1 files changed, 92 insertions, 0 deletions
diff --git a/src/main/java/com/keuin/kbackupfabric/backup/BackupFilesystemUtil.java b/src/main/java/com/keuin/kbackupfabric/backup/BackupFilesystemUtil.java
new file mode 100644
index 0000000..49fe6a0
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+++ b/src/main/java/com/keuin/kbackupfabric/backup/BackupFilesystemUtil.java
@@ -0,0 +1,92 @@
+package com.keuin.kbackupfabric.backup;
+
+import com.keuin.kbackupfabric.util.ReflectionUtils;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.dedicated.MinecraftDedicatedServer;
+import net.minecraft.server.world.ThreadedAnvilChunkStorage;
+import net.minecraft.world.World;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.logging.Logger;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Functions deal with file name, directory name about Minecraft saves.
+ */
+public final class BackupFilesystemUtil {
+
+    private static final String BACKUP_SAVE_DIRECTORY_NAME = "backups";
+    private static final String INCREMENTAL_BASE_DIRECTORY_NAME = "incremental";
+    private static final String backupFileNamePrefix = "kbackup-";
+
+    @Deprecated
+    public static String getBackupFileNamePrefix() {
+        return backupFileNamePrefix;
+    }
+
+
+//    @Deprecated
+//    public static String getBackupName(String backupFileName) {
+//        try {
+//            if (backupFileName.matches(backupFileNamePrefix + ".+\\.zip"))
+//                return backupFileName.substring(backupFileNamePrefix.length(), backupFileName.length() - 4);
+//        } catch (IndexOutOfBoundsException ignored) {
+//        }
+//        return backupFileName;
+//    }
+
+    public static boolean isBackupFileExists(String backupFileName, MinecraftServer server) {
+        File backupFile = new File(getBackupSaveDirectory(server), backupFileName);
+        return backupFile.isFile();
+    }
+
+    public static File getBackupSaveDirectory(MinecraftServer server) {
+        return new File(server.getRunDirectory(), BACKUP_SAVE_DIRECTORY_NAME);
+    }
+
+    public static File getIncrementalBackupBaseDirectory(MinecraftServer server) {
+        return new File(server.getRunDirectory(), INCREMENTAL_BASE_DIRECTORY_NAME);
+    }
+
+    public static String getLevelPath(MinecraftServer server) throws IOException {
+        if (!(server instanceof MinecraftDedicatedServer))
+            throw new IllegalStateException("This plugin is server-side only.");
+        String path = (new File(server.getRunDirectory().getCanonicalPath(), ((MinecraftDedicatedServer) server).getLevelName())).getAbsolutePath();
+        Logger.getLogger("getLevelPath").info(String.format("Level path: %s", path));
+        assert (new File(path)).exists();
+        return path;
+    }
+
+    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();
+    }
+
+    @Deprecated
+    public static long getBackupTimeFromBackupFileName(String backupFileName) {
+        Matcher matcher = Pattern.compile("[0-9]{4}-[0-9]{2}-[0-9]{2}_[0-9]{2}-[0-9]{2}-[0-9]{2}").matcher(backupFileName);
+        if (matcher.find()) {
+            String timeString = matcher.group(0);
+            long timeStamp = BackupNameTimeFormatter.timeStringToEpochSeconds(timeString);
+            System.out.println(backupFileName + " -> " + timeStamp);
+            return timeStamp;
+        } else {
+            System.err.println("Failed to extract time from " + backupFileName);
+        }
+        return -1;
+    }
+
+    public static String getFriendlyFileSizeString(long sizeBytes) {
+        double fileSize = sizeBytes * 1.0 / 1024 / 1024; // Default unit is MB
+        if (fileSize > 1000)
+            //msgInfo(context, String.format("File size: %.2fGB", fileSize / 1024));
+            return String.format("%.2fGB", fileSize / 1024);
+        else
+            //msgInfo(context, String.format("File size: %.2fMB", fileSize));
+            return String.format("%.2fMB", fileSize);
+    }
+}