Added new API functions prototypes;

include/sexpr/sexp.h

@@ -741,7 +741,13 @@ extern "C" {
    * problematic error.
    */
   sexp_t *read_one_sexp(sexp_iowrap_t *iow);
-  
+
+  sexp_cstrwrap_t *init_cstrwrap(const char *);
+
+  void destroy_cstrwrap(sexp_cstrwrap_t *);
+
+  sexp_t *get_one_sexp(sexp_cstrwrap_t *);
+
   /** 
    * \ingroup parser
    * wrapper around parser for compatibility.