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-rw-r--r--lib/puppet/parser/functions/ip_to_erl_format.rb31
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/ip_to_erl_format.rb b/lib/puppet/parser/functions/ip_to_erl_format.rb
new file mode 100644
index 0000000..4c066b9
--- /dev/null
+++ b/lib/puppet/parser/functions/ip_to_erl_format.rb
@@ -0,0 +1,31 @@
+require 'ipaddr'
+
+# Custom function to convert an IP4/6 address from a string to the
+# erlang inet kernel format.
+# For example from "172.17.0.16" to {172,17,0,16}
+# See http://erlang.org/doc/man/kernel_app.html and http://erlang.org/doc/man/inet.html
+# for more information.
+module Puppet::Parser::Functions
+ newfunction(:ip_to_erl_format, :type => :rvalue, :doc => "Convert an IP address to the erlang inet format.") do |arg|
+ if arg[0].class != String
+ raise Puppet::ParseError, "Syntax error: #{arg[0]} must be a String"
+ end
+ ip = IPAddr.new arg[0]
+ output = '{'
+ if ip.ipv6?
+ split_char = ':'
+ base = 16
+ else
+ split_char = '.'
+ base = 10
+ end
+ # to_string() prints the canonicalized form
+ ip.to_string().split(split_char).each {
+ |x| output += x.to_i(base).to_s + ','
+ }
+ # Remove the last spurious comma
+ output = output.chomp(',')
+ output += '}'
+ return output
+ end
+end