require 'io/console' class Reline::ANSI def self.encoding Encoding.default_external end def self.win? false end RAW_KEYSTROKE_CONFIG = { # Console (80x25) [27, 91, 49, 126] => :ed_move_to_beg, # Home [27, 91, 52, 126] => :ed_move_to_end, # End [27, 91, 51, 126] => :key_delete, # Del [27, 91, 65] => :ed_prev_history, # ↑ [27, 91, 66] => :ed_next_history, # ↓ [27, 91, 67] => :ed_next_char, # → [27, 91, 68] => :ed_prev_char, # ← # KDE [27, 91, 72] => :ed_move_to_beg, # Home [27, 91, 70] => :ed_move_to_end, # End # Del is 0x08 [27, 71, 65] => :ed_prev_history, # ↑ [27, 71, 66] => :ed_next_history, # ↓ [27, 71, 67] => :ed_next_char, # → [27, 71, 68] => :ed_prev_char, # ← # GNOME [27, 79, 72] => :ed_move_to_beg, # Home [27, 79, 70] => :ed_move_to_end, # End # Del is 0x08 # Arrow keys are the same of KDE # others [27, 32] => :em_set_mark, # M- [24, 24] => :em_exchange_mark, # C-x C-x TODO also add Windows [27, 91, 49, 59, 53, 67] => :em_next_word, # Ctrl+→ [27, 91, 49, 59, 53, 68] => :ed_prev_word, # Ctrl+← [27, 79, 65] => :ed_prev_history, # ↑ [27, 79, 66] => :ed_next_history, # ↓ [27, 79, 67] => :ed_next_char, # → [27, 79, 68] => :ed_prev_char, # ← } @@input = STDIN def self.input=(val) @@input = val end @@output = STDOUT def self.output=(val) @@output = val end @@buf = [] def self.getc unless @@buf.empty? return @@buf.shift end c = @@input.raw(intr: true, &:getbyte) (c == 0x16 && @@input.raw(min: 0, tim: 0, &:getbyte)) || c end def self.ungetc(c) @@buf.unshift(c) end def self.retrieve_keybuffer begin result = select([@@input], [], [], 0.001) return if result.nil? str = @@input.read_nonblock(1024) str.bytes.each do |c| @@buf.push(c) end rescue EOFError end end def self.get_screen_size s = @@input.winsize return s if s[0] > 0 && s[1] > 0 s = [ENV["LINES"].to_i, ENV["COLUMNS"].to_i] return s if s[0] > 0 && s[1] > 0 [24, 80] rescue Errno::ENOTTY [24, 80] end def self.set_screen_size(rows, columns) @@input.winsize = [rows, columns] self rescue Errno::ENOTTY self end def self.cursor_pos begin res = '' m = nil @@input.raw do |stdin| @@output << "\e[6n" @@output.flush while (c = stdin.getc) != 'R' res << c if c end m = res.match(/\e\[(?\d+);(?\d+)/) (m.pre_match + m.post_match).chars.reverse_each do |ch| stdin.ungetc ch end end column = m[:column].to_i - 1 row = m[:row].to_i - 1 rescue Errno::ENOTTY buf = @@output.pread(@@output.pos, 0) row = buf.count("\n") column = buf.rindex("\n") ? (buf.size - buf.rindex("\n")) - 1 : 0 end Reline::CursorPos.new(column, row) end def self.move_cursor_column(x) @@output.write "\e[#{x + 1}G" end def self.move_cursor_up(x) if x > 0 @@output.write "\e[#{x}A" if x > 0 elsif x < 0 move_cursor_down(-x) end end def self.move_cursor_down(x) if x > 0 @@output.write "\e[#{x}B" if x > 0 elsif x < 0 move_cursor_up(-x) end end def self.erase_after_cursor @@output.write "\e[K" end def self.scroll_down(x) return if x.zero? @@output.write "\e[#{x}S" end def self.clear_screen @@output.write "\e[2J" @@output.write "\e[1;1H" end @@old_winch_handler = nil def self.set_winch_handler(&handler) @@old_winch_handler = Signal.trap('WINCH', &handler) end def self.prep retrieve_keybuffer int_handle = Signal.trap('INT', 'IGNORE') Signal.trap('INT', int_handle) nil end def self.deprep(otio) int_handle = Signal.trap('INT', 'IGNORE') Signal.trap('INT', int_handle) Signal.trap('WINCH', @@old_winch_handler) if @@old_winch_handler end end