| /* |
| * 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.changes.patch; |
| |
| import com.intellij.openapi.diff.impl.patch.TextFilePatch; |
| import com.intellij.openapi.diff.impl.patch.apply.GenericPatchApplier; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.fileEditor.FileDocumentManager; |
| import com.intellij.openapi.vcs.FilePath; |
| import com.intellij.openapi.vcs.changes.ContentRevision; |
| import com.intellij.openapi.vcs.history.VcsRevisionNumber; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class LazyPatchContentRevision implements ContentRevision { |
| private volatile String myContent; |
| private final VirtualFile myVf; |
| private final FilePath myNewFilePath; |
| private final String myRevision; |
| private final TextFilePatch myPatch; |
| private volatile boolean myPatchApplyFailed; |
| |
| public LazyPatchContentRevision(final VirtualFile vf, final FilePath newFilePath, final String revision, final TextFilePatch patch) { |
| myVf = vf; |
| myNewFilePath = newFilePath; |
| myRevision = revision; |
| myPatch = patch; |
| } |
| |
| public String getContent() { |
| if (myContent == null) { |
| final Document doc = FileDocumentManager.getInstance().getDocument(myVf); |
| if (doc == null) { |
| myPatchApplyFailed = true; |
| return null; |
| } |
| final String localContext = doc.getText(); |
| |
| final GenericPatchApplier applier = new GenericPatchApplier(localContext, myPatch.getHunks()); |
| if (applier.execute()) { |
| myContent = applier.getAfter(); |
| } else { |
| myPatchApplyFailed = true; |
| } |
| } |
| return myContent; |
| } |
| |
| public boolean isPatchApplyFailed() { |
| return myPatchApplyFailed; |
| } |
| |
| @NotNull |
| public FilePath getFile() { |
| return myNewFilePath; |
| } |
| |
| @NotNull |
| public VcsRevisionNumber getRevisionNumber() { |
| return new VcsRevisionNumber() { |
| public String asString() { |
| return myRevision; |
| } |
| |
| public int compareTo(final VcsRevisionNumber o) { |
| return 0; |
| } |
| }; |
| } |
| } |