| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.axiom.dom; |
| |
| import static org.apache.axiom.util.xml.XMLChar.isNameChar; |
| import static org.apache.axiom.util.xml.XMLChar.isNameStartChar; |
| |
| import javax.xml.XMLConstants; |
| |
| import org.w3c.dom.DOMException; |
| |
| public final class NSUtil { |
| private NSUtil() {} |
| |
| public static void validateName(String name) throws DOMException { |
| if (name.length() == 0) { |
| throw DOMExceptionUtil.newDOMException(DOMException.INVALID_CHARACTER_ERR); |
| } |
| for (int i=0; i<name.length(); i++) { |
| char c = name.charAt(i); |
| if (i == 0 && !isNameStartChar(c) || i > 0 && !isNameChar(c)) { |
| throw DOMExceptionUtil.newDOMException(DOMException.INVALID_CHARACTER_ERR); |
| } |
| } |
| } |
| |
| public static void validatePrefix(String prefix) throws DOMException { |
| for (int i=0; i<prefix.length(); i++) { |
| char c = prefix.charAt(i); |
| if (c == ':') { |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| if (i == 0 && !isNameStartChar(c) || i > 0 && !isNameChar(c)) { |
| throw DOMExceptionUtil.newDOMException(DOMException.INVALID_CHARACTER_ERR); |
| } |
| } |
| } |
| |
| public static int validateQualifiedName(String qualifiedName) throws DOMException { |
| if (qualifiedName.length() == 0) { |
| throw DOMExceptionUtil.newDOMException(DOMException.INVALID_CHARACTER_ERR); |
| } |
| int colonPosition = -1; |
| boolean checkNameStart = true; |
| for (int i=0; i<qualifiedName.length(); i++) { |
| char c = qualifiedName.charAt(i); |
| if (c == ':') { |
| if (colonPosition == -1 && i > 0) { |
| colonPosition = i; |
| checkNameStart = true; |
| } else { |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| } else if (checkNameStart) { |
| if (!isNameStartChar(c)) { |
| throw DOMExceptionUtil.newDOMException(isNameChar(c) ? DOMException.NAMESPACE_ERR : DOMException.INVALID_CHARACTER_ERR); |
| } |
| checkNameStart = false; |
| } else if (!isNameChar(c)) { |
| throw DOMExceptionUtil.newDOMException(DOMException.INVALID_CHARACTER_ERR); |
| } |
| } |
| if (checkNameStart) { |
| // If we get here, then the qualified name ends with a colon |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| return colonPosition; |
| } |
| |
| public static String normalizeNamespaceURI(String namespaceURI) { |
| return namespaceURI == null ? "" : namespaceURI; |
| } |
| |
| public static void validateNamespace(String namespaceURI, String prefix) { |
| if (prefix.length() != 0 && namespaceURI.length() == 0) { |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| if (XMLConstants.XML_NS_PREFIX.equals(prefix) && !XMLConstants.XML_NS_URI.equals(namespaceURI)) { |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| } |
| |
| public static void validateAttributeName(String namespaceURI, String localName, String prefix) { |
| validateNamespace(namespaceURI, prefix); |
| if (prefix.length() == 0 && localName.equals(XMLConstants.XMLNS_ATTRIBUTE) && !namespaceURI.equals(XMLConstants.XMLNS_ATTRIBUTE_NS_URI)) { |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) { |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| } |
| |
| public static String getDeclaredPrefix(String localName, String prefix) { |
| if (prefix.equals(XMLConstants.XMLNS_ATTRIBUTE)) { |
| return localName; |
| } else if (prefix.length() == 0 && localName.equals(XMLConstants.XMLNS_ATTRIBUTE)) { |
| return ""; |
| } else { |
| throw DOMExceptionUtil.newDOMException(DOMException.NAMESPACE_ERR); |
| } |
| } |
| } |