project: add os.py

1 files changed, 36 insertions, 0 deletions

diff --git a/project/os.py b/project/os.py
new file mode 100644
index 0000000..86ccaad
--- /dev/null
+++ b/project/os.py
@@ -0,0 +1,36 @@
+# Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
+# This file is part of the "cmake-common" project.
+# For details, see https://github.com/egor-tensin/cmake-common.
+# Distributed under the MIT License.
+
+from enum import Enum
+import platform
+
+
+class OS(Enum):
+    WINDOWS = 'Windows'
+    LINUX = 'Linux'
+    CYGWIN = 'Cygwin'
+
+    def __str__(self):
+        return self.value
+
+    @staticmethod
+    def current():
+        system = platform.system()
+        if system == 'Windows':
+            return OS.WINDOWS
+        if system == 'Linux':
+            return OS.LINUX
+        if system.startswith('CYGWIN_NT'):
+            return OS.CYGWIN
+        raise NotImplementedError(f'unsupported OS: {system}')
+
+
+def on_windows():
+    return OS.current() is OS.WINDOWS
+
+
+def on_linux_like():
+    os = OS.current()
+    return os is OS.LINUX or os is OS.CYGWIN