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Edit File : ansi.rb \| Size : 9.13 KB
require 'io/console' require 'io/wait' require 'timeout' require_relative 'terminfo' class Reline::ANSI CAPNAME_KEY_BINDINGS = { 'khome' => :ed_move_to_beg, 'kend' => :ed_move_to_end, 'kcuu1' => :ed_prev_history, 'kcud1' => :ed_next_history, 'kcuf1' => :ed_next_char, 'kcub1' => :ed_prev_char, 'cuu' => :ed_prev_history, 'cud' => :ed_next_history, 'cuf' => :ed_next_char, 'cub' => :ed_prev_char, } if Reline::Terminfo.enabled? Reline::Terminfo.setupterm(0, 2) end def self.encoding Encoding.default_external end def self.win? false end def self.set_default_key_bindings(config) if Reline::Terminfo.enabled? set_default_key_bindings_terminfo(config) else set_default_key_bindings_comprehensive_list(config) end { # extended entries of terminfo [27, 91, 49, 59, 53, 67] => :em_next_word, # Ctrl+→, extended entry [27, 91, 49, 59, 53, 68] => :ed_prev_word, # Ctrl+←, extended entry [27, 91, 49, 59, 51, 67] => :em_next_word, # Meta+→, extended entry [27, 91, 49, 59, 51, 68] => :ed_prev_word, # Meta+←, extended entry }.each_pair do \|key, func\| config.add_default_key_binding_by_keymap(:emacs, key, func) config.add_default_key_binding_by_keymap(:vi_insert, key, func) config.add_default_key_binding_by_keymap(:vi_command, key, func) end { [27, 91, 90] => :completion_journey_up, # S-Tab }.each_pair do \|key, func\| config.add_default_key_binding_by_keymap(:emacs, key, func) config.add_default_key_binding_by_keymap(:vi_insert, key, func) end { # default bindings [27, 32] => :em_set_mark, # M-<space> [24, 24] => :em_exchange_mark, # C-x C-x }.each_pair do \|key, func\| config.add_default_key_binding_by_keymap(:emacs, key, func) end end def self.set_default_key_bindings_terminfo(config) key_bindings = CAPNAME_KEY_BINDINGS.map do \|capname, key_binding\| begin key_code = Reline::Terminfo.tigetstr(capname) case capname # Escape sequences that omit the move distance and are set to defaults # value 1 may be sometimes sent by pressing the arrow-key. when 'cuu', 'cud', 'cuf', 'cub' [ key_code.sub(/%p1%d/, '').bytes, key_binding ] else [ key_code.bytes, key_binding ] end rescue Reline::Terminfo::TerminfoError # capname is undefined end end.compact.to_h key_bindings.each_pair do \|key, func\| config.add_default_key_binding_by_keymap(:emacs, key, func) config.add_default_key_binding_by_keymap(:vi_insert, key, func) config.add_default_key_binding_by_keymap(:vi_command, key, func) end end def self.set_default_key_bindings_comprehensive_list(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, # ← # urxvt / exoterm [27, 91, 55, 126] => :ed_move_to_beg, # Home [27, 91, 56, 126] => :ed_move_to_end, # End # 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 # iTerm2 [27, 27, 91, 67] => :em_next_word, # Option+→, extended entry [27, 27, 91, 68] => :ed_prev_word, # Option+←, extended entry [195, 166] => :em_next_word, # Option+f [195, 162] => :ed_prev_word, # Option+b [27, 79, 65] => :ed_prev_history, # ↑ [27, 79, 66] => :ed_next_history, # ↓ [27, 79, 67] => :ed_next_char, # → [27, 79, 68] => :ed_prev_char, # ← }.each_pair do \|key, func\| config.add_default_key_binding_by_keymap(:emacs, key, func) config.add_default_key_binding_by_keymap(:vi_insert, key, func) config.add_default_key_binding_by_keymap(:vi_command, key, func) end end @@input = STDIN def self.input=(val) @@input = val end @@output = STDOUT def self.output=(val) @@output = val end @@buf = [] def self.inner_getc unless @@buf.empty? return @@buf.shift end until c = @@input.raw(intr: true) { @@input.wait_readable(0.1) && @@input.getbyte } Reline.core.line_editor.resize end (c == 0x16 && @@input.raw(min: 0, time: 0, &:getbyte)) \|\| c rescue Errno::EIO # Maybe the I/O has been closed. nil rescue Errno::ENOTTY nil end @@in_bracketed_paste_mode = false START_BRACKETED_PASTE = String.new("\e[200~,", encoding: Encoding::ASCII_8BIT) END_BRACKETED_PASTE = String.new("\e[200~.", encoding: Encoding::ASCII_8BIT) def self.getc_with_bracketed_paste buffer = String.new(encoding: Encoding::ASCII_8BIT) buffer << inner_getc while START_BRACKETED_PASTE.start_with?(buffer) or END_BRACKETED_PASTE.start_with?(buffer) do if START_BRACKETED_PASTE == buffer @@in_bracketed_paste_mode = true return inner_getc elsif END_BRACKETED_PASTE == buffer @@in_bracketed_paste_mode = false ungetc(-1) return inner_getc end begin succ_c = nil Timeout.timeout(Reline.core.config.keyseq_timeout * 100) { succ_c = inner_getc } rescue Timeout::Error break else buffer << succ_c end end buffer.bytes.reverse_each do \|ch\| ungetc ch end inner_getc end def self.getc if Reline.core.config.enable_bracketed_paste getc_with_bracketed_paste else inner_getc end end def self.in_pasting? @@in_bracketed_paste_mode or (not Reline::IOGate.empty_buffer?) end def self.empty_buffer? unless @@buf.empty? return false end !@@input.wait_readable(0) end def self.ungetc(c) @@buf.unshift(c) end def self.retrieve_keybuffer begin return unless @@input.wait_readable(0.001) 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 loop do c = stdin.getc next if c.nil? res << c m = res.match(/\e\[(?<row>\d+);(?<column>\d+)R/) break if m end (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 begin buf = @@output.pread(@@output.pos, 0) row = buf.count("\n") column = buf.rindex("\n") ? (buf.size - buf.rindex("\n")) - 1 : 0 rescue Errno::ESPIPE # Just returns column 1 for ambiguous width because this I/O is not # tty and can't seek. row = 0 column = 1 end 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" elsif x < 0 move_cursor_down(-x) end end def self.move_cursor_down(x) if x > 0 @@output.write "\e[#{x}B" elsif x < 0 move_cursor_up(-x) end end def self.hide_cursor if Reline::Terminfo.enabled? begin @@output.write Reline::Terminfo.tigetstr('civis') rescue Reline::Terminfo::TerminfoError # civis is undefined end else # ignored end end def self.show_cursor if Reline::Terminfo.enabled? begin @@output.write Reline::Terminfo.tigetstr('cnorm') rescue Reline::Terminfo::TerminfoError # cnorm is undefined end else # ignored 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 nil end def self.deprep(otio) Signal.trap('WINCH', @@old_winch_handler) if @@old_winch_handler end end Back

Edit File : ansi.rb | Size : 9.13 KB

require 'io/console'
require 'io/wait'
require 'timeout'
require_relative 'terminfo'

class Reline::ANSI
  CAPNAME_KEY_BINDINGS = {
    'khome' => :ed_move_to_beg,
    'kend'  => :ed_move_to_end,
    'kcuu1' => :ed_prev_history,
    'kcud1' => :ed_next_history,
    'kcuf1' => :ed_next_char,
    'kcub1' => :ed_prev_char,
    'cuu' => :ed_prev_history,
    'cud' => :ed_next_history,
    'cuf' => :ed_next_char,
    'cub' => :ed_prev_char,
  }

if Reline::Terminfo.enabled?
    Reline::Terminfo.setupterm(0, 2)
  end

def self.encoding
    Encoding.default_external
  end

def self.win?
    false
  end

def self.set_default_key_bindings(config)
    if Reline::Terminfo.enabled?
      set_default_key_bindings_terminfo(config)
    else
      set_default_key_bindings_comprehensive_list(config)
    end
    {
      # extended entries of terminfo
      [27, 91, 49, 59, 53, 67] => :em_next_word, # Ctrl+→, extended entry
      [27, 91, 49, 59, 53, 68] => :ed_prev_word, # Ctrl+←, extended entry
      [27, 91, 49, 59, 51, 67] => :em_next_word, # Meta+→, extended entry
      [27, 91, 49, 59, 51, 68] => :ed_prev_word, # Meta+←, extended entry
    }.each_pair do |key, func|
      config.add_default_key_binding_by_keymap(:emacs, key, func)
      config.add_default_key_binding_by_keymap(:vi_insert, key, func)
      config.add_default_key_binding_by_keymap(:vi_command, key, func)
    end
    {
      [27, 91, 90] => :completion_journey_up, # S-Tab
    }.each_pair do |key, func|
      config.add_default_key_binding_by_keymap(:emacs, key, func)
      config.add_default_key_binding_by_keymap(:vi_insert, key, func)
    end
    {
      # default bindings
      [27, 32] => :em_set_mark,             # M-<space>
      [24, 24] => :em_exchange_mark,        # C-x C-x
    }.each_pair do |key, func|
      config.add_default_key_binding_by_keymap(:emacs, key, func)
    end
  end

def self.set_default_key_bindings_terminfo(config)
    key_bindings = CAPNAME_KEY_BINDINGS.map do |capname, key_binding|
      begin
        key_code = Reline::Terminfo.tigetstr(capname)
        case capname
        # Escape sequences that omit the move distance and are set to defaults
        # value 1 may be sometimes sent by pressing the arrow-key.
        when 'cuu', 'cud', 'cuf', 'cub'
          [ key_code.sub(/%p1%d/, '').bytes, key_binding ]
        else
          [ key_code.bytes, key_binding ]
        end
      rescue Reline::Terminfo::TerminfoError
        # capname is undefined
      end
    end.compact.to_h

key_bindings.each_pair do |key, func|
      config.add_default_key_binding_by_keymap(:emacs, key, func)
      config.add_default_key_binding_by_keymap(:vi_insert, key, func)
      config.add_default_key_binding_by_keymap(:vi_command, key, func)
    end
  end

def self.set_default_key_bindings_comprehensive_list(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,        # ←

# urxvt / exoterm
      [27, 91, 55, 126] => :ed_move_to_beg, # Home
      [27, 91, 56, 126] => :ed_move_to_end, # End

# 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

# iTerm2
      [27, 27, 91, 67] => :em_next_word,    # Option+→, extended entry
      [27, 27, 91, 68] => :ed_prev_word,    # Option+←, extended entry
      [195, 166] => :em_next_word,          # Option+f
      [195, 162] => :ed_prev_word,          # Option+b

[27, 79, 65] => :ed_prev_history,     # ↑
      [27, 79, 66] => :ed_next_history,     # ↓
      [27, 79, 67] => :ed_next_char,        # →
      [27, 79, 68] => :ed_prev_char,        # ←
    }.each_pair do |key, func|
      config.add_default_key_binding_by_keymap(:emacs, key, func)
      config.add_default_key_binding_by_keymap(:vi_insert, key, func)
      config.add_default_key_binding_by_keymap(:vi_command, key, func)
    end
  end

@@input = STDIN
  def self.input=(val)
    @@input = val
  end

@@output = STDOUT
  def self.output=(val)
    @@output = val
  end

@@buf = []
  def self.inner_getc
    unless @@buf.empty?
      return @@buf.shift
    end
    until c = @@input.raw(intr: true) { @@input.wait_readable(0.1) && @@input.getbyte }
      Reline.core.line_editor.resize
    end
    (c == 0x16 && @@input.raw(min: 0, time: 0, &:getbyte)) || c
  rescue Errno::EIO
    # Maybe the I/O has been closed.
    nil
  rescue Errno::ENOTTY
    nil
  end

@@in_bracketed_paste_mode = false
  START_BRACKETED_PASTE = String.new("\e[200~,", encoding: Encoding::ASCII_8BIT)
  END_BRACKETED_PASTE = String.new("\e[200~.", encoding: Encoding::ASCII_8BIT)
  def self.getc_with_bracketed_paste
    buffer = String.new(encoding: Encoding::ASCII_8BIT)
    buffer << inner_getc
    while START_BRACKETED_PASTE.start_with?(buffer) or END_BRACKETED_PASTE.start_with?(buffer) do
      if START_BRACKETED_PASTE == buffer
        @@in_bracketed_paste_mode = true
        return inner_getc
      elsif END_BRACKETED_PASTE == buffer
        @@in_bracketed_paste_mode = false
        ungetc(-1)
        return inner_getc
      end
      begin
        succ_c = nil
        Timeout.timeout(Reline.core.config.keyseq_timeout * 100) {
          succ_c = inner_getc
        }
      rescue Timeout::Error
        break
      else
        buffer << succ_c
      end
    end
    buffer.bytes.reverse_each do |ch|
      ungetc ch
    end
    inner_getc
  end

def self.getc
    if Reline.core.config.enable_bracketed_paste
      getc_with_bracketed_paste
    else
      inner_getc
    end
  end

def self.in_pasting?
    @@in_bracketed_paste_mode or (not Reline::IOGate.empty_buffer?)
  end

def self.empty_buffer?
    unless @@buf.empty?
      return false
    end
    !@@input.wait_readable(0)
  end

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

def self.retrieve_keybuffer
    begin
      return unless @@input.wait_readable(0.001)
      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
        loop do
          c = stdin.getc
          next if c.nil?
          res << c
          m = res.match(/\e\[(?<row>\d+);(?<column>\d+)R/)
          break if m
        end
        (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
      begin
        buf = @@output.pread(@@output.pos, 0)
        row = buf.count("\n")
        column = buf.rindex("\n") ? (buf.size - buf.rindex("\n")) - 1 : 0
      rescue Errno::ESPIPE
        # Just returns column 1 for ambiguous width because this I/O is not
        # tty and can't seek.
        row = 0
        column = 1
      end
    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"
    elsif x < 0
      move_cursor_down(-x)
    end
  end

def self.move_cursor_down(x)
    if x > 0
      @@output.write "\e[#{x}B"
    elsif x < 0
      move_cursor_up(-x)
    end
  end

def self.hide_cursor
    if Reline::Terminfo.enabled?
      begin
        @@output.write Reline::Terminfo.tigetstr('civis')
      rescue Reline::Terminfo::TerminfoError
        # civis is undefined
      end
    else
      # ignored
    end
  end

def self.show_cursor
    if Reline::Terminfo.enabled?
      begin
        @@output.write Reline::Terminfo.tigetstr('cnorm')
      rescue Reline::Terminfo::TerminfoError
        # cnorm is undefined
      end
    else
      # ignored
    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
    nil
  end

def self.deprep(otio)
    Signal.trap('WINCH', @@old_winch_handler) if @@old_winch_handler
  end
end

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