Puppet Function: max

Defined in:
modules/stdlib/lib/puppet/parser/functions/max.rb
Function type:
Ruby 3.x API

Overview

max()Any

Returns the highest value of all arguments. Requires at least one argument.

Returns:

  • (Any)


5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
# File 'modules/stdlib/lib/puppet/parser/functions/max.rb', line 5

newfunction(:max, :type => :rvalue, :doc => <<-DOC
  Returns the highest value of all arguments.
  Requires at least one argument.
  DOC
           ) do |args|

  raise(Puppet::ParseError, 'max(): Wrong number of arguments need at least one') if args.empty?

  # Sometimes we get numbers as numerics and sometimes as strings.
  # We try to compare them as numbers when possible
  return args.max do |a, b|
    if a.to_s =~ %r{\A-?\d+(.\d+)?\z} && b.to_s =~ %r{\A-?\d+(.\d+)?\z}
      a.to_f <=> b.to_f
    else
      a.to_s <=> b.to_s
    end
  end
end