device: shell fallback

Author: scivision

+stdlib/private/device_dotnet.m renamed to +stdlib/+dotnet/device.m

@@ -1,5 +1,6 @@
-function i = device_dotnet(path)
+function i = device(path)
 
+i = [];
 
 h = NET.addAssembly('System.Management');
 

+stdlib/+sys/device.m

@@ -0,0 +1,18 @@
+function i = device(p)
+
+
+if ispc()
+  cmd = "powershell -Command (Get-CimInstance -ClassName Win32_Volume -Filter 'DriveLetter = \"" + p(1) + "\"').DeviceID";
+elseif ismac()
+  cmd = "stat -f %d " + p;
+elseif isunix()
+  cmd = "stat -c %d " + p;
+end
+
+
+[s, m] = system(cmd);
+if s == 0
+  i = str2double(m);
+end
+
+end

+stdlib/device.m

@@ -10,18 +10,19 @@
 if stdlib.has_python()
   i = stdlib.python.device(p);
 elseif ispc() && stdlib.has_dotnet()
-  i = device_dotnet(p);
-elseif stdlib.isoctave()
-  [s, err] = stat(p);
-  if err == 0
-    i = s.dev;
-  end
+  i = stdlib.dotnet.device(p);
 elseif isunix() && stdlib.java_api() >= 11
   % Java 1.8 is buggy in some corner cases, so we require at least 11.
   opt = javaMethod("values", "java.nio.file.LinkOption");
   i = java.nio.file.Files.getAttribute(javaPathObject(p), "unix:dev", opt);
 end
 
+if isempty(i)
+  i = stdlib.sys.device(p);
+end
+
+i = uint64(i);
+
 end
 
 %!assert(device(pwd) >= 0);

test/TestDisk.m

@@ -64,8 +64,6 @@ function test_filesystem_type(tc, Ps)
 
 function test_device(tc)
 
-tc.assumeTrue(stdlib.has_python() || (ispc() && stdlib.has_dotnet()) || (isunix() && stdlib.java_api() >= 11))
-
 if ispc()
   tc.verifyGreaterThan(stdlib.device(pwd()), 0)
 else