[pclasses-devel] P::s11n deser over http URLs works :)

[stephan b. <st...@s1...>]

Yo:

With only about an hour's work i've put together a proof of concept for 
deserializing from http URLs using pclasses' HttpClient. i can't yet 
serialize over them, but that shouldn't be especially hard to achieve 
via a PHP proxy.

Attached:

ps11n.hpp: the entire implementation. Essentially just a wrapper around 
s11nlite, plus the Serializer implementation.

test.cpp: demo

TODOs:

a) Add serialize() support. It's partially implemented, but isn't useful 
over http yet. It will work by POSTing content written by one of the 
XML Serializers. What the remote side does with it is undefined, though 
- depends on the proxy script running on the http server. The obvious 
choice is simply to dump the node into a db in one big text field.

b) Genericize the Serializer dispatcher to recognize URLs. i'll see if i 
can work with in to s11n::io without breaking anything not requiring an 
explicit dep on pclasses. (Shouldn't be a big problem.)

c) Implement the same for P::FtpClient.

d) A couple other internal tweaks.


It's is now a one-liner to deser an object over http:

   P::s11n::node_type * node =
      P::s11n::load_node( filename_or_http_url );

Reminder: we're still right at home in C++. :) :) :)

The input *format* is irrelevant: any supported by s11nlite will work.

Assuming node != 0, we can deserialize it to it's "complete" type with:

   MyType * obj = P::s11n::deserialize<MyType>( *node );

Or:

   MyType obj;
   bool worked = P::s11n::deserialize<MyType>( *node, obj );

   delete node;

@pclasses: i've got a couple patches to commit to IODevice and 
IORequest_get. May i have CVS access? (SF=sgbeal) More patches are 
certainly in the plan...

Demo output:

stephan@owl:~/cvs/s11n.net/ps11n/src> m && ./test http://s11n/P.s11n
test.cpp:19 : test_ps11n()
test.cpp:35 : node ? = 0x806e0d8
(s11n::parens)
somenode=(NoClass (a \(\)\\b) (foo bar) (long this is a long property)
        fred=(FredClass (key value))
        wilma=(WilmaClass (the lovely wife))
        betty=(BettyClass (value the apple of Barney's eye))
        deep=(Foo
                deeper=(Foo (how_deep really deep!)
                        and_deeper=(Ouch)
                )
        )
)



-- 
----- st...@s1...   http://s11n.net
"...pleasure is a grace and is not obedient to the commands
of the will." -- Alan W. Watts