First version. Simple count function to use within Puppet DSL.

Signed-off-by: Krzysztof Wilczynski <krzysztof.wilczynski@linux.com>

diff --git a/count.rb b/count.rb
new file mode 100644 (file)
index 0000000..c4a5977
--- /dev/null
+++ b/count.rb
@@ -0,0 +1,30 @@
+#
+# count.rb
+#
+
+# TODO(Krzysztof Wilczynski): We need to add support for regular expression ...
+
+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
+
+    array = arguments[0]
+
+    if not array.is_a?(Array)
+      raise(Puppet::ParseError, 'count(): Requires an array to work with')
+    end
+
+    item = arguments[1] if arguments[1]
+
+    result = item ? array.count(item) : array.count
+
+    return result
+  end
+end
+
+# vim: set ts=2 sw=2 et :