Adding base64 function

Adding base64 function and spec test.  Included a bonus fix to
validate_slength_spec.rb to put the expectation message in the right
place.

1 files changed, 37 insertions, 0 deletions

diff --git a/lib/puppet/parser/functions/base64.rb b/lib/puppet/parser/functions/base64.rb
new file mode 100644
index 0000000..d9a590a
--- /dev/null
+++ b/lib/puppet/parser/functions/base64.rb
@@ -0,0 +1,37 @@
+module Puppet::Parser::Functions
+ 
+  newfunction(:base64, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
+
+    Base64 encode or decode a string based on the command and the string submitted
+
+    Usage:
+
+      $encodestring = base64('encode','thestring')
+      $decodestring = base64('decode','dGhlc3RyaW5n')
+
+    ENDHEREDOC
+ 
+    require 'base64'
+ 
+    raise Puppet::ParseError, ("base64(): Wrong number of arguments (#{args.length}; must be = 2)") unless args.length == 2
+
+    actions = ['encode','decode']
+
+    unless actions.include?(args[0])
+      raise Puppet::ParseError, ("base64(): the first argument must be one of 'encode' or 'decode'")
+    end
+ 
+    unless args[1].is_a?(String)
+      raise Puppet::ParseError, ("base64(): the second argument must be a string to base64")
+    end
+ 
+    case args[0]
+      when 'encode'
+        result = Base64.encode64(args[1])
+      when 'decode'
+        result = Base64.decode64(args[1])
+    end
+ 
+    return result
+  end
+end