Class: CLIMarkdown::MDTableCleanup

Inherits:
Object
  • Object
show all
Defined in:
lib/mdless/tables.rb

Constant Summary collapse

PAD_CHAR = 
"\u00A0"

Instance Method Summary collapse

Constructor Details

#initialize(input) ⇒ MDTableCleanup

Returns a new instance of MDTableCleanup.



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# File 'lib/mdless/tables.rb', line 5

def initialize(input)
  @string = input
end

Instance Method Details

#column_width(idx) ⇒ Object 



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# File 'lib/mdless/tables.rb', line 62

def column_width(idx)
  @widths ||= column_widths
  @widths[idx]
end

#column_widths ⇒ Object 



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# File 'lib/mdless/tables.rb', line 67

def column_widths
  @widths = []
  @format_row.length.times do
    @widths.push(0)
  end

  table.each do |row|
    @format_row.each_with_index do |_, i|
      length = row[i].strip.length
      @widths[i] = length if length > @widths[i]
    end
  end

  @widths
end

#header_separator_row ⇒ Object 



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# File 'lib/mdless/tables.rb', line 110

def header_separator_row
  output = []
  @format_row.each_with_index do |column, i|
    output.push separator(column_width(i), column)
  end
  "|#{output.join('|')}|"
end

#pad(string, alignment, length) ⇒ Object 



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# File 'lib/mdless/tables.rb', line 83

def pad(string, alignment, length)
  case alignment
  when :center
    string.strip.center(length, PAD_CHAR)
  when :right
    string.strip.rjust(length, PAD_CHAR)
  when :left
    string.strip.ljust(length, PAD_CHAR)
  else
    string.strip.ljust(length, PAD_CHAR)
  end
end

#parse ⇒ Object 



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# File 'lib/mdless/tables.rb', line 9

def parse
  @format_row = []
  @table = []
  fmt = []
  cols = 0
  rows = @string.split(/\r?\n/)
  rows.each do |row|
    row.strip!
    row.sub!(/^\s*\|?/,'').sub!(/\|?\s*$/,'')
    row_array = row.split(/\|/)
    row_array.map! { |cell| cell.strip }
    if row =~ /^[\|:\- ]+$/
      fmt = row_array
    else
      @table.push row_array
    end
    cols = row_array.length if row_array.length > cols
  end

  fmt.each_with_index do |cell, i|
    cell.strip!
    f = case cell
    when /^:.*?:$/
      :center
    when /[^:]+:$/
      :right
    else
      :just
    end
    @format_row.push(f)
  end

  if @format_row.length < cols
    (cols - @format_row.length).times do
      @format_row.push(:left)
    end
  end

  @table.map! do |row|
    if row.length < cols
      (cols - row.length).times do
        row.push("")
      end
    end
    row
  end
  @table
end

#separator(length, alignment) ⇒ Object 



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# File 'lib/mdless/tables.rb', line 96

def separator(length, alignment)
  out = ''.ljust(length, '-')
  case alignment
  when :left
    ":#{out}-"
  when :right
    "-#{out}:"
  when :center
    ":#{out}:"
  else
    "-#{out}-"
  end
end

#table ⇒ Object 



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# File 'lib/mdless/tables.rb', line 58

def table
  @table ||= parse
end

#table_border ⇒ Object 



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# File 'lib/mdless/tables.rb', line 118

def table_border
  output = []
  @format_row.each_with_index do |column, i|
    output.push separator(column_width(i), column)
  end
  "+#{output.join('+').gsub(/:/,'-')}+"
end

#to_md ⇒ Object 



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# File 'lib/mdless/tables.rb', line 126

def to_md
  output = []
  t = table.clone
  t.each do |row|
    new_row = row.map.with_index { |cell, i| pad(cell, @format_row[i], column_width(i)) }.join(' | ')
    output.push("| #{new_row} |")
  end
  output.insert(1, header_separator_row)
  output.insert(0, table_border)
  output.push(table_border)
  output.join("\n")
end