summaryrefslogtreecommitdiff
path: root/lib/puppet/parser/functions/keys.rb
diff options
context:
space:
mode:
Diffstat (limited to 'lib/puppet/parser/functions/keys.rb')
-rw-r--r--lib/puppet/parser/functions/keys.rb26
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/keys.rb b/lib/puppet/parser/functions/keys.rb
new file mode 100644
index 0000000..f0d13b6
--- /dev/null
+++ b/lib/puppet/parser/functions/keys.rb
@@ -0,0 +1,26 @@
+#
+# keys.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:keys, :type => :rvalue, :doc => <<-EOS
+Returns the keys of a hash as an array.
+ EOS
+ ) do |arguments|
+
+ raise(Puppet::ParseError, "keys(): Wrong number of arguments " +
+ "given (#{arguments.size} for 1)") if arguments.size < 1
+
+ hash = arguments[0]
+
+ unless hash.is_a?(Hash)
+ raise(Puppet::ParseError, 'keys(): Requires hash to work with')
+ end
+
+ result = hash.keys
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :