Class: Columnist::Column

Inherits:
Object
  • Object
show all
Includes:
OptionsValidator
Defined in:
lib/columnist/column.rb

Constant Summary collapse

VALID_OPTIONS = 
[:width, :padding, :align, :color, :bold, :underline, :reversed]

Instance Method Summary collapse

Methods included from OptionsValidator

#validate_options

Constructor Details

#initialize(text = nil, options = {}) ⇒ Column

Returns a new instance of Column.

Raises:

  • (ArgumentError) 


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# File 'lib/columnist/column.rb', line 10

def initialize(text = nil, options = {})
    self.validate_options(options, *VALID_OPTIONS)
    self.text_without_colors = text.to_s.gsub(/(.)\[\d{1,3};\d{1,3};\d{1,3}m/, '')
    self.text                = text.to_s
    self.width               = options[:width] || 10
    self.align               = options[:align] || 'left'
    self.padding             = options[:padding] || 0
    self.color               = options[:color] || nil
    self.bold                = options[:bold] || false
    self.underline           = options[:underline] || false
    self.reversed            = options[:reversed] || false
    raise ArgumentError unless self.width > 0
    raise ArgumentError unless self.padding.to_s.match(/^\d+$/)
end

Instance Method Details

#required_width ⇒ Object 



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# File 'lib/columnist/column.rb', line 29

def required_width
    self.text_without_colors.to_s.size + 2 * self.padding
end

#screen_rows ⇒ Object 



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# File 'lib/columnist/column.rb', line 33

def screen_rows
    if self.text_without_colors.nil? || self.text_without_colors.empty?
        [' ' * self.width]
    else
        x = self.text.scan(/.{1,#{self.size}}/).map { |s| to_cell(s) }
        if x.length > 1
            actual_length = 0
            x.each do |z|
                z                    = z.gsub(/\A(.)\[\d{1,3};\d{1,3};\d{1,3}m/, '').gsub(/\s+(.)\[\d{1,3};\d{1,3};\d{1,3}m\z/, '')
                characters_to_ignore = 0
                matches_to_ignore    = z.scan(/\[\d{1,3};\d{1,3};\d{1,3}m/)
                matches_to_ignore.each do |match|
                    characters_to_ignore += match.length + 1
                end
                actual_length += z.length - characters_to_ignore
            end
            if actual_length < self.size
                y = []
                x.each do |z|
                    y << z.gsub(/\A(.)\[\d{1,3};\d{1,3};\d{1,3}m/, '').gsub(/\s+(.)\[\d{1,3};\d{1,3};\d{1,3}m\z/, '')
                end
                y = ["#{y.join}#{' ' * (self.size - actual_length)}"]
                return y
            end
            return [x[0]]
        else
            return x
        end
    end
end

#size ⇒ Object 



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# File 'lib/columnist/column.rb', line 25

def size
    self.width - 2 * self.padding
end