Mercurial > repos > other > Puppet
view modules/stdlib/lib/puppet/parser/functions/is_integer.rb @ 37:addb0ea390a1 puppet-3.6
Update Puppet "stdlib" module
author | IBBoard <dev@ibboard.co.uk> |
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date | Sat, 14 Mar 2015 20:09:45 +0000 |
parents | 956e484adc12 |
children | c42fb28cff86 |
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# # is_integer.rb # module Puppet::Parser::Functions newfunction(:is_integer, :type => :rvalue, :doc => <<-EOS Returns true if the variable passed to this function is an Integer or a decimal (base 10) integer in String form. The string may start with a '-' (minus). A value of '0' is allowed, but a leading '0' digit may not be followed by other digits as this indicates that the value is octal (base 8). If given any other argument `false` is returned. EOS ) do |arguments| if (arguments.size != 1) then raise(Puppet::ParseError, "is_integer(): Wrong number of arguments "+ "given #{arguments.size} for 1") end value = arguments[0] # Regex is taken from the lexer of puppet # puppet/pops/parser/lexer.rb but modified to match also # negative values and disallow numbers prefixed with multiple # 0's # # TODO these parameter should be a constant but I'm not sure # if there is no risk to declare it inside of the module # Puppet::Parser::Functions # Integer numbers like # -1234568981273 # 47291 numeric = %r{^-?(?:(?:[1-9]\d*)|0)$} if value.is_a? Integer or (value.is_a? String and value.match numeric) return true else return false end end end # vim: set ts=2 sw=2 et :