add get_uid()

Author: scivision

+stdlib/+dotnet/get_uid.m

@@ -0,0 +1,9 @@
+function u = get_uid()
+
+if ispc()
+  u = char(System.Security.Principal.WindowsIdentity.GetCurrent().User.Value);
+else
+  u = '';
+end
+
+end

+stdlib/+perl/get_uid.m

@@ -0,0 +1,15 @@
+function u = get_uid()
+
+u = [];
+if ispc()
+  return
+end
+
+cmd = sprintf('"%s" -e "print $<"', stdlib.perl_exe());
+
+[s, r] = system(cmd);
+if s == 0
+  u = str2double(r);
+end
+
+end

+stdlib/+python/get_uid.m

@@ -0,0 +1,9 @@
+function u = get_uid()
+
+if isunix()
+  u = double(py.os.geteuid());
+else
+  u = [];
+end
+
+end

+stdlib/Backend.m

@@ -59,7 +59,7 @@
       switch functionName
         case {'create_symlink', 'ram_total', 'read_symlink'}
           if stdlib.dotnet_api() < 6, continue, end
-        case {'get_owner', 'is_admin'}
+        case {'get_owner', 'get_uid', 'is_admin'}
           if isunix(), continue, end
       end
     case 'java'
@@ -71,6 +71,11 @@
         case {'device', 'hard_link_count' , 'inode', 'is_admin'}
           if ispc(), continue, end
       end
+    case 'perl'
+      switch functionName
+        case {'get_uid'}
+          if ispc(), continue, end
+      end
     case 'python'
       if ~any(ismember(self.backends, 'python'))
         continue
@@ -79,7 +84,7 @@
       switch functionName
         case {'filesystem_type', 'is_removable', 'ram_total', 'ram_free'}
           if ~stdlib.python.has_psutil(); continue, end
-        case {'cpu_load', 'get_owner'}
+        case {'cpu_load', 'get_owner', 'get_uid'}
           if ispc(), continue, end
         case 'is_admin'
           if ispc() || stdlib.matlabOlderThan('R2024a'), continue, end

+stdlib/get_uid.m

@@ -0,0 +1,17 @@
+%% GET_UID tell UID (numeric) of current user
+%
+%% Outputs
+% * n: UID of current user
+% * b: backend used
+
+function [n, b] = get_uid(backend)
+arguments
+  backend (1,:) string = ["dotnet", "python", "perl"]
+end
+
+o = stdlib.Backend(mfilename(), backend);
+n = o.func();
+
+b = o.backend;
+
+end

test/TestSys.m

@@ -12,10 +12,11 @@
 B_os_version
 B_hostname
 B_username
+B_get_uid
 end
 
 methods (TestParameterDefinition, Static)
-function [B_cpu_arch, B_cpu_load, B_ram_free, B_ram_total, B_is_admin, B_os_version, B_hostname, B_username] = setupBackends()
+function [B_cpu_arch, B_cpu_load, B_ram_free, B_ram_total, B_is_admin, B_os_version, B_hostname, B_username, B_get_uid] = setupBackends()
 B_cpu_arch = init_backend("cpu_arch");
 B_cpu_load = init_backend("cpu_load");
 B_ram_free = init_backend("ram_free");
@@ -24,6 +25,7 @@
 B_os_version = init_backend("os_version");
 B_hostname = init_backend("hostname");
 B_username = init_backend("get_username");
+B_get_uid = init_backend('get_uid');
 end
 end
 
@@ -69,6 +71,17 @@ function test_hostname(tc, B_hostname)
 end
 
 
+function test_get_uid(tc, B_get_uid)
+u = stdlib.get_uid(B_get_uid);
+if ispc()
+  tc.verifyClass(u, 'char')
+  tc.verifyGreaterThan(strlength(u), 0)
+else
+  tc.verifyNotEmpty(u)
+end
+end
+
+
 function test_username(tc, B_username)
 u = stdlib.get_username(B_username);
 tc.verifyClass(u, 'char')