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(***********************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *)
(* \VV/ *************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(***********************************************************************)
type level = [
| `DEBUG
| `INFO
| `NOTICE
| `WARNING
| `ERROR
| `FATAL ]
(** Some excerpt of Util and similar files to avoid loading the whole
module and its dependencies (and hence Compat and Camlp4) *)
let debug = ref false
(* On a Win32 application with no console, writing to stderr raise
a Sys_error "bad file descriptor", hence the "try" below.
Ideally, we should re-route message to a log file somewhere, or
print in the response buffer.
*)
let log ?(level = `DEBUG) msg =
let prefix = match level with
| `DEBUG -> "DEBUG"
| `INFO -> "INFO"
| `NOTICE -> "NOTICE"
| `WARNING -> "WARNING"
| `ERROR -> "ERROR"
| `FATAL -> "FATAL"
in
if !debug then begin
try Printf.eprintf "[%s] %s\n%!" prefix msg
with _ -> ()
end
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