1 files changed, 36 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/count.rb b/lib/puppet/parser/functions/count.rb
new file mode 100644
index 0000000..c4e2283
--- /dev/null
+++ b/lib/puppet/parser/functions/count.rb
@@ -0,0 +1,36 @@
+#
+# count.rb
+#
+
+# TODO(Krzysztof Wilczynski): We need to add support for regular expression ...
+# TODO(Krzysztof Wilczynski): Support for hash values would be nice too ...
+
+module Puppet::Parser::Functions
+  newfunction(:count, :type => :rvalue, :doc => <<-EOS
+    EOS
+  ) do |arguments|
+
+    # Technically we support two arguments but only first is mandatory ...
+    raise(Puppet::ParseError, "count(): Wrong number of arguments " +
+      "given (#{arguments.size} for 1)") if arguments.size < 1
+
+    value = arguments[0]
+    klass = value.class
+
+    unless [Array, Hash, String].include?(klass)
+      raise(Puppet::ParseError, 'count(): Requires either ' +
+        'array, hash or string to work with')
+    end
+
+    item = arguments[1] if arguments[1]
+
+    value = value.is_a?(Hash) ? value.keys : value
+
+    # No item to look for and count?  Then just return current size ...
+    result = item ? value.count(item) : value.size
+
+    return result
+  end
+end
+
+# vim: set ts=2 sw=2 et :