| /******************************************************************************* |
| * Copyright (c) 2005, 2017 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.core.internal.environment; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.URI; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.filesystem.EFS; |
| import org.eclipse.core.filesystem.IFileInfo; |
| import org.eclipse.core.filesystem.IFileStore; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.dltk.core.DLTKCore; |
| import org.eclipse.dltk.core.RuntimePerformanceMonitor; |
| import org.eclipse.dltk.core.RuntimePerformanceMonitor.PerformanceNode; |
| import org.eclipse.dltk.core.environment.EnvironmentPathUtils; |
| import org.eclipse.dltk.core.environment.FileHandles; |
| import org.eclipse.dltk.core.environment.IEnvironment; |
| import org.eclipse.dltk.core.environment.IFileHandle; |
| import org.eclipse.dltk.core.environment.IFileStoreProvider; |
| |
| public class EFSFileHandle implements IFileHandle, IFileStoreProvider { |
| |
| private static Map<String, Long> timestamps = new HashMap<>(); |
| private static Map<String, Long> lastaccess = new HashMap<>(); |
| |
| private IFileStore file; |
| private IEnvironment environment; |
| |
| public EFSFileHandle(IEnvironment env, IFileStore file) { |
| this.environment = env; |
| this.file = file; |
| } |
| |
| @Override |
| public boolean exists() { |
| try { |
| return file.fetchInfo().exists(); |
| } catch (RuntimeException e) { |
| return false; |
| } |
| } |
| |
| @Override |
| public String toOSString() { |
| return this.environment.convertPathToString(getPath()); |
| } |
| |
| @Override |
| public String getCanonicalPath() { |
| return this.environment.getCanonicalPath(getPath()); |
| } |
| |
| @Override |
| public IFileHandle getChild(final String childname) { |
| return new EFSFileHandle(environment, |
| file.getFileStore(new Path(childname))); |
| } |
| |
| @Override |
| public IFileHandle[] getChildren() { |
| try { |
| IFileStore[] files = file.childStores(EFS.NONE, null); |
| IFileHandle[] children = new IFileHandle[files.length]; |
| for (int i = 0; i < files.length; i++) |
| children[i] = new EFSFileHandle(environment, files[i]); |
| return children; |
| } catch (CoreException e) { |
| if (DLTKCore.DEBUG) |
| e.printStackTrace(); |
| return null; |
| } |
| } |
| |
| @Override |
| public IEnvironment getEnvironment() { |
| return environment; |
| } |
| |
| @Override |
| public URI toURI() { |
| return file.toURI(); |
| } |
| |
| @Override |
| public String getName() { |
| return file.getName(); |
| } |
| |
| @Override |
| public IFileHandle getParent() { |
| IFileStore parent = file.getParent(); |
| if (parent == null) |
| return null; |
| return new EFSFileHandle(environment, parent); |
| } |
| |
| @Override |
| public IPath getPath() { |
| // Try to get the path from the existing java.io.File object, which is |
| // twice faster than the file.toURI() |
| try { |
| File localFile = file.toLocalFile(EFS.NONE, null); |
| if (localFile != null) { |
| return new Path(localFile.getPath()); |
| } |
| } catch (CoreException e) { |
| } |
| return new Path(file.toURI().getPath()); |
| } |
| |
| @Override |
| public boolean isDirectory() { |
| return file.fetchInfo().isDirectory(); |
| } |
| |
| @Override |
| public boolean isFile() { |
| final IFileInfo info = file.fetchInfo(); |
| return info.exists() && !info.isDirectory(); |
| } |
| |
| @Override |
| public boolean isSymlink() { |
| return file.fetchInfo().getAttribute(EFS.ATTRIBUTE_SYMLINK); |
| } |
| |
| @Override |
| public InputStream openInputStream(IProgressMonitor monitor) |
| throws IOException { |
| try { |
| return file.openInputStream(EFS.NONE, monitor); |
| } catch (CoreException e) { |
| if (DLTKCore.DEBUG) |
| e.printStackTrace(); |
| throw new IOException(e.getLocalizedMessage()); |
| } |
| } |
| |
| @Override |
| public OutputStream openOutputStream(IProgressMonitor monitor) |
| throws IOException { |
| try { |
| return file.openOutputStream(EFS.NONE, monitor); |
| } catch (CoreException e) { |
| if (DLTKCore.DEBUG) |
| e.printStackTrace(); |
| throw new IOException(e.getLocalizedMessage()); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof EFSFileHandle) { |
| EFSFileHandle anotherFile = (EFSFileHandle) obj; |
| return this.file.equals(anotherFile.file); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return file.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| return toOSString(); |
| } |
| |
| @Override |
| public long lastModified() { |
| String n = toString(); |
| long c = 0; |
| boolean flag = !environment.isLocal(); |
| if (flag) { |
| if (timestamps.containsKey(n)) { |
| c = System.currentTimeMillis(); |
| Long last = lastaccess.get(n); |
| if (last != null |
| && (c - last.longValue()) < 1000 * 60 * 60 * 24) { |
| return timestamps.get(n); |
| } |
| } |
| } |
| PerformanceNode p = RuntimePerformanceMonitor.begin(); |
| long lm = file.fetchInfo().getLastModified(); |
| if (flag) { |
| timestamps.put(n, lm); |
| if (c == 0) { |
| c = System.currentTimeMillis(); |
| } |
| lastaccess.put(n, c); |
| } |
| p.done("#", "Return file timestamp", 0); |
| return lm; |
| |
| } |
| |
| // public long lastModifiedFromCache() { |
| // if (this.environment.isLocal()) { |
| // return file.fetchInfo().getLastModified(); |
| // } |
| // // Try to restore timestamp from local cache. |
| // IContentCache coreCache = ModelManager.getModelManager().getCoreCache(); |
| // File asFile = coreCache.getEntryAsFile(this, "timestamp"); |
| // if (asFile.exists()) { |
| // try { |
| // DataInputStream dis = new DataInputStream(new FileInputStream( |
| // asFile)); |
| // long timestamp = dis.readLong(); |
| // dis.close(); |
| // return timestamp; |
| // } catch (IOException e) { |
| // } |
| // } |
| // long lastModified = file.fetchInfo().getLastModified(); |
| // coreCache.setCacheEntryAttribute(this, "timestamp", lastModified); |
| // return lastModified; |
| // } |
| |
| @Override |
| public long length() { |
| return file.fetchInfo().getLength(); |
| } |
| |
| @Override |
| public IPath getFullPath() { |
| return EnvironmentPathUtils.getFullPath(environment, getPath()); |
| } |
| |
| @Override |
| public String getEnvironmentId() { |
| return environment.getId(); |
| } |
| |
| /** |
| * @since 2.0 |
| */ |
| @Override |
| public IFileStore getFileStore() { |
| return this.file; |
| } |
| |
| @Override |
| public void move(IFileHandle destination) throws CoreException { |
| final IFileStore destStore = FileHandles.asFileStore(destination); |
| file.move(destStore, EFS.OVERWRITE, null); |
| } |
| } |