add puppet stdlib

[dsa-puppet.git] / modules / stdlib / lib / puppet / parser / functions / is_domain_name.rb

diff --git a/modules/stdlib/lib/puppet/parser/functions/is_domain_name.rb b/modules/stdlib/lib/puppet/parser/functions/is_domain_name.rb
new file mode 100644 (file)
index 0000000..4e92939
--- /dev/null
+++ b/modules/stdlib/lib/puppet/parser/functions/is_domain_name.rb
@@ -0,0 +1,27 @@
+#
+# is_domain_name.rb
+#
+
+module Puppet::Parser::Functions
+  newfunction(:is_domain_name, :type => :rvalue, :doc => <<-EOS
+Returns true if the string passed to this function is a valid IP address. Support for IPv4 and IPv6 address types is included.
+    EOS
+  ) do |arguments|
+
+    if (arguments.size != 1) then
+      raise(Puppet::ParseError, "is_domain_name(): Wrong number of arguments "+
+        "given #{arguments.size} for 1")
+    end
+
+    domain = arguments[0]
+
+    if domain =~ /^(([a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])\.?$/ then
+      return true
+    else
+      return false
+    end
+
+  end
+end
+
+# vim: set ts=2 sw=2 et :