52 lines
2.0 KiB
Java
52 lines
2.0 KiB
Java
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/*
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* This file is part of fabric-loom, licensed under the MIT License (MIT).
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*
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* Copyright (c) 2016 FabricMC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package net.fabricmc.loom.util;
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import com.google.common.hash.HashCode;
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import com.google.common.hash.Hashing;
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import com.google.common.io.Files;
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import java.io.File;
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import java.io.IOException;
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public class Checksum {
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public static boolean equals(File file, String checksum) {
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if (file == null) {
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return false;
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}
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try {
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HashCode hash = Files.hash(file, Hashing.sha1());
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StringBuilder builder = new StringBuilder();
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for (Byte hashBytes : hash.asBytes()) {
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builder.append(Integer.toString((hashBytes & 0xFF) + 0x100, 16).substring(1));
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}
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return builder.toString().equals(checksum);
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} catch (IOException e) {
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e.printStackTrace();
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}
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return false;
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}
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}
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