From 2b58d6953418b285cc8a609989c5844789c992cd Mon Sep 17 00:00:00 2001
From: cfuncode <36926346+cfuncode@users.noreply.github.com>
Date: Sat, 7 May 2022 04:39:37 +0800
Subject: [PATCH] Improved fault tolerance for json file deserialization (#595)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* 修复一个Gson发序列化json文件的空值问题

* Improved fault tolerance for json file deserialization
---
 .../emu/grasscutter/data/ResourceLoader.java  | 18 +++---
 .../java/emu/grasscutter/utils/Utils.java     | 55 ++++++++++++++++---
 2 files changed, 57 insertions(+), 16 deletions(-)

diff --git a/src/main/java/emu/grasscutter/data/ResourceLoader.java b/src/main/java/emu/grasscutter/data/ResourceLoader.java
index 5478052d82c..b1e3da9ff01 100644
--- a/src/main/java/emu/grasscutter/data/ResourceLoader.java
+++ b/src/main/java/emu/grasscutter/data/ResourceLoader.java
@@ -7,6 +7,7 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import com.google.gson.Gson;
 import emu.grasscutter.utils.Utils;
 import org.reflections.Reflections;
 
@@ -120,14 +121,15 @@ protected static void loadFromResource(Class<?> c, ResourceType type, Int2Object
 	
 	@SuppressWarnings({"rawtypes", "unchecked"})
 	protected static void loadFromResource(Class<?> c, String fileName, Int2ObjectMap map) throws Exception {
-		try (FileReader fileReader = new FileReader(Grasscutter.getConfig().RESOURCE_FOLDER + "ExcelBinOutput/" + fileName)) {
-			List list = Grasscutter.getGsonFactory().fromJson(fileReader, TypeToken.getParameterized(Collection.class, c).getType());
-
-			for (Object o : list) {
-				GameResource res = (GameResource) o;
-				res.onLoad();
-				map.put(res.getId(), res);
-			}
+		FileReader fileReader = new FileReader(Grasscutter.getConfig().RESOURCE_FOLDER + "ExcelBinOutput/" + fileName);
+		Gson gson = Grasscutter.getGsonFactory();
+		List list = gson.fromJson(fileReader, List.class);
+
+		for (Object o : list) {
+			Map<String, Object> tempMap = Utils.switchPropertiesUpperLowerCase((Map<String, Object>) o, c);
+			GameResource res = gson.fromJson(gson.toJson(tempMap), TypeToken.get(c).getType());
+			res.onLoad();
+			map.put(res.getId(), res);
 		}
 	}
 
diff --git a/src/main/java/emu/grasscutter/utils/Utils.java b/src/main/java/emu/grasscutter/utils/Utils.java
index 1b4a00b9099..931a37617f0 100644
--- a/src/main/java/emu/grasscutter/utils/Utils.java
+++ b/src/main/java/emu/grasscutter/utils/Utils.java
@@ -1,20 +1,24 @@
 package emu.grasscutter.utils;
 
-import java.io.*;
-import java.nio.file.Files;
-import java.nio.file.StandardCopyOption;
-import java.time.*;
-import java.time.temporal.TemporalAdjusters;
-import java.util.Random;
-
 import emu.grasscutter.Config;
 import emu.grasscutter.Grasscutter;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufUtil;
 import io.netty.buffer.Unpooled;
-
 import org.slf4j.Logger;
 
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
+import java.time.DayOfWeek;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.time.temporal.TemporalAdjusters;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Random;
+
 @SuppressWarnings({"UnusedReturnValue", "BooleanMethodIsAlwaysInverted"})
 public final class Utils {
 	public static final Random random = new Random();
@@ -230,4 +234,39 @@ public static int GetNextTimestampOfThisHourInNextMonth(int hour, String timeZon
 		}
 		return (int)zonedDateTime.toInstant().atZone(ZoneOffset.UTC).toEpochSecond();
 	}
+
+	public static Map<String, Object> switchPropertiesUpperLowerCase(Map<String, Object> objMap, Class<?> cls) {
+		Map<String, Object> map = new HashMap<>(objMap.size());
+		for (String key : objMap.keySet()) {
+			try {
+				char c = key.charAt(0);
+				if (c >= 'a' && c <= 'z') {
+					try {
+						cls.getDeclaredField(key);
+						map.put(key, objMap.get(key));
+					} catch (NoSuchFieldException e) {
+						String s1 = String.valueOf(c).toUpperCase();
+						String after = key.length() > 1 ? s1 + key.substring(1) : s1;
+						cls.getDeclaredField(after);
+						map.put(after, objMap.get(key));
+					}
+				} else if (c >= 'A' && c <= 'Z') {
+					try {
+						cls.getDeclaredField(key);
+						map.put(key, objMap.get(key));
+					} catch (NoSuchFieldException e) {
+						String s1 = String.valueOf(c).toLowerCase();
+						String after = key.length() > 1 ? s1 + key.substring(1) : s1;
+						cls.getDeclaredField(after);
+						map.put(after, objMap.get(key));
+					}
+				}
+			} catch (NoSuchFieldException e) {
+				map.put(key, objMap.get(key));
+			}
+		}
+
+		return map;
+	}
+
 }