owner: simplify

Author: scivision

+stdlib/+java/get_owner.m

@@ -1,9 +1,7 @@
 function n = get_owner(p)
 
-if ~stdlib.exists(p)
-  n = string.empty;
-  return
-end
+n = string.empty;
+if ~stdlib.exists(p), return, end
 
 % https://docs.oracle.com/en/java/javase/22/docs/api/java.base/java/nio/file/Files.html#getOwner(java.nio.file.Path,java.nio.file.LinkOption...)
 % https://docs.oracle.com/en/java/javase/22/docs/api/java.base/java/nio/file/LinkOption.html
@@ -13,8 +11,7 @@
 
   n = string(javaMethod("getOwner", "java.nio.file.Files", javaPathObject(p), opt));
 catch e
-  warning(e.identifier, "%s", e.message)
-  n = string.empty;
+  warning(e.identifier, "get_owner(%s) failed: %s", p, e.message)
 end
 
 end

+stdlib/+python/get_owner.m

@@ -1,15 +1,12 @@
 function n = get_owner(p)
 
-if ~stdlib.exists(p)
-  n = string.empty;
-  return
-end
+n = string.empty;
+if ~stdlib.exists(p), return, end
 
 try
   n = string(py.str(py.pathlib.Path(p).owner()));
 catch e
   warning(e.identifier, "get_owner(%s) failed: %s", p, e.message);
-  n = string.empty;
 end
 
 end

+stdlib/+sys/get_owner.m

@@ -1,9 +1,7 @@
 function o = get_owner(p)
 
-if ~stdlib.exists(p)
-  o = string.empty;
-  return
-end
+o = string.empty;
+if ~stdlib.exists(p), return, end
 
 if ispc()
   cmd = "pwsh -c (Get-Acl -Path '" + p + "').Owner";
@@ -13,11 +11,9 @@
   cmd = "stat -c %U " + p;
 end
 
-[s, o] = system(cmd);
+[s, m] = system(cmd);
 if s == 0
-  o = string(strip(o));
-else
-  o = string.empty;
+  o = string(strip(m));
 end
 
 end