is_admin: optional python

Author: scivision

+stdlib/is_admin.m

@@ -4,7 +4,18 @@
 function y = is_admin()
 
 
-if stdlib.isoctave()
+if stdlib.has_python()
+  if isunix()
+    y = py.os.getuid() == 0;
+  else
+    shell32 = py.ctypes.WinDLL('shell32');
+
+    % this is a key step vs. simply py.ctypes.windll.shell32.IsUserAnAdmin()
+    f = py.getattr(shell32, 'IsUserAnAdmin');
+
+    y = logical(f());
+  end
+elseif stdlib.isoctave()
   y = getuid() == 0;
 elseif ispc() && stdlib.has_dotnet()
   % com.sun.security.auth.module.NTSystem().getGroupIDs();

buildfile.m

@@ -262,14 +262,17 @@ function build_exe(context)
 
 srcs = {
 "src/remove.cpp", ...
-["src/is_admin.cpp", "src/admin_fs.cpp"] ...
-"src/is_char_device.cpp", ...
 ["src/normalize.cpp", normal], ...
 "src/disk_available.cpp", ...
 "src/disk_capacity.cpp", ...
 "src/set_permissions.cpp", ...
 };
 
+if ~stdlib.has_python() || build_all
+srcs{end+1} = "src/is_char_device.cpp";
+srcs{end+1} = ["src/is_admin.cpp", "src/admin_fs.cpp"];
+end
+
 if (isMATLABReleaseOlderThan("R2024b") && ~stdlib.has_dotnet()) || build_all
 srcs{end+1} = ["src/is_symlink.cpp", win, sym];
 end