add windows support

ar/archive.py

@@ -75,7 +75,7 @@ def open(self, path: Union[str, ArPath], mode='r', encoding='utf-8'):
 
 def lookup(data: bytes, offset: int) -> str:
     start = offset
-    end = data.index(b"\n", start)
+    end = data.find(b"\00", start)
     return data[start:end - 1].decode()
 
 

ar/tests/test_windows.py

@@ -0,0 +1,52 @@
+# pylint: disable=redefined-outer-name
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from ar import Archive, ArchiveError
+
+
+ARCHIVE = Path('test_data/MiniLib.lib')
+
+
+def test_list():
+    with ARCHIVE.open('rb') as f:
+        archive = Archive(f)
+        expected = ['x64\\Release\\pch.ob', 'x64\\Release\\MiniLib.ob']
+        actual = [entry.name for entry in archive]
+        assert actual == expected
+
+
+def test_read_binary():
+    with ARCHIVE.open('rb') as f:
+        archive = Archive(f)
+        file0 = archive.open('x64\\Release\\MiniLib.ob', 'rb')
+        assert file0.read(16) == b'\x00\x00\xff\xff\x01\x00d\x86tF\xaee8\xfe\xb3\x0c'
+
+
+def test_seek_basic():
+    with ARCHIVE.open('rb') as f:
+        archive = Archive(f)
+        file0 = archive.open('x64\\Release\\MiniLib.ob', 'rb')
+        file0.seek(1)
+        assert file0.read(3) == b'\x00\xff\xff'
+
+
+def test_tell():
+    with ARCHIVE.open('rb') as f:
+        archive = Archive(f)
+        file0 = archive.open('x64\\Release\\MiniLib.ob', 'rb')
+        assert file0.tell() == 0
+        file0.read(2)
+        assert file0.tell() == 2
+        file0.read()
+        assert file0.tell() == 1887
+
+
+def test_open_missing_path():
+    with ARCHIVE.open('rb') as f:
+        archive = Archive(f)
+        with pytest.raises(ArchiveError) as exception_info:
+            archive.open('missing')
+        assert str(exception_info.value) == "No such entry: missing"