| /* |
| * Copyright 2002-2005 Sascha Weinreuter |
| * |
| * Licensed 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.intellij.plugins.xpathView.support.jaxen; |
| |
| import org.intellij.plugins.xpathView.XPathExpressionGenerator; |
| import org.intellij.plugins.xpathView.support.XPathSupport; |
| import org.intellij.plugins.xpathView.support.jaxen.extensions.FunctionImplementation; |
| import org.intellij.plugins.xpathView.util.Namespace; |
| import org.intellij.plugins.xpathView.util.NamespaceCollector; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.psi.xml.XmlElement; |
| import com.intellij.psi.xml.XmlFile; |
| import com.intellij.psi.xml.XmlTag; |
| |
| import org.intellij.lang.xpath.context.functions.Function; |
| import org.intellij.lang.xpath.context.functions.XPathFunctionProvider; |
| |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import org.jaxen.JaxenException; |
| import org.jaxen.SimpleNamespaceContext; |
| import org.jaxen.UnresolvableException; |
| import org.jaxen.XPath; |
| import org.jaxen.XPathFunctionContext; |
| |
| import javax.xml.namespace.QName; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| |
| class XPathSupportImpl extends XPathSupport { |
| private static final Logger LOG = Logger.getInstance("org.intellij.plugins.xpathView.support.jaxen.XPathSupportImpl"); |
| |
| public XPath createXPath(@NotNull XmlFile file, String expression) throws JaxenException { |
| final PsiXPath xpath = new PsiXPath(file, expression); |
| xpath.setFunctionContext(new MyXPathFunctionContext()); |
| xpath.setNamespaceContext(new MySimpleNamespaceContext(NamespaceCollector.findNamespaces(file))); |
| |
| return xpath; |
| } |
| |
| public XPath createXPath(@Nullable XmlFile psiFile, String expression, @NotNull Collection<Namespace> namespaces) throws JaxenException { |
| final PsiXPath xpath = new PsiXPath(psiFile, expression); |
| xpath.setFunctionContext(new MyXPathFunctionContext()); |
| xpath.setNamespaceContext(new MySimpleNamespaceContext(NamespaceCollector.convert(namespaces))); |
| |
| return xpath; |
| } |
| |
| public String getUniquePath(XmlElement element, XmlTag context) { |
| return XPathExpressionGenerator.getUniquePath(element, context); |
| } |
| |
| public String getPath(XmlElement element, XmlTag context) { |
| return XPathExpressionGenerator.getPath(element, context); |
| } |
| |
| private static class MySimpleNamespaceContext extends SimpleNamespaceContext { |
| public MySimpleNamespaceContext(Map<String, String> map) { |
| super(map); |
| } |
| |
| public String translateNamespacePrefixToUri(String prefix) { |
| final String uri = super.translateNamespacePrefixToUri(prefix); |
| // avoid matching of undefined prefixes on default namespace |
| if (prefix != null && prefix.length() > 0) { |
| if (uri == null) { |
| LOG.debug("Undefined prefix: " + prefix); |
| return "urn:xpathview:undefined-namespace"; |
| } else { |
| return uri; |
| } |
| } else { |
| // Don't resolve empty prefix to anything. This is called by Jaxen for internal function resolving |
| // and this will break when anything else than null is returned. |
| LOG.debug("Empty prefix, returning null (uri=" + uri + ")"); |
| return null; |
| } |
| } |
| } |
| |
| private static class MyXPathFunctionContext extends XPathFunctionContext { |
| public MyXPathFunctionContext() { |
| final List<Pair<QName,? extends Function>> functions = XPathFunctionProvider.getAvailableFunctions(TYPE); |
| for (Pair<QName,? extends Function> function : functions) { |
| final Function f = function.getSecond(); |
| final QName name = function.getFirst(); |
| final String namespaceURI = "".equals(name.getNamespaceURI()) ? null : name.getNamespaceURI(); |
| if (f instanceof FunctionImplementation) { |
| registerFunction(namespaceURI, name.getLocalPart(), ((FunctionImplementation)f).getImplementation()); |
| } else { |
| try { |
| super.getFunction(namespaceURI, name.getPrefix(), name.getLocalPart()); |
| } catch (UnresolvableException e) { |
| LOG.info("Warning: Unresolvable extension function: " + name + " - " + f); |
| } |
| } |
| } |
| } |
| } |
| } |