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package kubatech.api.utils;
import com.google.gson.*;
import java.io.File;
import java.io.IOException;
import java.io.Reader;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Type;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import net.minecraft.nbt.CompressedStreamTools;
import net.minecraft.nbt.NBTSizeTracker;
import net.minecraft.nbt.NBTTagCompound;
public class GSONUtils {
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface SkipGSON {}
private static final ExclusionStrategy GSONStrategy = new ExclusionStrategy() {
@Override
public boolean shouldSkipField(FieldAttributes f) {
return f.getAnnotation(SkipGSON.class) != null;
}
@Override
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
};
private static final JsonSerializer<NBTTagCompound> NBTTagCompoundSerializer =
new JsonSerializer<NBTTagCompound>() {
@Override
public JsonElement serialize(NBTTagCompound src, Type typeOfSrc, JsonSerializationContext context) {
try {
JsonArray array = new JsonArray();
for (byte b : CompressedStreamTools.compress(src)) {
array.add(new JsonPrimitive(b));
}
return array;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
};
private static final JsonDeserializer<NBTTagCompound> NBTTagCompoundDeserializer =
new JsonDeserializer<NBTTagCompound>() {
@Override
public NBTTagCompound deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
try {
if (!(json instanceof JsonArray)) return null;
byte[] bytes = new byte[((JsonArray) json).size()];
for (int i = 0; i < bytes.length; i++)
bytes[i] = ((JsonArray) json).get(i).getAsByte();
return CompressedStreamTools.func_152457_a(bytes, new NBTSizeTracker(2097152L));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
};
public static final GsonBuilder GSON_BUILDER = new GsonBuilder()
.addSerializationExclusionStrategy(GSONStrategy)
.addDeserializationExclusionStrategy(GSONStrategy)
.registerTypeAdapter(NBTTagCompound.class, NBTTagCompoundDeserializer)
.registerTypeAdapter(NBTTagCompound.class, NBTTagCompoundSerializer)
.serializeNulls();
public static final GsonBuilder GSON_BUILDER_PRETTY = new GsonBuilder()
.addSerializationExclusionStrategy(GSONStrategy)
.addDeserializationExclusionStrategy(GSONStrategy)
.registerTypeAdapter(NBTTagCompound.class, NBTTagCompoundDeserializer)
.registerTypeAdapter(NBTTagCompound.class, NBTTagCompoundSerializer)
.serializeNulls()
.setPrettyPrinting();
public static <T> T readFile(Gson gson, File file, Class<T> tClass) {
if (!file.exists()) return null;
if (!file.isFile()) return null;
T t = null;
Reader reader = null;
try {
reader = Files.newBufferedReader(file.toPath(), StandardCharsets.UTF_8);
t = gson.fromJson(reader, tClass);
} catch (Exception ignored) {
} finally {
if (reader != null)
try {
reader.close();
} catch (Exception ignored) {
}
}
return t;
}
}
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