253 lines
10 KiB
Java
253 lines
10 KiB
Java
/*
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* This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion
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* Copyright (C) 2016-2023 ViaVersion and contributors
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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 com.viaversion.viaversion.api.data;
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import com.google.gson.JsonArray;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonIOException;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonSyntaxException;
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import com.viaversion.viaversion.api.Via;
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import com.viaversion.viaversion.util.GsonUtil;
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import com.viaversion.viaversion.util.Int2IntBiMap;
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import it.unimi.dsi.fastutil.objects.Object2IntMap;
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import it.unimi.dsi.fastutil.objects.Object2IntOpenHashMap;
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import org.checkerframework.checker.nullness.qual.Nullable;
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import java.io.File;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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public class MappingDataLoader {
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private static final Map<String, JsonObject> MAPPINGS_CACHE = new ConcurrentHashMap<>();
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private static boolean cacheJsonMappings;
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/**
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* Returns true if a selected number of mappings should be cached.
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* If enabled, cleanup should be done after the cache is no longer needed.
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*
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* @return true if mappings should be cached
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*/
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public static boolean isCacheJsonMappings() {
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return cacheJsonMappings;
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}
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public static void enableMappingsCache() {
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cacheJsonMappings = true;
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}
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/**
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* Returns the cached mappings. Cleared after ViaVersion has been fully loaded.
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*
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* @return cached mapping file json objects
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* @see #isCacheJsonMappings()
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*/
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public static Map<String, JsonObject> getMappingsCache() {
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return MAPPINGS_CACHE;
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}
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/**
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* Loads the file from the plugin folder if present, else from the bundled resources.
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*
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* @return loaded json object, or null if not found or invalid
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*/
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public static @Nullable JsonObject loadFromDataDir(String name) {
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File file = new File(Via.getPlatform().getDataFolder(), name);
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if (!file.exists()) return loadData(name);
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// Load the file from the platform's directory if present
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try (FileReader reader = new FileReader(file)) {
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return GsonUtil.getGson().fromJson(reader, JsonObject.class);
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} catch (JsonSyntaxException e) {
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// Users might mess up the format, so let's catch the syntax error
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Via.getPlatform().getLogger().warning(name + " is badly formatted!");
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e.printStackTrace();
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} catch (IOException | JsonIOException e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* Loads the file from the bundled resources. Uses the cache if enabled.
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*
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* @return loaded json object from bundled resources if present
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*/
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public static @Nullable JsonObject loadData(String name) {
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return loadData(name, false);
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}
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/**
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* Loads the file from the bundled resources. Uses the cache if enabled.
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*
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* @param cacheIfEnabled whether loaded files should be cached
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* @return loaded json object from bundled resources if present
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*/
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public static @Nullable JsonObject loadData(String name, boolean cacheIfEnabled) {
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if (cacheJsonMappings) {
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JsonObject cached = MAPPINGS_CACHE.get(name);
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if (cached != null) {
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return cached;
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}
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}
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InputStream stream = getResource(name);
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if (stream == null) return null;
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InputStreamReader reader = new InputStreamReader(stream);
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try {
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JsonObject object = GsonUtil.getGson().fromJson(reader, JsonObject.class);
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if (cacheIfEnabled && cacheJsonMappings) {
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MAPPINGS_CACHE.put(name, object);
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}
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return object;
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} finally {
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try {
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reader.close();
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} catch (IOException ignored) {
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// Ignored
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}
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}
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}
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public static void mapIdentifiers(Int2IntBiMap output, JsonObject oldIdentifiers, JsonObject newIdentifiers, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
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Object2IntMap<String> newIdentifierMap = MappingDataLoader.indexedObjectToMap(newIdentifiers);
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for (Map.Entry<String, JsonElement> entry : oldIdentifiers.entrySet()) {
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int value = mapIdentifierEntry(entry, newIdentifierMap, diffIdentifiers, warnOnMissing);
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if (value != -1) {
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output.put(Integer.parseInt(entry.getKey()), value);
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}
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}
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}
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@Deprecated/*(forRemoval = true)*/
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public static void mapIdentifiers(int[] output, JsonObject oldIdentifiers, JsonObject newIdentifiers) {
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mapIdentifiers(output, oldIdentifiers, newIdentifiers, null);
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}
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public static void mapIdentifiers(int[] output, JsonObject oldIdentifiers, JsonObject newIdentifiers, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
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Object2IntMap<String> newIdentifierMap = MappingDataLoader.indexedObjectToMap(newIdentifiers);
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for (Map.Entry<String, JsonElement> entry : oldIdentifiers.entrySet()) {
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int value = mapIdentifierEntry(entry, newIdentifierMap, diffIdentifiers, warnOnMissing);
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if (value != -1) {
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output[Integer.parseInt(entry.getKey())] = value;
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}
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}
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}
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public static void mapIdentifiers(int[] output, JsonObject oldIdentifiers, JsonObject newIdentifiers, @Nullable JsonObject diffIdentifiers) {
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mapIdentifiers(output, oldIdentifiers, newIdentifiers, diffIdentifiers, true);
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}
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private static int mapIdentifierEntry(Map.Entry<String, JsonElement> entry, Object2IntMap<String> newIdentifierMap, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
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int value = newIdentifierMap.getInt(entry.getValue().getAsString());
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if (value == -1) {
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// Search in diff mappings
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if (diffIdentifiers != null) {
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JsonElement diffElement = diffIdentifiers.get(entry.getKey());
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if (diffElement != null) {
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value = newIdentifierMap.getInt(diffElement.getAsString());
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}
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}
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if (value == -1) {
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if (warnOnMissing && !Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
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Via.getPlatform().getLogger().warning("No key for " + entry.getValue() + " :( ");
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}
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return -1;
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}
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}
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return value;
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}
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@Deprecated/*(forRemoval = true)*/
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public static void mapIdentifiers(int[] output, JsonArray oldIdentifiers, JsonArray newIdentifiers, boolean warnOnMissing) {
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mapIdentifiers(output, oldIdentifiers, newIdentifiers, null, warnOnMissing);
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}
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public static void mapIdentifiers(int[] output, JsonArray oldIdentifiers, JsonArray newIdentifiers, @Nullable JsonObject diffIdentifiers, boolean warnOnMissing) {
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Object2IntMap<String> newIdentifierMap = MappingDataLoader.arrayToMap(newIdentifiers);
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for (int i = 0; i < oldIdentifiers.size(); i++) {
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JsonElement oldIdentifier = oldIdentifiers.get(i);
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int mappedId = newIdentifierMap.getInt(oldIdentifier.getAsString());
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if (mappedId == -1) {
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// Search in diff mappings
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if (diffIdentifiers != null) {
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JsonElement diffElement = diffIdentifiers.get(oldIdentifier.getAsString());
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if (diffElement != null) {
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String mappedName = diffElement.getAsString();
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if (mappedName.isEmpty()) continue; // "empty" remaps
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mappedId = newIdentifierMap.getInt(mappedName);
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}
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}
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if (mappedId == -1) {
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if (warnOnMissing && !Via.getConfig().isSuppressConversionWarnings() || Via.getManager().isDebug()) {
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Via.getPlatform().getLogger().warning("No key for " + oldIdentifier + " :( ");
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}
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continue;
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}
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}
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output[i] = mappedId;
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}
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}
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/**
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* Returns a map of the object entries hashed by their id value.
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*
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* @param object json object
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* @return map with indexes hashed by their id value
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*/
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public static Object2IntMap<String> indexedObjectToMap(JsonObject object) {
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Object2IntMap<String> map = new Object2IntOpenHashMap<>(object.size(), .99F);
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map.defaultReturnValue(-1);
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for (Map.Entry<String, JsonElement> entry : object.entrySet()) {
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map.put(entry.getValue().getAsString(), Integer.parseInt(entry.getKey()));
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}
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return map;
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}
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/**
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* Returns a map of the array entries hashed by their id value.
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*
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* @param array json array
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* @return map with indexes hashed by their id value
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*/
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public static Object2IntMap<String> arrayToMap(JsonArray array) {
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Object2IntMap<String> map = new Object2IntOpenHashMap<>(array.size(), .99F);
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map.defaultReturnValue(-1);
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for (int i = 0; i < array.size(); i++) {
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map.put(array.get(i).getAsString(), i);
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}
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return map;
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}
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public static @Nullable InputStream getResource(String name) {
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return MappingDataLoader.class.getClassLoader().getResourceAsStream("assets/viaversion/data/" + name);
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}
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}
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