class PDD::Rule::MaxDuplicates

Rule for max duplicates.

Public Class Methods

new(xml, max) click to toggle source

Ctor.

xml

XML with puzzles

# File lib/pdd/rule/duplicates.rb, line 27
def initialize(xml, max)
  @xml = xml
  @max = max.to_i
end

Public Instance Methods

errors() click to toggle source
# File lib/pdd/rule/duplicates.rb, line 32
def errors
  @xml
    .xpath('//puzzle')
    .group_by { |p| p.xpath('body/text()').to_s }
    .map do |_, puzzles|
      next nil if puzzles.count <= @max
      "there are #{puzzles.count} duplicate(s) of the same puzzle: " +
        puzzles.map do |p|
          "#{p.xpath('file/text()')}:#{p.xpath('lines/text()')}"
        end.join(', ') +
        ", while maximum #{@max} duplicate is allowed"
    end.compact
end