diff options
Diffstat (limited to 'code/environments/production/modules/stdlib/lib/puppet/parser/functions/has_key.rb')
-rw-r--r-- | code/environments/production/modules/stdlib/lib/puppet/parser/functions/has_key.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/code/environments/production/modules/stdlib/lib/puppet/parser/functions/has_key.rb b/code/environments/production/modules/stdlib/lib/puppet/parser/functions/has_key.rb new file mode 100644 index 0000000..53b8c74 --- /dev/null +++ b/code/environments/production/modules/stdlib/lib/puppet/parser/functions/has_key.rb @@ -0,0 +1,28 @@ +# +# has_key.rb +# +module Puppet::Parser::Functions + newfunction(:has_key, :type => :rvalue, :doc => <<-'DOC') 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') + } + + DOC + + 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].key?(args[1]) + end +end |