| module Puppet::Parser::Functions |
| |
| newfunction(:has_key, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args| |
| determine if a hash has a certain key value. |
| |
| Example: |
| $my_hash = {'key_one' => 'value_one'} |
| if has_key($my_hash, 'key_two') { |
| notice('we will not reach here') |
| } |
| if has_key($my_hash, 'key_one') { |
| notice('this will be printed') |
| } |
| |
| ENDHEREDOC |
| |
| unless args.length == 2 |
| raise Puppet::ParseError, ("has_key(): wrong number of arguments (#{args.length}; must be 2)") |
| end |
| unless args[0].is_a?(Hash) |
| raise Puppet::ParseError, "has_key(): expects the first argument to be a hash, got #{args[0].inspect} which is of type #{args[0].class}" |
| end |
| args[0].has_key?(args[1]) |
| |
| end |
| |
| end |