shell fallback get_owner

shell fallback filesystem_type

Author: scivision

+stdlib/+python/get_owner.m

@@ -1,5 +1,10 @@
 function n = get_owner(p)
 
-n = string(py.str(py.pathlib.Path(p).owner()));
+try
+  n = string(py.str(py.pathlib.Path(p).owner()));
+catch e
+  warning(e.identifier, "get_owner(%s) failed: %s", p, e.message);
+  n = string.empty;
+end
 
 end

+stdlib/+sys/device.m

@@ -4,7 +4,7 @@
 
 if ispc()
   c0 = 'powershell -Command "(Get-CimInstance -ClassName Win32_Volume -Filter \"DriveLetter = ''';
-  c1 = stdlib.root_name(stdlib.resolve(p));
+  c1 = stdlib.root_name(stdlib.absolute(p));
   c2 = '''\").SerialNumber"';
   cmd = strcat(c0, c1, c2);
 elseif ismac()

+stdlib/+sys/filesystem_type.m

@@ -0,0 +1,19 @@
+function t = filesystem_type(p)
+
+if ispc()
+  dl = extractBefore(stdlib.absolute(p), 2);
+  cmd = "pwsh -c (Get-Volume -DriveLetter " + dl + ").FileSystem";
+elseif ismac()
+  cmd = "df -aHY " + p + " | awk 'NR==2 {print $2}'";
+else
+  cmd = "df -T " + p + " | awk 'NR==2 {print $2}'";
+end
+
+[s, t] = system(cmd);
+if s == 0
+  t = strip(t);
+else
+  t = "";
+end
+
+end

+stdlib/+sys/get_owner.m

@@ -0,0 +1,18 @@
+function o = get_owner(p)
+
+if ispc()
+  cmd = "pwsh -c (Get-Acl -Path '" + p + "').Owner";
+elseif ismac()
+  cmd = "stat -f %Su " + p;
+else
+  cmd = "stat -c %U " + p;
+end
+
+[s, o] = system(cmd);
+if s == 0
+  o = strip(o);
+else
+  o = string.empty;
+end
+
+end

+stdlib/filesystem_type.m

@@ -3,9 +3,7 @@
 % example outputs: NTFS, ext4, apfs, ...
 
 function t = filesystem_type(p)
-arguments
-  p {mustBeTextScalar}
-end
+
 
 t = "";
 if ~stdlib.exists(p), return, end
@@ -17,6 +15,10 @@
   t = javaMethod("getFileStore", "java.nio.file.Files", javaPathObject(p)).type;
 end
 
+if strempty(p)
+  t = stdlib.sys.filesystem_type(p);
+end
+
 try  %#ok<*TRYNC>
   t = string(t);
 end

+stdlib/get_owner.m

@@ -10,6 +10,7 @@
   p {mustBeTextScalar}
 end
 
+n = string.empty;
 
 if ~ispc() && stdlib.has_python()
   n = stdlib.python.get_owner(p);
@@ -28,6 +29,10 @@
 
 end
 
+if strempty(n)
+  n = stdlib.sys.get_owner(p);
+end
+
 end
 
 %!assert(!isempty(get_owner(pwd)))

test/TestDisk.m

@@ -48,8 +48,6 @@ function test_hard_link_count(tc)
 
 function test_filesystem_type(tc, Ps)
 
-tc.assumeTrue(stdlib.has_dotnet() || stdlib.has_java())
-
 s = stdlib.filesystem_type(Ps);
 tc.verifyClass(s, 'string')
 L = strlength(s);
@@ -73,14 +71,12 @@ function test_device(tc)
 
 
 function test_inode(tc)
-tc.assumeTrue(stdlib.has_python() || (isunix() && stdlib.java_api() >= 11))
 
 tc.verifyEqual(stdlib.inode("."), stdlib.inode(pwd()))
 end
 
 
 function test_owner(tc)
-tc.assumeTrue((~ispc() && stdlib.has_python()) || stdlib.has_java())
 
 s = stdlib.get_owner(".");