Puppet Function: to_bytes
- Defined in:
- puppet/modules/stdlib/lib/puppet/parser/functions/to_bytes.rb
- Function type:
- Ruby 3.x API
Overview
Converts the argument into bytes, for example 4 kB becomes 4096. Takes a single string value as an argument. These conversions reflect a layperson's understanding of 1 MB = 1024 KB, when in fact 1 MB = 1000 KB, and 1 MiB = 1024 KiB.
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 |
# File 'puppet/modules/stdlib/lib/puppet/parser/functions/to_bytes.rb', line 2 newfunction(:to_bytes, :type => :rvalue, :doc => <<-EOS Converts the argument into bytes, for example 4 kB becomes 4096. Takes a single string value as an argument. These conversions reflect a layperson's understanding of 1 MB = 1024 KB, when in fact 1 MB = 1000 KB, and 1 MiB = 1024 KiB. EOS ) do |arguments| raise(Puppet::ParseError, "to_bytes(): Wrong number of arguments " + "given (#{arguments.size} for 1)") if arguments.size != 1 arg = arguments[0] return arg if arg.is_a? Numeric value,prefix = */([0-9.e+-]*)\s*([^bB]?)/.match(arg)[1,2] value = value.to_f case prefix when '' then return value.to_i when 'k' then return (value*(1<<10)).to_i when 'M' then return (value*(1<<20)).to_i when 'G' then return (value*(1<<30)).to_i when 'T' then return (value*(1<<40)).to_i when 'P' then return (value*(1<<50)).to_i when 'E' then return (value*(1<<60)).to_i else raise Puppet::ParseError, "to_bytes(): Unknown prefix #{prefix}" end end |