dosutils: add Novell-style paging to FLAG tools and SLIST

- add a shared DOS pager helper for long tool output
- page FLAG wildcard output with the Novell continue prompt
- fix FLAGDIR current-directory handling for "." and volume root
- add FLAGDIR wildcard directory listing support
- page FLAGDIR wildcard output like Novell FLAGDIR
- keep FLAGDIR display formatting aligned with Novell output
- make SLIST /CONTINUE enable continuous output
- keep SLIST bindery scanning compatible with ncpfs behavior
- preserve SLIST NET_ADDRESS display and default server marking

flag.c

@@ -381,6 +381,14 @@ static void flag_display_one(char *name, uint32 attr)
   fprintf(stdout, "\n");
 }
 
+static void flag_display_one_paged(char *name, uint32 attr,
+                                   int *line_count, int *continuous)
+{
+  flag_display_one(name, attr);
+  tool_page_line(line_count, continuous);
+}
+
+
 static int flag_has_wildcards(char *s)
 {
   while (*s) {
@@ -395,6 +403,8 @@ static int flag_list(char *pattern)
   struct find_t ff;
   unsigned findattr = _A_RDONLY | _A_HIDDEN | _A_SYSTEM | _A_ARCH;
   int found = 0;
+  int line_count = 0;
+  int continuous = 0;
 
   if (_dos_findfirst(pattern, findattr, &ff))
     return(-1);
@@ -406,7 +416,7 @@ static int flag_list(char *pattern)
       if (flag_ncp87_obtain_attrs(ff.name, &nwattrs))
         nwattrs = (uint32)ff.attrib;
 
-      flag_display_one(ff.name, nwattrs);
+      flag_display_one_paged(ff.name, nwattrs, &line_count, &continuous);
       found++;
     }
   } while (!_dos_findnext(&ff));