package org.eclipse.core.internal.resources;
import java.io.*;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.core.internal.utils.FileUtil;
import org.eclipse.core.internal.utils.Messages;
import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.*;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener;
import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent;
import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.osgi.util.NLS;
public class CheckMissingNaturesListener implements IResourceChangeListener, IPreferenceChangeListener {
public static final String MARKER_TYPE = ResourcesPlugin.getPlugin().getBundle().getSymbolicName() + ".unknownNature";
public static final String NATURE_ID_ATTRIBUTE = "natureId";
@Override
public void resourceChanged(IResourceChangeEvent event) {
if (event.getDelta() == null) {
return;
}
try {
final Set<IProject> modifiedProjects = new HashSet<>();
event.getDelta().accept(delta -> {
if (delta.getResource() != null && delta.getResource().getType() == IResource.PROJECT && (delta.getKind() == IResourceDelta.ADDED || delta.getKind() == IResourceDelta.CHANGED)) {
modifiedProjects.add((IProject) delta.getResource());
}
return delta.getResource() == null || delta.getResource().getType() == IResource.ROOT;
});
updateMarkers(modifiedProjects);
} catch (CoreException e) {
ResourcesPlugin.getPlugin().getLog().log(new Status(IStatus.ERROR, ResourcesPlugin.getPlugin().getBundle().getSymbolicName(), e.getMessage(), e));
}
}
int getMissingNatureSeverity(final IProject project) {
int severity = PreferenceInitializer.PREF_MISSING_NATURE_MARKER_SEVERITY_DEFAULT;
IEclipsePreferences node = InstanceScope.INSTANCE.getNode(ResourcesPlugin.PI_RESOURCES);
if (node != null) {
severity = node.getInt(ResourcesPlugin.PREF_MISSING_NATURE_MARKER_SEVERITY, PreferenceInitializer.PREF_MISSING_NATURE_MARKER_SEVERITY_DEFAULT);
}
return severity;
}
@Override
public void preferenceChange(PreferenceChangeEvent event) {
if (ResourcesPlugin.PREF_MISSING_NATURE_MARKER_SEVERITY.equals(event.getKey())) {
final int newSeverity = event.getNewValue() != null ? Integer.parseInt((String) event.getNewValue()) : PreferenceInitializer.PREF_MISSING_NATURE_MARKER_SEVERITY_DEFAULT;
final int oldSeverity = event.getOldValue() != null ? Integer.parseInt((String) event.getOldValue()) : PreferenceInitializer.PREF_MISSING_NATURE_MARKER_SEVERITY_DEFAULT;
if (newSeverity < 0) {
removeAllMarkers(ResourcesPlugin.getWorkspace().getRoot());
} else if (oldSeverity < 0 && newSeverity >= 0) {
updateMarkers(Arrays.asList(ResourcesPlugin.getWorkspace().getRoot().getProjects()));
} else {
updateExistingMarkersSeverity(ResourcesPlugin.getWorkspace().getRoot(), newSeverity);
}
}
}
private void removeAllMarkers(IContainer workspaceRootOrProject) {
final Collection<IMarker> markers = getRelatedMarkers(workspaceRootOrProject);
if (markers.isEmpty()) {
return;
}
WorkspaceJob job = new WorkspaceJob(Messages.updateUnknownNatureMarkers) {
@Override
public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
for (IMarker marker : markers) {
if (marker.exists() && marker.getResource().isAccessible()) {
marker.delete();
}
}
return Status.OK_STATUS;
}
@Override
public boolean belongsTo(Object family) {
return super.belongsTo(family) || MARKER_TYPE.equals(family);
}
};
job.setUser(false);
job.setSystem(true);
job.setPriority(Job.DECORATE);
job.setRule(workspaceRootOrProject);
job.schedule();
}
private void (IContainer workspaceRootOrProject, int newSeverity) {
final Collection<IMarker> markers = getRelatedMarkers(workspaceRootOrProject);
if (markers.isEmpty()) {
return;
}
WorkspaceJob job = new WorkspaceJob(Messages.updateUnknownNatureMarkers) {
@Override
public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
for (IMarker marker : markers) {
if (marker.exists() && marker.getResource().isAccessible()) {
marker.setAttribute(IMarker.SEVERITY, newSeverity);
}
}
return Status.OK_STATUS;
}
@Override
public boolean belongsTo(Object family) {
return super.belongsTo(family) || MARKER_TYPE.equals(family);
}
};
job.setUser(false);
job.setSystem(true);
job.setPriority(Job.DECORATE);
job.setRule(workspaceRootOrProject);
job.schedule();
}
private void updateMarkers(Collection<IProject> projects) {
for (IProject project : projects) {
if (!project.isAccessible()) {
continue;
}
int severity = getMissingNatureSeverity(project);
try {
if (severity < 0) {
removeAllMarkers(project);
continue;
}
final Set<String> missingNatures = new HashSet<>();
for (String natureId : project.getDescription().getNatureIds()) {
if (project.getWorkspace().getNatureDescriptor(natureId) == null) {
missingNatures.add(natureId);
}
}
final Set<IMarker> toRemove = new HashSet<>();
for (IMarker existingMarker : getRelatedProjectMarkers(project)) {
String markerNature = existingMarker.getAttribute(NATURE_ID_ATTRIBUTE, "");
if (!missingNatures.contains(markerNature)) {
toRemove.add(existingMarker);
} else {
missingNatures.remove(markerNature);
}
}
if (!toRemove.isEmpty() || !missingNatures.isEmpty()) {
WorkspaceJob workspaceJob = new WorkspaceJob(Messages.updateUnknownNatureMarkers) {
@Override
public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
for (IMarker marker : toRemove) {
marker.delete();
}
IResource targetResource = project.getFile(IProjectDescription.DESCRIPTION_FILE_NAME);
if (!targetResource.isAccessible()) {
targetResource = project;
}
for (String natureId : missingNatures) {
IMarker marker = targetResource.createMarker(MARKER_TYPE);
marker.setAttribute(IMarker.SEVERITY, getMissingNatureSeverity(project));
marker.setAttribute(IMarker.MESSAGE, NLS.bind(Messages.natures_missingNature, natureId));
marker.setAttribute(NATURE_ID_ATTRIBUTE, natureId);
if (targetResource.getType() == IResource.FILE) {
updateRange(marker, natureId, (IFile) targetResource);
}
}
return Status.OK_STATUS;
}
@Override
public boolean belongsTo(Object family) {
return super.belongsTo(family) || MARKER_TYPE.equals(family);
}
};
workspaceJob.setRule(project);
workspaceJob.setUser(false);
workspaceJob.setSystem(true);
workspaceJob.setPriority(Job.DECORATE);
workspaceJob.schedule();
}
} catch (CoreException e) {
ResourcesPlugin.getPlugin().getLog().log(new Status(IStatus.ERROR, ResourcesPlugin.PI_RESOURCES, e.getMessage(), e));
}
}
}
protected void updateRange(IMarker marker, String natureId, IFile file) {
if (!file.isAccessible()) {
return;
}
Pattern pattern = Pattern.compile(".*<" + IModelObjectConstants.NATURE + ">\\s*(" + natureId.replace(".", "\\.") + ")\\s*</" + IModelObjectConstants.NATURE + ">.*",
Pattern.DOTALL);
try (
InputStream input = file.getContents();
ByteArrayOutputStream output = new ByteArrayOutputStream();
) {
IPath path = file.getLocation();
if (path == null) {
path = file.getFullPath();
}
FileUtil.transferStreams(input, output, path.toString(), new NullProgressMonitor());
String content = output.toString();
Matcher matcher = pattern.matcher(content);
if (matcher.matches() && matcher.groupCount() > 0) {
marker.setAttribute(IMarker.CHAR_START, matcher.start(1));
marker.setAttribute(IMarker.CHAR_END, matcher.end(1));
}
} catch (IOException | CoreException e) {
ResourcesPlugin.getPlugin().getLog().log(new Status(IStatus.ERROR, ResourcesPlugin.PI_RESOURCES, e.getMessage(), e));
}
}
protected Collection<IMarker> getRelatedMarkers(IContainer rootOrProject) {
switch (rootOrProject.getType()) {
case IResource.ROOT :
return getRelatedRootMarkers((IWorkspaceRoot) rootOrProject);
case IResource.PROJECT :
return getRelatedProjectMarkers((IProject) rootOrProject);
}
return Collections.emptyList();
}
protected Collection<IMarker> getRelatedRootMarkers(IWorkspaceRoot root) {
if (!root.isAccessible()) {
return Collections.emptyList();
}
Set<IMarker> res = new HashSet<>();
for (IProject project : root.getProjects()) {
res.addAll(getRelatedProjectMarkers(project));
}
return res;
}
protected Collection<IMarker> getRelatedProjectMarkers(IProject project) {
if (!project.isAccessible()) {
return Collections.emptyList();
}
try {
return Arrays.asList(project.findMarkers(MARKER_TYPE, true, IResource.DEPTH_ONE));
} catch (CoreException e) {
ResourcesPlugin.getPlugin().getLog().log(new Status(IStatus.ERROR, ResourcesPlugin.PI_RESOURCES, e.getMessage(), e));
return Collections.emptyList();
}
}
}
CheckMissingNaturesListener
getMissingNatureSeverity(IProject): int
removeAllMarkers(IContainer): void
updateRange(IMarker, String, IFile): void
