+ * Note: This will completely override current item's {@link ItemMeta}.
+ * If you still want to keep the original item's NBT tags, see
+ * {@link #mergeNBT(ItemStack)} and {@link #mergeCustomNBT(ItemStack)}.
+ *
+ * @param item ItemStack that should get the new NBT data
+ */
+ public void applyNBT(ItemStack item) {
+ if (item == null || item.getType() == Material.AIR) {
+ throw new NullPointerException("ItemStack can't be null/Air!");
+ }
+ NBTItem nbti = new NBTItem(new ItemStack(item.getType()));
+ nbti.mergeCompound(this);
+ item.setItemMeta(nbti.getItem().getItemMeta());
+ }
+
+ /**
+ * Merge all NBT tags to the provided ItemStack.
+ *
+ * @param item ItemStack that should get the new NBT data
+ */
+ public void mergeNBT(ItemStack item) {
+ NBTItem nbti = new NBTItem(item);
+ nbti.mergeCompound(this);
+ item.setItemMeta(nbti.getItem().getItemMeta());
+ }
+
+ /**
+ * Merge only custom (non-vanilla) NBT tags to the provided ItemStack.
+ *
+ * @param item ItemStack that should get the new NBT data
+ */
+ public void mergeCustomNBT(ItemStack item) {
+ if (item == null || item.getType() == Material.AIR) {
+ throw new NullPointerException("ItemStack can't be null/Air!");
+ }
+ ItemMeta meta = item.getItemMeta();
+ NBTReflectionUtil.getUnhandledNBTTags(meta).putAll(NBTReflectionUtil.getUnhandledNBTTags(bukkitItem.getItemMeta()));
+ item.setItemMeta(meta);
+ }
+
+
+ /**
+ * True, if the item has any tags now known for this item type.
+ *
+ * @return true when custom tags are present
+ */
+ public boolean hasCustomNbtData() {
+ ItemMeta meta = bukkitItem.getItemMeta();
+ return !NBTReflectionUtil.getUnhandledNBTTags(meta).isEmpty();
+ }
+
+ /**
+ * Remove all custom (non-vanilla) NBT tags from the NBTItem.
+ */
+ public void clearCustomNBT() {
+ ItemMeta meta = bukkitItem.getItemMeta();
+ NBTReflectionUtil.getUnhandledNBTTags(meta).clear();
+ bukkitItem.setItemMeta(meta);
+ }
+
+ /**
+ * @return The modified ItemStack
+ */
+ public ItemStack getItem() {
+ return bukkitItem;
+ }
+
+ protected void setItem(ItemStack item) {
+ bukkitItem = item;
+ }
+
+ /**
+ * This may return true even when the NBT is empty.
+ *
+ * @return Does the ItemStack have a NBTCompound.
+ */
+ public boolean hasNBTData() {
+ return getCompound() != null;
+ }
+
+ /**
+ * Helper method that converts {@link ItemStack} to {@link NBTContainer} with
+ * all it's data like Material, Damage, Amount and Tags.
+ *
+ * @param item
+ * @return Standalone {@link NBTContainer} with the Item's data
+ */
+ public static NBTContainer convertItemtoNBT(ItemStack item) {
+ return NBTReflectionUtil.convertNMSItemtoNBTCompound(ReflectionMethod.ITEMSTACK_NMSCOPY.run(null, item));
+ }
+
+ /**
+ * Helper method to do the inverse to "convertItemtoNBT". Creates an
+ * {@link ItemStack} using the {@link NBTCompound}
+ *
+ * @param comp
+ * @return ItemStack using the {@link NBTCompound}'s data
+ */
+ public static ItemStack convertNBTtoItem(NBTCompound comp) {
+ return (ItemStack) ReflectionMethod.ITEMSTACK_BUKKITMIRROR.run(null,
+ NBTReflectionUtil.convertNBTCompoundtoNMSItem(comp));
+ }
+
+ @Override
+ protected void saveCompound() {
+ if(directApply) {
+ applyNBT(originalSrcStack);
+ }
+ }
+
+}
diff --git a/src/com/pretzel/dev/villagertradelimiter/nms/NBTList.java b/src/com/pretzel/dev/villagertradelimiter/nms/NBTList.java
new file mode 100644
index 0000000..cf6294a
--- /dev/null
+++ b/src/com/pretzel/dev/villagertradelimiter/nms/NBTList.java
@@ -0,0 +1,429 @@
+package com.pretzel.dev.villagertradelimiter.nms;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.ListIterator;
+import java.util.NoSuchElementException;
+
+import com.pretzel.dev.villagertradelimiter.nms.utils.MinecraftVersion;
+import com.pretzel.dev.villagertradelimiter.nms.utils.nmsmappings.ReflectionMethod;
+
+/**
+ * Abstract List implementation for ListCompounds
+ *
+ * @author tr7zw
+ *
+ * @param
+ * Check out https://bStats.org/ to learn more about bStats!
+ *
+ * This class is modified by tr7zw to work when the api is shaded into other peoples plugins.
+ */
+public class ApiMetricsLite {
+
+ private static final String PLUGINNAME = "ItemNBTAPI"; // DO NOT CHANGE THE NAME! else it won't link the data on bStats
+
+ // The version of this bStats class
+ public static final int B_STATS_VERSION = 1;
+
+ // The version of the NBT-Api bStats
+ public static final int NBT_BSTATS_VERSION = 1;
+
+ // The url to which the data is sent
+ private static final String URL = "https://bStats.org/submitData/bukkit";
+
+ // Is bStats enabled on this server?
+ private boolean enabled;
+
+ // Should failed requests be logged?
+ private static boolean logFailedRequests;
+
+ // Should the sent data be logged?
+ private static boolean logSentData;
+
+ // Should the response text be logged?
+ private static boolean logResponseStatusText;
+
+ // The uuid of the server
+ private static String serverUUID;
+
+ // The plugin
+ private Plugin plugin;
+
+ /**
+ * Class constructor.
+ *
+ */
+ public ApiMetricsLite() {
+
+ // The register method just uses any enabled plugin it can find to register. This *shouldn't* cause any problems, since the plugin isn't used any other way.
+ // Register our service
+ for(Plugin plug : Bukkit.getPluginManager().getPlugins()) {
+ plugin = plug;
+ if(plugin != null)
+ break;
+ }
+ if(plugin == null) {
+ return;// Didn't find any plugin that could work
+ }
+
+ // Get the config file
+ File bStatsFolder = new File(plugin.getDataFolder().getParentFile(), "bStats");
+ File configFile = new File(bStatsFolder, "config.yml");
+ YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
+
+ // Check if the config file exists
+ if (!config.isSet("serverUuid")) {
+
+ // Add default values
+ config.addDefault("enabled", true);
+ // Every server gets it's unique random id.
+ config.addDefault("serverUuid", UUID.randomUUID().toString());
+ // Should failed request be logged?
+ config.addDefault("logFailedRequests", false);
+ // Should the sent data be logged?
+ config.addDefault("logSentData", false);
+ // Should the response text be logged?
+ config.addDefault("logResponseStatusText", false);
+
+ // Inform the server owners about bStats
+ config.options().header(
+ "bStats collects some data for plugin authors like how many servers are using their plugins.\n" +
+ "To honor their work, you should not disable it.\n" +
+ "This has nearly no effect on the server performance!\n" +
+ "Check out https://bStats.org/ to learn more :)"
+ ).copyDefaults(true);
+ try {
+ config.save(configFile);
+ } catch (IOException ignored) { }
+ }
+
+ // Load the data
+ serverUUID = config.getString("serverUuid");
+ logFailedRequests = config.getBoolean("logFailedRequests", false);
+ enabled = config.getBoolean("enabled", true);
+ logSentData = config.getBoolean("logSentData", false);
+ logResponseStatusText = config.getBoolean("logResponseStatusText", false);
+ if (enabled) {
+ boolean found = false;
+ // Search for all other bStats Metrics classes to see if we are the first one
+ for (Class service : Bukkit.getServicesManager().getKnownServices()) {
+ try {
+ service.getField("NBT_BSTATS_VERSION"); // Create only one instance of the nbt-api bstats.
+ return;
+ } catch (NoSuchFieldException ignored) { }
+ try {
+ service.getField("B_STATS_VERSION"); // Our identifier :)
+ found = true; // We aren't the first
+ break;
+ } catch (NoSuchFieldException ignored) { }
+ }
+ boolean fFound = found;
+ // Register our service
+ if(Bukkit.isPrimaryThread()){
+ Bukkit.getServicesManager().register(ApiMetricsLite.class, this, plugin, ServicePriority.Normal);
+ if (!fFound) {
+ getLogger().info("[NBTAPI] Using the plugin '" + plugin.getName() + "' to create a bStats instance!");
+ // We are the first!
+ startSubmitting();
+ }
+ }else{
+ Bukkit.getScheduler().runTask(plugin, () -> {
+ Bukkit.getServicesManager().register(ApiMetricsLite.class, this, plugin, ServicePriority.Normal);
+ if (!fFound) {
+ getLogger().info("[NBTAPI] Using the plugin '" + plugin.getName() + "' to create a bStats instance!");
+ // We are the first!
+ startSubmitting();
+ }
+ });
+ }
+ }
+ }
+
+ /**
+ * Checks if bStats is enabled.
+ *
+ * @return Whether bStats is enabled or not.
+ */
+ public boolean isEnabled() {
+ return enabled;
+ }
+
+ /**
+ * Starts the Scheduler which submits our data every 30 minutes.
+ */
+ private void startSubmitting() {
+ final Timer timer = new Timer(true); // We use a timer cause the Bukkit scheduler is affected by server lags
+ timer.scheduleAtFixedRate(new TimerTask() {
+ @Override
+ public void run() {
+ if (!plugin.isEnabled()) { // Plugin was disabled
+ timer.cancel();
+ return;
+ }
+ // Nevertheless we want our code to run in the Bukkit main thread, so we have to use the Bukkit scheduler
+ // Don't be afraid! The connection to the bStats server is still async, only the stats collection is sync ;)
+ Bukkit.getScheduler().runTask(plugin, () -> submitData());
+ }
+ }, 1000l * 60l * 5l, 1000l * 60l * 30l);
+ // Submit the data every 30 minutes, first time after 5 minutes to give other plugins enough time to start
+ // WARNING: Changing the frequency has no effect but your plugin WILL be blocked/deleted!
+ // WARNING: Just don't do it!
+ }
+
+ /**
+ * Gets the plugin specific data.
+ * This method is called using Reflection.
+ *
+ * @return The plugin specific data.
+ */
+ public JsonObject getPluginData() {
+ JsonObject data = new JsonObject();
+
+ data.addProperty("pluginName", PLUGINNAME); // Append the name of the plugin
+ data.addProperty("pluginVersion", MinecraftVersion.VERSION); // Append the version of the plugin
+ data.add("customCharts", new JsonArray());
+
+ return data;
+ }
+
+ /**
+ * Gets the server specific data.
+ *
+ * @return The server specific data.
+ */
+ private JsonObject getServerData() {
+ // Minecraft specific data
+ int playerAmount;
+ try {
+ // Around MC 1.8 the return type was changed to a collection from an array,
+ // This fixes java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljava/util/Collection;
+ Method onlinePlayersMethod = Class.forName("org.bukkit.Server").getMethod("getOnlinePlayers");
+ playerAmount = onlinePlayersMethod.getReturnType().equals(Collection.class)
+ ? ((Collection) onlinePlayersMethod.invoke(Bukkit.getServer())).size()
+ : ((Player[]) onlinePlayersMethod.invoke(Bukkit.getServer())).length;
+ } catch (Exception e) {
+ playerAmount = Bukkit.getOnlinePlayers().size(); // Just use the new method if the Reflection failed
+ }
+ int onlineMode = Bukkit.getOnlineMode() ? 1 : 0;
+ String bukkitVersion = Bukkit.getVersion();
+ String bukkitName = Bukkit.getName();
+
+ // OS/Java specific data
+ String javaVersion = System.getProperty("java.version");
+ String osName = System.getProperty("os.name");
+ String osArch = System.getProperty("os.arch");
+ String osVersion = System.getProperty("os.version");
+ int coreCount = Runtime.getRuntime().availableProcessors();
+
+ JsonObject data = new JsonObject();
+
+ data.addProperty("serverUUID", serverUUID);
+
+ data.addProperty("playerAmount", playerAmount);
+ data.addProperty("onlineMode", onlineMode);
+ data.addProperty("bukkitVersion", bukkitVersion);
+ data.addProperty("bukkitName", bukkitName);
+
+ data.addProperty("javaVersion", javaVersion);
+ data.addProperty("osName", osName);
+ data.addProperty("osArch", osArch);
+ data.addProperty("osVersion", osVersion);
+ data.addProperty("coreCount", coreCount);
+
+ return data;
+ }
+
+ /**
+ * Collects the data and sends it afterwards.
+ */
+ private void submitData() {
+ final JsonObject data = getServerData();
+
+ JsonArray pluginData = new JsonArray();
+ // Search for all other bStats Metrics classes to get their plugin data
+ for (Class service : Bukkit.getServicesManager().getKnownServices()) {
+ try {
+ service.getField("B_STATS_VERSION"); // Our identifier :)
+
+ for (RegisteredServiceProvider provider : Bukkit.getServicesManager().getRegistrations(service)) {
+ try {
+ Object plugin = provider.getService().getMethod("getPluginData").invoke(provider.getProvider());
+ if (plugin instanceof JsonObject) {
+ pluginData.add((JsonObject) plugin);
+ } else { // old bstats version compatibility
+ try {
+ Class jsonObjectJsonSimple = Class.forName("org.json.simple.JSONObject");
+ if (plugin.getClass().isAssignableFrom(jsonObjectJsonSimple)) {
+ Method jsonStringGetter = jsonObjectJsonSimple.getDeclaredMethod("toJSONString");
+ jsonStringGetter.setAccessible(true);
+ String jsonString = (String) jsonStringGetter.invoke(plugin);
+ JsonObject object = new JsonParser().parse(jsonString).getAsJsonObject();
+ pluginData.add(object);
+ }
+ } catch (ClassNotFoundException e) {
+ // minecraft version 1.14+
+ if (logFailedRequests) {
+ getLogger().log(Level.WARNING, "[NBTAPI][BSTATS] Encountered exception while posting request!", e);
+ // Not using the plugins logger since the plugin isn't the plugin containing the NBT-Api most of the time
+ //this.plugin.getLogger().log(Level.SEVERE, "Encountered unexpected exception ", e);
+ }
+ continue; // continue looping since we cannot do any other thing.
+ }
+ }
+ } catch (NullPointerException | NoSuchMethodException | IllegalAccessException | InvocationTargetException ignored) {
+ }
+ }
+ } catch (NoSuchFieldException ignored) { }
+ }
+
+ data.add("plugins", pluginData);
+
+ // Create a new thread for the connection to the bStats server
+ new Thread(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ // Send the data
+ sendData(plugin, data);
+ } catch (Exception e) {
+ // Something went wrong! :(
+ if (logFailedRequests) {
+ getLogger().log(Level.WARNING, "[NBTAPI][BSTATS] Could not submit plugin stats of " + plugin.getName(), e);
+ // Not using the plugins logger since the plugin isn't the plugin containing the NBT-Api most of the time
+ //plugin.getLogger().log(Level.WARNING, "Could not submit plugin stats of " + plugin.getName(), e);
+ }
+ }
+ }
+ }).start();
+ }
+
+ /**
+ * Sends the data to the bStats server.
+ *
+ * @param plugin Any plugin. It's just used to get a logger instance.
+ * @param data The data to send.
+ * @throws Exception If the request failed.
+ */
+ private static void sendData(Plugin plugin, JsonObject data) throws Exception {
+ if (data == null) {
+ throw new IllegalArgumentException("Data cannot be null!");
+ }
+ if (Bukkit.isPrimaryThread()) {
+ throw new IllegalAccessException("This method must not be called from the main thread!");
+ }
+ if (logSentData) {
+ System.out.println("[NBTAPI][BSTATS] Sending data to bStats: " + data.toString());
+ // Not using the plugins logger since the plugin isn't the plugin containing the NBT-Api most of the time
+ //plugin.getLogger().info("Sending data to bStats: " + data.toString());
+ }
+ HttpsURLConnection connection = (HttpsURLConnection) new URL(URL).openConnection();
+
+ // Compress the data to save bandwidth
+ byte[] compressedData = compress(data.toString());
+
+ // Add headers
+ connection.setRequestMethod("POST");
+ connection.addRequestProperty("Accept", "application/json");
+ connection.addRequestProperty("Connection", "close");
+ connection.addRequestProperty("Content-Encoding", "gzip"); // We gzip our request
+ connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
+ connection.setRequestProperty("Content-Type", "application/json"); // We send our data in JSON format
+ connection.setRequestProperty("User-Agent", "MC-Server/" + B_STATS_VERSION);
+
+ // Send data
+ connection.setDoOutput(true);
+ DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream());
+ outputStream.write(compressedData);
+ outputStream.flush();
+ outputStream.close();
+
+ InputStream inputStream = connection.getInputStream();
+ BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
+
+ StringBuilder builder = new StringBuilder();
+ String line;
+ while ((line = bufferedReader.readLine()) != null) {
+ builder.append(line);
+ }
+ bufferedReader.close();
+ if (logResponseStatusText) {
+ getLogger().info("[NBTAPI][BSTATS] Sent data to bStats and received response: " + builder.toString());
+ // Not using the plugins logger since the plugin isn't the plugin containing the NBT-Api most of the time
+ //plugin.getLogger().info("Sent data to bStats and received response: " + builder.toString());
+ }
+ }
+
+ /**
+ * Gzips the given String.
+ *
+ * @param str The string to gzip.
+ * @return The gzipped String.
+ * @throws IOException If the compression failed.
+ */
+ private static byte[] compress(final String str) throws IOException {
+ if (str == null) {
+ return new byte[0];
+ }
+ ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+ GZIPOutputStream gzip = new GZIPOutputStream(outputStream);
+ gzip.write(str.getBytes(StandardCharsets.UTF_8));
+ gzip.close();
+ return outputStream.toByteArray();
+ }
+
+}
diff --git a/src/com/pretzel/dev/villagertradelimiter/nms/utils/GsonWrapper.java b/src/com/pretzel/dev/villagertradelimiter/nms/utils/GsonWrapper.java
new file mode 100644
index 0000000..847228c
--- /dev/null
+++ b/src/com/pretzel/dev/villagertradelimiter/nms/utils/GsonWrapper.java
@@ -0,0 +1,54 @@
+package com.pretzel.dev.villagertradelimiter.nms.utils;
+
+import com.google.gson.Gson;
+
+import com.pretzel.dev.villagertradelimiter.nms.NbtApiException;
+
+/**
+ * Helper class for 1.7 servers without Gson
+ *
+ * @author tr7zw
+ *
+ */
+public class GsonWrapper {
+
+ /**
+ * Private constructor
+ */
+ private GsonWrapper() {
+
+ }
+
+ private static final Gson gson = new Gson();
+
+ /**
+ * Turns Objects into Json Strings
+ *
+ * @param obj
+ * @return Json, representing the Object
+ */
+ public static String getString(Object obj) {
+ return gson.toJson(obj);
+ }
+
+ /**
+ * Creates an Object of the given type using the Json String
+ *
+ * @param json
+ * @param type
+ * @return Object that got created, or null if the json is null
+ */
+ public static