1 files changed, 62 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/lib/puppet/parser/functions/member.rb b/puppet/modules/stdlib/lib/puppet/parser/functions/member.rb
new file mode 100644
index 00000000..88609ce5
--- /dev/null
+++ b/puppet/modules/stdlib/lib/puppet/parser/functions/member.rb
@@ -0,0 +1,62 @@
+#
+# member.rb
+#
+
+# TODO(Krzysztof Wilczynski): We need to add support for regular expression ...
+# TODO(Krzysztof Wilczynski): Support for strings and hashes too ...
+
+module Puppet::Parser::Functions
+  newfunction(:member, :type => :rvalue, :doc => <<-EOS
+This function determines if a variable is a member of an array.
+The variable can be a string, fixnum, or array.
+
+*Examples:*
+
+    member(['a','b'], 'b')
+
+Would return: true
+
+    member(['a', 'b', 'c'], ['a', 'b'])
+
+would return: true
+
+    member(['a','b'], 'c')
+
+Would return: false
+
+    member(['a', 'b', 'c'], ['d', 'b'])
+
+would return: false
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "member(): Wrong number of arguments " +
+      "given (#{arguments.size} for 2)") if arguments.size < 2
+
+    array = arguments[0]
+
+    unless array.is_a?(Array)
+      raise(Puppet::ParseError, 'member(): Requires array to work with')
+    end
+
+    unless arguments[1].is_a? String or arguments[1].is_a? Fixnum or arguments[1].is_a? Array
+      raise(Puppet::ParseError, 'member(): Item to search for must be a string, fixnum, or array')
+    end
+
+    if arguments[1].is_a? String or arguments[1].is_a? Fixnum
+      item = Array(arguments[1])
+    else
+      item = arguments[1]
+    end
+
+
+    raise(Puppet::ParseError, 'member(): You must provide item ' +
+      'to search for within array given') if item.respond_to?('empty?') && item.empty?
+
+    result = (item - array).empty?
+
+    return result
+  end
+end
+
+# vim: set ts=2 sw=2 et :