org.argeo.slc.core/src/org/argeo/slc/core/deploy/DigestCheck.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.core.deploy;
  17
  18 import java.io.File;
  19 import java.io.IOException;
  20
  21 import org.argeo.slc.SlcException;
  22 import org.argeo.util.security.DigestUtils;
  23 import org.springframework.core.io.Resource;
  24
  25 /** Add Spring capabilities to {@link DigestUtils} */
  26 public class DigestCheck extends DigestUtils {
  27         public static String digest(String algorithm, Resource resource) {
  28                 try {
  29                         File file = resource.getFile();
  30                         return digest(algorithm, file);
  31                 } catch (IOException e) {
  32                         try {
  33                                 return digest(algorithm, resource.getInputStream());
  34                         } catch (IOException e1) {
  35                                 throw new SlcException("Cannot digest " + resource
  36                                                 + " with algorithm " + algorithm, e);
  37                         }
  38                 }
  39         }
  40 }