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-module(klsn_io). |
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-export([ |
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format/1 |
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, format/2 |
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, get_line/0 |
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, get_line/1 |
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]). |
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%% @doc |
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%% Print *Format* (an io:format()-compatible string) to the current |
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%% group leader using UTF-8 encoding. |
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-spec format(io:format()) -> ok. |
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format(Format) -> |
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format(Format, []). |
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%% @doc |
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%% Same as format/1 but with an explicit *Data* list that will be |
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%% interpolated into *Format*. |
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-spec format(io:format(), [term()]) -> ok. |
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format(Format, Data) -> |
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io:format(device(), Format, Data). |
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%% @doc |
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%% Read a single line from STDIN without printing any prompt. The returned |
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%% value is a UTF-8 binary or the atom returned by io:get_line/2 when the |
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%% server signals end-of-file. |
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-spec get_line() -> unicode:unicode_binary() | io:server_no_data(). |
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get_line() -> |
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get_line(<<>>). |
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%% @doc |
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%% Read a single line from STDIN after outputting *Prompt*. |
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-spec get_line(io:prompt()) -> unicode:unicode_binary() | io:server_no_data(). |
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get_line(Prompt) -> |
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io:get_line(device(), Prompt). |
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-spec device() -> io:device(). |
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device() -> |
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Device = erlang:group_leader(), |
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io:setopts(Device, [{encoding,utf8}, {binary, true}]), |
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Device. |
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