| /* |
| * Copyright 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.extensions; |
| |
| import org.intellij.lang.xpath.context.functions.Parameter; |
| import org.intellij.lang.xpath.psi.XPathType; |
| import org.jetbrains.annotations.Nullable; |
| |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.psi.PsiFile; |
| |
| class FileExtensionFunction extends BasicFileInfoFunction { |
| public FileExtensionFunction() { |
| super("file-ext", XPathType.STRING, new Parameter(XPathType.NODESET, Parameter.Kind.OPTIONAL)); |
| } |
| |
| @Nullable |
| protected Object extractInfo(PsiFile psiFile) { |
| final VirtualFile virtualFile = psiFile.getVirtualFile(); |
| return virtualFile != null ? virtualFile.getExtension() : null; |
| } |
| } |