blob: dcba28ba820b147cb3505a861dcf2a2420702856 [file] [log] [blame]
// Copyright 2014 The Bazel Authors. All rights reserved.
//
// 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.google.devtools.build.lib.vfs;
import com.google.common.base.Preconditions;
import java.io.IOException;
import javax.annotation.Nullable;
/** An adapter from FileStatus to FileStatusWithDigest. */
public class FileStatusWithDigestAdapter implements FileStatusWithDigest {
private final FileStatus stat;
@Nullable
public static FileStatusWithDigest maybeAdapt(@Nullable FileStatus stat) {
return stat == null
? null
: (stat instanceof FileStatusWithDigest)
? (FileStatusWithDigest) stat
: new FileStatusWithDigestAdapter(stat);
}
private FileStatusWithDigestAdapter(FileStatus stat) {
this.stat = Preconditions.checkNotNull(stat);
}
@Nullable
@Override
public byte[] getDigest() {
return null;
}
@Override
public boolean isFile() {
return stat.isFile();
}
@Override
public boolean isSpecialFile() {
return stat.isSpecialFile();
}
@Override
public boolean isDirectory() {
return stat.isDirectory();
}
@Override
public boolean isSymbolicLink() {
return stat.isSymbolicLink();
}
@Override
public long getSize() throws IOException {
return stat.getSize();
}
@Override
public long getLastModifiedTime() throws IOException {
return stat.getLastModifiedTime();
}
@Override
public long getLastChangeTime() throws IOException {
return stat.getLastChangeTime();
}
@Override
public long getNodeId() throws IOException {
return stat.getNodeId();
}
}