2 * Copyright 2000-2009 JetBrains s.r.o.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package com
.intellij
.openapi
.vcs
.changes
;
18 import org
.jetbrains
.annotations
.Nullable
;
19 import org
.jetbrains
.annotations
.NotNull
;
20 import com
.intellij
.openapi
.vcs
.VcsException
;
21 import com
.intellij
.openapi
.vcs
.FilePath
;
22 import com
.intellij
.openapi
.vcs
.FilePathImpl
;
23 import com
.intellij
.openapi
.vcs
.diff
.DiffProvider
;
24 import com
.intellij
.openapi
.vcs
.history
.VcsRevisionNumber
;
25 import com
.intellij
.openapi
.vfs
.VirtualFile
;
30 public class VcsCurrentRevisionProxy
implements ContentRevision
{
31 private final DiffProvider myDiffProvider
;
32 private final VirtualFile myFile
;
33 private ContentRevision myVcsRevision
;
35 public VcsCurrentRevisionProxy(final DiffProvider diffProvider
, final VirtualFile file
) {
36 myDiffProvider
= diffProvider
;
41 public String
getContent() throws VcsException
{
42 return getVcsRevision().getContent();
46 public FilePath
getFile() {
47 return new FilePathImpl(myFile
);
51 public VcsRevisionNumber
getRevisionNumber() {
53 return getVcsRevision().getRevisionNumber();
55 catch(VcsException ex
) {
56 return VcsRevisionNumber
.NULL
;
60 private ContentRevision
getVcsRevision() throws VcsException
{
61 if (myVcsRevision
== null) {
62 final VcsRevisionNumber currentRevision
= myDiffProvider
.getCurrentRevision(myFile
);
63 if (currentRevision
== null) {
64 throw new VcsException("Failed to fetch current revision");
66 myVcsRevision
= myDiffProvider
.createFileContent(currentRevision
, myFile
);
67 if (myVcsRevision
== null) {
68 throw new VcsException("Failed to create content for current revision");