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-rw-r--r--lib/kernel/src/group.erl91
1 files changed, 70 insertions, 21 deletions
diff --git a/lib/kernel/src/group.erl b/lib/kernel/src/group.erl
index bf785959ff..e1198d2587 100644
--- a/lib/kernel/src/group.erl
+++ b/lib/kernel/src/group.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2017. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2016. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
@@ -261,11 +261,11 @@ io_request({put_chars,latin1,M,F,As}, Drv, From, Buf) ->
end;
io_request({get_chars,Encoding,Prompt,N}, Drv, _From, Buf) ->
- get_chars(Prompt, io_lib, collect_chars, N, Drv, Buf, Encoding);
+ get_chars_n(Prompt, io_lib, collect_chars, N, Drv, Buf, Encoding);
io_request({get_line,Encoding,Prompt}, Drv, _From, Buf) ->
- get_chars(Prompt, io_lib, collect_line, [], Drv, Buf, Encoding);
+ get_chars_line(Prompt, io_lib, collect_line, [], Drv, Buf, Encoding);
io_request({get_until,Encoding, Prompt,M,F,As}, Drv, _From, Buf) ->
- get_chars(Prompt, io_lib, get_until, {M,F,As}, Drv, Buf, Encoding);
+ get_chars_line(Prompt, io_lib, get_until, {M,F,As}, Drv, Buf, Encoding);
io_request({get_password,_Encoding},Drv,_From,Buf) ->
get_password_chars(Drv, Buf);
io_request({setopts,Opts}, Drv, _From, Buf) when is_list(Opts) ->
@@ -434,7 +434,7 @@ getopts(Drv,Buf) ->
{ok,[Exp,Echo,Bin,Uni],Buf}.
-%% get_chars(Prompt, Module, Function, XtraArgument, Drv, Buffer)
+%% get_chars_*(Prompt, Module, Function, XtraArgument, Drv, Buffer)
%% Gets characters from the input Drv until as the applied function
%% returns {stop,Result,Rest}. Does not block output until input has been
%% received.
@@ -452,12 +452,21 @@ get_password_chars(Drv,Buf) ->
{exit, terminated}
end.
-get_chars(Prompt, M, F, Xa, Drv, Buf, Encoding) ->
+get_chars_n(Prompt, M, F, Xa, Drv, Buf, Encoding) ->
+ Pbs = prompt_bytes(Prompt, Encoding),
+ case get(echo) of
+ true ->
+ get_chars_loop(Pbs, M, F, Xa, Drv, Buf, start, Encoding);
+ false ->
+ get_chars_n_loop(Pbs, M, F, Xa, Drv, Buf, start, Encoding)
+ end.
+
+get_chars_line(Prompt, M, F, Xa, Drv, Buf, Encoding) ->
Pbs = prompt_bytes(Prompt, Encoding),
get_chars_loop(Pbs, M, F, Xa, Drv, Buf, start, Encoding).
get_chars_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
- Result = case get(echo) of
+ Result = case get(echo) of
true ->
get_line(Buf0, Pbs, Drv, Encoding);
false ->
@@ -466,8 +475,8 @@ get_chars_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
get_line_echo_off(Buf0, Pbs, Drv)
end,
case Result of
- {done,Line,Buf1} ->
- get_chars_apply(Pbs, M, F, Xa, Drv, Buf1, State, Line, Encoding);
+ {done,Line,Buf} ->
+ get_chars_apply(Pbs, M, F, Xa, Drv, Buf, State, Line, Encoding);
interrupted ->
{error,{error,interrupted},[]};
terminated ->
@@ -476,12 +485,29 @@ get_chars_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
get_chars_apply(Pbs, M, F, Xa, Drv, Buf, State0, Line, Encoding) ->
case catch M:F(State0, cast(Line,get(read_mode), Encoding), Encoding, Xa) of
- {stop,Result,Rest} ->
- {ok,Result,append(Rest, Buf, Encoding)};
- {'EXIT',_} ->
- {error,{error,err_func(M, F, Xa)},[]};
- State1 ->
- get_chars_loop(Pbs, M, F, Xa, Drv, Buf, State1, Encoding)
+ {stop,Result,Rest} ->
+ {ok,Result,append(Rest, Buf, Encoding)};
+ {'EXIT',_} ->
+ {error,{error,err_func(M, F, Xa)},[]};
+ State1 ->
+ get_chars_loop(Pbs, M, F, Xa, Drv, Buf, State1, Encoding)
+ end.
+
+get_chars_n_loop(Pbs, M, F, Xa, Drv, Buf0, State, Encoding) ->
+ try M:F(State, cast(Buf0, get(read_mode), Encoding), Encoding, Xa) of
+ {stop,Result,Rest} ->
+ {ok, Result, Rest};
+ State1 ->
+ case get_chars_echo_off(Pbs, Drv) of
+ interrupted ->
+ {error,{error,interrupted},[]};
+ terminated ->
+ {exit,terminated};
+ Buf ->
+ get_chars_n_loop(Pbs, M, F, Xa, Drv, Buf, State1, Encoding)
+ end
+ catch _:_ ->
+ {error,{error,err_func(M, F, Xa)},[]}
end.
%% Convert error code to make it look as before
@@ -684,6 +710,29 @@ get_line_echo_off1({Chars,[]}, Drv) ->
get_line_echo_off1({Chars,Rest}, _Drv) ->
{done,lists:reverse(Chars),case Rest of done -> []; _ -> Rest end}.
+get_chars_echo_off(Pbs, Drv) ->
+ send_drv_reqs(Drv, [{put_chars, unicode,Pbs}]),
+ get_chars_echo_off1(Drv).
+
+get_chars_echo_off1(Drv) ->
+ receive
+ {Drv, {data, Cs}} ->
+ Cs;
+ {Drv, eof} ->
+ eof;
+ {io_request,From,ReplyAs,Req} when is_pid(From) ->
+ io_request(Req, From, ReplyAs, Drv, []),
+ get_chars_echo_off1(Drv);
+ {reply,{{From,ReplyAs},Reply}} when From =/= undefined ->
+ %% We take care of replies from puts here as well
+ io_reply(From, ReplyAs, Reply),
+ get_chars_echo_off1(Drv);
+ {'EXIT',Drv,interrupt} ->
+ interrupted;
+ {'EXIT',Drv,_} ->
+ terminated
+ end.
+
%% We support line editing for the ICANON mode except the following
%% line editing characters, which already has another meaning in
%% echo-on mode (See Advanced Programming in the Unix Environment, 2nd ed,
@@ -793,9 +842,9 @@ search_up_stack(Stack, Substr) ->
case up_stack(Stack) of
{none,NewStack} -> {none,NewStack};
{L, NewStack} ->
- case string:str(L, Substr) of
- 0 -> search_up_stack(NewStack, Substr);
- _ -> {string:strip(L,right,$\n), NewStack}
+ case string:find(L, Substr) of
+ nomatch -> search_up_stack(NewStack, Substr);
+ _ -> {string:trim(L, trailing, "$\n"), NewStack}
end
end.
@@ -803,9 +852,9 @@ search_down_stack(Stack, Substr) ->
case down_stack(Stack) of
{none,NewStack} -> {none,NewStack};
{L, NewStack} ->
- case string:str(L, Substr) of
- 0 -> search_down_stack(NewStack, Substr);
- _ -> {string:strip(L,right,$\n), NewStack}
+ case string:find(L, Substr) of
+ nomatch -> search_down_stack(NewStack, Substr);
+ _ -> {string:trim(L, trailing, "$\n"), NewStack}
end
end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 12:10:57 +0000