is_symlink: more fallback

Author: scivision

+stdlib/disk_capacity.m

@@ -1,5 +1,4 @@
 %% DISK_CAPACITY disk total capacity (bytes)
-% optional: mex
 %
 % example:  stdlib.disk_capacity('/')
 

+stdlib/is_symlink.m

@@ -1,5 +1,4 @@
 %% IS_SYMLINK is path a symbolic link
-% optional: mex
 
 function ok = is_symlink(p)
 arguments
@@ -15,15 +14,17 @@
         if stdlib.dotnet_api() >= 6
           ok = ~isempty(System.IO.FileInfo(p).LinkTarget);
         else
-           attr = string(System.IO.File.GetAttributes(p).ToString());
-           % https://learn.microsoft.com/en-us/dotnet/api/system.io.fileattributes
-           % ReparsePoint is for Linux, macOS, and Windows
-           ok = contains(attr, 'ReparsePoint');
+          attr = string(System.IO.File.GetAttributes(p).ToString());
+          % https://learn.microsoft.com/en-us/dotnet/api/system.io.fileattributes
+          % ReparsePoint is for Linux, macOS, and Windows
+          ok = contains(attr, 'ReparsePoint');
         end
       elseif stdlib.has_java()
         ok = java.nio.file.Files.isSymbolicLink(javaPathObject(stdlib.absolute(p)));
+      elseif stdlib.has_python()
+        ok = py.pathlib.Path(p).is_symlink();
       else
-        rethrow(e)
+        ok = logical.empty;
       end
     case "Octave:undefined-function"
       % use lstat() to work with a broken symlink, like Matlab isSymbolicLink

buildfile.m

@@ -273,7 +273,7 @@ function build_exe(context)
 srcs{end+1} = "src/disk_capacity.cpp";
 end
 
-if (isMATLABReleaseOlderThan("R2024b") && ~stdlib.has_dotnet()) || build_all
+if (isMATLABReleaseOlderThan("R2024b") && ~stdlib.has_dotnet() && ~stdlib.has_java() && ~stdlib.has_python()) || build_all
 srcs{end+1} = ["src/is_symlink.cpp", win, sym];
 end