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%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2005-2011. 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%
%%
%%
%%% Description: user interaction for SSH
-module(ssh_io).
-export([yes_no/1, read_password/1, read_line/1, format/2]).
-import(lists, [reverse/1]).
read_line(Prompt) when is_list(Prompt) ->
io:get_line(list_to_atom(Prompt));
read_line(Prompt) when is_atom(Prompt) ->
io:get_line(Prompt).
read_ln(Prompt) ->
trim(read_line(Prompt)).
yes_no(Prompt) ->
io:format("~s [y/n]?", [Prompt]),
case read_ln('') of
"y" -> yes;
"n" -> no;
"Y" -> yes;
"N" -> no;
_ ->
io:format("please answer y or n\n"),
yes_no(Prompt)
end.
read_password(Prompt) ->
format("~s", [listify(Prompt)]),
case io:get_password() of
"" ->
read_password(Prompt);
Pass -> Pass
end.
listify(A) when is_atom(A) ->
atom_to_list(A);
listify(L) when is_list(L) ->
L.
format(Fmt, Args) ->
io:format(Fmt, Args).
trim(Line) when is_list(Line) ->
reverse(trim1(reverse(trim1(Line))));
trim(Other) -> Other.
trim1([$\s|Cs]) -> trim(Cs);
trim1([$\r|Cs]) -> trim(Cs);
trim1([$\n|Cs]) -> trim(Cs);
trim1([$\t|Cs]) -> trim(Cs);
trim1(Cs) -> Cs.
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