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Diffstat (limited to 'lib/puppet/parser/functions/loadjson.rb')
-rw-r--r-- | lib/puppet/parser/functions/loadjson.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/loadjson.rb b/lib/puppet/parser/functions/loadjson.rb new file mode 100644 index 0000000..3a3372b --- /dev/null +++ b/lib/puppet/parser/functions/loadjson.rb @@ -0,0 +1,34 @@ +module Puppet::Parser::Functions + newfunction(:loadjson, :type => :rvalue, :arity => -2, :doc => <<-'ENDHEREDOC') do |args| +Load a JSON file containing an array, string, or hash, and return the data +in the corresponding native data type. +The second parameter is the default value. It will be returned if the file +was not found or could not be parsed. + +For example: + + $myhash = loadjson('/etc/puppet/data/myhash.json') + $myhash = loadjson('no-file.json', {'default' => 'value'}) + ENDHEREDOC + + raise ArgumentError, 'Wrong number of arguments. 1 or 2 arguments should be provided.' unless args.length >= 1 + + if File.exists?(args[0]) + begin + content = File.read(args[0]) + PSON::load(content) || args[1] + rescue Exception => e + if args[1] + args[1] + else + raise e + end + end + else + warning("Can't load '#{args[0]}' File does not exist!") + args[1] + end + + end + +end |