Class: VisualWidth::Table

Inherits:
Object
  • Object
show all
Includes:
VisualWidth
Defined in:
lib/visual_width/table.rb

Constant Summary

Constants included from VisualWidth

Ambiguous, EAST_ASIAN, Fullwide, VERSION, Wide

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from VisualWidth

count, each_width, measure, truncate

Constructor Details

#initialize(header: nil, style: [], east_asian: VisualWidth::EAST_ASIAN) ⇒ Table

Returns a new instance of Table.



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# File 'lib/visual_width/table.rb', line 9

def initialize(header: nil, style: [], east_asian: VisualWidth::EAST_ASIAN)
  @header = header
  @style  = style.clone
  @east_asian = east_asian
  @padding = ' '

  if header
    header.length.times do |i|
      @style[i] ||= {}
    end
  end

  widths = @style.map { |s| s[:width] }
  @needs_wrap = widths.any?
  if header
    @header_widths = calc_max_widths([header])
  end
end

Instance Attribute Details

#header ⇒ Object

Returns the value of attribute header.



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# File 'lib/visual_width/table.rb', line 7

def header
  @header
end

#style ⇒ Object

Returns the value of attribute style.



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# File 'lib/visual_width/table.rb', line 7

def style
  @style
end

Instance Method Details

#draw(*args) ⇒ Object 



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# File 'lib/visual_width/table.rb', line 67

def draw(*args)
  warn "draw() is deprecated. Use render() instead."
  render(*args)
end

#render(rows, output: "") ⇒ Object 



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# File 'lib/visual_width/table.rb', line 28

def render(rows, output: "")
  if @needs_wrap
    rows = rows.map do |row|
      i = 0
      row.map do |cell|
        cell = "#{cell}"
        style = (@style[i] ||= {})
        width = style[:width]
        i += 1
        if width
          wrap(cell, width)
        else
          cell
        end
      end
    end
  end
  max_widths = calc_max_widths(rows)
  if @header
    header_style = []
    max_widths = @header_widths
      .zip(max_widths)
      .map { |values| values.max }
    @header.length.times do |i|
      style = (@style[i] ||= {})
      header_style << style.merge(align: :center)
    end
    draw_header(output, max_widths, header_style, @header)
  else
    line(output, max_widths)
  end

  rows.each do |row|
    draw_row(output, max_widths, @style, row)
  end
  line(output, max_widths)
  output
end