From 943b4fff28c8dbd32ec0a99557d38758068bd93f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D0=BE=D0=BD=D1=8C=D0=BA=D0=B8=D0=BD=20=D0=90=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BA=D1=81=D0=B5=D0=B9?= <yateplofizik@yandex.ru>
Date: Sat, 3 Sep 2022 00:35:14 +0300
Subject: [PATCH] SquashFs lz4 decompression support

---
 NyaFs/Filesystem/SquashFs/Compression/Lz4.cs | 8 ++++++--
 readme.md                                    | 4 ++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/NyaFs/Filesystem/SquashFs/Compression/Lz4.cs b/NyaFs/Filesystem/SquashFs/Compression/Lz4.cs
index 43634c7..652ae08 100644
--- a/NyaFs/Filesystem/SquashFs/Compression/Lz4.cs
+++ b/NyaFs/Filesystem/SquashFs/Compression/Lz4.cs
@@ -1,4 +1,5 @@
 using System;
+using System.IO;
 
 namespace NyaFs.Filesystem.SquashFs.Compression
 {
@@ -40,9 +41,12 @@ internal override byte[] Compress(byte[] data)
             throw new NotImplementedException();
         }
 
-        internal override byte[] Decompress(byte[] data)
+        internal override byte[] Decompress(byte[] Data)
         {
-            throw new NotImplementedException();
+            var Res = new byte[8192];
+
+            FT.LZ4.LZ4Codec.Decode(Data, 0, Data.Length, Res, 0, Res.Length);
+            return Res;
         }
 
         [Flags]
diff --git a/readme.md b/readme.md
index 15cea7c..f01d823 100644
--- a/readme.md
+++ b/readme.md
@@ -12,7 +12,7 @@ There is possible to add or update files in ramfs image.
 Supported at now:
 1. CPIO ASCII (RW)
 2. EXT2 (R)
-3. SquashFs [xz, gzip, lzma compressed] (R)
+3. SquashFs [xz, gzip, lzma, lz4 compressed] (R)
 
 ## Supported compression types
 Supported at now:
@@ -93,7 +93,7 @@ Load fs from ext2 image:
 ```
 load <filename.ext2> ramfs ext2
 ```
-Load fs from squashfs image (xz, gzip, lzma compressed):
+Load fs from squashfs image (xz, gzip, lzma, lz4 compressed):
 ```
 load <filename.ext2> ramfs squashfs
 ```