hard_link_count: choose_method

Author: scivision

+stdlib/hard_link_count.m

@@ -5,23 +5,15 @@
 % * https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/file/Files.html#getPosixFileAttributes(java.nio.file.Path,java.nio.file.LinkOption...)
 % * https://docs.oracle.com/javase/tutorial/essential/io/links.html
 
-function c = hard_link_count(p)
+function c = hard_link_count(file, method)
 arguments
-  p {mustBeTextScalar}
+  file {mustBeTextScalar}
+  method (1,:) string = ["java", "python"]
 end
 
-c = 0;
+fun = choose_method(method, "hard_link_count");
 
-if isunix() && stdlib.has_java()
-  c = stdlib.java.hard_link_count(p);
-elseif stdlib.has_python()
-  c = stdlib.python.hard_link_count(p);
-elseif stdlib.isoctave()
-  [s, err] = stat(p);
-  if err == 0
-    c = s.nlink;
-  end
-end
+c = fun(file);
 
 end
 

+stdlib/private/choose_method.m

@@ -18,6 +18,11 @@
       if endsWith(name, "ram_total")
         if stdlib.dotnet_api() < 6, continue, end
       end
+    case "java"
+      has = @stdlib.has_java;
+      if endsWith(name, "hard_link_count")
+        if ~isunix(), continue, end
+      end
     case "python"
       has = @stdlib.has_python;
 

test/TestDisk.m

@@ -11,7 +11,7 @@
 inode_fun = {@stdlib.inode, @stdlib.sys.inode, @stdlib.java.inode, @stdlib.python.inode}
 disk_available_fun = {@stdlib.disk_available, @stdlib.sys.disk_available, @stdlib.dotnet.disk_available, @stdlib.java.disk_available, @stdlib.python.disk_available}
 disk_capacity_fun  = {@stdlib.disk_capacity,  @stdlib.sys.disk_capacity,  @stdlib.dotnet.disk_capacity,  @stdlib.java.disk_capacity,  @stdlib.python.disk_capacity}
-hl_fun = {@stdlib.hard_link_count, @stdlib.java.hard_link_count, @stdlib.python.hard_link_count}
+hl_fun = {'java', 'python'}
 fst_fun = {@stdlib.filesystem_type, @stdlib.sys.filesystem_type, @stdlib.dotnet.filesystem_type, @stdlib.java.filesystem_type, @stdlib.python.filesystem_type}
 owner_fun = {@stdlib.get_owner, @stdlib.sys.get_owner, @stdlib.dotnet.get_owner, @stdlib.java.get_owner, @stdlib.python.get_owner}
 end
@@ -60,11 +60,12 @@ function test_disk_capacity(tc, Ps, disk_capacity_fun)
 
 
 function test_hard_link_count(tc, hl_fun)
-is_capable(tc, hl_fun)
-
-fn = mfilename("fullpath") + ".m";
-
-tc.verifyGreaterThanOrEqual(hl_fun(fn), 1)
+try
+  c = stdlib.hard_link_count(mfilename("fullpath") + ".m", hl_fun);
+  tc.verifyGreaterThanOrEqual(c, 1)
+catch e
+  tc.verifyEqual(e.identifier, 'stdlib:choose_method:NameError')
+end
 end