summaryrefslogtreecommitdiff
path: root/lib/reline/io/dumb.rb
blob: 0c04c755d2fbb30acb47126e78c1e6ac75cddc7f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
require 'io/wait'

class Reline::Dumb < Reline::IO
  RESET_COLOR = '' # Do not send color reset sequence

  attr_writer :output

  def initialize(encoding: nil)
    @input = STDIN
    @output = STDOUT
    @buf = []
    @pasting = false
    @encoding = encoding
    @screen_size = [24, 80]
  end

  def dumb?
    true
  end

  def encoding
    if @encoding
      @encoding
    elsif RUBY_PLATFORM =~ /mswin|mingw/
      Encoding::UTF_8
    else
      @input.external_encoding || Encoding.default_external
    end
  rescue IOError
    # STDIN.external_encoding raises IOError in Ruby <= 3.0 when STDIN is closed
    Encoding.default_external
  end

  def set_default_key_bindings(_)
  end

  def input=(val)
    @input = val
  end

  def with_raw_input
    yield
  end

  def write(string)
    @output.write(string)
  end

  def buffered_output
    yield
  end

  def getc(_timeout_second)
    unless @buf.empty?
      return @buf.shift
    end
    c = nil
    loop do
      Reline.core.line_editor.handle_signal
      result = @input.wait_readable(0.1)
      next if result.nil?
      c = @input.read(1)
      break
    end
    c&.ord
  end

  def ungetc(c)
    @buf.unshift(c)
  end

  def get_screen_size
    @screen_size
  end

  def cursor_pos
    Reline::CursorPos.new(0, 0)
  end

  def hide_cursor
  end

  def show_cursor
  end

  def move_cursor_column(val)
  end

  def move_cursor_up(val)
  end

  def move_cursor_down(val)
  end

  def erase_after_cursor
  end

  def scroll_down(val)
  end

  def clear_screen
  end

  def set_screen_size(rows, columns)
    @screen_size = [rows, columns]
  end

  def set_winch_handler(&handler)
  end

  def in_pasting?
    @pasting
  end

  def prep
  end

  def deprep(otio)
  end
end