diff options
Diffstat (limited to 'puppet/modules/stdlib/lib/puppet/parser/functions/empty.rb')
-rw-r--r-- | puppet/modules/stdlib/lib/puppet/parser/functions/empty.rb | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/lib/puppet/parser/functions/empty.rb b/puppet/modules/stdlib/lib/puppet/parser/functions/empty.rb new file mode 100644 index 00000000..cca620fa --- /dev/null +++ b/puppet/modules/stdlib/lib/puppet/parser/functions/empty.rb @@ -0,0 +1,27 @@ +# +# empty.rb +# + +module Puppet::Parser::Functions + newfunction(:empty, :type => :rvalue, :doc => <<-EOS +Returns true if the variable is empty. + EOS + ) do |arguments| + + raise(Puppet::ParseError, "empty(): Wrong number of arguments " + + "given (#{arguments.size} for 1)") if arguments.size < 1 + + value = arguments[0] + + unless value.is_a?(Array) || value.is_a?(Hash) || value.is_a?(String) + raise(Puppet::ParseError, 'empty(): Requires either ' + + 'array, hash or string to work with') + end + + result = value.empty? + + return result + end +end + +# vim: set ts=2 sw=2 et : |