1 files changed, 49 insertions, 0 deletions
diff --git a/puppet/modules/stdlib/lib/puppet/parser/functions/delete.rb b/puppet/modules/stdlib/lib/puppet/parser/functions/delete.rb
new file mode 100644
index 00000000..f548b444
--- /dev/null
+++ b/puppet/modules/stdlib/lib/puppet/parser/functions/delete.rb
@@ -0,0 +1,49 @@
+#
+# delete.rb
+#
+
+# TODO(Krzysztof Wilczynski): We need to add support for regular expression ...
+
+module Puppet::Parser::Functions
+  newfunction(:delete, :type => :rvalue, :doc => <<-EOS
+Deletes all instances of a given element from an array, substring from a
+string, or key from a hash.
+
+*Examples:*
+
+    delete(['a','b','c','b'], 'b')
+    Would return: ['a','c']
+
+    delete({'a'=>1,'b'=>2,'c'=>3}, 'b')
+    Would return: {'a'=>1,'c'=>3}
+
+    delete({'a'=>1,'b'=>2,'c'=>3}, ['b','c'])
+    Would return: {'a'=>1}
+
+    delete('abracadabra', 'bra')
+    Would return: 'acada'
+  EOS
+  ) do |arguments|
+
+    if (arguments.size != 2) then
+      raise(Puppet::ParseError, "delete(): Wrong number of arguments "+
+                                  "given #{arguments.size} for 2.")
+    end
+
+    collection = arguments[0].dup
+    Array(arguments[1]).each do |item|
+      case collection
+        when Array, Hash
+          collection.delete item
+        when String
+          collection.gsub! item, ''
+        else
+          raise(TypeError, "delete(): First argument must be an Array, " +
+                             "String, or Hash. Given an argument of class #{collection.class}.")
+      end
+    end
+    collection
+  end
+end
+
+# vim: set ts=2 sw=2 et :