Read keyboard key.

ReadInStream.jl

using REPL

# +-------+
# | Utils |
# +-------+

read_next_byte(io::IO) = read(io, 1)[1]

function read_stream_bytes(stream::IO)
    queue = UInt8[]

    push!(queue, read_next_byte(stream))

    stream_size = stream.buffer.size
    if stream_size > 1
        for i=1:stream_size-1
            push!(queue, read_next_byte(stream))
        end
    end

    return queue
end

read_stream(stream::IO) = String(read_stream_bytes(stream))

# +-----------+
# | Main loop |
# +-----------+

function run_app(
    t=REPL.Terminals.TTYTerminal(
        get(ENV, "TERM", Sys.iswindows() ? "" : "dumb"),
        stdin, stdout, stderr
    )
)
    REPL.Terminals.raw!(t, true)

    is_running = true
    while is_running
        sequence = read_stream(t.in_stream)
        println(sequence)
        (sequence == "\e") && (println("Shutting down"); is_running = false)
    end

    REPL.Terminals.raw!(t, false)
end

run_app()