| /* |
| * 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 freemarker.ext.dom; |
| |
| import freemarker.core.Environment; |
| import freemarker.template.Template; |
| |
| /** |
| * For internal use only; don't depend on this, there's no backward compatibility guarantee at all! |
| * This class is to work around the lack of module system in Java, i.e., so that other FreeMarker packages can |
| * access things inside this package that users shouldn't. |
| */ |
| final class DomStringUtil { |
| |
| private DomStringUtil() { |
| // Not meant to be instantiated |
| } |
| |
| static boolean isXMLNameLike(String name) { |
| return isXMLNameLike(name, 0); |
| } |
| |
| /** |
| * Check if the name looks like an XML element name. |
| * |
| * @param firstCharIdx The index of the character in the string parameter that we treat as the beginning of the |
| * string to check. This is to spare substringing that has become more expensive in Java 7. |
| * |
| * @return whether the name is a valid XML element name. (This routine might only be 99% accurate. REVISIT) |
| */ |
| static boolean isXMLNameLike(String name, int firstCharIdx) { |
| int ln = name.length(); |
| for (int i = firstCharIdx; i < ln; i++) { |
| char c = name.charAt(i); |
| if (i == firstCharIdx && (c == '-' || c == '.' || Character.isDigit(c))) { |
| return false; |
| } |
| if (!Character.isLetterOrDigit(c) && c != '_' && c != '-' && c != '.') { |
| if (c == ':') { |
| if (i + 1 < ln && name.charAt(i + 1) == ':') { |
| // "::" is used in XPath |
| return false; |
| } |
| // We don't return here, as a lonely ":" is allowed. |
| } else { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * @return whether the qname matches the combination of nodeName, nsURI, and environment prefix settings. |
| */ |
| static boolean matchesName(String qname, String nodeName, String nsURI, Environment env) { |
| String defaultNS = env.getDefaultNS(); |
| if ((defaultNS != null) && defaultNS.equals(nsURI)) { |
| return qname.equals(nodeName) |
| || qname.equals(Template.DEFAULT_NAMESPACE_PREFIX + ":" + nodeName); |
| } |
| if ("".equals(nsURI)) { |
| if (defaultNS != null) { |
| return qname.equals(Template.NO_NS_PREFIX + ":" + nodeName); |
| } else { |
| return qname.equals(nodeName) || qname.equals(Template.NO_NS_PREFIX + ":" + nodeName); |
| } |
| } |
| String prefix = env.getPrefixForNamespace(nsURI); |
| if (prefix == null) { |
| return false; // Is this the right thing here??? |
| } |
| return qname.equals(prefix + ":" + nodeName); |
| } |
| |
| } |