Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/na/colors.rb,
lib/na/string.rb

Overview

Template coloring

Instance Method Summary collapse

Instance Method Details

#highlight_tags(color: '{m}', value: '{y}', parens: '{m}', last_color: '{g}') ⇒ String

Colorize @tags with ANSI escapes

Parameters:

  • color (String) (defaults to: '{m}') —

    color (see #Color)

Returns:

  • (String) —

    string with @tags highlighted



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# File 'lib/na/string.rb', line 20

def highlight_tags(color: '{m}', value: '{y}', parens: '{m}', last_color: '{g}')
  tag_color = NA::Color.template(color)
  paren_color = NA::Color.template(parens)
  value_color = NA::Color.template(value)
  gsub(/(\s|m)(@[^ ("']+)(?:(\()(.*?)(\)))?/, "\\1#{tag_color}\\2#{paren_color}\\3#{value_color}\\4#{paren_color}\\5#{last_color}")
end

#indent_level ⇒ Object 



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# File 'lib/na/string.rb', line 4

def indent_level
  prefix = match(/(^[ \t]+)/)
  return 0 if prefix.nil?

  tabs = prefix[1].gsub(/  /, "\t").scan(/\t/).count

  tabs
end

#last_color_code ⇒ Object

Get the calculated ANSI color at the end of the string

Returns:

  • ANSI escape sequence to match color



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# File 'lib/na/colors.rb', line 138

def last_color_code
  m = scan(ESCAPE_REGEX)

  em = ['0']
  fg = nil
  bg = nil
  rgbf = nil
  rgbb = nil

  m.each do |c|
    case c
    when '0'
      em = ['0']
      fg, bg, rgbf, rgbb = nil
    when /^[34]8/
      case c
      when /^3/
        fg = nil
        rgbf = c
      when /^4/
        bg = nil
        rgbb = c
      end
    else
      c.split(/;/).each do |i|
        x = i.to_i
        if x <= 9
          em << x
        elsif x >= 30 && x <= 39
          rgbf = nil
          fg = x
        elsif x >= 40 && x <= 49
          rgbb = nil
          bg = x
        elsif x >= 90 && x <= 97
          rgbf = nil
          fg = x
        elsif x >= 100 && x <= 107
          rgbb = nil
          bg = x
        end
      end
    end
  end

  escape = "\e[#{em.join(';')}m"
  escape += "\e[#{rgbb}m" if rgbb
  escape += "\e[#{rgbf}m" if rgbf
  escape + "\e[#{[fg, bg].delete_if(&:nil?).join(';')}m"
end

#matches(any: [], all: [], none: []) ⇒ Object 



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# File 'lib/na/string.rb', line 27

def matches(any: [], all: [], none: [])
  matches_any(any) && matches_all(all) && matches_none(none)
end

#matches_all(regexes) ⇒ Object 



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# File 'lib/na/string.rb', line 45

def matches_all(regexes)
  regexes.each do |rx|
    return false unless match(Regexp.new(rx, Regexp::IGNORECASE))
  end
  true
end

#matches_any(regexes) ⇒ Object 



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# File 'lib/na/string.rb', line 38

def matches_any(regexes)
  regexes.each do |rx|
    return true if match(Regexp.new(rx, Regexp::IGNORECASE))
  end
  false
end

#matches_none(regexes) ⇒ Object 



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# File 'lib/na/string.rb', line 31

def matches_none(regexes)
  regexes.each do |rx|
    return false if match(Regexp.new(rx, Regexp::IGNORECASE))
  end
  true
end

#normalize_color ⇒ String

Normalize a color name, removing underscores, replacing “bright” with “bold”, and converting bgbold to boldbg

Returns:

  • (String) —

    Normalized color name



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# File 'lib/na/colors.rb', line 129

def normalize_color
  gsub(/_/, '').sub(/bright/i, 'bold').sub(/bgbold/, 'boldbg')
end

#validate_color ⇒ String

Extract the longest valid %color name from a string.

Allows %colors to bleed into other text and still be recognized, e.g. %greensomething still finds %green.

Returns:

  • (String) —

    a valid color name



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# File 'lib/na/colors.rb', line 111

def validate_color
  valid_color = nil
  compiled = ''
  normalize_color.split('').each do |char|
    compiled += char
    valid_color = compiled if Color.attributes.include?(compiled.to_sym) || compiled =~ /^([fb]g?)?#([a-f0-9]{6})$/i
  end

  valid_color
end