improved comments and formatting

src/main/java/net/szum123321/textile_backup/Globals.java

@@ -51,6 +51,8 @@ public class Globals {
     private AwaitThread restoreAwaitThread = null;
     private Path lockedPath = null;
 
+    private String combinedVersionString;
+
     private Globals() {}
 
     public ExecutorService getQueueExecutor() { return executorService; }
@@ -107,4 +109,12 @@ public class Globals {
 
         if(disableTMPFiles) log.error("Might cause: https://github.com/Szum123321/textile_backup/wiki/ZIP-Problems");
     }
+
+    public String getCombinedVersionString() {
+        return combinedVersionString;
+    }
+
+    public void setCombinedVersionString(String combinedVersionString) {
+        this.combinedVersionString = combinedVersionString;
+    }
 }

src/main/java/net/szum123321/textile_backup/core/create/InputSupplier.java

@@ -25,10 +25,9 @@ import java.io.InputStream;
 import java.nio.file.Path;
 import java.util.Optional;
 
-
 public interface InputSupplier extends InputStreamSupplier {
     InputStream getInputStream() throws IOException;
-    //If an entry is virtual (a.k.a there is no actual file to open, only input stream)
+    //If an entry is virtual (a.k.a. there is no actual file to open, only input stream)
     Optional<Path> getPath();
     String getName();
 

src/main/java/net/szum123321/textile_backup/core/create/compressors/AbstractCompressor.java

@@ -40,7 +40,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Stream;
 
 /**
- * Basic abstract class representing directory compressor
+ * Basic abstract class representing directory compressor with all the bells and whistles
  */
 public abstract class AbstractCompressor {
     private final static TextileLogger log = new TextileLogger(TextileBackup.MOD_NAME);
@@ -49,14 +49,14 @@ public abstract class AbstractCompressor {
         Instant start = Instant.now();
 
         FileTreeHashBuilder fileHashBuilder = new FileTreeHashBuilder();
-        BrokenFileHandler brokenFileHandler = new BrokenFileHandler();
+        BrokenFileHandler brokenFileHandler = new BrokenFileHandler(); //Basically a hashmap storing files and their respective exceptions
 
         try (OutputStream outStream = Files.newOutputStream(outputFile);
              BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(outStream);
              OutputStream arc = createArchiveOutputStream(bufferedOutputStream, ctx, coreLimit);
              Stream<Path> fileStream = Files.walk(inputFile)) {
 
-            AtomicInteger fileCounter = new AtomicInteger(0);
+            AtomicInteger fileCounter = new AtomicInteger(0); //number of files to compress
 
             var it = fileStream
                     .filter(path -> !Utilities.isBlacklisted(inputFile.relativize(path)))
@@ -66,6 +66,7 @@ public abstract class AbstractCompressor {
 
             log.info("File count: {}", fileCounter.get());
 
+            //will be used in conjunction with ParallelZip to avoid race condition
             CountDownLatch latch = new CountDownLatch(fileCounter.get());
 
             while(it.hasNext()) {
@@ -83,6 +84,7 @@ public abstract class AbstractCompressor {
                     );
                 } catch (IOException e) {
                     brokenFileHandler.handle(file, e);
+                    //In Permissive mode we allow partial backups
                     if(ConfigHelper.INSTANCE.get().errorErrorHandlingMode.isStrict()) throw e;
                     else log.sendErrorAL(ctx, "An exception occurred while trying to compress: {}",
                             inputFile.relativize(file).toString(), e
@@ -90,6 +92,7 @@ public abstract class AbstractCompressor {
                 }
             }
 
+            //wait for all the InputStreams to close/fail with InputSupplier
             latch.await();
 
             Instant now = Instant.now();

src/main/java/net/szum123321/textile_backup/core/create/compressors/tar/AbstractTarArchiver.java

@@ -45,7 +45,7 @@ public class AbstractTarArchiver extends AbstractCompressor {
     protected void addEntry(InputSupplier input, OutputStream arc) throws IOException {
         try (InputStream fileInputStream = input.getInputStream()) {
             TarArchiveEntry entry;
-            if(input.getPath().isEmpty()) {//Virtual entry
+            if(input.getPath().isEmpty()) { //Virtual entry
                 entry = new TarArchiveEntry(input.getName());
                 entry.setSize(input.size());
             } else

src/main/java/net/szum123321/textile_backup/core/digest/BalticHash.java

@@ -22,16 +22,15 @@ import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.Arrays;
 
-/*
-    This algorithm copies construction of SeaHash (https://ticki.github.io/blog/seahash-explained/) including its IV
-    What it differs in is that it uses Xoroshift64* instead of PCG. Although it might lower the output quality,
-    I don't think it matters that much, honestly. One advantage the xoroshift has is that it should be
-    easier to implement with AVX. Java should soon ship its vector api by default.
+/**
+ * This algorithm copies construction of <a href="https://ticki.github.io/blog/seahash-explained/">SeaHash</a> including its IV.
+ * What it differs in is that it uses Xoroshift64* instead of PCG as its pseudo-random function. Although it might lower
+ * the output quality, I don't think it matters that much, honestly. One advantage of xoroshift is that it should be
+ * easier to implement with AVX. Java should soon ship its vector api by default.
  */
 public class BalticHash implements Hash {
-    protected final static long[] IV = { 0x16f11fe89b0d677cL, 0xb480a793d8e6c86cL, 0x6fe2e5aaf078ebc9L, 0x14f994a4c5259381L};
-
     //SeaHash IV
+    protected final static long[] IV = { 0x16f11fe89b0d677cL, 0xb480a793d8e6c86cL, 0x6fe2e5aaf078ebc9L, 0x14f994a4c5259381L };
     private final long[] state = Arrays.copyOf(IV, IV.length);
     protected final int buffer_limit = state.length * Long.BYTES;
     protected final byte[] _byte_buffer = new byte[(state.length + 1) * Long.BYTES];

src/main/java/net/szum123321/textile_backup/core/digest/BalticHashSIMD.java

@@ -22,16 +22,16 @@ package net.szum123321.textile_backup.core.digest;
 
 import net.szum123321.textile_backup.core.digest.BalticHash;
 
-/*Mostly working XorSeaHash impl using SIMD. Should speed up calculation on most systems currently in use
+/**
+ * Mostly working XorSeaHash impl using SIMD. Should speed up calculation on most systems currently in use
 
-It's actually slower. I tested it by comparing runtimes while hashing a directly opened FileInputStream.
-My cpu is AMD Ryzen 5 3500U
+ <br>...<br>
 
-There are two reasons I can think of: either vector construction simply takes so much time or jvm auto-vectorizes better than me
-
-It's still probably far from being the slowest part of code, so I don't expect any major slowdowns
-
-I will keep this code here for future work perhaps
+ * It's actually slower. I tested it by comparing runtimes while hashing a directly opened FileInputStream.
+ * My cpu is AMD Ryzen 5 3500U
+ * There are two reasons I can think of: either vector construction simply takes so much time or jvm auto-vectorizes better than I.
+ * It's still probably far from being the slowest part of code, so I don't expect any major slowdowns
+ * I will keep this code here for future work perhaps
  */
 public class BalticHashSIMD extends BalticHash {/*
     public BalticHashSIMD() { throw new UnsupportedOperationException(); } //For safety

src/main/java/net/szum123321/textile_backup/core/digest/FileTreeHashBuilder.java

@@ -29,6 +29,10 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+/**
+ * What this class does is it collects the hashed files and combines them into a single number,
+ * thus we can verify file tree integrity
+ */
 public class FileTreeHashBuilder {
     private final static TextileLogger log = new TextileLogger(TextileBackup.MOD_NAME);
     private final Object lock = new Object();

src/main/java/net/szum123321/textile_backup/core/digest/Hash.java

@@ -21,13 +21,12 @@ package net.szum123321.textile_backup.core.digest;
 public interface Hash {
     void update(byte b);
 
-    default void update(int b) {
-        update((byte)b);
-    }
+    default void update(int b) { update((byte)b); }
+
     void update(long b);
-    default void update(byte[] b) {
-        update(b, 0, b.length);
-    }
+
+    default void update(byte[] b) { update(b, 0, b.length); }
+
     void update(byte[] b, int off, int len);
 
     long getValue();

src/main/java/net/szum123321/textile_backup/core/digest/HashingInputStream.java

@@ -27,8 +27,14 @@ import java.io.*;
 import java.nio.file.Path;
 import java.util.concurrent.CountDownLatch;
 
-//This class calculates a hash of the file on the input stream, submits it to FileTreeHashBuilder.
-//In case the underlying stream hasn't been read completely in, puts it into BrokeFileHandler
+/**
+ * This class calculates a hash of the file on the input stream, submits it to FileTreeHashBuilder.
+ * In case the underlying stream hasn't been read completely in, puts it into BrokeFileHandler
+
+ * Futhermore, ParallelZip works by putting al the file requests into a queue and then compressing them
+ * with multiple threads. Thus, we have to make sure that all the files have been read before requesting the final value
+ * That is what CountDownLatch does
+ */
 public class HashingInputStream extends FilterInputStream {
     private final Path path;
     private final Hash hasher = Globals.CHECKSUM_SUPPLIER.get();
@@ -36,7 +42,6 @@ public class HashingInputStream extends FilterInputStream {
     private final BrokenFileHandler brokenFileHandler;
     private final CountDownLatch latch;
 
-
     public HashingInputStream(InputStream in, Path path, FileTreeHashBuilder hashBuilder, BrokenFileHandler brokenFileHandler, CountDownLatch latch) {
         super(in);
         this.path = path;

src/main/java/net/szum123321/textile_backup/core/restore/RestoreBackupRunnable.java

@@ -37,6 +37,9 @@ import java.nio.file.Path;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.FutureTask;
 
+/**
+ * This class restores a file provided by RestoreContext.
+ */
 public class RestoreBackupRunnable implements Runnable {
     private final static TextileLogger log = new TextileLogger(TextileBackup.MOD_NAME);
     private final static ConfigHelper config = ConfigHelper.INSTANCE;