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(***********************************************************************)
(*                             ocamlbuild                              *)
(*                                                                     *)
(*  Nicolas Pouillard, Berke Durak, projet Gallium, INRIA Rocquencourt *)
(*                                                                     *)
(*  Copyright 2007 Institut National de Recherche en Informatique et   *)
(*  en Automatique.  All rights reserved.  This file is distributed    *)
(*  under the terms of the Q Public License version 1.0.               *)
(*                                                                     *)
(***********************************************************************)

(* $Id$ *)
(* Original author: Nicolas Pouillard *)
open My_std
open Format
open Log
open Pathname.Operators
open Tags.Operators
open Tools
open Command;;


module S = Set.Make(String)

let stdlib_dir = lazy begin
  (* FIXME *)
  let ocamlc_where = sprintf "%s/ocamlc.where" (Pathname.pwd / !Options.build_dir) in
  let () = Command.execute ~quiet:true (Cmd(S[!Options.ocamlc; A"-where"; Sh">"; P ocamlc_where])) in
  String.chomp (read_file ocamlc_where)
end

let module_name_of_filename f = String.capitalize (Pathname.remove_extensions f)
let module_name_of_pathname x =
  module_name_of_filename (Pathname.to_string (Pathname.basename x))

let ignore_stdlib x =
  if !Options.nostdlib then false
  else
    let x' = !*stdlib_dir/((String.uncapitalize x)-.-"cmi") in
    Pathname.exists x'

let non_dependencies = ref []
let non_dependency m1 m2 = non_dependencies := (m1, m2) :: !non_dependencies

let ignore_this_module modpath x =
  List.mem (modpath, x) !non_dependencies
  || (List.mem x !Options.ignore_list) || ignore_stdlib x

let keep_this_module modpath x =
  if ignore_this_module modpath x then
    let () = dprintf 3 "This module (%s) is ignored by %s" x modpath in false
  else true

let expand_module include_dirs module_name exts =
  List.fold_right begin fun include_dir ->
    List.fold_right begin fun ext acc ->
      let module_name_ext = module_name-.-ext in
      include_dir/(String.uncapitalize module_name_ext) ::
      include_dir/(String.capitalize module_name_ext) :: acc
    end exts
  end include_dirs []

let string_list_of_file file =
  with_input_file file begin fun ic ->
    Lexers.blank_sep_strings (Lexing.from_channel ic)
  end
let print_path_list = Pathname.print_path_list

let ocaml_ppflags tags =
  let flags = Flags.of_tags (tags++"ocaml"++"pp") in
  let reduced = Command.reduce flags in
  if reduced = N then N else S[A"-pp"; Quote reduced]

let ocaml_add_include_flag x acc =
  if x = Pathname.current_dir_name then acc else A"-I" :: A x :: acc

let ocaml_include_flags path =
  S (List.fold_right ocaml_add_include_flag (Pathname.include_dirs_of (Pathname.dirname path)) [])

let info_libraries = Hashtbl.create 103

let libraries = Hashtbl.create 103
let libraries_of m =
  try Hashtbl.find libraries m with Not_found -> []
let use_lib m lib = Hashtbl.replace libraries m (lib :: libraries_of m)

let cmi_of = Pathname.update_extensions "cmi"