Fix Windows Unicode encoding issue [skip ci]

Author: BeckettFrey

.github/workflows/ci.yml

@@ -5,14 +5,21 @@ on:
     branches: [main]
   pull_request:
     branches: [main]
+  workflow_dispatch:
+    inputs:
+      run_windows:
+        description: 'Run Windows tests'
+        required: false
+        default: false
+        type: boolean
 
 jobs:
   test:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-latest]
         python-version: ["3.10", "3.11", "3.12"]
 
     steps:
@@ -39,6 +46,31 @@ jobs:
           files: ./coverage.xml
           fail_ci_if_error: false
 
+  test-windows:
+    if: github.event_name == 'workflow_dispatch' && inputs.run_windows
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.10", "3.11", "3.12"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[dev]"
+
+      - name: Run tests
+        run: |
+          pytest -v
+
   lint:
     runs-on: ubuntu-latest
     steps:

src/shredguard/output.py

@@ -49,15 +49,16 @@ def supports_unicode() -> bool:
     if os.environ.get("FORCE_ASCII"):
         return False
 
-    if sys.platform == "win32":
-        # Check if the console is using UTF-8 (code page 65001)
-        try:
-            import ctypes
-
-            return ctypes.windll.kernel32.GetConsoleOutputCP() == 65001
-        except Exception:
-            return False
-    return True
+    if os.environ.get("FORCE_UNICODE"):
+        return True
+
+    # Check stdout encoding - this is the most reliable way to determine
+    # if Unicode characters can be written without encoding errors
+    encoding = getattr(sys.stdout, "encoding", None) or ""
+    encoding = encoding.lower().replace("-", "").replace("_", "")
+
+    # Only allow Unicode if we have a Unicode-capable encoding
+    return encoding in ("utf8", "utf16", "utf32")
 
 
 class Formatter: