| /******************************************************************************* |
| * Copyright (c) 2013, 2018 Red Hat, Inc. |
| * |
| * This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 |
| * which is available at https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Red Hat Incorporated - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.linuxtools.rpmstubby; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.DocumentBuilderFactory; |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.xpath.XPath; |
| import javax.xml.xpath.XPathExpressionException; |
| import javax.xml.xpath.XPathFactory; |
| |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.linuxtools.internal.rpmstubby.StubbyLog; |
| import org.w3c.dom.Document; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Utility class for RPMStubby to find the parent pom |
| * |
| * @since 1.2 |
| */ |
| public class RPMStubbyUtils { |
| |
| private DocumentBuilder builder; |
| private XPath xPath; |
| private static final String PARENT_NODE = "/project/parent"; |
| |
| /** |
| * Constructor. |
| * |
| */ |
| public RPMStubbyUtils() { |
| DocumentBuilderFactory builderFactory = |
| DocumentBuilderFactory.newInstance(); |
| builder = null; |
| try { |
| builder = builderFactory.newDocumentBuilder(); |
| } catch (ParserConfigurationException e) { |
| StubbyLog.logError(e); |
| } |
| xPath = XPathFactory.newInstance().newXPath(); |
| } |
| |
| /** |
| * Find the parent pom.xml of a file by recursively checking |
| * the current directory for the parent pom.xml and moving up |
| * the directory structure if there is none. |
| * |
| * @param folderPath The container of the file to check. |
| * @return The path of the parent pom. Null otherwise. |
| */ |
| public boolean findPom(IPath folderPath) { |
| IPath filePath = folderPath.append(new Path("pom.xml")); |
| File file = filePath.toFile(); |
| boolean rc = false; |
| if (file.exists()) { |
| try { |
| Document xmlDocument = builder.parse(new FileInputStream(file)); |
| String parent = xPath.compile(PARENT_NODE).evaluate(xmlDocument); |
| if (!parent.equals("")) { |
| rc = findPom(folderPath.removeLastSegments(1)); |
| } else { |
| rc = true; |
| } |
| } catch (SAXException | IOException | XPathExpressionException e) { |
| StubbyLog.logError(e); |
| } |
| } |
| return rc; |
| } |
| } |