(#19998) Implement any2array

This change is to implement a new function "any2array", which will take any
argument or arguments and create an array which contains it. If the argument
is a single array then it will be returned as-is. If the argument is a single
hash then it will be converted into an array. Otherwise (if there are more than
one argument, or the only argument is not an array or a hash) the function will
return an array containing all the arguments.

1 files changed, 35 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/any2array.rb b/lib/puppet/parser/functions/any2array.rb
new file mode 100644
index 0000000..d150743
--- /dev/null
+++ b/lib/puppet/parser/functions/any2array.rb
@@ -0,0 +1,35 @@
+#
+# str2bool.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:any2array, :type => :rvalue, :doc => <<-EOS
+This converts any object to an array containing that object. Empty argument
+lists are converted to an empty array. Arrays are left untouched. Hashes are
+converted to arrays of alternating keys and values.
+    EOS
+  ) do |arguments|
+
+    if arguments.empty?
+        return []
+    end
+
+    if arguments.length == 1
+        if arguments[0].kind_of?(Array)
+            return arguments[0]
+        elsif arguments[0].kind_of?(Hash)
+            result = []
+            arguments[0].each do |key, value|
+                result << key << value
+            end
+            return result
+        else
+            return [arguments[0]]
+        end
+    end
+
+    return arguments
+  end
+end
+
+# vim: set ts=2 sw=2 et :