Java Code Examples for org.eclipse.core.filesystem.IFileStore#fetchInfo()

private void rememberExisitingFolders(URI projectLocation) {
	this.orginalFolders = new TreeMap<>();

	try {
		final IFileStore[] children = EFS.getStore(projectLocation).childStores(EFS.NONE, null);
		for (int i = 0; i < children.length; i++) {
			final IFileStore child = children[i];
			final IFileInfo info = child.fetchInfo();
			if (info.isDirectory() && info.exists() && !this.orginalFolders.containsKey(info.getName())) {
				this.orginalFolders.put(info.getName(), child);
			}
		}
	} catch (CoreException e) {
		SARLEclipsePlugin.getDefault().log(e);
	}
}
 

private void rememberExisitingFolders(URI projectLocation) {
	fOrginalFolders= new HashSet<IFileStore>();

	try {
		IFileStore[] children= EFS.getStore(projectLocation).childStores(EFS.NONE, null);
		for (int i= 0; i < children.length; i++) {
			IFileStore child= children[i];
			IFileInfo info= child.fetchInfo();
			if (info.isDirectory() && info.exists() && !fOrginalFolders.contains(child.getName())) {
				fOrginalFolders.add(child);
			}
		}
	} catch (CoreException e) {
		JavaPlugin.log(e);
	}
}
 

private Iterable<Pair<IStorage, IProject>> getStorages(/* @NonNull */ URI uri, IFile file) {
	if (file == null || !file.isAccessible()) {
		Iterable<Pair<IStorage, IProject>> result = contribution.getStorages(uri);
		if (result == null || !result.iterator().hasNext()) {
			 // Handle files external to the workspace. But check contribution first to be backwards compatible.
			if (uri.isFile()) {
				Path filePath = new Path(uri.toFileString());
				IFileStore fileStore = EFS.getLocalFileSystem().getStore(filePath);
				IFileInfo fileInfo = fileStore.fetchInfo();
				if (fileInfo.exists() && !fileInfo.isDirectory()) {
					return Collections.singletonList(
							Tuples.<IStorage, IProject> create(new FileStoreStorage(fileStore, fileInfo, filePath), (IProject) null));
				}
			}
		}
		return result;
	}
	return Collections.singleton(Tuples.<IStorage, IProject> create(file, file.getProject()));
}
 

public static IEditorPart openFileInFileSystem(final URI uri) throws PartInitException {
	if (uri == null) { return null; }
	IFileStore fileStore;
	try {
		fileStore = EFS.getLocalFileSystem().getStore(Path.fromOSString(uri.toFileString()));
	} catch (final Exception e1) {
		MessageDialog.openWarning(WorkbenchHelper.getShell(), "No file found",
				"The file'" + uri.toString() + "' cannot be found.");
		return null;
	}
	IFileInfo info;
	try {
		info = fileStore.fetchInfo();
	} catch (final Exception e) {
		MessageDialog.openWarning(WorkbenchHelper.getShell(), "No file found",
				"The file'" + uri.toString() + "' cannot be found.");
		return null;
	}
	if (!info.exists()) {
		MessageDialog.openWarning(WorkbenchHelper.getShell(), "No file found",
				"The file'" + uri.toString() + "' cannot be found.");
	}
	return IDE.openInternalEditorOnFileStore(PAGE, fileStore);
}
 

protected void writeZip(IFileStore source, IPath path, ZipOutputStream zos) throws CoreException, IOException {

		/* load .cfignore if present */
		IFileStore cfIgnoreFile = source.getChild(CF_IGNORE_FILE);
		if (cfIgnoreFile.fetchInfo().exists()) {

			IgnoreNode node = new IgnoreNode();
			InputStream is = null;

			try {

				is = cfIgnoreFile.openInputStream(EFS.NONE, null);
				node.parse(is);

				cfIgnore.put(source.toURI(), node);

			} finally {
				if (is != null)
					is.close();
			}
		}

		IFileInfo info = source.fetchInfo(EFS.NONE, null);

		if (info.isDirectory()) {

			if (!isIgnored(source, path, true))
				for (IFileStore child : source.childStores(EFS.NONE, null))
					writeZip(child, path.append(child.getName()), zos);

		} else {

			if (!isIgnored(source, path, false)) {
				ZipEntry entry = new ZipEntry(path.toString());
				zos.putNextEntry(entry);
				IOUtilities.pipe(source.openInputStream(EFS.NONE, null), zos, true, false);
			}
		}
	}
 

public boolean validateLocation(final IFile resource) {
	if (!resource.isLinked()) { return true; }
	if (DEBUG.IS_ON()) {
		DEBUG.OUT("Validating link location of " + resource);
	}
	final boolean internal =
			ResourcesPlugin.getWorkspace().validateLinkLocation(resource, resource.getLocation()).isOK();
	if (!internal) { return false; }
	final IFileStore file = EFS.getLocalFileSystem().getStore(resource.getLocation());
	final IFileInfo info = file.fetchInfo();
	return info.exists();
}
 

/**
 * Returns a best guess URI based on the target string and an optional URI specifying from where the relative URI
 * should be run. If existingResource is null, then the root of the workspace is used as the relative URI
 *
 * @param target
 *            a String giving the path
 * @param existingResource
 *            the URI of the resource from which relative URIs should be interpreted
 * @author Alexis Drogoul, July 2018
 * @return an URI or null if it cannot be determined.
 */
public static URI getURI(final String target, final URI existingResource) {
	if (target == null) { return null; }
	try {
		final IPath path = Path.fromOSString(target);
		final IFileStore file = EFS.getLocalFileSystem().getStore(path);
		final IFileInfo info = file.fetchInfo();
		if (info.exists()) {
			// We have an absolute file
			final URI fileURI = URI.createFileURI(target);
			return fileURI;
		} else {
			final URI first = URI.createURI(target, false);
			URI root;
			if (!existingResource.isPlatformResource()) {
				root = URI.createPlatformResourceURI(existingResource.toString(), false);
			} else {
				root = existingResource;
			}
			if (root == null) {
				root = WORKSPACE_URI;
			}
			final URI iu = first.resolve(root);
			if (isFileExistingInWorkspace(iu)) { return iu; }
			return null;
		}
	} catch (final Exception e) {
		return null;
	}
}
 

private static String findOutsideWorkspace(final String fp, final URI modelBase, final boolean mustExist) {
	if (!mustExist) { return fp; }
	final IFileStore file = FILE_SYSTEM.getStore(new Path(fp));
	final IFileInfo info = file.fetchInfo();
	if (info.exists()) {
		final IFile linkedFile = createLinkToExternalFile(fp, modelBase);
		if (linkedFile == null) { return fp; }
		return linkedFile.getLocation().toFile().getAbsolutePath();
	}
	return null;
}
 

private IResource downloadFileTrace(IFileStore trace, IFolder traceFolder, IProgressMonitor monitor) throws CoreException, IOException, InterruptedException {

        IFolder folder = traceFolder;
        String traceName = trace.getName();

        traceName = TmfTraceCoreUtils.validateName(traceName);

        IResource resource = folder.findMember(traceName);
        if ((resource != null) && resource.exists()) {
            String newName = fConflictHandler.checkAndHandleNameClash(resource.getFullPath(), monitor);
            if (newName == null) {
                return null;
            }
            traceName = newName;
        }
        SubMonitor subMonitor = SubMonitor.convert(monitor, 1);
        subMonitor.beginTask(RemoteMessages.RemoteImportTracesOperation_DownloadTask, 1);

        IPath destination = folder.getLocation().addTrailingSeparator().append(traceName);
        IFileInfo info = trace.fetchInfo();
        subMonitor.setTaskName(RemoteMessages.RemoteImportTracesOperation_DownloadTask + ' ' + trace.getName() + '/' + trace.getName());
        try (InputStream in = trace.openInputStream(EFS.NONE, new NullProgressMonitor())) {
            copy(in, folder, destination, subMonitor, info.getLength());
        }
        folder.refreshLocal(IResource.DEPTH_INFINITE, null);
        return folder.findMember(traceName);
    }
 

@Override
public long getModificationStamp(Object element) {
	if (isWorkspaceExternalEditorInput(element)) {
		IFileStore fileStore = Adapters.adapt(element, IFileStore.class);
		if (fileStore != null) {
			IFileInfo info = fileStore.fetchInfo();
			if (info.exists()) {
				return info.getLastModified();
			}
		}
		return IDocumentExtension4.UNKNOWN_MODIFICATION_STAMP;
	} else {
		return super.getModificationStamp(element);
	}
}
 

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
	traceRequest(req);
	String pathInfo = req.getPathInfo();
	IPath path = pathInfo == null ? Path.ROOT : new Path(pathInfo);

	// prevent path canonicalization hacks
	if (pathInfo != null && !pathInfo.equals(path.toString())) {
		handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_FORBIDDEN, NLS.bind("Forbidden: {0}", pathInfo), null));
		return;
	}
	//don't allow anyone to mess with metadata
	if (path.segmentCount() > 0 && ".metadata".equals(path.segment(0))) { //$NON-NLS-1$
		handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_FORBIDDEN, NLS.bind("Forbidden: {0}", pathInfo), null));
		return;
	}
	IFileStore file = getFileStore(req, path);
	IFileStore testLink = file;
	while (testLink != null) {
		IFileInfo info = testLink.fetchInfo();
		if (info.getAttribute(EFS.ATTRIBUTE_SYMLINK)) {
			if (file == testLink) {
				handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_FORBIDDEN, NLS.bind("Forbidden: {0}", EncodingUtils.encodeForHTML(pathInfo.toString())), null));
			} else {
				handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, NLS.bind("File not found: {0}", EncodingUtils.encodeForHTML(pathInfo.toString())), null));
			}
			return;
		}
		testLink = testLink.getParent();
	}

	if (file == null) {
		handleException(resp, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, NLS.bind("File not found: {0}", EncodingUtils.encodeForHTML(pathInfo.toString())), null));
		return;
	}
	if (fileSerializer.handleRequest(req, resp, file))
		return;
	// finally invoke super to return an error for requests we don't know how to handle
	super.doGet(req, resp);
}
 

private void handlePutMetadata(BufferedReader reader, String boundary, IFileStore file) throws IOException, CoreException, JSONException {
	StringBuffer buf = new StringBuffer();
	String line;
	while ((line = reader.readLine()) != null && !line.equals(boundary))
		buf.append(line);
	// merge with existing metadata
	FileInfo info = (FileInfo) file.fetchInfo(EFS.NONE, null);
	ServletFileStoreHandler.copyJSONToFileInfo(new JSONObject(buf.toString()), info);
	file.putInfo(info, EFS.SET_ATTRIBUTES, null);
}
 

public IEditorInput createEditorInput( Object file )
{
	if (file instanceof File)
	{
		File handle = (File)file;
		String fileName = handle.getAbsolutePath( );
		
		IWorkspace space = ResourcesPlugin.getWorkspace( );
		IWorkspaceRoot root = space.getRoot( );
		try
		{
			//IFile[] resources = root.findFilesForLocationURI( new URL("file:///" + fileName ).toURI( ) ); //$NON-NLS-1$
			IFile[] resources = root.findFilesForLocationURI(new File( fileName ).toURI( ) ); //$NON-NLS-1$
			if (resources != null && resources.length > 0)
			{
				IEditorInput input = new FileEditorInput(resources[0]);
				return input;
			}
			else
			{
				IFileStore fileStore =  EFS.getLocalFileSystem().getStore(new Path(fileName));
				IFileInfo fetchInfo = fileStore.fetchInfo();
				if (!fetchInfo.isDirectory() && fetchInfo.exists())
				{
					return new FileStoreEditorInput(fileStore);
				}
			}
		}
		catch(Exception e)
		{
			return null;
		}
	}
	return null;
}
 

public static IFileStore getExternalFile(IPath path) {
    IFileStore fileStore = EFS.getLocalFileSystem().getStore(path);
    IFileInfo fileInfo = fileStore.fetchInfo();

    return fileInfo != null && fileInfo.exists() ? fileStore : null;
}
 

private IResource downloadDirectoryTrace(IFileStore trace, IFolder traceFolder, IProgressMonitor monitor) throws CoreException, IOException, InterruptedException {

        IFileStore[] sources = trace.childStores(EFS.NONE, monitor);

        // Don't import just the metadata file
        if (sources.length > 1) {
            String traceName = trace.getName();

            traceName = TmfTraceCoreUtils.validateName(traceName);

            IFolder folder = traceFolder.getFolder(traceName);
            String newName = fConflictHandler.checkAndHandleNameClash(folder.getFullPath(), monitor);
            if (newName == null) {
                return null;
            }

            folder = traceFolder.getFolder(newName);
            folder.create(true, true, null);

            SubMonitor subMonitor = SubMonitor.convert(monitor, sources.length);
            subMonitor.beginTask(RemoteMessages.RemoteImportTracesOperation_DownloadTask, sources.length);

            for (IFileStore source : sources) {
                if (subMonitor.isCanceled()) {
                    throw new InterruptedException();
                }

                IPath destination = folder.getLocation().addTrailingSeparator().append(source.getName());
                IFileInfo info = source.fetchInfo();
                // TODO allow for downloading index directory and files
                if (!info.isDirectory()) {
                    SubMonitor childMonitor = subMonitor.newChild(1);
                    childMonitor.setTaskName(RemoteMessages.RemoteImportTracesOperation_DownloadTask + ' ' + trace.getName() + '/' + source.getName());
                    try (InputStream in = source.openInputStream(EFS.NONE, new NullProgressMonitor())) {
                        copy(in, folder, destination, childMonitor, info.getLength());
                    }
                }
            }
            folder.refreshLocal(IResource.DEPTH_INFINITE, null);
            return folder;
        }
        return null;
    }
 

/**
 * Scan traceFolder for files that match the patterns specified in the
 * template file. When there is a match, the trace package element is used
 * to determine the trace name and trace type.
 *
 * @param traceGroup
 *                The parent trace group element
 * @param parentElement
 *                The immediate parent trace group or folder element
 * @param traceFolder
 *                The folder to scan
 * @param recursionLevel
 *                The recursion level (needed to find directory traces under the traceFolder
 * @param monitor
 *                The progress monitor
 * @throws CoreException
 *                Thrown by the file system implementation
 * @throws InterruptedException
 *                Thrown if operation was cancelled
 */
private void generateElementsFromArchive(
        final RemoteImportTraceGroupElement traceGroup,
        final TracePackageElement parentElement,
        final IFileStore traceFolder,
        final int recursionLevel,
        IProgressMonitor monitor)
                throws CoreException, InterruptedException {

    int localRecursionLevel = recursionLevel + 1;
    IFileStore[] sources = traceFolder.childStores(EFS.NONE, monitor);

    for (int i = 0; i < sources.length; i++) {
        ModalContext.checkCanceled(monitor);
        SubMonitor subMonitor = SubMonitor.convert(monitor, sources.length);

        IFileStore fileStore = sources[i];
        IPath fullArchivePath = TmfTraceCoreUtils.newSafePath(fileStore.toURI().getPath());

        IFileInfo sourceInfo = fileStore.fetchInfo();
        if (!sourceInfo.isDirectory()) {

            String rootPathString = traceGroup.getRootImportPath();
            IPath rootPath = TmfTraceCoreUtils.newSafePath(rootPathString);
            IPath relativeTracePath = Path.EMPTY;
            if (rootPath.isPrefixOf(fullArchivePath)) {
                relativeTracePath = fullArchivePath.makeRelativeTo(rootPath);
            }
            Entry<Pattern, TracePackageTraceElement> matchingTemplateEntry = getMatchingTemplateElement(relativeTracePath);
            if (matchingTemplateEntry != null) {
                TracePackageTraceElement matchingTemplateElement = matchingTemplateEntry.getValue();
                String traceType = matchingTemplateElement.getTraceType();

                // If a single file is part of a directory trace, use the parent directory instead
                TracePackageElement parent = parentElement;
                if (matchesDirectoryTrace(relativeTracePath, matchingTemplateEntry)) {
                    fullArchivePath = fullArchivePath.removeLastSegments(1);
                    fDirectoryTraces.add(fullArchivePath);
                    fileStore = fileStore.getParent();
                    sourceInfo = fileStore.fetchInfo();
                    parent = parentElement.getParent();
                    // Let the auto-detection choose the best trace type
                    traceType = null;
                } else if ((localRecursionLevel > 1) && (!traceGroup.isRecursive())) {
                    // Don't consider file traces on level 2 if it's not recursive
                    continue;
                }

                if (sourceInfo.getLength() > 0 || sourceInfo.isDirectory()) {
                    // Only add non-empty files
                    String traceName = fullArchivePath.lastSegment();
                    String fileName = fileStore.getName();
                    // create new elements to decouple from input elements
                    TracePackageTraceElement traceElement = new TracePackageTraceElement(parent, traceName, traceType);
                    RemoteImportTraceFilesElement tracePackageFilesElement = new RemoteImportTraceFilesElement(traceElement, fileName, fileStore);
                    tracePackageFilesElement.setVisible(false);
                }
            }
        } else {
            if (traceGroup.isRecursive() || localRecursionLevel < 2) {
                RemoteImportFolderElement folder = new RemoteImportFolderElement(parentElement, fileStore.getName());
                generateElementsFromArchive(traceGroup, folder, fileStore, localRecursionLevel, subMonitor);
            }
        }
    }
}
 

public static boolean isDirectoryOrNullExternalFile(final String path) {
	final IFileStore external = FILE_SYSTEM.getStore(new Path(path));
	final IFileInfo info = external.fetchInfo();
	if (info.isDirectory() || !info.exists()) { return true; }
	return false;
}
 

private void handleRequest(HttpRequest request, HttpResponse response, boolean head) throws HttpException,
		IOException, CoreException, URISyntaxException
{
	String target = URLDecoder.decode(request.getRequestLine().getUri(), IOUtil.UTF_8);
	URI uri = URIUtil.fromString(target);
	IFileStore fileStore = uriMapper.resolve(uri);
	IFileInfo fileInfo = fileStore.fetchInfo();
	if (fileInfo.isDirectory())
	{
		fileInfo = getIndex(fileStore);
		if (fileInfo.exists())
		{
			fileStore = fileStore.getChild(fileInfo.getName());
		}
	}
	if (!fileInfo.exists())
	{
		response.setStatusCode(HttpStatus.SC_NOT_FOUND);
		response.setEntity(createTextEntity(MessageFormat.format(
				Messages.LocalWebServerHttpRequestHandler_FILE_NOT_FOUND, uri.getPath())));
	}
	else if (fileInfo.isDirectory())
	{
		response.setStatusCode(HttpStatus.SC_FORBIDDEN);
		response.setEntity(createTextEntity(Messages.LocalWebServerHttpRequestHandler_FORBIDDEN));
	}
	else
	{
		response.setStatusCode(HttpStatus.SC_OK);
		if (head)
		{
			response.setEntity(null);
		}
		else
		{
			File file = fileStore.toLocalFile(EFS.NONE, new NullProgressMonitor());
			final File temporaryFile = (file == null) ? fileStore.toLocalFile(EFS.CACHE, new NullProgressMonitor())
					: null;
			response.setEntity(new NFileEntity((file != null) ? file : temporaryFile, getMimeType(fileStore
					.getName()))
			{
				@Override
				public void close() throws IOException
				{
					try
					{
						super.close();
					}
					finally
					{
						if (temporaryFile != null && !temporaryFile.delete())
						{
							temporaryFile.deleteOnExit();
						}
					}
				}
			});
		}
	}
}
 

/**
 * @param offset
 * @param valuePrefix
 * @param editorStoreURI
 *            The URI of the current file. We use this to eliminate it from list of possible completions.
 * @param parent
 *            The parent we're grabbing children for.
 * @return
 * @throws CoreException
 */
protected List<ICompletionProposal> suggestChildrenOfFileStore(int offset, String valuePrefix, URI editorStoreURI,
		IFileStore parent) throws CoreException
{
	IFileStore[] children = parent.childStores(EFS.NONE, new NullProgressMonitor());
	if (children == null || children.length == 0)
	{
		return Collections.emptyList();
	}

	List<ICompletionProposal> proposals = new ArrayList<ICompletionProposal>();
	Image[] userAgentIcons = this.getAllUserAgentIcons();
	for (IFileStore f : children)
	{
		String name = f.getName();
		// Don't include the current file in the list
		// FIXME this is a possible perf issue. We really only need to check for editor store on local URIs
		if (name.charAt(0) == '.' || f.toURI().equals(editorStoreURI))
		{
			continue;
		}
		if (valuePrefix != null && valuePrefix.length() > 0 && !name.startsWith(valuePrefix))
		{
			continue;
		}

		IFileInfo info = f.fetchInfo();
		boolean isDir = false;
		if (info.isDirectory())
		{
			isDir = true;
		}

		// build proposal
		int replaceOffset = offset;
		int replaceLength = 0;
		if (this._replaceRange != null)
		{
			replaceOffset = this._replaceRange.getStartingOffset();
			replaceLength = this._replaceRange.getLength();
		}

		CommonCompletionProposal proposal = new URIPathProposal(name, replaceOffset, replaceLength, isDir,
				userAgentIcons);
		proposals.add(proposal);
	}
	return proposals;
}
 

private boolean isUMLFile(IFileStore toCheck) {
    IFileInfo info = toCheck.fetchInfo();
    return info.exists() && !info.isDirectory() && toCheck.getName().endsWith('.' + UMLResource.FILE_EXTENSION);
}