javaLinkOption() dedupe

Author: scivision

+stdlib/exists.m

@@ -19,7 +19,7 @@
 if use_java
 % https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/file/Files.html#exists(java.nio.file.Path,java.nio.file.LinkOption...)
 % this takes 2x longer than java.io.File.exists()
-% opt = java.nio.file.LinkOption.values;
+% opt = javaLinkOption();
 % ok = java.nio.file.Files.exists(java.io.File(p).toPath(), opt);
 
 % https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/File.html#exists()

+stdlib/get_owner.m

@@ -9,12 +9,11 @@
 % https://docs.oracle.com/en/java/javase/22/docs/api/java.base/java/nio/file/LinkOption.html
 
 op = javaFileObject(p).toPath();
+opt = javaLinkOption();
 
 if stdlib.isoctave()
-  opt = javaMethod("values", "java.nio.file.LinkOption");
   n = javaMethod("getOwner", "java.nio.file.Files", op, opt).toString();
 else
-  opt = java.nio.file.LinkOption.values;
   n = string(java.nio.file.Files.getOwner(op, opt));
 end
 

+stdlib/hard_link_count.m

@@ -15,12 +15,11 @@
 end
 
 op = javaFileObject(p).toPath();
+opt = javaLinkOption();
 
 if stdlib.isoctave()
-  opt = javaMethod("values", "java.nio.file.LinkOption");
   c = javaMethod("getAttribute", "java.nio.file.Files", op, "unix:nlink", opt);
 else
-  opt = java.nio.file.LinkOption.values;
   c = java.nio.file.Files.getAttribute(op, "unix:nlink", opt);
 end
 

+stdlib/is_regular_file.m

@@ -9,12 +9,11 @@
 p = stdlib.absolute(p, "", false, true);
 
 op = java.io.File(p).toPath();
+opt = javaLinkOption();
 
 if stdlib.isoctave()
-  opt = javaMethod("values", "java.nio.file.LinkOption");
   r = javaMethod("isRegularFile", "java.nio.file.Files", op, opt);
 else
-  opt = java.nio.file.LinkOption.values;
   r = java.nio.file.Files.isRegularFile(op, opt);
 end
 

+stdlib/private/javaLinkOption.m

@@ -0,0 +1,8 @@
+function o = javaLinkOption()
+
+try
+  o = java.nio.file.LinkOption.values;
+catch e
+
+
+end