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166 wiersze
5.6 KiB
166 wiersze
5.6 KiB
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
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%% ex: ts=4 sw=4 et
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%% -------------------------------------------------------------------
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%%
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%% rebar: Erlang Build Tools
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%%
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%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
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%%
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%%
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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%% -------------------------------------------------------------------
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-module(rebar_log).
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-export([init/2,
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crashdump/2,
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set_level/1,
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get_level/0,
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error_level/0,
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default_level/0,
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debug_level/0,
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diagnostic_level/0,
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intensity/0,
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log/3,
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is_verbose/1,
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valid_level/1,
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truncate/1]).
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-define(ERROR_LEVEL, 0).
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-define(WARN_LEVEL, 1).
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-define(INFO_LEVEL, 2).
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-define(DEBUG_LEVEL, 3).
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-define(DIAGNOSTIC_LEVEL, 4).
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-define(DFLT_INTENSITY, high).
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%% ===================================================================
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%% Public API
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%% ===================================================================
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%% @doc Returns the color intensity, we first check the application envorinment
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%% if that is not set we check the environment variable REBAR_COLOR.
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intensity() ->
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case application:get_env(rebar, color_intensity) of
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undefined ->
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R = case os:getenv("REBAR_COLOR") of
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"high" ->
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high;
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"low" ->
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low;
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"none" ->
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none;
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_ ->
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?DFLT_INTENSITY
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end,
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application:set_env(rebar, color_intensity, R),
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R;
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{ok, Mode} ->
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Mode
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end.
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init(Caller, Verbosity) ->
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Level = case valid_level(Verbosity) of
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?ERROR_LEVEL -> error;
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?WARN_LEVEL -> warn;
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?INFO_LEVEL -> info;
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?DEBUG_LEVEL -> debug;
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?DIAGNOSTIC_LEVEL -> debug
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end,
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Intensity = intensity(),
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application:set_env(rebar, log_caller, Caller),
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Log = ec_cmd_log:new(Level, Caller, Intensity),
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set_level(valid_level(Verbosity)),
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application:set_env(rebar, log, Log).
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set_level(Level) ->
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ok = application:set_env(rebar, log_level, Level).
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get_level() ->
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case application:get_env(rebar, log_level) of
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undefined ->
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default_level();
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{ok, Level} ->
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Level
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end.
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log(diagnostic, Str, Args) ->
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%% The diagnostic level is intended for debug info
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%% that is useful for rebar3 developers and implementers who
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%% understand the internal structure; the debug level
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%% itself should aim to be useful for users themselves.
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%% The underlying library only supports debug at its lowest
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%% level, so we filter on our end of the lib.
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case get_level() of
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?DIAGNOSTIC_LEVEL -> log(debug, Str, Args);
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_ -> ok
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end;
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log(Level = error, Str, Args) ->
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case application:get_env(rebar, log) of
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{ok, LogState} ->
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NewStr = lists:flatten(cf:format("~!^~ts~n", [Str])),
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ec_cmd_log:Level( LogState, NewStr, Args);
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undefined -> % fallback
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io:format(standard_error, Str++"~n", Args)
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end;
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log(Level, Str, Args) ->
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case application:get_env(rebar, log) of
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{ok, LogState} -> ec_cmd_log:Level(LogState, Str++"~n", Args);
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undefined -> io:format(Str++"~n", Args)
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end.
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crashdump(Str, Args) ->
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crashdump("rebar3.crashdump", Str, Args).
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crashdump(File, Str, Args) ->
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case application:get_env(rebar, log_caller) of
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{ok, api} ->
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ok;
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_ ->
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file:write_file(File, io_lib:fwrite(Str, Args))
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end.
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error_level() -> ?ERROR_LEVEL.
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default_level() -> ?INFO_LEVEL.
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debug_level() -> ?DEBUG_LEVEL.
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diagnostic_level() -> ?DIAGNOSTIC_LEVEL.
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is_verbose(State) ->
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rebar_state:get(State, is_verbose, false).
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valid_level(Level) ->
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erlang:max(?ERROR_LEVEL, erlang:min(Level, ?DIAGNOSTIC_LEVEL)).
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%% ===================================================================
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%% Internal functions
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%% ===================================================================
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truncate(IoData) ->
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Size = iolist_size(IoData),
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if Size > 4096 -> [take_bytes(4096, IoData), "[...]"];
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Size =< 4096 -> IoData
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end.
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take_bytes(0, _) -> [];
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take_bytes(N, Bin) when is_binary(Bin), byte_size(Bin) > N ->
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<<B:N/binary, _>> = Bin,
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binary:copy(B); % avoid holding on to large refs
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take_bytes(_, Bin) when is_binary(Bin) ->
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Bin;
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take_bytes(_, []) -> [];
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take_bytes(N, [H|T]) when is_integer(H) ->
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[H | take_bytes(N-1, T)];
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take_bytes(N, [H|T]) when is_binary(H); is_list(H) ->
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Res = take_bytes(N, H),
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[Res | take_bytes(N-byte_size(Res), T)].
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