summaryrefslogtreecommitdiff
path: root/lib/puppet/parser/functions/min.rb
blob: 6bd6ebf20cf364c1aa0595165b9e2f0db9aa24e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
module Puppet::Parser::Functions
  newfunction(:min, :type => :rvalue, :doc => <<-EOS
    Returns the lowest value of all arguments.
    Requires at least one argument.
    EOS
  ) do |args|

    raise(Puppet::ParseError, "min(): Wrong number of arguments " +
          "need at least one") if args.size == 0

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