| package org.apache.archiva.checksum; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import java.io.File; |
| |
| import org.apache.commons.io.FilenameUtils; |
| |
| /** |
| * Enumeration of available ChecksumAlgorithm techniques. |
| * |
| * |
| */ |
| public enum ChecksumAlgorithm { |
| SHA1("SHA-1", "sha1", "SHA1"), |
| MD5("MD5", "md5", "MD5"); |
| |
| public static ChecksumAlgorithm getByExtension( File file ) |
| { |
| String ext = FilenameUtils.getExtension( file.getName() ).toLowerCase(); |
| if ( ChecksumAlgorithm.SHA1.getExt().equals( ext ) ) |
| { |
| return ChecksumAlgorithm.SHA1; |
| } |
| else if ( ChecksumAlgorithm.MD5.getExt().equals( ext ) ) |
| { |
| return ChecksumAlgorithm.MD5; |
| } |
| |
| throw new IllegalArgumentException( "Filename " + file.getName() + " has no associated extension." ); |
| } |
| |
| /** |
| * The MessageDigest algorithm for this hash. |
| */ |
| private final String algorithm; |
| |
| /** |
| * The file extension for this ChecksumAlgorithm. |
| */ |
| private final String ext; |
| |
| /** |
| * The checksum type, the key that you see in checksum files. |
| */ |
| private final String type; |
| |
| /** |
| * Construct a ChecksumAlgorithm |
| * |
| * @param algorithm the MessageDigest algorithm |
| * @param ext the file extension. |
| * @param type the checksum type. |
| */ |
| private ChecksumAlgorithm( String algorithm, String ext, String type ) |
| { |
| this.algorithm = algorithm; |
| this.ext = ext; |
| this.type = type; |
| } |
| |
| public String getAlgorithm() |
| { |
| return algorithm; |
| } |
| |
| public String getExt() |
| { |
| return ext; |
| } |
| |
| public String getType() |
| { |
| return type; |
| } |
| |
| |
| } |