get_owner: java fcn

Author: scivision

+stdlib/+java/filesystem_type.m

@@ -1,5 +1,5 @@
 function t = filesystem_type(p)
 
-t = javaMethod("getFileStore", "java.nio.file.Files", javaPathObject(p)).type;
+t = string(javaMethod("getFileStore", "java.nio.file.Files", javaPathObject(p)).type);
 
 end

+stdlib/+java/get_owner.m

@@ -0,0 +1,15 @@
+function n = get_owner(p)
+
+% 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
+
+try
+  opt = javaMethod("values", "java.nio.file.LinkOption");
+
+  n = string(javaMethod("getOwner", "java.nio.file.Files", javaPathObject(p), opt));
+catch e
+  warning(e.identifier, "%s", e.message)
+  n = string.empty;
+end
+
+end

+stdlib/+java/get_username.m

@@ -0,0 +1,10 @@
+function n = get_username()
+
+try
+  n = string(javaMethod("getProperty", "java.lang.System", "user.name"));
+catch e
+  warning(e.identifier, "Failed to get username from Java: %s", e.message);
+  n = string.empty;
+end
+
+end

+stdlib/+sys/get_username.m

@@ -0,0 +1,17 @@
+function n = get_username()
+
+if ispc()
+  cmd = "whoami";
+else
+  cmd = "id -un";  % POSIX compliant command to get username
+end
+[s, n] = system(cmd);
+
+if s == 0
+  n = strtrim(n);  % Remove any trailing newline or spaces
+else
+  warning("Failed to get username from system command: %s", n);
+  n = string.empty;
+end
+
+end

+stdlib/get_owner.m

@@ -15,13 +15,7 @@
 if ~ispc() && stdlib.has_python()
   n = stdlib.python.get_owner(p);
 elseif stdlib.has_java()
-% 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
-
-  opt = javaMethod("values", "java.nio.file.LinkOption");
-
-  n = javaMethod("getOwner", "java.nio.file.Files", javaPathObject(p), opt).toString();
-  % .toString() needed for Octave
+  n = stdlib.java.get_owner(p);
 end
 
 if strempty(n)

+stdlib/get_username.m

@@ -8,7 +8,11 @@
   n = System.Environment.UserName;
   % https://learn.microsoft.com/en-us/dotnet/api/system.environment.username
 elseif stdlib.has_java()
-  n = javaMethod("getProperty", "java.lang.System", "user.name");
+  n = stdlib.java.get_username();
+end
+
+if strempty(n)
+  n = stdlib.sys.get_username();
 end
 
 try  %#ok<*TRYNC>

test/TestSys.m

@@ -59,8 +59,6 @@ function test_hostname(tc)
 end
 
 function test_username(tc)
-tc.assumeTrue(stdlib.has_dotnet() || stdlib.has_java())
-
 u = stdlib.get_username();
 tc.verifyGreaterThan(strlength(u), 0)
 end