ToBomStringFunction.java
/**
* Copyright 1&1 Internet AG, https://github.com/1and1/
*
* 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 net.oneandone.maven.plugins.billofmaterials;
import com.google.common.base.Function;
import com.google.common.hash.HashCode;
import com.google.common.hash.HashFunction;
import com.google.common.io.Files;
import java.io.File;
import java.io.IOException;
/**
* Creates a hashsum check for a single artifact.
* @author Mirko Friedenhagen
*/
final class ToBomStringFunction implements Function<File, String> {
/**
* SHA1 algorithm.
*/
private final HashFunction hashFunction;
/**
* @param hashFunction to use.
*/
ToBomStringFunction(HashFunction hashFunction) {
this.hashFunction = hashFunction;
}
@Override
public String apply(final File file) {
final HashCode hash;
try {
hash = Files.hash(file, hashFunction);
} catch (IOException e) {
throw new IllegalArgumentException("Could not create hash for " + file, e);
}
return hash + " " + file.getName();
}
}