sasl: set encoding of SASL report log

This can now be explicitly set by the 'sasl_error_logger'
configuration parameter, but if not set, the default encoding is now
utf8. When printing to this log, the Unicode translation modifier, t,
might be used in the format string.

1 files changed, 14 insertions, 2 deletions

diff --git a/lib/sasl/src/sasl_report_file_h.erl b/lib/sasl/src/sasl_report_file_h.erl
index 21746839fa..d3b5c7dc0d 100644
--- a/lib/sasl/src/sasl_report_file_h.erl
+++ b/lib/sasl/src/sasl_report_file_h.erl
@@ -29,15 +29,27 @@
 	 handle_event/2, handle_call/2, handle_info/2,
 	 terminate/2]).
 
-init({File, Modes, Type}) when is_list(Modes) ->
+init({File, Modes0, Type}) when is_list(Modes0) ->
     process_flag(trap_exit, true),
+    Modes1 =
+        case lists:keymember(encoding,1,Modes0) of
+            true -> Modes0;
+            false -> [{encoding,utf8}|Modes0]
+        end,
+    Modes =
+        case [M || M <- Modes1, lists:member(M,[write,append,exclusive])] of
+            [] ->
+                [write|Modes1];
+            _ ->
+                Modes1
+        end,
     case file:open(File, Modes) of
 	{ok,Fd} ->
 	    {ok, {Fd, File, Type}};
 	What ->
 	    What
     end.
-    
+
 handle_event({_Type, GL, _Msg}, State) when node(GL) /= node() ->
     {ok, State};
 handle_event(Event, {Fd, File, Type}) ->