How to pass a list from C to Common Lisp - comp.lang.lisp

Melding fra diskusjonen How to pass a list from C to Common Lisp

gugamilare

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Flere alternativer 3 Jun 2009, 19:36

Nyhetsgrupper: comp.lang.lisp

Fra: gugamilare <gugamil...@gmail.com>

Dato: Wed, 3 Jun 2009 10:36:53 -0700 (PDT)

Lokal: Ons 3 Jun 2009 19:36

Emne: Re: How to pass a list from C to Common Lisp

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On 3 jun, 13:58, "N. Raghavendra" <ra...@mri.ernet.in> wrote:

> After reading Pierre Mais's postings

> http://www.pmsf.de/resources/lisp/expat.html

> I have written a basic C wrapper for libmxl2, which parses an XML
> document, and prints a list containing the parsed data. At the moment,
> I save the printed sexp to a file, and READ it from Lisp. I am thinking
> it may be better to avoid the intermediate printing and READing, and
> instead save the parsed data to a C struct; I can then try to use Lisp
> to get the sexp from the C struct, using an FFI. What is a good way to
> store a sexp in C? Is it common practice to pass through an
> intermediate file like I am doing now?

If you want just to transform XML into SEXPS, take a look at sxml and
other XML libs available out there.

You may also consider printing the sexp into a string and read it from
Lisp. Printing to a file is not a very good idea since access to HD is
very much slower than access to RAM.

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