mirror of
https://github.com/GeyserMC/Geyser.git
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95d65350e4
Co-authored-by: Konicai <71294714+Konicai@users.noreply.github.com>
242 lines
8.8 KiB
Java
242 lines
8.8 KiB
Java
/*
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* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
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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
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* all 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
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.geyser.util;
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import com.fasterxml.jackson.annotation.JsonSetter;
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import com.fasterxml.jackson.annotation.Nulls;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
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import org.geysermc.geyser.GeyserBootstrap;
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import org.geysermc.geyser.GeyserImpl;
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import java.io.*;
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import java.lang.annotation.Annotation;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.security.MessageDigest;
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import java.util.Set;
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import java.util.function.Function;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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public class FileUtils {
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/**
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* Load the given YAML file into the given class
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*
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* @param src File to load
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* @param valueType Class to load file into
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* @param <T> the type
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* @return The data as the given class
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* @throws IOException if the config could not be loaded
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*/
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public static <T> T loadConfig(File src, Class<T> valueType) throws IOException {
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ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory())
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.setDefaultSetterInfo(JsonSetter.Value.forValueNulls(Nulls.AS_EMPTY));
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return objectMapper.readValue(src, valueType);
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}
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public static <T> T loadJson(InputStream src, Class<T> valueType) throws IOException {
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// Read specifically with UTF-8 to allow any non-UTF-encoded JSON to read
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return GeyserImpl.JSON_MAPPER.readValue(new InputStreamReader(src, StandardCharsets.UTF_8), valueType);
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}
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/**
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* Open the specified file or copy if from resources
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*
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* @param file File to open
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* @param name Name of the resource get if needed
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* @param format Formatting callback
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* @return File handle of the specified file
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* @throws IOException if the file failed to copy from resource
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*/
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public static File fileOrCopiedFromResource(File file, String name, Function<String, String> format, GeyserBootstrap bootstrap) throws IOException {
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if (!file.exists()) {
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//noinspection ResultOfMethodCallIgnored
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file.createNewFile();
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try (FileOutputStream fos = new FileOutputStream(file)) {
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try (InputStream input = bootstrap.getResourceOrThrow(name)) {
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byte[] bytes = new byte[input.available()];
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//noinspection ResultOfMethodCallIgnored
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input.read(bytes);
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for(char c : format.apply(new String(bytes)).toCharArray()) {
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fos.write(c);
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}
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fos.flush();
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}
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}
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}
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return file;
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}
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/**
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* Writes the given data to the specified file on disk
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*
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* @param file File to write to
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* @param data Data to write to the file
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* @throws IOException if the file failed to write
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*/
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public static void writeFile(File file, char[] data) throws IOException {
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if (!file.exists()) {
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file.createNewFile();
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}
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try (FileOutputStream fos = new FileOutputStream(file)) {
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for (char c : data) {
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fos.write(c);
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}
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fos.flush();
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}
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}
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/**
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* Writes the given data to the specified file on disk
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*
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* @param name File path to write to
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* @param data Data to write to the file
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* @throws IOException if the file failed to write
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*/
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public static void writeFile(String name, char[] data) throws IOException {
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writeFile(new File(name), data);
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}
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/**
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* Calculate the SHA256 hash of a file
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*
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* @param path Path to calculate the hash for
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* @return A byte[] representation of the hash
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*/
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public static byte[] calculateSHA256(Path path) {
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byte[] sha256;
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try {
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sha256 = MessageDigest.getInstance("SHA-256").digest(Files.readAllBytes(path));
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} catch (Exception e) {
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throw new RuntimeException("Could not calculate pack hash", e);
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}
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return sha256;
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}
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/**
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* Calculate the SHA1 hash of a file
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*
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* @param path Path to calculate the hash for
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* @return A byte[] representation of the hash
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*/
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public static byte[] calculateSHA1(Path path) {
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byte[] sha1;
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try {
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sha1 = MessageDigest.getInstance("SHA-1").digest(Files.readAllBytes(path));
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} catch (Exception e) {
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throw new RuntimeException("Could not calculate pack hash", e);
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}
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return sha1;
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}
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/**
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* @param resource the internal resource to read off from
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* @return the byte array of an InputStream
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*/
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public static byte[] readAllBytes(String resource) {
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try (InputStream stream = GeyserImpl.getInstance().getBootstrap().getResourceOrThrow(resource)) {
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return stream.readAllBytes();
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} catch (IOException e) {
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throw new RuntimeException("Error while trying to read internal input stream!", e);
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}
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}
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/**
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* @param resource the internal resource to read off from
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*
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* @return the contents decoded as a UTF-8 String
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*/
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public static String readToString(String resource) {
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return new String(readAllBytes(resource), StandardCharsets.UTF_8);
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}
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/**
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* Read the lines of a file and return it as a stream
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*
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* @param path File path to read
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* @return The lines as a stream
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*/
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public static Stream<String> readAllLines(Path path) {
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try {
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return new BufferedReader(new InputStreamReader(Files.newInputStream(path))).lines();
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} catch (IOException e) {
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throw new RuntimeException("Error while trying to read file!", e);
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}
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}
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/**
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* Returns a set of all the classes that are annotated by a given annotation.
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* Keep in mind that these are from a set of generated annotations generated
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* at compile time by the annotation processor, meaning that arbitrary annotations
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* cannot be passed into this method and expected to have a set of classes
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* returned back.
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*
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* @param annotationClass the annotation class
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* @return a set of all the classes annotated by the given annotation
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*/
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public static Set<Class<?>> getGeneratedClassesForAnnotation(Class<? extends Annotation> annotationClass) {
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return getGeneratedClassesForAnnotation(annotationClass.getName());
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}
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/**
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* Returns a set of all the classes that are annotated by a given annotation.
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* Keep in mind that these are from a set of generated annotations generated
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* at compile time by the annotation processor, meaning that arbitrary annotations
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* cannot be passed into this method and expected to have a set of classes
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* returned back.
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*
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* @param input the fully qualified name of the annotation
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* @return a set of all the classes annotated by the given annotation
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*/
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public static Set<Class<?>> getGeneratedClassesForAnnotation(String input) {
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try (InputStream annotatedClass = GeyserImpl.getInstance().getBootstrap().getResourceOrThrow(input);
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BufferedReader reader = new BufferedReader(new InputStreamReader(annotatedClass))) {
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return reader.lines().map(className -> {
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try {
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return Class.forName(className);
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} catch (ClassNotFoundException ex) {
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GeyserImpl.getInstance().getLogger().error("Failed to find class " + className, ex);
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throw new RuntimeException(ex);
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}
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}).collect(Collectors.toSet());
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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