Convert to module format.

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/fact.rb b/lib/puppet/parser/functions/fact.rb
new file mode 100644
index 0000000..27b7bb2
--- /dev/null
+++ b/lib/puppet/parser/functions/fact.rb
@@ -0,0 +1,36 @@
+#
+# fact.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:fact, :type => :rvalue, :doc => <<-EOS
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "fact(): Wrong number of arguments " +
+      "given (#{arguments.size} for 1)") if arguments.size < 1
+
+    fact = arguments[0]
+
+    unless fact.is_a?(String)
+      raise(Puppet::ParseError, 'fact(): Requires fact name to be a string')
+    end
+
+    raise(Puppet::ParseError, 'fact(): You must provide ' +
+      'fact name') if fact.empty?
+
+    result = lookupvar(fact) # Get the value of interest from Facter ...
+
+    #
+    # Now this is a funny one ...  Puppet does not have a concept of
+    # returning neither undef nor nil back for use within the Puppet DSL
+    # and empty string is as closest to actual undef as you we can get
+    # at this point in time ...
+    #
+    result = result.empty? ? '' : result
+
+    return result
+  end
+end
+
+# vim: set ts=2 sw=2 et :