| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.openapi.vcs.vfs; |
| |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.progress.ProcessCanceledException; |
| import com.intellij.openapi.ui.Messages; |
| import com.intellij.openapi.vcs.VcsBundle; |
| import com.intellij.openapi.vcs.VcsException; |
| import com.intellij.openapi.vcs.history.ShortVcsRevisionNumber; |
| import com.intellij.openapi.vcs.history.VcsFileRevision; |
| import com.intellij.openapi.vcs.history.VcsRevisionNumber; |
| import com.intellij.openapi.vfs.CharsetToolkit; |
| import com.intellij.openapi.vfs.VirtualFileSystem; |
| import com.intellij.util.ArrayUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.io.IOException; |
| import java.nio.charset.Charset; |
| |
| /** |
| * author: lesya |
| */ |
| public class VcsVirtualFile extends AbstractVcsVirtualFile { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.vcs.vfs.VcsVirtualFile"); |
| |
| private byte[] myContent; |
| private final VcsFileRevision myFileRevision; |
| private boolean myContentLoadFailed = false; |
| private Charset myCharset; |
| |
| public VcsVirtualFile(String path, |
| VcsFileRevision revision, VirtualFileSystem fileSystem) { |
| super(path, fileSystem); |
| myFileRevision = revision; |
| } |
| |
| public VcsVirtualFile(String path, |
| byte[] content, |
| String revision, VirtualFileSystem fileSystem) { |
| this(path, null, fileSystem); |
| myContent = content; |
| setRevision(revision); |
| } |
| |
| @NotNull |
| public byte[] contentsToByteArray() throws IOException { |
| if (myContentLoadFailed || myProcessingBeforeContentsChange) { |
| return ArrayUtil.EMPTY_BYTE_ARRAY; |
| } |
| if (myContent == null) { |
| loadContent(); |
| } |
| return myContent; |
| } |
| |
| private void loadContent() throws IOException { |
| if (myContent != null) return; |
| |
| final VcsFileSystem vcsFileSystem = ((VcsFileSystem)getFileSystem()); |
| |
| try { |
| myFileRevision.loadContent(); |
| fireBeforeContentsChange(); |
| |
| myModificationStamp++; |
| final VcsRevisionNumber revisionNumber = myFileRevision.getRevisionNumber(); |
| if (revisionNumber instanceof ShortVcsRevisionNumber) { |
| setRevision(((ShortVcsRevisionNumber) revisionNumber).toShortString()); |
| } |
| else { |
| setRevision(revisionNumber.asString()); |
| } |
| myContent = myFileRevision.getContent(); |
| myCharset = new CharsetToolkit(myContent).guessEncoding(myContent.length); |
| ApplicationManager.getApplication().runWriteAction(new Runnable() { |
| public void run() { |
| vcsFileSystem.fireContentsChanged(this, VcsVirtualFile.this, 0); |
| } |
| }); |
| |
| } |
| catch (VcsException e) { |
| myContentLoadFailed = true; |
| ApplicationManager.getApplication().runWriteAction(new Runnable() { |
| public void run() { |
| vcsFileSystem.fireBeforeFileDeletion(this, VcsVirtualFile.this); |
| } |
| }); |
| myContent = ArrayUtil.EMPTY_BYTE_ARRAY; |
| setRevision("0"); |
| |
| Messages.showMessageDialog( |
| VcsBundle.message("message.text.could.not.load.virtual.file.content", getPresentableUrl(), e.getLocalizedMessage()), |
| VcsBundle.message("message.title.could.not.load.content"), |
| Messages.getInformationIcon()); |
| |
| ApplicationManager.getApplication().runWriteAction(new Runnable() { |
| public void run() { |
| vcsFileSystem.fireFileDeleted(this, VcsVirtualFile.this, getName(), getParent()); |
| } |
| }); |
| |
| } |
| catch (ProcessCanceledException ex) { |
| myContent = null; |
| } |
| |
| } |
| |
| @Override |
| public Charset getCharset() { |
| if (myCharset != null) return myCharset; |
| return super.getCharset(); |
| } |
| |
| public boolean isDirectory() { |
| return false; |
| } |
| |
| public String getRevision() { |
| if (myRevision == null) { |
| try { |
| loadContent(); |
| } |
| catch (IOException e) { |
| LOG.info(e); |
| } |
| } |
| return myRevision; |
| } |
| } |