openwsman-yast now returns proper datatypes

After five days of hacking last week, a final itch was left which needed scratching. The YaST openwsman plugin only passed strings back and forth, losing all the type information present in the YCP result value. So I added some code to convert basic YCP types to XML (in the plugin) and from XML to Ruby (on the client side). Now the result of a web service call to YaST can be processed directly in Ruby. Here's a code example showing the contents of /proc/modules on a remote machine.

require 'rwsman'
require 'yast'
client = WsMan::Client.new( 'http', 'client.internet.org', 8889, '/wsman', 'user', 'password')
options = WsMan::ClientOption.new
schema = YaST::SCHEMA
uri = schema + "/YCP"
options.property_add( "ycp", "{ return SCR::Read( .proc.modules ); }" )
result = client.invoke( uri, "eval", options )
modhash = YaST.decode_result( result ) # hash of { modulename => { size=>1234, used=>3 } }

Supported are void, bool, integer, float, string, symbol, path, term, list, and map -- should be sufficient for most of YaST. The YaST class is here. You need at least version 1.1.0 of openwsman and openwsman-yast, both available on the openSUSE build service. And, btw, source code for openwsman-yast is now hosted on svn.opensuse.org