Class: Preflight::Rules::PageCount

Inherits:
Object
  • Object
show all
Defined in:
lib/preflight/rules/page_count.rb

Overview

Ensure the page count matches certain criteria.

Arguments: An integer, range, :even or :odd

Usage:

class MyPreflight
  include Preflight::Profile

  rule Preflight::Rules::PageCount, 1
  rule Preflight::Rules::PageCount, 1..2
  rule Preflight::Rules::PageCount, [4, 8]
  rule Preflight::Rules::PageCount, :even
  rule Preflight::Rules::PageCount, :odd
end

Instance Method Summary collapse

Constructor Details

#initialize(pattern) ⇒ PageCount

Returns a new instance of PageCount.



24
25
26
 
# File 'lib/preflight/rules/page_count.rb', line 24

def initialize(pattern)
  @pattern = pattern
end

Instance Method Details

#check_hash(objects) ⇒ Object 



28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/preflight/rules/page_count.rb', line 28

def check_hash(objects)
  root  = objects.deref(objects.trailer[:Root])
  pages = objects.deref(root[:Pages])
  count = objects.deref(pages[:Count])

  case @pattern
  when Fixnum then check_numeric(count)
  when Range  then check_range(count)
  when Array  then check_array(count)
  when :even  then check_even(count)
  when :odd   then check_odd(count)
  else
    [Issue.new("PageCount: invalid pattern", self)]
  end
end