% Copyright (C) 20022004 David Roundy
%
% 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.
%
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% 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.
\subsection{darcs remove}
\begin{code}
module Darcs.Commands.Remove ( remove, rm, unadd ) where
import Darcs.Commands ( DarcsCommand(..), nodefaults,
command_alias, command_stub,
)
import Darcs.Arguments ( DarcsFlag, fixSubPaths,
list_registered_files,
working_repo_dir, umask_option
)
import Darcs.RepoPath ( SubPath, toFilePath, sp2fn )
import Darcs.Repository ( Repository, withRepoLock, ($-), amInRepository,
slurp_pending, slurp_recorded, get_unrecorded, add_to_pending )
import Darcs.Patch ( RepoPatch, Prim, apply_to_slurpy, adddir, rmdir, addfile, rmfile )
import Darcs.Ordered ( FL(..), (+>+) )
import Darcs.SlurpDirectory ( slurp_removedir, slurp_removefile )
import Darcs.Repository.Prefs ( filetype_function )
import Darcs.Diff ( unsafeDiff )
#include "impossible.h"
remove_description :: String
remove_description =
"Remove one or more files or directories from the repository."
\end{code}
\options{remove}
\haskell{remove_help}
\begin{code}
remove_help :: String
remove_help =
"Remove should be called when you want to remove a file from your project,\n"++
"but don't actually want to delete the file. Otherwise just delete the\n"++
"file or directory, and darcs will notice that it has been removed.\n" ++
"Be aware that the file WILL be deleted from any other copy of the\n" ++
"repository to which you later apply the patch.\n"
remove :: DarcsCommand
remove = DarcsCommand {command_name = "remove",
command_help = remove_help,
command_description = remove_description,
command_extra_args = 1,
command_extra_arg_help = ["<FILE or DIRECTORY> ..."],
command_command = remove_cmd,
command_prereq = amInRepository,
command_get_arg_possibilities = list_registered_files,
command_argdefaults = nodefaults,
command_advanced_options = [umask_option],
command_basic_options =
[working_repo_dir]}
remove_cmd :: [DarcsFlag] -> [String] -> IO ()
remove_cmd opts relargs =
withRepoLock opts $- \repository -> do
args <- fixSubPaths opts relargs
p <- make_remove_patch repository args
add_to_pending repository p
make_remove_patch :: RepoPatch p => Repository p -> [SubPath] -> IO (FL Prim)
make_remove_patch repository files =
do s <- slurp_pending repository
srecorded <- slurp_recorded repository
pend <- get_unrecorded repository
let sunrec = fromJust $ apply_to_slurpy pend srecorded
wt <- filetype_function
mrp wt s sunrec files
where mrp wt s sunrec (f:fs) =
case slurp_removedir fn s of
Just s' ->
case slurp_removedir fn sunrec of
Just sunrec' -> do rest <- mrp wt s' sunrec' fs
return $ rmdir f_fp :>: rest
Nothing -> do rest <- mrp wt s' sunrec fs
return $ adddir f_fp :>: rmdir f_fp :>: rest
Nothing ->
case slurp_removefile fn s of
Nothing -> fail $ "Can't remove "++f_fp
Just s' ->
case slurp_removefile fn sunrec of
Nothing -> do rest <- mrp wt s' sunrec fs
return $ addfile f_fp :>: rmfile f_fp :>: rest
Just sunrec' -> do rest <- mrp wt s' sunrec' fs
let newp = unsafeDiff [] wt sunrec sunrec'
return $ newp +>+ rest
where fn = sp2fn f
f_fp = toFilePath f
mrp _ _ _ [] = return NilFL
\end{code}
% rm Note: not a subsection because not to be documented.
\begin{code}
rm_description :: String
rm_description =
"Does not actually do anything, but offers advice on removing files"
rm_help :: String
rm_help =
"This command does not do anything.\n"++
"If you want to remove a file AND delete it, just delete the file or directory,\n"++
"and darcs will notice that it has been removed.\n" ++
"If you want to remove a file WITHOUT deleting it, use the 'remove' command\n"
rm :: DarcsCommand
rm = command_stub "rm" rm_help rm_description remove
\end{code}
% unadd Note: not a subsection because not to be documented.
\begin{code}
unadd :: DarcsCommand
unadd = command_alias "unadd" remove
\end{code}