% Copyright (C) 2008 Eric Kow
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2, or (at your option)
% any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; see the file COPYING. If not, write to
% the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
% Boston, MA 021101301, USA.
\subsubsection{darcs show authors}
\begin{code}
module Darcs.Commands.ShowAuthors ( show_authors ) where
import Data.List ( sort, group )
import Darcs.Arguments ( DarcsFlag(..), working_repo_dir )
import Darcs.Commands ( DarcsCommand(..), nodefaults )
import Darcs.External ( viewDoc )
import Darcs.Hopefully ( info )
import Darcs.Repository ( amInRepository, read_repo, withRepository, ($-) )
import Darcs.Patch.Info ( pi_author )
import Darcs.Ordered ( mapRL, concatRL )
import Printer ( text )
\end{code}
\options{show authors}
\haskell{show_authors_help}
\begin{code}
show_authors_description :: String
show_authors_description = "Show all authors in the repository."
show_authors_help :: String
show_authors_help =
"The authors command writes a list of all patch authors in the repository to\n" ++
"standard output."
show_authors :: DarcsCommand
show_authors = DarcsCommand {
command_name = "authors",
command_help = show_authors_help,
command_description = show_authors_description,
command_extra_args = 0,
command_extra_arg_help = [],
command_command = authors_cmd,
command_prereq = amInRepository,
command_get_arg_possibilities = return [],
command_argdefaults = nodefaults,
command_advanced_options = [],
command_basic_options = [working_repo_dir] }
authors_cmd :: [DarcsFlag] -> [String] -> IO ()
authors_cmd opts _ = withRepository opts $- \repository -> do
patches <- read_repo repository
let authors = mapRL process $ concatRL patches
viewDoc $ text $ unlines $
if Verbose `elem` opts
then authors
else reverse $ map shownames $ sort $
map (\s -> (length s,head s)) $ group $ sort authors
where
process = pi_author . info
shownames (n, a) = show n ++ "\t" ++ a
\end{code}