add puppet stdlib

[dsa-puppet.git] / modules / stdlib / lib / puppet / parser / functions / delete.rb

diff --git a/modules/stdlib/lib/puppet/parser/functions/delete.rb b/modules/stdlib/lib/puppet/parser/functions/delete.rb
new file mode 100644 (file)
index 0000000..ab8f75b
--- /dev/null
+++ b/modules/stdlib/lib/puppet/parser/functions/delete.rb
@@ -0,0 +1,34 @@
+#
+# delete.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(:delete, :type => :rvalue, :doc => <<-EOS
+Deletes a selected element from an array.
+
+*Examples:*
+
+    delete(['a','b','c'], 'b')
+
+Would return: ['a','c']
+    EOS
+  ) do |arguments|
+
+    if (arguments.size != 2) then
+      raise(Puppet::ParseError, "delete(): Wrong number of arguments "+
+        "given #{arguments.size} for 2")
+    end
+
+    a = arguments[0]
+    item = arguments[1]
+
+    a.delete(item)
+    a
+
+  end
+end
+
+# vim: set ts=2 sw=2 et :