Update stdlib

[mirror/dsa-puppet.git] / 3rdparty / modules / stdlib / lib / puppet / parser / functions / loadjson.rb

diff --git a/3rdparty/modules/stdlib/lib/puppet/parser/functions/loadjson.rb b/3rdparty/modules/stdlib/lib/puppet/parser/functions/loadjson.rb
new file mode 100644 (file)
index 0000000..3a3372b
--- /dev/null
+++ b/3rdparty/modules/stdlib/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