Class: Pangrid::RedditBlank

Inherits:
Plugin
  • Object
show all
Includes:
RedditWriter
Defined in:
lib/pangrid/plugins/reddit.rb

Constant Summary collapse

DESCRIPTION = 
"Reddit format (with blank squares)"

Constants inherited from Plugin

Plugin::FAILED, Plugin::MISSING_DEPS, Plugin::REGISTRY

Instance Method Summary collapse

Methods included from RedditWriter

#format_clues, #write_clues, #write_line, #write_table, #write_xw

Methods inherited from Plugin

class_to_name, get, inherited, list_all, load_all, load_plugin

Methods included from PluginUtils

#check

Instance Method Details

#grid(xw) ⇒ Object 



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# File 'lib/pangrid/plugins/reddit.rb', line 137

def grid(xw)
  xw.to_array({:black => '*.*', :null => ' '}) do |c|
    c.number ? "^#{c.number}" : ''
  end
end

#is_grid_row(line) ⇒ Object 



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# File 'lib/pangrid/plugins/reddit.rb', line 59

def is_grid_row(line)
  line = line.gsub(/\s/, '')
  ix = line.index('|')
  return false unless ix
  c = line[0...ix]
  c == "" || c == "*.*" || c =~ /^(\^\d+)?[[:alpha:]]*$/ # allow partially filled grids
end

#read(data) ⇒ Object 



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# File 'lib/pangrid/plugins/reddit.rb', line 82

def read(data)
  xw = XWord.new
  lines = data.lines.map(&:chomp)

  # split input into grid and clues
  #
  # grid format is from the reddit table markup:
  # cell|cell|...    # table header; first row for us
  # --|--|...        # alignment markers; drop this
  # cell|cell|...    # rest of xword
  #
  # we have to be careful about leading/trailing |s
  ix = lines.find_index {|row| row =~ /^[|\s-]+$/}
  check("Could not find grid") { not ix.nil? }
  width = lines[ix].gsub(/\s/, '').split('|').reject(&:empty?).length
  lines = [lines[(ix - 1)]] + lines[(ix + 1) .. -1]
  grid = lines.take_while {|i| is_grid_row(i)}

  clues = lines[grid.length .. -1]
  clues = lines.reject {|i| i.strip.empty?}

  # strip leading |s
  grid = grid.map {|line| line.sub(/^\|/, '')}
  grid = grid.map {|line| line.split("|", -1)[0..(width-1)]}
  grid = grid.map {|line| line.map(&:strip)}
  xw.width = grid[0].length
  xw.height = grid.length
  xw.solution = []
  check("Grid is not rectangular") { grid.all? {|i| i.length == xw.width} }
  grid = grid.map do |row|
    xw.solution << row.map do |c|
      cell = Cell.new
      if c == '*.*'
        cell.solution = :black
      elsif c =~ /[[:alpha:]]/
        cell.solution = c.gsub(/[^[:alpha:]]/, '')
      else
        cell.solution = :null
      end
      cell
    end
  end

  # Clues
  across, down = xw.number
  aix = clues.find_index {|row| row =~ /^\W*across/i}
  dix = clues.find_index {|row| row =~ /^\W*down/i}
  xw.across_clues = clues[(aix + 1) .. (aix + across.length)]
  xw.down_clues = clues[(dix + 1) .. (dix + down.length)]
  xw.across_clues = strip_clues(across, xw.across_clues)
  xw.down_clues = strip_clues(down, xw.down_clues)

  xw
end

#strip_clues(nums, clues) ⇒ Object

make a best-attempt effort to strip off the clue number



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# File 'lib/pangrid/plugins/reddit.rb', line 68

def strip_clues(nums, clues)
  nums.zip(clues).each_with_index.map do |(n, cl), i|
    b = cl.index(n.to_s)
    if b
      e = b + n.to_s.length
      if cl[0...b] =~ /\W*/ and cl[e + 1] =~ /\W/
        cl[e+1 .. -1].sub(/^\W*\s/, '').strip
      else
        cl.strip
      end
    end
  end
end

#write(xw) ⇒ Object 



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# File 'lib/pangrid/plugins/reddit.rb', line 55

def write(xw)
  write_xw(xw)
end