1 files changed, 84 insertions, 0 deletions
diff --git a/src/rebar_log.erl b/src/rebar_log.erl
new file mode 100644
index 0000000..58f7992
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+++ b/src/rebar_log.erl
@@ -0,0 +1,84 @@
+%% -------------------------------------------------------------------
+%%
+%% rebar: Erlang Build Tools
+%%
+%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
+%%
+%% Permission is hereby granted, free of charge, to any person obtaining a copy
+%% of this software and associated documentation files (the "Software"), to deal
+%% in the Software without restriction, including without limitation the rights
+%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+%% copies of the Software, and to permit persons to whom the Software is
+%% furnished to do so, subject to the following conditions:
+%%
+%% The above copyright notice and this permission notice shall be included in
+%% all copies or substantial portions of the Software.
+%%
+%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+%% THE SOFTWARE.
+%% -------------------------------------------------------------------
+-module(rebar_log).
+
+-export([init/0,
+         set_level/1, get_level/0,
+         log/3]).
+
+%% ===================================================================
+%% Public API
+%% ===================================================================
+
+init() ->
+    case rebar_config:get_global(verbose, "0") of
+        "1" ->
+            set_level(debug);
+        _ ->
+            set_level(error)
+    end.
+            
+
+set_level(Level) ->
+    ok = application:set_env(rebar, log_level, Level).
+
+get_level() ->
+    case application:get_env(rebar, log_level) of
+        undefined ->
+            error;
+        {ok, Value} ->
+            Value
+    end.
+
+log(Level, Str, Args) ->
+    {ok, LogLevel} = application:get_env(rebar, log_level),
+    case should_log(LogLevel, Level) of
+        true ->
+            io:format(log_prefix(Level) ++ Str, Args);
+        false ->
+            ok
+    end.
+
+%% ===================================================================
+%% Internal functions
+%% ===================================================================
+
+should_log(debug, _)     -> true;
+should_log(info, debug)  -> false;
+should_log(info, _)      -> true;
+should_log(warn, debug)  -> false;
+should_log(warn, info)   -> false;
+should_log(warn, _)      -> true;
+should_log(error, error) -> true;
+should_log(error, _)     -> false;
+should_log(_, _)         -> false.
+    
+log_prefix(debug) -> "DEBUG:" ;
+log_prefix(info)  -> "INFO: ";
+log_prefix(warn)  -> "WARN: ";
+log_prefix(error) -> "ERROR: ".
+
+     
+