class BBS::Markdown::Table

A GFM table: a header row, a delimiter row that sets the alignments, and the body rows, drawn as box-drawn ANSI lines.

Public Class Methods

Source

# File lib/bbs/markdown/table.rb, line 18
def self.cells(line)
  s = line.strip
  s = s[1..] if s.start_with?('|')
  s = s[0..-2] if s.end_with?('|')
  s.split('|').map(&:strip)
end

The trimmed cells of a | a | b | row; the leading and the trailing pipe may be missing.

delimiter? (line)

Source

# File lib/bbs/markdown/table.rb, line 9
def self.delimiter?(line)
  return false unless line.include?('-')

  cells = cells(line)
  !cells.empty? && cells.all? { |c| c.match?(DELIMITER_CELL) }
end

Whether line is a table delimiter row, e.g. |---|:--:|---:|.

new (header, delimiter, rows, styles)

Source

# File lib/bbs/markdown/table.rb, line 27
def initialize(header, delimiter, rows, styles)
  @styles = styles
  @ncols  = Table.cells(header).size
  @aligns = aligns(delimiter)
  @rows   = [header, *rows].map do |line|
    cells = Table.cells(line)
    Array.new(@ncols) { |c| Inline.style(cells[c].to_s, styles) }
  end
end

The table of the header line, the delimiter line and the body rows (lines), its cells styled inline with styles.

Public Instance Methods

lines (width)

Source

# File lib/bbs/markdown/table.rb, line 39
def lines(width)
  return [] if @ncols.zero?

  @widths = shrink(natural_widths, [width - (@ncols * 3) - 1, @ncols].max)
  [border('┌', '┬', '┐'), row(@rows.first, header: true), border('├', '┼', '┤'),
   *@rows.drop(1).map { |r| row(r) }, border('└', '┴', '┘')]
end

The lines of the table, fitting width: the widest columns shrink when it overflows. Empty for a table without columns.