symlink: use new internal functions if available

Author: scivision

+stdlib/+fileio/create_symlink.m

@@ -7,6 +7,7 @@
   link (1,1) string
 end
 
+if isMATLABReleaseOlderThan("R2024b")
 % import java.io.File
 % import java.nio.file.Files
 % ok = Files.createSymbolicLink(File(link).toPath(), File(target).toPath());
@@ -18,7 +19,8 @@
 end
 
 if ispc
-  cmd = "pwsh -c " + '"' + "New-Item -ItemType SymbolicLink -Path " + link + " -Target " + target + '"';
+  cmd = "pwsh -c " + '"' + "New-Item -ItemType SymbolicLink -Path " + link + ...
+        " -Target " + target + '"';
 else
   cmd = "ln -s " + target + " " + link;
 end
@@ -28,4 +30,15 @@
 
 ok = stat == 0;
 
+else
+
+  try
+    createSymbolicLink(link, target);
+    ok = true;
+  catch
+    ok = false;
+  end
+
+end
+
 end

+stdlib/+fileio/is_symlink.m

@@ -6,11 +6,11 @@
   p (1,1) string
 end
 
-import java.io.File
-import java.nio.file.Files
-
-% must be absolute path
-f = File(stdlib.fileio.absolute_path(p)).toPath();
-ok = Files.isSymbolicLink(f);
+if isMATLABReleaseOlderThan("R2024b")
+  % must be absolute path
+  ok = java.nio.file.Files.isSymbolicLink(java.io.File(stdlib.fileio.absolute_path(p)).toPath());
+else
+  ok = isSymbolicLink(p);
+end
 
 end