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%% @author Bob Ippolito <bob@mochimedia.com>
%% @copyright 2008 Mochi Media, Inc.
%% @doc Formatter that understands records.
%%
%% Usage:
%%
%% 1> M = mochifmt_records:new([{rec, record_info(fields, rec)}]),
%% M:format("{0.bar}", [#rec{bar=foo}]).
%% foo
-module(mochifmt_records, [Recs]).
-author('bob@mochimedia.com').
-export([get_value/2]).
-compile({parse_transform, pmod_pt}).
get_value(Key, Rec) when is_tuple(Rec) and is_atom(element(1, Rec)) ->
try begin
Atom = list_to_existing_atom(Key),
{_, Fields} = proplists:lookup(element(1, Rec), Recs),
element(get_rec_index(Atom, Fields, 2), Rec)
end
catch error:_ -> mochifmt:get_value(Key, Rec)
end;
get_value(Key, Args) ->
mochifmt:get_value(Key, Args).
get_rec_index(Atom, [Atom | _], Index) ->
Index;
get_rec_index(Atom, [_ | Rest], Index) ->
get_rec_index(Atom, Rest, 1 + Index).
%%
%% Tests
%%
-include_lib("eunit/include/eunit.hrl").
-ifdef(TEST).
-endif.
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