summaryrefslogtreecommitdiff
path: root/lib/puppet/parser/functions/reverse.rb
diff options
context:
space:
mode:
Diffstat (limited to 'lib/puppet/parser/functions/reverse.rb')
-rw-r--r--lib/puppet/parser/functions/reverse.rb28
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/reverse.rb b/lib/puppet/parser/functions/reverse.rb
new file mode 100644
index 0000000..fe04869
--- /dev/null
+++ b/lib/puppet/parser/functions/reverse.rb
@@ -0,0 +1,28 @@
+#
+# reverse.rb
+#
+
+module Puppet::Parser::Functions
+ newfunction(:reverse, :type => :rvalue, :doc => <<-EOS
+Reverses the order of a string or array.
+ EOS
+ ) do |arguments|
+
+ raise(Puppet::ParseError, "reverse(): Wrong number of arguments " +
+ "given (#{arguments.size} for 1)") if arguments.size < 1
+
+ value = arguments[0]
+ klass = value.class
+
+ unless [Array, String].include?(klass)
+ raise(Puppet::ParseError, 'reverse(): Requires either ' +
+ 'array or string to work with')
+ end
+
+ result = value.reverse
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :