is_removable: add dotnet

Author: scivision

+stdlib/+dotnet/is_removable.m

@@ -0,0 +1,15 @@
+%% DOTNET.IS_REMOVEABLE detect removable drive
+%
+% Ref: https://learn.microsoft.com/en-us/dotnet/api/system.io.drivetype
+
+function y = is_removable(filepath)
+
+if stdlib.exists(filepath)
+  fmt = System.IO.DriveInfo(stdlib.absolute(filepath)).DriveType;
+  y = any(isequal(fmt, {System.IO.DriveType.Removable, ...
+                        System.IO.DriveType.CDRom}));
+else
+  y = false;
+end
+
+end

+stdlib/+sys/is_removable.m

@@ -0,0 +1,38 @@
+function y = is_removable(filepath)
+
+y = false;
+
+if ispc()
+  drive = stdlib.root_name(filepath);
+  cmd1 = strcat('wmic logicaldisk where "DeviceID=''', drive, '''" get DriveType');
+else
+  cmd1 = "df " + filepath + " | tail -n 1 | awk '{print $1}'";
+end
+[s1, m1] = system(cmd1);
+if s1 ~= 0
+  return
+end
+
+
+if ispc()
+
+  y = any(ismember(strtrim(extractAfter(m1, "DriveType")), ["2", "5"]));
+  % https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-logicaldisk
+
+elseif ismac()
+
+  cmd2 = ['diskutil info ', m1];
+  [s2, m2] = system(cmd2);
+  y = s2 == 0 && contains(m2, "Removable Media:" + whitespacePattern + "Removable");
+
+else
+
+  dev = strtrim(extractAfter(m1, '/dev/'));
+  f1 = strcat('/sys/class/block/', dev, '/removable');
+  if isfile(f1)
+    y = strtrim(fileread(f1)) == "1";
+  end
+
+end
+
+end

+stdlib/is_removable.m

@@ -1,41 +1,14 @@
 %% IS_REMOVABLE - Check if a file path is on a removable drive
 % Not necessarily perfectly reliable at detection, but works for most cases.
 
-function y  = is_removable(filepath)
-
-y = false;
-
-if ispc()
-  drive = stdlib.root_name(filepath);
-  cmd1 = strcat('wmic logicaldisk where "DeviceID=''', drive, '''" get DriveType');
-else
-  cmd1 = "df " + filepath + " | tail -n 1 | awk '{print $1}'";
-end
-[s1, m1] = system(cmd1);
-if s1 ~= 0
-  return
+function y  = is_removable(filepath, method)
+arguments
+  filepath {mustBeTextScalar}
+  method (1,:) string = ["dotnet", "sys"]
 end
 
+fun = choose_method(method, "is_removable");
 
-if ispc()
-
-  y = any(ismember(strtrim(extractAfter(m1, "DriveType")), ["2", "5"]));
-  % https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-logicaldisk
-
-elseif ismac()
-
-  cmd2 = ['diskutil info ', m1];
-  [s2, m2] = system(cmd2);
-  y = s2 == 0 && contains(m2, "Removable Media:" + whitespacePattern + "Removable");
-
-else
-
-  dev = strtrim(extractAfter(m1, '/dev/'));
-  f1 = strcat('/sys/class/block/', dev, '/removable');
-  if isfile(f1)
-    y = strtrim(fileread(f1)) == "1";
-  end
-
-end
+y = fun(filepath);
 
 end

test/TestDisk.m

@@ -13,6 +13,7 @@
 disk_ac_name = {'disk_available', 'disk_capacity'}
 hl_fun = {'java', 'python'}
 fst_fun = {'sys', 'dotnet', 'java', 'python'}
+is_remove = {'dotnet', 'sys'}
 end
 
 methods(TestClassSetup)
@@ -42,11 +43,14 @@ function test_disk_ac(tc, Ps, disk_ac_fun, disk_ac_name)
 end
 
 
-function test_is_removable(tc)
+function test_is_removable(tc, is_remove)
+try
+  y = stdlib.is_removable(pwd(), is_remove);
+catch e
+  tc.verifyEqual(e.identifier, 'stdlib:choose_method:NameError', e.message)
+end
 
-y = stdlib.is_removable(pwd());
 tc.verifyClass(y, 'logical')
-
 end