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// Copyright (C) 2021 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 com.google.gerrit.server.patch;

import com.google.gerrit.common.Nullable;
import com.google.gerrit.entities.Patch.ChangeType;
import java.util.Optional;

/**
 * Adapter for old/new paths of the new diff cache to the old diff cache representation. This is
 * needed for backward compatibility with all old diff cache callers.
 *
 * 

TODO(ghareeb): It's better to revisit this logic and update all diff cache callers to use the * new diff cache output directly. */ public class FilePathAdapter { private FilePathAdapter() {} /** * Converts the old file path of the new diff cache output to the old diff cache representation. */ @Nullable public static String getOldPath(Optional oldName, ChangeType changeType) { switch (changeType) { case DELETED: case ADDED: case MODIFIED: return null; case COPIED: case RENAMED: return oldName.get(); case REWRITE: return oldName.isPresent() ? oldName.get() : null; default: throw new IllegalArgumentException("Unsupported type " + changeType); } } /** * Converts the new file path of the new diff cache output to the old diff cache representation. */ public static String getNewPath( Optional oldName, Optional newName, ChangeType changeType) { switch (changeType) { case DELETED: return oldName.get(); case ADDED: case MODIFIED: case REWRITE: case COPIED: case RENAMED: return newName.get(); default: throw new IllegalArgumentException("Unsupported type " + changeType); } } }





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