1 files changed, 26 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/is_string.rb b/lib/puppet/parser/functions/is_string.rb
new file mode 100644
index 0000000..f5bef04
--- /dev/null
+++ b/lib/puppet/parser/functions/is_string.rb
@@ -0,0 +1,26 @@
+#
+# is_string.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:is_string, :type => :rvalue, :doc => <<-EOS
+Returns true if the variable passed to this function is a string.
+    EOS
+  ) do |arguments|
+
+    raise(Puppet::ParseError, "is_string(): Wrong number of arguments " +
+      "given (#{arguments.size} for 1)") if arguments.size < 1
+
+    type = arguments[0]
+
+    result = type.is_a?(String)
+
+    if result and (type == type.to_f.to_s or type == type.to_i.to_s) then
+      return false
+    end
+
+    return result
+  end
+end
+
+# vim: set ts=2 sw=2 et :