Respackopts/src/main/java/io/gitlab/jfronny/respackopts/mixin/ResourcePackManagerMixin.java

58 lines
2.4 KiB
Java

package io.gitlab.jfronny.respackopts.mixin;
import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import io.gitlab.jfronny.respackopts.Respackopts;
import io.gitlab.jfronny.respackopts.data.Respackmeta;
import net.minecraft.resource.ResourcePackManager;
import net.minecraft.resource.ResourcePackProfile;
import net.minecraft.resource.ResourceType;
import net.minecraft.util.Identifier;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
@Mixin(ResourcePackManager.class)
public class ResourcePackManagerMixin {
@Shadow private Map<String, ResourcePackProfile> profiles;
@Inject(at = @At("TAIL"), method = "scanPacks()V")
private void scanPacks(CallbackInfo info) {
profiles.forEach((s, v) -> {
if (hasMetadata(v, "meta.json") && hasMetadata(v, "conf.json")) {
try {
Respackmeta.JsonMeta meta = Respackopts.g.fromJson(readMetadata(v, "meta.json", Respackopts.g), Respackmeta.JsonMeta.class);
if (Respackopts.metaVersion.equals(meta.version)) {
Respackopts.resPackMetas.put(v.getDisplayName().asString(), new Respackmeta(meta, readMetadata(v, "conf.json", Respackopts.g)));
}
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
private boolean hasMetadata(ResourcePackProfile v, String fname) {
return v.createResourcePack().contains(ResourceType.CLIENT_RESOURCES, new Identifier(Respackopts.ID, fname));
}
private JsonObject readMetadata(ResourcePackProfile v, String fname, Gson g) throws IOException {
InputStream is = v.createResourcePack().open(ResourceType.CLIENT_RESOURCES, new Identifier(Respackopts.ID, fname));
ByteArrayOutputStream bais = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int length;
while ((length = is.read(buffer)) != -1) {
bais.write(buffer, 0, length);
}
return g.fromJson(bais.toString(), JsonElement.class).getAsJsonObject();
}
}