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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/cosFileTransfer/src/cosFileTransferNATIVE_file.erl
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The R13B03 release.OTP_R13B03
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+%%----------------------------------------------------------------------
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2000-2009. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+%%----------------------------------------------------------------------
+%% File : cosFileTransferNATIVE_file.erl
+%% Description :
+%%
+%% Created : 9 Nov 2000
+%%----------------------------------------------------------------------
+-module('cosFileTransferNATIVE_file').
+
+
+%%----------------------------------------------------------------------
+%% Include files
+%%----------------------------------------------------------------------
+-include("cosFileTransferApp.hrl").
+-include_lib("kernel/include/file.hrl").
+
+%%----------------------------------------------------------------------
+%% External exports
+%%----------------------------------------------------------------------
+-export([open/1,
+ open/2,
+ open/3,
+ user/3,
+ pwd/1,
+ cd/2,
+ mkdir/2,
+ rmdir/2,
+ nlist/1,
+ nlist/2,
+ delete/2,
+ recv/2,
+ recv/3,
+ send/2,
+ send/3,
+ close/1,
+ insert/4]).
+
+%%----------------------------------------------------------------------
+%% Internal exports
+%%----------------------------------------------------------------------
+-export([]).
+
+%%----------------------------------------------------------------------
+%% Records
+%%----------------------------------------------------------------------
+
+%%----------------------------------------------------------------------
+%% Macros
+%%----------------------------------------------------------------------
+
+%%======================================================================
+%% External functions
+%%======================================================================
+%%----------------------------------------------------------------------
+%% function : open
+%% Arguments:
+%% Returns : {ok, Ref} | {error, ehost} for future use
+%% Effect :
+%%----------------------------------------------------------------------
+open(_Host) ->
+ {ok, 'NATIVE'}.
+open(_Host, _Port) ->
+ {ok, 'NATIVE'}.
+open(_Host, _Port, _Flags) ->
+ {ok, 'NATIVE'}.
+
+%%----------------------------------------------------------------------
+%% function : user
+%% Arguments: Ref - what's returned by open/1/2
+%% User = Password = string()
+%% Returns : ok | {error, euser | econn} for future use
+%% Effect :
+%%----------------------------------------------------------------------
+user(_Ref, _User, _Password) ->
+ ok.
+
+%%----------------------------------------------------------------------
+%% function : pwd
+%% Arguments: Ref - what's returned by open/1/2
+%% Returns : {ok, string()} | {error, elogin | econn}
+%% Effect :
+%%----------------------------------------------------------------------
+pwd(_Ref) ->
+ case file:get_cwd() of
+ {ok, Cwd} ->
+ {ok, Cwd};
+ _ ->
+ {error, econn}
+ end.
+
+%%----------------------------------------------------------------------
+%% function : cd
+%% Arguments: Ref - what's returned by open/1/2
+%% Dir - string()
+%% Returns : ok | {error, epath | elogin | econn}
+%% Effect :
+%%----------------------------------------------------------------------
+cd(_Ref, Dir) ->
+ case file:set_cwd(Dir) of
+ ok ->
+ ok;
+ {error, _} ->
+ {error, epath}
+ end.
+
+%%----------------------------------------------------------------------
+%% function : mkdir
+%% Arguments: Ref - what's returned by open/1/2
+%% Dir - string()
+%% Returns : ok | {error, epath}
+%% Effect :
+%%----------------------------------------------------------------------
+mkdir(_Ref, Dir) ->
+ case file:make_dir(Dir) of
+ ok ->
+ ok;
+ {error, _Reason} ->
+ {error, epath}
+ end.
+
+%%----------------------------------------------------------------------
+%% function : rmdir
+%% Arguments: Ref - what's returned by open/1/2
+%% Dir - string()
+%% Returns : ok | {error, epath}
+%% Effect :
+%%----------------------------------------------------------------------
+rmdir(_Ref, Dir) ->
+ case file:del_dir(Dir) of
+ ok ->
+ ok;
+ {error, _Reason} ->
+ {error, epath}
+ end.
+
+%%----------------------------------------------------------------------
+%% function : nlist
+%% Arguments: Ref - what's returned by open/1/2
+%% Dir - string()
+%% Returns : {ok, Listing} | {error, epath | elogin | econn}
+%% Effect :
+%%----------------------------------------------------------------------
+nlist(_Ref) ->
+ case file:get_cwd() of
+ {ok, Cwd} ->
+ %% Here we can assume that it's a Directory is tested.
+ convert_to_nlist(file:list_dir(Cwd));
+ _ ->
+ {error, epath}
+ end.
+nlist(_Ref, Dir) ->
+ case file:list_dir(Dir) of
+ {error, _} ->
+ %% Might be a File
+ case file:read_file_info(Dir) of
+ {ok, _} ->
+ convert_to_nlist_helper([Dir], []);
+ _ ->
+ {error, epath}
+ end;
+ {ok, Content} ->
+ convert_to_nlist_helper(Content, [])
+ end.
+
+convert_to_nlist({error, _}) ->
+ {error, epath};
+convert_to_nlist({ok, Content}) ->
+ convert_to_nlist_helper(Content, []).
+
+convert_to_nlist_helper([], Acc) ->
+ {ok, lists:concat(Acc)};
+convert_to_nlist_helper([H|T], Acc) ->
+ convert_to_nlist_helper(T, [H, "\r\n"|Acc]).
+
+%%----------------------------------------------------------------------
+%% function : delete
+%% Arguments: Ref - what's returned by open/1/2
+%% File - string()
+%% Returns : ok | {error, epath}
+%% Effect :
+%%----------------------------------------------------------------------
+delete(_Ref, File) ->
+ case file:delete(File) of
+ ok ->
+ ok;
+ {error, _Reason} ->
+ {error, epath}
+ end.
+
+%%----------------------------------------------------------------------
+%% function : recv
+%% Arguments: Ref - what's returned by open/1/2
+%% Returns : ok | {error, epath | elogin | econn}
+%% Effect :
+%%----------------------------------------------------------------------
+recv(_Ref, _Remote) ->
+ ok.
+recv(_Ref, Remote, Local) ->
+ copy_file(Remote, Local).
+
+%%----------------------------------------------------------------------
+%% function : send
+%% Arguments: Ref - what's returned by open/1/2
+%% Returns : ok | {error, epath | elogin | econn | etnospc | epnospc | efnamena}
+%% Effect :
+%%----------------------------------------------------------------------
+send(_Ref, _Local) ->
+ ok.
+send(_Ref, Local, Remote) ->
+ copy_file(Local, Remote).
+
+%%----------------------------------------------------------------------
+%% function : close
+%% Arguments: Ref - what's returned by open/1/2
+%% Returns : ok
+%% Effect : Currently none.
+%%----------------------------------------------------------------------
+close(_) ->
+ ok.
+
+
+%%----------------------------------------------------------------------
+%% function : insert
+%% Arguments: Ref - what's returned by open/1/2
+%% Local - absolute file name
+%% Remote - absolute file name
+%% Offset - long()
+%% Returns : ok
+%% Effect :
+%%----------------------------------------------------------------------
+insert(_Ref, Source, Target, Offset) ->
+ case file:open(Source, [raw, binary, read]) of
+ {ok, SourceDev} ->
+ case file:open(Target, [raw, binary, read, write]) of
+ {ok, TargetDev} ->
+ {ok, #file_info{size=SSize}} =
+ file:read_file_info(Source),
+ {ok, #file_info{size=TSize}} =
+ file:read_file_info(Target),
+ insert_file_helper(SourceDev, TargetDev, SSize, TSize, Offset);
+ Reason ->
+ file:close(SourceDev),
+ convert_error(Reason)
+ end;
+ Reason ->
+ convert_error(Reason)
+ end.
+
+
+insert_file_helper(SourceDev, TargetDev, SSize, TSize, Offset) ->
+ BuffSize = cosFileTransferApp:get_buffert_size(),
+ move_data(TargetDev, TSize, SSize+TSize, TSize-Offset, BuffSize),
+ insert_data(SourceDev, TargetDev, 0, Offset, BuffSize),
+ file:close(SourceDev),
+ file:close(TargetDev).
+move_data(_F, _RLocation, _WLocation, Counter, _BuffSize) when Counter == 0 ->
+ ok;
+move_data(F, RLocation, WLocation, Counter, BuffSize) when Counter =< BuffSize ->
+ case file:pread(F, RLocation-Counter, Counter) of
+ {ok, Bin} ->
+ file:pwrite(F, WLocation-Counter, Bin);
+ eof ->
+ ok
+ end;
+move_data(F, RLocation, WLocation, Counter, BuffSize) ->
+ NewRLC = RLocation-BuffSize,
+ NewWLC = WLocation-BuffSize,
+ case file:pread(F, NewRLC, BuffSize) of
+ {ok, Bin} ->
+ file:pwrite(F, NewWLC, Bin),
+ move_data(F, NewRLC, NewWLC, Counter-BuffSize, BuffSize);
+ eof ->
+ ok
+ end.
+
+insert_data(FSRC, FTGT, RLocation, WLocation, BuffSize) ->
+ case file:pread(FSRC, RLocation, BuffSize) of
+ {ok, Bin} ->
+ file:pwrite(FTGT, WLocation, Bin),
+ insert_data(FSRC, FTGT, RLocation+BuffSize, WLocation+BuffSize, BuffSize);
+ eof ->
+ ok
+ end.
+
+
+%%======================================================================
+%% Internal functions
+%%======================================================================
+copy_file(Source, Target) ->
+ case file:open(Source, [raw, binary, read]) of
+ {ok, SourceDev} ->
+ case file:open(Target, [raw, binary, append]) of
+ {ok, TargetDev} ->
+ BuffSize = cosFileTransferApp:get_buffert_size(),
+ copy_file_helper(SourceDev, TargetDev, BuffSize);
+ Reason ->
+ file:close(SourceDev),
+ convert_error(Reason)
+ end;
+ Reason ->
+ convert_error(Reason)
+ end.
+
+copy_file_helper(SourceDev, TargetDev, BuffSize) ->
+ case file:read(SourceDev, BuffSize) of
+ eof ->
+ file:close(SourceDev),
+ file:close(TargetDev);
+ {ok, Bin} ->
+ case file:write(TargetDev, Bin) of
+ ok ->
+ copy_file_helper(SourceDev, TargetDev, BuffSize);
+ Reason ->
+ file:close(SourceDev),
+ file:close(TargetDev),
+ convert_error(Reason)
+ end;
+ {error, Reason} ->
+ file:close(SourceDev),
+ file:close(TargetDev),
+ convert_error(Reason)
+ end.
+
+convert_error({error, eacces}) ->
+ {error, elogin};
+convert_error({error, enoent}) ->
+ {error, epath};
+convert_error({error, enotdir}) ->
+ {error, epath};
+convert_error({error, eidir}) ->
+ {error, epath};
+convert_error({error, enospc}) ->
+ {error, etnospc};
+convert_error(_) ->
+ {error, epath}.
+
+%%======================================================================
+%% END OF MODULE
+%%======================================================================