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/*******************************************************************************
* Copyright (c) 2011, 2015 Mia-Software, CEA LIST, Christian W. Damus, and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Nicolas Bros (Mia-Software) - Bug 366567 - [Releng] Tool to update rmaps
* Camille Letavernier (CEA LIST) - Generalize to support POMs
* Christian W. Damus (CEA) - Add support for updating Oomph setup models
* Christian W. Damus - Support updating of multiple selected files
*
*******************************************************************************/
package org.eclipse.papyrus.releng.tools.internal.popup.actions;
import java.io.File;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import org.eclipse.b3.aggregator.Contribution;
import org.eclipse.b3.aggregator.MappedRepository;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.common.util.EList;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.osgi.util.NLS;
import org.eclipse.papyrus.releng.tools.internal.Activator;
import org.eclipse.swt.widgets.Shell;
import org.w3c.dom.Comment;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public abstract class DependencyUpdater {
private final Pattern commentPattern = Pattern.compile("updateFrom\\s*\\(\\s*\"(.*?)\"\\s*,\\s*(\\d+)\\s*\\)"); //$NON-NLS-1$
private final Pattern typicalBuildTimestampPattern = Pattern.compile("[NISMR](?:-\\d+\\.\\d+(?:\\.\\d+)?(?:M|RC)\\d[abcd]-)?20\\d\\d[-0-9]+"); //$NON-NLS-1$
public DependencyUpdater() {
super();
}
protected static final String PREFIX = "http://download.eclipse.org/"; //$NON-NLS-1$
public abstract boolean canUpdate(IFile file);
public void updateDocument(final Shell parentShell, final IFile mapFile, final EList<Contribution> contributions, final Map<Object, Object> context) throws CoreException {
try {
File rmapFile = mapFile.getLocation().toFile();
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse(rmapFile);
doc.normalize();
Element documentElement = doc.getDocumentElement();
XPath xpath = XPathFactory.newInstance().newXPath();
NodeList uris = (NodeList) xpath.evaluate(getXpath(), documentElement, XPathConstants.NODESET);
for (int i = 0; i < uris.getLength(); i++) {
Node uri = uris.item(i);
Node precedingComment = getPrecedingComment(uri);
if (precedingComment != null) {
String comment = getCommentContent(precedingComment);
Matcher matcher = getCommentPattern().matcher(comment);
if (matcher.find()) {
String contributionName = matcher.group(1);
int repositoryIndex = Integer.parseInt(matcher.group(2));
Contribution contribution = findContribution(contributions, contributionName);
if (contribution == null) {
throw new RuntimeException("'updateFrom' failed: cannot find contribution with label \"" + contributionName + "\""); //$NON-NLS-1$ //$NON-NLS-2$
}
updateWithContribution(parentShell, uri, contribution, repositoryIndex, context);
} else if (comment.contains("updateFrom")) { //$NON-NLS-1$
throw new Exception("Wrong syntax for 'updateFrom' : should be " + getCommentSyntax()); //$NON-NLS-1$
}
}
}
save(doc, rmapFile);
mapFile.refreshLocal(IResource.DEPTH_ZERO, new NullProgressMonitor());
} catch (Exception e) {
throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Error updating map: " + e.getLocalizedMessage(), e)); //$NON-NLS-1$
}
}
protected void save(Document document, File destination) throws Exception {
Transformer transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes"); //$NON-NLS-1$
StreamResult result = new StreamResult(destination);
DOMSource source = new DOMSource(document);
transformer.transform(source, result);
}
protected void updateWithContribution(final Shell parentShell, final Node uri, final Contribution contribution, final int repositoryIndex, final Map<Object, Object> context) {
EList<MappedRepository> repositories = contribution.getRepositories();
if (repositoryIndex >= repositories.size()) {
throw new RuntimeException("wrong index in updateFrom(\"" + contribution.getLabel() + "\"" + repositoryIndex //$NON-NLS-1$ //$NON-NLS-2$
+ ") : there are " + repositories.size() + " contributions"); //$NON-NLS-1$ //$NON-NLS-2$
}
String location = repositories.get(repositoryIndex).getLocation();
String current = getCurrentLocation(uri);
if ((current == null) || !current.equals(location)) {
if ((current == null) || current.isEmpty()
|| isLocationSimilar(current, location) || promptToReplace(parentShell, contribution.getLabel(), current, location, context)) {
updateUri(uri, location);
}
}
}
protected abstract String getCurrentLocation(Node uri);
protected abstract void updateUri(Node uri, String location);
protected Contribution findContribution(Iterable<? extends Contribution> contributions, final String contributionName) {
Contribution matchingContribution = null;
for (Contribution contribution : contributions) {
if (contributionName.equalsIgnoreCase(contribution.getLabel())) {
matchingContribution = contribution;
}
}
return matchingContribution;
}
protected Node getPrecedingComment(final Node node) {
Comment comment = null;
Node previous = node.getPreviousSibling();
while (previous != null) {
if (previous.getNodeType() == Node.COMMENT_NODE) {
comment = (Comment) previous;
break;
} else if (previous.getNodeType() != Node.TEXT_NODE) {
break;
}
previous = previous.getPreviousSibling();
}
return comment;
}
protected Pattern getCommentPattern() {
return commentPattern;
}
protected String getCommentContent(Node comment) {
return comment.getTextContent();
}
protected String getCommentSyntax() {
return "updateFrom(\"<contributionName>\",<index>)"; //$NON-NLS-1$
}
protected abstract String getXpath();
protected boolean isLocationSimilar(String oldLocation, String newLocation) {
boolean result = true; // Optimistically assume sameness if we can't find any build timestamps
Matcher oldMatcher = typicalBuildTimestampPattern.matcher(oldLocation);
Matcher newMatcher = typicalBuildTimestampPattern.matcher(newLocation);
boolean foundOld = oldMatcher.find();
boolean foundNew = newMatcher.find();
if (foundOld != foundNew) {
// definitely different
result = false;
} else if (foundNew) {
// Compare prefixes
String oldPrefix = oldLocation.substring(0, oldMatcher.start());
String newPrefix = newLocation.substring(0, newMatcher.start());
result = newPrefix.equals(oldPrefix);
}
return result;
}
protected boolean promptToReplace(Shell parentShell, String contributionName, String oldLocation, String newLocation, Map<Object, Object> context) {
String key = "$replace$::" + contributionName; //$NON-NLS-1$
Boolean result = (Boolean) context.get(key);
if (result == null) {
String message = NLS.bind("The new location \"{0}\" for project \"{1}\" is not like the current location \"{2}\". This could roll back to a previous (obsolete) version. Update anyways?", new Object[] { newLocation, contributionName, oldLocation });
result = MessageDialog.openQuestion(parentShell, "Confirm Location Update", message);
context.put(key, result);
}
return result;
}
}
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