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#
# any2bool.rb
#
module Puppet::Parser::Functions
newfunction(:any2bool, :type => :rvalue, :doc => <<-EOS
This converts 'anything' to a boolean. In practise it does the following:
* Strings such as Y,y,1,T,t,TRUE,yes,'true' will return true
* Strings such as 0,F,f,N,n,FALSE,no,'false' will return false
* Booleans will just return their original value
* Number (or a string representation of a number) > 0 will return true, otherwise false
* undef will return false
* Anything else will return true
EOS
) do |arguments|
raise(Puppet::ParseError, "any2bool(): Wrong number of arguments " +
"given (#{arguments.size} for 1)") if arguments.size < 1
# If argument is already Boolean, return it
if !!arguments[0] == arguments[0]
return arguments[0]
end
arg = arguments[0]
if arg == nil
return false
end
if arg == :undef
return false
end
valid_float = !!Float(arg) rescue false
if arg.is_a?(Numeric)
return function_num2bool( [ arguments[0] ] )
end
if arg.is_a?(String)
if valid_float
return function_num2bool( [ arguments[0] ] )
else
return function_str2bool( [ arguments[0] ] )
end
end
return true
end
end
# vim: set ts=2 sw=2 et :
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