On 06/08/2010 09:52 PM, Hugo Ferreira wrote: > Hello, > > Markus Mottl wrote: >> On Tue, Jun 8, 2010 at 11:44, Hugo Ferreira <h...@inescporto.pt> wrote: >>> I am trying to us the Sexplib library to process data. >>> However I am having some trouble with strings. >>> Specifically I need to save and restore strings to a file >>> so that the escaping done during saving is "undone" >>> when data is read back in. >>> >>> How can I do this? Appreciate any pointers. >> >> The I/O and parsing routines in the S-expression library should take >> care of escaped strings just fine. > > My apologies but I did not explain myself correctly. The problem here is > that I am trying to automate the conversion to string of the data > structure read from the s-expressions. I have the following: > > let string_of_experiment_data data = > let data = sexp_of_experiment_data data in > Sexplib.Sexp.to_string_hum data > > The problem here is that the "to_string_hum" escapes certain characters, > but I need to have the strings "not escaped". So my question is: is > their any way I can tell sexplib to output a string but not escape > it? Otherwise I will have to hand encode this stuff 8-( > >> Btw., the escaping conventions are >> absolutely identical to the ones used by OCaml. >> > > I am aware of this as it is indicated in your documentation and > the ocaml tutorial site. I also searched for a means to "unescape" > the result from "to_string_hum", which would also work. However > I cannot find a String.unescape. This issue has already been pointed > out. A possible solution would be to use the old. > > Token.eval_string > > and I cannot seem to use the equivalent of the new camlp4. The > equivalent: > > open Camlp4.PreCast > open Syntax > let eval_string s = Camlp4.Struct.Token.Eval.string ~strict:() s > > does not compile (Error: Unbound module Camlp4.PreCast).
It compiles for me if I add -I +camlp4: ocamlc -I +camlp4 -c x.ml or: ocamlfind ocamlc -package camlp4.lib -c x.ml It also links if you add -linkpkg. Best regards, --Edwin _______________________________________________ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
