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Edit File : ansi.rb \| Size : 4.73 KB
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, # ← # 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+→ [27, 27, 91, 68] => :ed_prev_word, # Option+← [195, 166] => :em_next_word, # Option+f [195, 162] => :ed_prev_word, # Option+b # others [27, 32] => :em_set_mark, # M-<space> [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 until c = @@input.raw(intr: true, &:getbyte) sleep 0.1 end (c == 0x16 && @@input.raw(min: 0, tim: 0, &:getbyte)) \|\| c rescue Errno::EIO # Maybe the I/O has been closed. nil 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 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" 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 Back

Edit File : ansi.rb | Size : 4.73 KB

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,        # ←

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

# others
    [27, 32] => :em_set_mark,             # M-<space>
    [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
    until c = @@input.raw(intr: true, &:getbyte)
      sleep 0.1
    end
    (c == 0x16 && @@input.raw(min: 0, tim: 0, &:getbyte)) || c
  rescue Errno::EIO
    # Maybe the I/O has been closed.
    nil
  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
        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" 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

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