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/*
* This file is part of fabric-loom, licensed under the MIT License (MIT).
*
* Copyright (c) 2016-2020 FabricMC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.fabricmc.loom.util;
import java.io.File;
import java.io.IOException;
import java.io.UncheckedIOException;
import com.google.common.hash.HashCode;
import com.google.common.hash.Hashing;
import com.google.common.io.Files;
import org.gradle.api.logging.Logger;
import org.gradle.api.logging.Logging;
public class Checksum {
private static final Logger log = Logging.getLogger(Checksum.class);
public static boolean equals(File file, String checksum) {
if (file == null || !file.exists()) {
return false;
}
try {
HashCode hash = Files.asByteSource(file).hash(Hashing.sha1());
log.debug("Checksum check: '" + hash.toString() + "' == '" + checksum + "'?");
return hash.toString().equals(checksum);
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
public static byte[] sha256(File file) {
try {
HashCode hash = Files.asByteSource(file).hash(Hashing.sha256());
return hash.asBytes();
} catch (IOException e) {
throw new RuntimeException("Failed to get file hash");
}
}
public static String truncatedSha256(File file) {
try {
HashCode hash = Files.asByteSource(file).hash(Hashing.sha256());
return hash.toString().substring(0, 12);
} catch (IOException e) {
throw new UncheckedIOException("Failed to get file hash of " + file, e);
}
}
}
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