diff options
Diffstat (limited to 'lib/puppet/parser')
-rw-r--r-- | lib/puppet/parser/functions/any2bool.rb | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/any2bool.rb b/lib/puppet/parser/functions/any2bool.rb new file mode 100644 index 0000000..f0f8f83 --- /dev/null +++ b/lib/puppet/parser/functions/any2bool.rb @@ -0,0 +1,55 @@ +# +# 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 : |