From a77c03fcaf3eedc84f35d1a38e45701d83a445b0 Mon Sep 17 00:00:00 2001
From: Morilli <35152647+Morilli@users.noreply.github.com>
Date: Tue, 11 Feb 2025 11:03:56 +0100
Subject: [PATCH] add comment and change the same code in new Unpack50

---
 src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.cs          | 2 ++
 .../Compressors/Rar/UnpackV2017/Unpack.unpack50_cpp.cs        | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.cs b/src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.cs
index 732c57e8..c4e6d108 100644
--- a/src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.cs
+++ b/src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.cs
@@ -713,6 +713,8 @@ internal sealed partial class Unpack : BitInput, IRarUnpack, IDisposable
 
     private void UnpWriteData(byte[] data, int offset, int size)
     {
+        // allow destUnpSize == 0 here to ensure that 0 size writes
+        // go through RarStream's Write so that Suspended is set correctly
         if (destUnpSize < 0)
         {
             return;
diff --git a/src/SharpCompress/Compressors/Rar/UnpackV2017/Unpack.unpack50_cpp.cs b/src/SharpCompress/Compressors/Rar/UnpackV2017/Unpack.unpack50_cpp.cs
index 143e3d31..a2e49686 100644
--- a/src/SharpCompress/Compressors/Rar/UnpackV2017/Unpack.unpack50_cpp.cs
+++ b/src/SharpCompress/Compressors/Rar/UnpackV2017/Unpack.unpack50_cpp.cs
@@ -655,7 +655,9 @@ internal partial class Unpack
 
     private void UnpWriteData(byte[] Data, size_t offset, size_t Size)
     {
-        if (WrittenFileSize >= DestUnpSize)
+        // allow WrittenFileSize == DestUnpSize here to ensure that 0 size writes
+        // go through RarStream's Write so that Suspended is set correctly
+        if (WrittenFileSize > DestUnpSize)
         {
             return;
         }