Module: Remedy::Characters

Defined in:
lib/remedy/characters.rb

Class Method Summary collapse

Class Method Details

.[](sequence_to_match) ⇒ Object 



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# File 'lib/remedy/characters.rb', line 5

def [] sequence_to_match
  all[sequence_to_match]
end

.all ⇒ Object

Character Groups



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# File 'lib/remedy/characters.rb', line 11

def all
  @all ||= printable.merge(nonprintable)
end

.alphabetical ⇒ Object 



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# File 'lib/remedy/characters.rb', line 25

def alphabetical
  @alphabetics ||= get_alphabetics
end

.alternate_names ⇒ Object 



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# File 'lib/remedy/characters.rb', line 153

def alternate_names
  {
    control_a: :start_of_heading,
    control_b: :start_of_text,
    control_c: :end_of_transmission,
    control_d: :end_of_text,
    control_e: :enquiry,
    control_f: :acknowledge,
    control_g: :bel,
    control_h: :backspace,
    control_i: :horizontal_tabulation,
    control_j: :line_feed,
    control_k: :vertical_tabulation,
    control_l: :form_feed,
    control_m: :carriage_return,
    control_n: :shift_out,
    control_o: :shift_in,
    control_p: :data_link_escape,
    control_q: :device_control_one,
    control_r: :device_control_two,
    control_s: :device_control_three,
    control_t: :device_control_four,
    control_u: :negative_acknowledge,
    control_v: :sychnronous_idle,
    control_w: :end_of_transmission_block,
    control_x: :cancel,
    control_y: :end_of_medium,
    control_z: :substitute,

    control_left_square_bracket:  :escape,
    control_backslash:            :file_separator,
    control_right_square_bracket: :group_separator,
    control_caret:                :record_separator,
    control_underscore:           :unit_separator
  }
end

.control ⇒ Object 



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# File 'lib/remedy/characters.rb', line 111

def control
  control_chars = {
    27.chr => :control_left_square_bracket,
    28.chr => :control_backslash,
    29.chr => :control_right_square_bracket,
    30.chr => :control_caret,
    31.chr => :control_underscore,
    127.chr => :delete,
    177.chr => :backspace
  }
  (?a..?z).each.with_index do |letter, index|
    control_chars.merge!({(index + 1).chr => "control_#{letter}".to_sym})
  end

  control_chars
end

.directional ⇒ Object 



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# File 'lib/remedy/characters.rb', line 94

def directional
  @directional ||= {
    "\e[A" => :up,
    "\e[B" => :down,
    "\e[D" => :left,
    "\e[C" => :right
  }
end

.escape ⇒ Object 



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# File 'lib/remedy/characters.rb', line 103

def escape
  @escape ||= {
    "\e" => :escape,

    "\e[3~" => :delete
  }
end

.get_alphabetics ⇒ Object 



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# File 'lib/remedy/characters.rb', line 190

def get_alphabetics
  letters = ('a'..'z').to_a + ('A'..'Z').to_a
  letters.inject(Hash.new) do |alphas, letter|
    alphas[letter] = letter.to_sym
    alphas
  end
end

.gremlins ⇒ Object

Glyphs and Alternate Names



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# File 'lib/remedy/characters.rb', line 130

def gremlins
  {
    space:           "\u2420",
    tab:             "\u21B9",
    carriage_return: "\u23CE",
    line_feed:       "\u240A",

    control_c: "\u2404",
    control_d: "\u2403",
    control_r: "\u2412",

    escape: "\u238B",

    backspace: "\u2408",
    delete:    "\u232B",

    up:    "\u2191",
    down:  "\u2193",
    left:  "\u2190",
    right: "\u2192"
  }
end

.nonprintable ⇒ Object 



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# File 'lib/remedy/characters.rb', line 29

def nonprintable
  @nonprintable ||= special.merge(directional).merge(escape).merge(control)
end

.numeric ⇒ Object 



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# File 'lib/remedy/characters.rb', line 42

def numeric
  @numeric ||= {
    ?0 => :zero,
    ?1 => :one,
    ?2 => :two,
    ?3 => :three,
    ?4 => :four,
    ?5 => :five,
    ?6 => :six,
    ?7 => :seven,
    ?8 => :eight,
    ?9 => :nine
  }
end

.printable ⇒ Object 



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# File 'lib/remedy/characters.rb', line 15

def printable
  @printable ||= whitespace.merge(
    alphabetical.merge(
      numeric.merge(
        punctuation
      )
    )
  )
end

.punctuation ⇒ Object 



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# File 'lib/remedy/characters.rb', line 57

def punctuation
  @punctuation ||= {
    '.' => :period,
    ',' => :comma,
    ':' => :colon,
    ';' => :semicolon,

    '"' => :double_quote,
    "'" => :single_quote,
    '`' => :back_quote,

    '[' => :left_bracket,
    ']' => :right_bracket,
    '(' => :left_paren,
    ')' => :right_paren,

    '^' => :caret,
    '_' => :underscore,
    '-' => :dash,
    '~' => :tilde,

    '!' => :bang,
    '?' => :query,

    '|'       => :solid_pipe,
    "\u00A6"  => :broken_pipe,

    '/'  => :forward_slash,
    "\\" => :back_slash
  }
end

.special ⇒ Object 



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# File 'lib/remedy/characters.rb', line 89

def special
  {
  }
end

.whitespace ⇒ Object 



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# File 'lib/remedy/characters.rb', line 33

def whitespace
  @whitespace ||= {
    ?\s => :space,
    ?\t => :tab,
    ?\r => :carriage_return,
    ?\n => :line_feed
  }
end