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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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 android.app.backup;
import android.app.backup.FullBackup.BackupScheme.PathWithRequiredFlags;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
/** @hide */
public class BackupUtils {
private BackupUtils() {}
/**
* Returns {@code true} if {@code file} is either directly in {@code canonicalPathList} or is a
* file contained in a directory in the list.
*/
public static boolean isFileSpecifiedInPathList(
File file, Collection<PathWithRequiredFlags> canonicalPathList) throws IOException {
for (PathWithRequiredFlags canonical : canonicalPathList) {
String canonicalPath = canonical.getPath();
File fileFromList = new File(canonicalPath);
if (fileFromList.isDirectory()) {
if (file.isDirectory()) {
// If they are both directories check exact equals.
if (file.equals(fileFromList)) {
return true;
}
} else {
// O/w we have to check if the file is within the directory from the list.
if (file.toPath().startsWith(canonicalPath)) {
return true;
}
}
} else if (file.equals(fileFromList)) {
// Need to check the explicit "equals" so we don't end up with substrings.
return true;
}
}
return false;
}
}
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