proguard.resources.file.util.FilePoolNameFunction Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of proguard-core Show documentation

ProGuardCORE is a free library to read, analyze, modify, and write Java class files.

There is a newer version: 9.1.6

/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2022 Guardsquare NV
 *
 * 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 proguard.resources.file.util;

import proguard.resources.file.FilePool;
import proguard.resources.file.ResourceFile;
import proguard.util.StringFunction;

/**
 * This {@link StringFunction} maps resource file names on their (obfuscated) resource file name, as
 * present on the {@link ResourceFile} object in the given resource file pool.
 *
 * @author Johan Leys
 */
public class FilePoolNameFunction implements StringFunction {
  private final FilePool filePool;
  private final String defaultResourceFileName;

  /** Creates a new ResourceFileNameFunction based on the given resource file pool. */
  public FilePoolNameFunction(FilePool filePool) {
    this(filePool, null);
  }

  /**
   * Creates a new ResourceFileNameFunction based on the given resource file pool, with a default
   * string for resource files that are not in the resource file pool.
   */
  public FilePoolNameFunction(FilePool filePool, String defaultResourceFileName) {
    this.filePool = filePool;
    this.defaultResourceFileName = defaultResourceFileName;
  }

  // Implementations for StringFunction.

  @Override
  public String transform(String string) {
    ResourceFile resourceFile = filePool.getResourceFile(string);

    return resourceFile != null ? resourceFile.getFileName() : defaultResourceFileName;
  }
}