class Chamomile::EscapeParser

State-machine parser for ANSI escape sequences, CSI params, SGR mouse, and bracketed paste.

Constants

CSI_ENTRY
ESC_SEEN
GROUND: States
MAX_PASTE_SIZE: Maximum paste buffer size (1MB) to prevent memory exhaustion
MODIFIER_MAP: CSI modifier mapping (xterm-style: param 2=Shift, 3=Alt, 4=Shift+Alt, 5=Ctrl, etc.)
PASTE
PASTE_END
PASTE_START
SS3

Public Class Methods

Source

# File lib/chamomile/escape_parser.rb, line 30
def initialize
  @state = GROUND
  @buf = +""
  @paste_buf = +""
end

Public Instance Methods

feed (bytes, &block)

Source

# File lib/chamomile/escape_parser.rb, line 37
def feed(bytes, &block)
  bytes.each_char { |ch| process_char(ch, &block) }
end

Feed raw bytes into the parser, yielding parsed messages.

timeout! () { |key_event(key: :escape, mod: [])| ... }

Source

# File lib/chamomile/escape_parser.rb, line 42
def timeout!
  return unless @state == ESC_SEEN

  @state = GROUND
  @buf.clear
  yield KeyEvent.new(key: :escape, mod: [])
end

Call when IO.select times out — flushes ambiguous ESC as :escape key.