Finish backup.

TODO:
- restore

12 files changed, 623 insertions, 43 deletions

diff --git a/src/main/java/com/keuin/kbackupfabric/KBCommandHandler.java b/src/main/java/com/keuin/kbackupfabric/KBCommandHandler.java
new file mode 100644
index 0000000..c1d176c
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/KBCommandHandler.java
@@ -0,0 +1,184 @@
+package com.keuin.kbackupfabric;
+
+import com.keuin.kbackupfabric.util.ZipUtil;
+import com.keuin.kbackupfabric.util.ZipUtilException;
+import com.mojang.brigadier.arguments.StringArgumentType;
+import com.mojang.brigadier.context.CommandContext;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.text.LiteralText;
+import net.minecraft.world.World;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.io.File;
+import java.io.IOException;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.HashMap;
+import java.util.Map;
+
+public class KBCommandHandler {
+
+    private static final Logger LOGGER = LogManager.getLogger();
+    private static final int SUCCESS = 1;
+    private static final int FAILED = -1;
+    private static final boolean printDebugMessages = true;
+    private static final boolean printErrorMessages = true;
+    private static final String backupSaveDirectoryName = "backups";
+    private static final String backupFileNamePrefix = "kbackup-";
+
+    /**
+     * Print the help menu.
+     *
+     * @param context the context.
+     * @return stat code.
+     */
+    public static int help(CommandContext<ServerCommandSource> context) {
+        message(context, "KBackup Manual");
+        message(context, "/kb | /kb help            Print help menu.");
+        message(context, "/kb list                  Show all backups.");
+        message(context, "/kb backup [backup_name]  Backup world, nether, end to backup_name. By default, the name is current system time.");
+        message(context, "/kb restore <backup_name> Delete current three worlds, restore the older version from given backup. By default, this command is identical with /kb list.");
+        return SUCCESS;
+    }
+
+    public static int list(CommandContext<ServerCommandSource> context) {
+        message(context, "Available backups: (file is not checked, manipulation may affect this plugin)");
+        MinecraftServer server = context.getSource().getMinecraftServer();
+        File[] files = getBackupSaveDirectory(server).listFiles(
+                (dir, name) -> dir.isDirectory() && name.toLowerCase().endsWith(".zip") && name.toLowerCase().startsWith(backupFileNamePrefix)
+        );
+        if (files != null) {
+            for (File file : files) {
+                message(context, file.getName());
+            }
+        }
+        return SUCCESS;
+    }
+
+    /**
+     * Backup with context parameter backupName.
+     *
+     * @param context the context.
+     * @return stat code.
+     */
+    public static int backup(CommandContext<ServerCommandSource> context) {
+        //KBMain.backup("name")
+        return doBackup(context, StringArgumentType.getString(context, "backupName"));
+    }
+
+    /**
+     * Backup with default name.
+     *
+     * @param context the context.
+     * @return stat code.
+     */
+    public static int backupWithDefaultName(CommandContext<ServerCommandSource> context) {
+        //KBMain.backup("name")
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd-HH-mm-ss");
+        String timeString = LocalDateTime.now().format(formatter);
+        return doBackup(context, timeString);
+    }
+
+    private static int doBackup(CommandContext<ServerCommandSource> context, String backupName) {
+        String destPathFolderName = "";
+        try {
+            message(context, String.format("Making backup %s ...", backupName), true);
+            Map<World, Boolean> oldWorldsSavingDisabled = new HashMap<>(); // old switch stat
+
+            // Get server
+            MinecraftServer server = context.getSource().getMinecraftServer();
+
+            // Save old autosave switch stat temporally
+            server.getWorlds().forEach(world -> {
+                oldWorldsSavingDisabled.put(world, world.savingDisabled);
+                world.savingDisabled = true;
+            });
+
+            // Force to save all player data and worlds
+            debug("Saving players ...");
+            server.getPlayerManager().saveAllPlayerData();
+            debug("Saving worlds ...");
+            server.save(true, true, true);
+
+            //// Do our main backup logic
+
+            // Get the level folder
+            File sourcePathFile = new File(server.getRunDirectory(), server.getLevelName());
+
+            // Create backup saving directory
+            File destPathFile = getBackupSaveDirectory(server);
+            destPathFolderName = destPathFile.getName();
+            if (!destPathFile.mkdir() && !destPathFile.isDirectory()) {
+                message(context, String.format("Failed to create backup saving directory: %s. Failed to backup.", destPathFolderName));
+                return FAILED;
+            }
+
+            // Make zip
+            debug(String.format("zip(srcPath=%s, destPath=%s)", sourcePathFile.getAbsolutePath(), destPathFile.toString()));
+            ZipUtil.zip(sourcePathFile.getAbsolutePath(), destPathFile.toString(), backupFileNamePrefix + backupName + ".zip");
+
+
+            // Restore old autosave switch stat
+            server.getWorlds().forEach(world -> world.savingDisabled = oldWorldsSavingDisabled.getOrDefault(world, true));
+
+            message(context, "Done.", true);
+            return SUCCESS;
+        } catch (SecurityException e) {
+            message(context, String.format("Failed to create backup saving directory: %s. Failed to backup.", destPathFolderName));
+            return FAILED;
+        } catch (IOException | ZipUtilException e) {
+            message(context, "Failed to make zip: " + e.getMessage());
+            return FAILED;
+        }
+    }
+
+    private static File getBackupSaveDirectory(MinecraftServer server) {
+        return new File(server.getRunDirectory(), backupSaveDirectoryName);
+    }
+
+    /**
+     * Restore with context parameter backupName.
+     *
+     * @param context the context.
+     * @return stat code.
+     */
+    public static int restore(CommandContext<ServerCommandSource> context) {
+        //KBMain.restore("name")
+        String backupName = StringArgumentType.getString(context, "backupName");
+        message(context, String.format("Restoring worlds to %s ...", backupName), true);
+        // do restore to backupName
+
+        message(context, "Done.", true);
+        return SUCCESS;
+    }
+
+    private static CommandContext<ServerCommandSource> message(CommandContext<ServerCommandSource> context, String messageText) {
+        return message(context, messageText, false);
+    }
+
+    private static CommandContext<ServerCommandSource> message(CommandContext<ServerCommandSource> context, String messageText, boolean broadcastToOps) {
+        context.getSource().sendFeedback(new LiteralText("[KBackup] " + messageText), broadcastToOps);
+        return context;
+    }
+
+    static boolean opPermissionValidator(ServerCommandSource commandSource) {
+        return commandSource.hasPermissionLevel(4);
+    }
+
+    private static void debug(String debugMessage) {
+        if (printDebugMessages) {
+            System.out.println(String.format("[DEBUG] [KBackup] %s", debugMessage));
+            LOGGER.debug(debugMessage);
+        }
+    }
+
+    private static void error(String errorMessage) {
+        if (printErrorMessages) {
+            System.out.println(String.format("[ERROR] [KBackup] %s", errorMessage));
+            LOGGER.error(errorMessage);
+        }
+    }
+
+}
diff --git a/src/main/java/com/keuin/kbackupfabric/KBCommandRegister.java b/src/main/java/com/keuin/kbackupfabric/KBCommandRegister.java
new file mode 100644
index 0000000..96f05e8
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/KBCommandRegister.java
@@ -0,0 +1,86 @@
+package com.keuin.kbackupfabric;
+
+import com.mojang.brigadier.CommandDispatcher;
+import com.mojang.brigadier.arguments.StringArgumentType;
+import net.minecraft.server.command.CommandManager;
+import net.minecraft.server.command.ServerCommandSource;
+
+public class KBCommandRegister {
+
+    // First make method to register
+    public static void register(CommandDispatcher<ServerCommandSource> dispatcher) {
+        // register /kb and /kb help for help menu
+        dispatcher.register(CommandManager.literal("kb").executes(KBCommandHandler::help));
+        dispatcher.register(CommandManager.literal("kb").then(CommandManager.literal("help").executes(KBCommandHandler::help)));
+
+        // register /kb list for showing the backup list
+        dispatcher.register(CommandManager.literal("kb").then(CommandManager.literal("list").executes(KBCommandHandler::list)));
+
+        // register /kb backup [name] for performing backup. OP is required.
+        dispatcher.register(CommandManager.literal("kb").then(CommandManager.literal("backup").then(CommandManager.argument("backupName", StringArgumentType.string()).requires(KBCommandHandler::opPermissionValidator).executes(KBCommandHandler::backup)).requires(KBCommandHandler::opPermissionValidator).executes(KBCommandHandler::backupWithDefaultName)));
+
+        // register /kb restore <name> for performing restore. OP is required.
+        dispatcher.register(CommandManager.literal("kb").then(CommandManager.literal("restore").then(CommandManager.argument("backupName", StringArgumentType.string()).requires(KBCommandHandler::opPermissionValidator).executes(KBCommandHandler::restore)).executes(KBCommandHandler::list)));
+
+
+//        LiteralCommandNode<ServerCommandSource> basenode = dispatcher.register(literal("findBiome")
+//                .then(argument("biome_identifier", identifier()).suggests(BiomeCompletionProvider.BIOMES) // We use Biome suggestions for identifier argument
+//                        .then(argument("distance", integer(0, 20000))
+//                                .executes(ctx -> execute(ctx.getSource(), getIdentifier(ctx, "biome_identifier"), getInteger(ctx, "distance"))))
+//                        .executes(ctx -> execute(ctx.getSource(), getIdentifier(ctx, "biome_identifier"), 1000))));
+//        // Register redirect
+//        dispatcher.register(literal("biome")
+//                .redirect(basenode));
+    }
+
+//    // Beginning of the method
+//    private static int execute(ServerCommandSource source, Identifier biomeId, int range) throws CommandSyntaxException {
+//        Biome biome = Registry.BIOME.get(biomeId);
+//
+//        if(biome == null) { // Since the argument is an Identifier we need to check if the identifier actually exists in the registry
+//            throw new SimpleCommandExceptionType(new TranslatableText("biome.not.exist", biomeId)).create();
+//        }
+//
+//        List<Biome> bio = new ArrayList<Biome>();
+//        bio.add(biome);
+//
+//        ServerWorld world = source.getWorld();
+//
+//        BiomeSource bsource = world.getChunkManager().getChunkGenerator().getBiomeSource();
+//
+//        BlockPos loc = new BlockPos(source.getPosition());
+//        // Now here is the heaviest part of the method.
+//        BlockPos pos = bsource.locateBiome(loc.getX(), loc.getZ(), range, bio, new Random(world.getSeed()));
+//
+//        // Since this method can return null if it failed to find a biome
+//        if(pos == null) {
+//            throw new SimpleCommandExceptionType(new TranslatableText("biome.notfound", biome.getTranslationKey())).create();
+//        }
+//
+//        int distance = MathHelper.floor(getDistance(loc.getX(), loc.getZ(), pos.getX(), pos.getZ()));
+//        // Popup text that can suggest commands. This is the exact same system that /locate uses.
+//        Text teleportButtonPopup = Texts.bracketed(new TranslatableText("chat.coordinates", new Object[] { pos.getX(), "~", pos.getZ()})).styled((style_1x) -> {
+//            style_1x.setColor(Formatting.GREEN).setClickEvent(new ClickEvent(ClickEvent.Action.SUGGEST_COMMAND, "/tp @s " + pos.getX() + " ~ " + pos.getZ())).setHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new TranslatableText("chat.coordinates.tooltip", new Object[0])));
+//        });
+//
+//        source.sendFeedback(new TranslatableText("commands.locate.success", new Object[] { new TranslatableText(Registry.BIOME.get(biomeId).getTranslationKey()), teleportButtonPopup, distance}), false);
+//
+//        return 1;
+//    }
+//    // Just a normal old 2d distance method.
+//    private static float getDistance(int int_1, int int_2, int int_3, int int_4) {
+//        int int_5 = int_3 - int_1;
+//        int int_6 = int_4 - int_2;
+//
+//        return MathHelper.sqrt((float) (int_5 * int_5 + int_6 * int_6));
+//    }
+//
+//    public static class BiomeCompletionProvider {
+//        // This provides suggestions of what biomes can be selected. Since this uses the registry, mods that add new biomes will work without modification.
+//        public static final SuggestionProvider<ServerCommandSource> BIOMES = SuggestionProviders.register(new Identifier("biomes"), (ctx, builder) -> {
+//            Registry.BIOME.getIds().stream().forEach(identifier -> builder.suggest(identifier.toString(), new TranslatableText(Registry.BIOME.get(identifier).getTranslationKey())));
+//            return builder.buildFuture();
+//        });
+//
+//    }
+}
diff --git a/src/main/java/com/keuin/kbackupfabric/KBMain.java b/src/main/java/com/keuin/kbackupfabric/KBMain.java
new file mode 100644
index 0000000..f2a3789
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/KBMain.java
@@ -0,0 +1,24 @@
+package com.keuin.kbackupfabric;
+
+public class KBMain {
+    /**
+     * Perform real backup process.
+     *
+     * @param backupName the backup name.
+     * @return true if success, false if failed.
+     */
+    public static boolean backup(String backupName) {
+
+        return true;
+    }
+
+    /**
+     * Perform real restore process.
+     *
+     * @param backupName the backup name.
+     * @return true if success, false if failed.
+     */
+    public static boolean restore(String backupName) {
+        return true;
+    }
+}
diff --git a/src/main/java/com/keuin/kbackupfabric/KBPluginInitializer.java b/src/main/java/com/keuin/kbackupfabric/KBPluginInitializer.java
new file mode 100644
index 0000000..684ec07
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/KBPluginInitializer.java
@@ -0,0 +1,12 @@
+package com.keuin.kbackupfabric;
+
+import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.registry.CommandRegistry;
+
+public class KBPluginInitializer implements ModInitializer {
+    @Override
+    public void onInitialize() {
+        System.out.println("Initializing KBackup...");
+        CommandRegistry.INSTANCE.register(false, KBCommandRegister::register);
+    }
+}
diff --git a/src/main/java/com/keuin/kbackupfabric/util/ReflectionUtils.java b/src/main/java/com/keuin/kbackupfabric/util/ReflectionUtils.java
new file mode 100644
index 0000000..f7bc351
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/ReflectionUtils.java
@@ -0,0 +1,59 @@
+package com.keuin.kbackupfabric.util;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * @Author 落叶飞翔的蜗牛
+ * @Date 2018/3/10
+ * @Description
+ */
+public class ReflectionUtils {
+
+    /**
+     * 获取私有成员变量的值
+     *
+     * @param instance
+     * @param filedName
+     * @return
+     */
+    public static Object getPrivateField(Object instance, String filedName) throws NoSuchFieldException, IllegalAccessException {
+        Field field = instance.getClass().getDeclaredField(filedName);
+        field.setAccessible(true);
+        return field.get(instance);
+    }
+
+    /**
+     * 设置私有成员的值
+     *
+     * @param instance
+     * @param fieldName
+     * @param value
+     * @throws NoSuchFieldException
+     * @throws IllegalAccessException
+     */
+    public static void setPrivateField(Object instance, String fieldName, Object value) throws NoSuchFieldException, IllegalAccessException {
+        Field field = instance.getClass().getDeclaredField(fieldName);
+        field.setAccessible(true);
+        field.set(instance, value);
+    }
+
+    /**
+     * 访问私有方法
+     *
+     * @param instance
+     * @param methodName
+     * @param classes
+     * @param objects
+     * @return
+     * @throws NoSuchMethodException
+     * @throws InvocationTargetException
+     * @throws IllegalAccessException
+     */
+    public static Object invokePrivateMethod(Object instance, String methodName, Class[] classes, String objects) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+        Method method = instance.getClass().getDeclaredMethod(methodName, classes);
+        method.setAccessible(true);
+        return method.invoke(instance, objects);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/keuin/kbackupfabric/util/WorldUtil.java b/src/main/java/com/keuin/kbackupfabric/util/WorldUtil.java
new file mode 100644
index 0000000..badc068
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/WorldUtil.java
@@ -0,0 +1,15 @@
+package com.keuin.kbackupfabric.util;
+
+import net.minecraft.server.world.ThreadedAnvilChunkStorage;
+import net.minecraft.world.World;
+
+import java.io.File;
+
+public class WorldUtil {
+    public static String getWorldDirectoryName(World world) throws NoSuchFieldException, IllegalAccessException {
+        File saveDir;
+        ThreadedAnvilChunkStorage threadedAnvilChunkStorage = (ThreadedAnvilChunkStorage) ReflectionUtils.getPrivateField(world.getChunkManager(), "threadedAnvilChunkStorage");
+        saveDir = (File) ReflectionUtils.getPrivateField(threadedAnvilChunkStorage, "saveDir");
+        return saveDir.getName();
+    }
+}
diff --git a/src/main/java/com/keuin/kbackupfabric/util/ZipUtil.java b/src/main/java/com/keuin/kbackupfabric/util/ZipUtil.java
new file mode 100644
index 0000000..d92ab12
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/ZipUtil.java
@@ -0,0 +1,221 @@
+package com.keuin.kbackupfabric.util;
+
+import java.io.*;
+import java.util.Enumeration;
+import java.util.zip.*;
+
+public class ZipUtil {
+
+    /**
+     * 递归压缩文件夹
+     *
+     * @param srcRootDir 压缩文件夹根目录的子路径
+     * @param file       当前递归压缩的文件或目录对象
+     * @param zos        压缩文件存储对象
+     * @throws Exception
+     */
+    private static void zip(String srcRootDir, File file, ZipOutputStream zos) throws IOException {
+        if (file == null) {
+            return;
+        }
+
+        // 如果是文件，则直接压缩该文件
+        if (file.isFile()) {
+            int count, bufferLen = 1024;
+            byte[] data = new byte[bufferLen];
+
+            // 获取文件相对于压缩文件夹根目录的子路径
+            String subPath = file.getAbsolutePath();
+            int index = subPath.indexOf(srcRootDir);
+            if (index != -1) {
+                subPath = subPath.substring(srcRootDir.length() + File.separator.length());
+            }
+            ZipEntry entry = new ZipEntry(subPath);
+            zos.putNextEntry(entry);
+            BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
+            while ((count = bis.read(data, 0, bufferLen)) != -1) {
+                zos.write(data, 0, count);
+            }
+            bis.close();
+            zos.closeEntry();
+        }
+        // 如果是目录，则压缩整个目录
+        else {
+            // 压缩目录中的文件或子目录
+            File[] childFileList = file.listFiles();
+            for (int n = 0; n < childFileList.length; n++) {
+                childFileList[n].getAbsolutePath().indexOf(file.getAbsolutePath());
+                zip(srcRootDir, childFileList[n], zos);
+            }
+        }
+    }
+
+    /**
+     * 对文件或文件目录进行压缩
+     *
+     * @param srcPath     要压缩的源文件路径。如果是目录，则将递归压缩这个目录及其所有子文件、子目录树。
+     * @param zipPath     压缩文件保存的路径。注意：zipPath不能是srcPath路径下的子文件夹
+     * @param zipFileName 压缩文件名
+     * @throws Exception
+     */
+    public static void zip(String srcPath, String zipPath, String zipFileName) throws IOException, ZipUtilException {
+        if (srcPath.isEmpty() || zipPath.isEmpty() || zipFileName.isEmpty()) {
+            throw new ZipUtilException("Parameter for zip() contains null.");
+        }
+        CheckedOutputStream cos = null;
+        ZipOutputStream zos = null;
+        try {
+            File srcFile = new File(srcPath);
+
+            //判断压缩文件保存的路径是否为源文件路径的子文件夹，如果是，则抛出异常（防止无限递归压缩的发生）
+            if (srcFile.isDirectory() && zipPath.indexOf(srcPath) != -1) {
+                throw new ZipUtilException("Detected loop recursion in directory structure, please check symlink linking to parent directories.");
+            }
+
+            //判断压缩文件保存的路径是否存在，如果不存在，则创建目录
+            File zipDir = new File(zipPath);
+            if (!zipDir.exists() || !zipDir.isDirectory()) {
+                zipDir.mkdirs();
+            }
+
+            //创建压缩文件保存的文件对象
+            String zipFilePath = zipPath + File.separator + zipFileName;
+            File zipFile = new File(zipFilePath);
+            if (zipFile.exists()) {
+                //检测文件是否允许删除，如果不允许删除，将会抛出SecurityException
+                SecurityManager securityManager = new SecurityManager();
+                securityManager.checkDelete(zipFilePath);
+                //删除已存在的目标文件
+                zipFile.delete();
+            }
+
+            cos = new CheckedOutputStream(new FileOutputStream(zipFile), new CRC32());
+            zos = new ZipOutputStream(cos);
+
+            //如果只是压缩一个文件，则需要截取该文件的父目录
+            String srcRootDir = srcPath;
+            if (srcFile.isFile() || true) { // Hack this stupid setting. We want to keep our least parent folder!
+                int index = srcPath.lastIndexOf(File.separator);
+                if (index != -1) {
+                    srcRootDir = srcPath.substring(0, index);
+                }
+            }
+            //调用递归压缩方法进行目录或文件压缩
+            zip(srcRootDir, srcFile, zos);
+            zos.flush();
+        } catch (Exception e) {
+            throw e;
+        } finally {
+            try {
+                if (zos != null) {
+                    zos.close();
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    /**
+     * 解压缩zip包
+     *
+     * @param zipFilePath        zip文件的全路径
+     * @param unzipFilePath      解压后的文件保存的路径
+     * @param includeZipFileName 解压后的文件保存的路径是否包含压缩文件的文件名。true-包含；false-不包含
+     */
+    @SuppressWarnings("unchecked")
+    public static void unzip(String zipFilePath, String unzipFilePath, boolean includeZipFileName) throws ZipUtilException, IOException {
+        if (zipFilePath.isEmpty() || unzipFilePath.isEmpty()) {
+            throw new ZipUtilException("Parameter for unzip() contains null.");
+        }
+        File zipFile = new File(zipFilePath);
+        // 如果解压后的文件保存路径包含压缩文件的文件名，则追加该文件名到解压路径
+        if (includeZipFileName) {
+            String fileName = zipFile.getName();
+            if (!fileName.isEmpty()) {
+                fileName = fileName.substring(0, fileName.lastIndexOf("."));
+            }
+            unzipFilePath = unzipFilePath + File.separator + fileName;
+        }
+        // 创建解压缩文件保存的路径
+        File unzipFileDir = new File(unzipFilePath);
+        if (!unzipFileDir.exists() || !unzipFileDir.isDirectory()) {
+            unzipFileDir.mkdirs();
+        }
+
+        // 开始解压
+        ZipEntry entry = null;
+        String entryFilePath = null, entryDirPath = null;
+        File entryFile = null, entryDir = null;
+        int index = 0, count = 0, bufferSize = 1024;
+        byte[] buffer = new byte[bufferSize];
+        BufferedInputStream bis = null;
+        BufferedOutputStream bos = null;
+        ZipFile zip = new ZipFile(zipFile);
+        Enumeration<ZipEntry> entries = (Enumeration<ZipEntry>) zip.entries();
+        // 循环对压缩包里的每一个文件进行解压
+        while (entries.hasMoreElements()) {
+            entry = entries.nextElement();
+            // 构建压缩包中一个文件解压后保存的文件全路径
+            entryFilePath = unzipFilePath + File.separator + entry.getName();
+            // 构建解压后保存的文件夹路径
+            index = entryFilePath.lastIndexOf(File.separator);
+            if (index != -1) {
+                entryDirPath = entryFilePath.substring(0, index);
+            } else {
+                entryDirPath = "";
+            }
+            entryDir = new File(entryDirPath);
+            // 如果文件夹路径不存在，则创建文件夹
+            if (!entryDir.exists() || !entryDir.isDirectory()) {
+                entryDir.mkdirs();
+            }
+
+            // 创建解压文件
+            entryFile = new File(entryFilePath);
+            if (entryFile.exists()) {
+                // 检测文件是否允许删除，如果不允许删除，将会抛出SecurityException
+                SecurityManager securityManager = new SecurityManager();
+                securityManager.checkDelete(entryFilePath);
+                // 删除已存在的目标文件
+                entryFile.delete();
+            }
+
+            // 写入文件
+            bos = new BufferedOutputStream(new FileOutputStream(entryFile));
+            bis = new BufferedInputStream(zip.getInputStream(entry));
+            while ((count = bis.read(buffer, 0, bufferSize)) != -1) {
+                bos.write(buffer, 0, count);
+            }
+            bos.flush();
+            bos.close();
+        }
+        zip.close();
+    }
+
+//        public static void main(String[] args)   
+//        {  
+//            String zipPath = "d:\\ziptest\\zipPath";  
+//            String dir = "d:\\ziptest\\rawfiles";  
+//            String zipFileName = "test.zip";  
+//            try  
+//            {  
+//                zip(dir, zipPath, zipFileName);  
+//            }   
+//            catch (Exception e)  
+//            {  
+//                e.printStackTrace();  
+//            }  
+//              
+//            String zipFilePath = "D:\\ziptest\\zipPath\\test.zip";  
+//            String unzipFilePath = "D:\\ziptest\\zipPath";  
+//            try   
+//            {  
+//                unzip(zipFilePath, unzipFilePath, true);  
+//            }  
+//            catch (Exception e)  
+//            {  
+//                e.printStackTrace();  
+//            }  
+//        }  
+}
\ No newline at end of file
diff --git a/src/main/java/com/keuin/kbackupfabric/util/ZipUtilException.java b/src/main/java/com/keuin/kbackupfabric/util/ZipUtilException.java
new file mode 100644
index 0000000..85bfec5
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/util/ZipUtilException.java
@@ -0,0 +1,12 @@
+package com.keuin.kbackupfabric.util;
+
+public class ZipUtilException extends Exception {
+    private static final long serialVersionUID = 1L;
+
+    public ZipUtilException() {
+    }
+
+    public ZipUtilException(String gripe) {
+        super(gripe);
+    }
+}
diff --git a/src/main/java/net/fabricmc/example/ExampleMod.java b/src/main/java/net/fabricmc/example/ExampleMod.java
deleted file mode 100644
index e5ed082..0000000
--- a/src/main/java/net/fabricmc/example/ExampleMod.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package net.fabricmc.example;
-
-import net.fabricmc.api.ModInitializer;
-
-public class ExampleMod implements ModInitializer {
-	@Override
-	public void onInitialize() {
-		// This code runs as soon as Minecraft is in a mod-load-ready state.
-		// However, some things (like resources) may still be uninitialized.
-		// Proceed with mild caution.
-
-		System.out.println("Hello Fabric world!");
-	}
-}
diff --git a/src/main/java/net/fabricmc/example/mixin/ExampleMixin.java b/src/main/java/net/fabricmc/example/mixin/ExampleMixin.java
deleted file mode 100644
index 83ee1a8..0000000
--- a/src/main/java/net/fabricmc/example/mixin/ExampleMixin.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package net.fabricmc.example.mixin;
-
-import net.minecraft.client.gui.screen.TitleScreen;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-
-@Mixin(TitleScreen.class)
-public class ExampleMixin {
-	@Inject(at = @At("HEAD"), method = "init()V")
-	private void init(CallbackInfo info) {
-		System.out.println("This line is printed by an example mod mixin!");
-	}
-}
diff --git a/src/main/resources/assets/modid/icon.png b/src/main/resources/assets/kbackupfabric/icon.png
index 047b91f..047b91f 100644
--- a/src/main/resources/assets/modid/icon.png
+++ b/src/main/resources/assets/kbackupfabric/icon.png
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index 197c798..0d471c0 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -1,35 +1,31 @@
 {
   "schemaVersion": 1,
-  "id": "modid",
+  "id": "kbackupfabric",
   "version": "${version}",
-
-  "name": "Example Mod",
-  "description": "This is an example description! Tell everyone what your mod is about!",
+  "name": "KBackup Fabric",
+  "description": "A simple backup mod for Minecraft fabric server",
   "authors": [
-    "Me!"
+    "Keuin"
   ],
   "contact": {
-    "homepage": "https://fabricmc.net/",
-    "sources": "https://github.com/FabricMC/fabric-example-mod"
+    "homepage": "https://lab.keuin.cc/kbackup",
+    "sources": "https://github.com/keuin"
   },
-
-  "license": "CC0-1.0",
-  "icon": "assets/modid/icon.png",
-
+  "license": "GPL V3",
+  "icon": "assets/kbackupfabric/icon.png",
   "environment": "*",
   "entrypoints": {
     "main": [
-      "net.fabricmc.example.ExampleMod"
+      "com.keuin.kbackupfabric.KBPluginInitializer"
     ]
   },
   "mixins": [
-    "modid.mixins.json"
   ],
 
   "depends": {
     "fabricloader": ">=0.7.4",
     "fabric": "*",
-    "minecraft": "1.15.x"
+    "minecraft": "1.14.x"
   },
   "suggests": {
     "flamingo": "*"