnerElement(); |
| 692 | } else { |
| 693 | parent = parent.getParentNode(); |
| 694 | } |
| 695 | } |
| 696 | } |
| 697 | } |