Class: Vkit::Core::TableFormatter

Inherits:
Object
  • Object
show all
Defined in:
lib/vkit/core/table_formatter.rb

Class Method Summary collapse

Class Method Details

.border(col_widths) ⇒ Object

Builders



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# File 'lib/vkit/core/table_formatter.rb', line 15

def self.border(col_widths)
  "+" + col_widths.map { |w| "-" * (w + 2) }.join("+") + "+"
end

.render(rows) ⇒ Object 



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# File 'lib/vkit/core/table_formatter.rb', line 4

def self.render(rows)
  return puts "(no rows)" if rows.nil? || rows.empty?

  headers = rows.first.keys

  # Calculate column widths
  col_widths = headers.map do |h|
    [h.length, *rows.map { |r| r[h].to_s.length }].max
  end

  # Builders
  def self.border(col_widths)
    "+" + col_widths.map { |w| "-" * (w + 2) }.join("+") + "+"
  end

  def self.row(values, col_widths)
    "|" + values.map.with_index { |v, i| " #{v.to_s.ljust(col_widths[i])} " }.join("|") + "|"
  end

  # Print table
  puts border(col_widths)
  puts row(headers, col_widths)
  puts border(col_widths)

  rows.each do |row|
    puts row(row.values_at(*headers), col_widths)
  end

  puts border(col_widths)
end

.row(values, col_widths) ⇒ Object 



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# File 'lib/vkit/core/table_formatter.rb', line 19

def self.row(values, col_widths)
  "|" + values.map.with_index { |v, i| " #{v.to_s.ljust(col_widths[i])} " }.join("|") + "|"
end