Rinci

Changes for version 1.1.59 - 2014-10-22

Introduce 'encoding' property in result metadata and argument specification. Currently the only known encoding is 'base64'. This is for functions that want to accept/return binary data, when transport protocol (e.g. 'json' format in Riap) does not support binary data (one can also use binary-safe formats in Riap e.g. Storable or Sereal, but this is not widely supported across languages like JSON). Tools can be written to support automatic decoding of function arguments and automatic encoding of function result. In Perl, see CPAN module Perinci::Sub::Wrapper.
Introduce 'arg_errors' and 'arg_warnings' properties in result metadata. This is for functions that do form processing, because often we want to send the error message for all non-validating arguments (form fields) instead of just the first one found. In Perl, see CPAN module Borang.
Introduce '-action' special argument and the 'check_arg' feature. The '-action' can toggle special invocation modes to the function. This is like '-tx_action' except is not necessarily related to transactions. Currently the only known action is 'check_arg', to check a single argument. This is for functions that do form processing, e.g. when user is editing a form field on the browser and we do AJAX calls to do validation as user types.