class Riffer::Rig::Terminal::KeyDecoder

Constants

CSI_KEYS
CSI_U_ENTER
CSI_U_ESCAPE
CSI_U_LEGACY_KEYS: The flag’s exception list keeps Enter, Tab, and Backspace legacy but not the letters sharing their C0 bytes, so Ctrl-J arrives as CSI-u while its legacy byte “\n” decodes as :newline. The table’s second number is the modifier bitfield: 4 = Ctrl, 2 = Alt.
CSI_U_LETTERS
CSI_U_TAB
ESCAPE
MAX_CHARACTER_BYTES
META_KEYS
MODIFIED_CSI_KEYS
PASTE_END
PASTE_START
TILDE_KEYS

Public Class Methods

() → void

Source

# File lib/riffer/rig/terminal/key_decoder.rb, line 49
def initialize
  @state = :ground
  @sequence = +''
end

@rbs return: void

Public Instance Methods

flush ()

() → Array[Riffer::Rig::Terminal::Key]

Source

# File lib/riffer/rig/terminal/key_decoder.rb, line 74
def flush
  # An idle gap inside a paste must not end it: the rest would decode as
  # keystrokes, and its newlines would submit.
  return [] if @state == :paste

  events = case @state
           when :escape then [Riffer::Rig::Terminal::Key.new(:escape)]
           when :character then stray
           else [] #: Array[Riffer::Rig::Terminal::Key]
           end
  @state = :ground
  @sequence = +''
  events
end

@rbs return: Array

pending? ()

() → bool

Source

# File lib/riffer/rig/terminal/key_decoder.rb, line 55
def pending?
  @state != :ground
end

@rbs return: bool

push (byte)

(Integer byte) → Array[Riffer::Rig::Terminal::Key]

Source

# File lib/riffer/rig/terminal/key_decoder.rb, line 61
def push(byte)
  char = byte.chr
  case @state
  when :escape then escape(char)
  when :csi then csi(char)
  when :ss3 then ss3(char)
  when :paste then paste(char)
  when :character then continuation(char)
  else ground(char)
  end
end

@rbs byte: Integer @rbs return: Array