ocaml 3.09 transition

[helm.git] / helm / matita / matitaLog.ml

diff --git a/helm/matita/matitaLog.ml b/helm/matita/matitaLog.ml
index 0b55e831862aff85e565409ea53099a1ba0c68a2..8d9fbe958586f69bb01f9025961da080255d6c6a 100644 (file)
--- a/helm/matita/matitaLog.ml
+++ b/helm/matita/matitaLog.ml
@@ -28,20 +28,32 @@ open Printf
 type log_tag = [ `Debug | `Error | `Message | `Warning ]
 type log_callback = log_tag -> string -> unit
 
+(* 
+colors=(black red green yellow blue magenta cyan gray white)
+ccodes=(30 31 32 33 34 35 36 37 39)
+*)
+
+let blue   = "\e[0;34m"
+let yellow = "\e[0;33m"
+let green  = "\e[0;32m"
+let red    = "\e[0;31m"
+let black  = "\e[0m"
+
 let default_callback tag s =
-  let prefix =
+  let prefix,ch =
     match tag with
-    | `Message -> "Info: "
-    | `Warning -> "Warning: "
-    | `Error -> "Error: "
-    | `Debug -> "Debug: "
+    | `Message -> green  ^ "Info:  ", stdout
+    | `Warning -> yellow ^ "Warn:  ", stderr
+    | `Error ->   red    ^ "Error: ", stderr
+    | `Debug ->   blue   ^ "Debug: ", stderr
   in
-  print_endline (prefix ^ s);
-  flush stdout
+  output_string ch (prefix ^ black ^ s ^ "\n");
+  flush ch
 
 let callback = ref default_callback
 
 let set_log_callback f = callback := f
+let get_log_callback () = !callback
 
 let message s = !callback `Message s
 let warn s = !callback `Warning s