From e70d40953b875a6bc8588b0ab0b964aea70ce301 Mon Sep 17 00:00:00 2001
From: Naman <namanrkbansal@gmail.com>
Date: Wed, 7 Oct 2026 07:50:05 +0530
Subject: [PATCH 1/4] Fix decompression CLI format detection

---
 src/snappy/__main__.py |  3 +--
 test_formats.py        | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/snappy/__main__.py b/src/snappy/__main__.py
index 07c95f7..507da48 100644
--- a/src/snappy/__main__.py
+++ b/src/snappy/__main__.py
@@ -76,13 +76,12 @@ def cmdline_main():
         method = formats.get_compress_function(args.target_format)
     else:
         try:
-            method, read_chunk = formats.get_decompress_function(
+            method = formats.get_decompress_function(
                 args.target_format,
                 args.infile
             )
         except UncompressError as err:
             sys.exit("Failed to get decompress function: {}".format(err))
-        additional_args['start_chunk'] = read_chunk
 
     method(args.infile, args.outfile, **additional_args)
 
diff --git a/test_formats.py b/test_formats.py
index 6453b1e..66615b7 100644
--- a/test_formats.py
+++ b/test_formats.py
@@ -71,6 +71,26 @@ class TestFormatRawAuto(TestFormatBase):
     decompress_format = "auto"
     success = True
 
+class TestDecompressFunction(TestCase):
+    def test_auto_returns_function(self):
+        data = b"hello world"
+
+        compressed = io.BytesIO()
+        formats.get_compress_function("auto")(
+            io.BytesIO(data),
+            compressed
+        )
+        compressed.seek(0)
+
+        decompress_func = formats.get_decompress_function(
+            "auto",
+            compressed
+        )
+
+        decompressed = io.BytesIO()
+        decompress_func(compressed, decompressed)
+
+        self.assertEqual(data, decompressed.getvalue())
 
 if __name__ == "__main__":
     import unittest

From 34045beed0314801addf3fe72960f28ed60ea243 Mon Sep 17 00:00:00 2001
From: Naman <namanrkbansal@gmail.com>
Date: Wed, 7 Oct 2026 07:56:47 +0530
Subject: [PATCH 2/4] Add CLI decompression regression test

---
 test_formats.py | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/test_formats.py b/test_formats.py
index 66615b7..3e65a38 100644
--- a/test_formats.py
+++ b/test_formats.py
@@ -1,7 +1,9 @@
 import io
 import os
 from unittest import TestCase
-
+import subprocess
+import sys
+import tempfile
 from snappy import snappy_formats as formats
 
 
@@ -92,6 +94,38 @@ def test_auto_returns_function(self):
 
         self.assertEqual(data, decompressed.getvalue())
 
+    def test_cli_decompress(self):
+        data = b"hello world"
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            compressed = os.path.join(tmpdir, "input.snappy")
+            output = os.path.join(tmpdir, "output.txt")
+
+            with open(compressed, "wb") as f:
+                formats.get_compress_function("auto")(
+                    io.BytesIO(data),
+                    f
+                )
+
+            result = subprocess.run(
+                [
+                    sys.executable,
+                    "-m",
+                    "snappy",
+                    "-d",
+                    compressed,
+                    output,
+                ],
+                capture_output=True,
+                text=True,
+            )
+
+            self.assertEqual(result.returncode, 0)
+
+            with open(output, "rb") as f:
+                self.assertEqual(data, f.read())
+
+
 if __name__ == "__main__":
     import unittest
     unittest.main()

From 2288061b79a85bc30b43f6317057934648d3d34b Mon Sep 17 00:00:00 2001
From: Naman <namanrkbansal@gmail.com>
Date: Thu, 8 Oct 2026 10:59:24 +0530
Subject: [PATCH 3/4] Fix sdist filename in CI workflow

---
 .github/workflows/wheel.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/wheel.yml b/.github/workflows/wheel.yml
index f36ea56..b217c4e 100644
--- a/.github/workflows/wheel.yml
+++ b/.github/workflows/wheel.yml
@@ -35,7 +35,7 @@ jobs:
         run: python setup.py sdist
 
       - name: Install python-snappy sdist
-        run: pip install dist/python-snappy*.tar.gz
+        run: pip install dist/python_snappy*.tar.gz
 
       - name: Pytest
         run: pytest --verbose test_snappy.py
@@ -44,7 +44,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: wheels
-          path: dist/python-snappy*.tar.gz
+          path: dist/python_snappy*.tar.gz
 
   build:
     runs-on: ${{ matrix.os }}

From f84ebdea866be0e309f54ed82109c0ca7754f295 Mon Sep 17 00:00:00 2001
From: Naman <namanrkbansal@gmail.com>
Date: Sat, 10 Oct 2026 06:27:15 +0530
Subject: [PATCH 4/4] Update deprecated GitHub Actions runners

---
 .github/workflows/wheel.yml | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/wheel.yml b/.github/workflows/wheel.yml
index b217c4e..2cf7eff 100644
--- a/.github/workflows/wheel.yml
+++ b/.github/workflows/wheel.yml
@@ -51,19 +51,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-12, windows-2019]
+        os: [ubuntu-22.04, macos-14, windows-2022]
         architecture: ["x64"]
         linux_archs: ["auto s390x"]
         include:
-          - os: windows-2019
+          - os: windows-2022
             architecture: "x86"
             skip: "*2*win* *win_amd64"
             environment_windows: INCLUDE="C:/Program Files (x86)/Snappy/include" LIB="C:/Program Files (x86)/Snappy/lib"
-          - os: windows-2019
+          - os: windows-2022
             architecture: "x64"
             skip: "*2*win* *win32"
             environment_windows: INCLUDE="C:/Program Files/Snappy/include" LIB="C:/Program Files/Snappy/lib"
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             architecture: "x64"
             linux_archs: aarch64 ppc64le