(* wrappi
 * Copyright (C) 2011 Red Hat Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *)

open Wrappi_types
open Wrappi_utils
open Wrappi_pr
open Wrappi_boilerplate

open Printf

let c_of_any_type = function
  | TFilePerm -> "int"
  | TInt32 -> "int32_t"
  | TInt64 -> "int64_t"
  | TPathname -> "const char *"
  | TUInt32 -> "uint32_t"
  | TUInt64 -> "uint64_t"

let c_of_return_type = function
  | RErr -> "int"
  | Return t -> c_of_any_type t

let generate_lib_wrappi_h api =
  generate_header CStyle LGPLv2plus;

  pr "\
/* Please read the wrappi(1) man page for full documentation.  If you
 * are not familiar with man pages or don't have the documentation
 * installed, it is also available online at http://wrappi.org/
 */

#ifndef WRAPPI_H_
#define WRAPPI_H_

#ifdef __cplusplus
extern \"C\" {
#endif

#include <stdint.h>

/* The handle. */
typedef struct wrap_h wrap_h;

/* Connection management. */
extern wrap_h *wrap_create (void);
extern void wrap_close (wrap_h *w);

/* API entry points. */
";

  List.iter (
    fun ep ->
      pr "extern %s wrap_%s (wrap_h *w, %s);\n"
        (c_of_return_type ep.ep_return)
        ep.ep_name
        (String.concat ", "
           (List.map (
             fun (name, t) ->
               let t = c_of_any_type t in
               let last_char = t.[String.length t - 1] in
               let sep = if isalnum last_char then " " else "" in
               sprintf "%s%s%s" t sep name
            ) ep.ep_params))
  ) api.api_entry_points;

  pr "\

#ifdef __cplusplus
}
#endif

#endif /* WRAPPI_H_ */
"

let generate api =
  output_to "lib/wrappi.h" generate_lib_wrappi_h api