Merge branch 'ticket/master/8010_getvar_function'

* ticket/master/8010_getvar_function:
  (#8010) Add getvar() rvalue function

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/getvar.rb b/lib/puppet/parser/functions/getvar.rb
new file mode 100644
index 0000000..ffd774d
--- /dev/null
+++ b/lib/puppet/parser/functions/getvar.rb
@@ -0,0 +1,23 @@
+module Puppet::Parser::Functions
+
+  newfunction(:getvar, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
+    Lookup a variable in a remote namespace.
+
+    For example:
+
+      $foo = getvar('site::data::foo')
+
+    This is useful if the namespace itself is stored in a string:
+
+      $bar = getvar("${datalocation}::bar")
+    ENDHEREDOC
+
+    unless args.length == 1
+      raise Puppet::ParseError, ("getvar(): wrong number of arguments (#{args.length}; must be 1)")
+    end
+
+    self.lookupvar("#{args[0]}")
+
+  end
+
+end