java: only native functions for speed/simplicity

Author: scivision

+stdlib/+java/get_owner.m

@@ -12,15 +12,16 @@
 % https://docs.oracle.com/en/java/javase/22/docs/api/java.base/java/nio/file/LinkOption.html
 
 n = "";
-if stdlib.strempty(file), return, end
+if stdlib.strempty(file)
+  return
+end
 
-file = stdlib.absolute(file);
 % Java 1.8 benefits from absolute.
 % We only saw this issue with R2025a on windows-2025 GA runner image.
+opt = java.nio.file.LinkOption.values();
 
 try %#ok<TRYNC>
-  opt = java.nio.file.LinkOption.values();
-  n = string(java.nio.file.Files.getOwner(javaPathObject(file), opt));
+  n = string(java.nio.file.Files.getOwner(javaAbsolutePath(file), opt));
 end
 
 end

+stdlib/+java/is_symlink.m

@@ -1,8 +1,5 @@
 function ok = is_symlink(file)
-arguments
-  file (1,1) string
-end
 
-ok = java.nio.file.Files.isSymbolicLink(javaPathObject(stdlib.absolute(file)));
+ok = java.nio.file.Files.isSymbolicLink(javaAbsolutePath(file));
 
 end

+stdlib/+java/read_symlink.m

@@ -2,17 +2,13 @@
 % empty if no symlinks
 
 function r = read_symlink(file)
-arguments
-  file (1,1) string
-end
 
-if stdlib.is_symlink(file)
-  % must be absolute path
-  % must not be .canonical or symlink is gobbled!
-  r = stdlib.absolute(file);
-  % https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/file/Files.html#readSymbolicLink(java.nio.file.Path)
-  r = string(java.nio.file.Files.readSymbolicLink(javaPathObject(r)));
-else
+% must be absolute path
+% must not be .canonical or symlink is gobbled!
+% https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/file/Files.html#readSymbolicLink(java.nio.file.Path)
+try
+  r = string(java.nio.file.Files.readSymbolicLink(javaAbsolutePath(file)));
+catch
   r = "";
 end