94 lines
3.1 KiB
OCaml
94 lines
3.1 KiB
OCaml
(***********************************************************************)
|
|
(* *)
|
|
(* OCaml *)
|
|
(* *)
|
|
(* Fabrice Le Fessant, INRIA Saclay *)
|
|
(* *)
|
|
(* Copyright 2012 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. *)
|
|
(* *)
|
|
(***********************************************************************)
|
|
|
|
type pers_flags = Rectypes
|
|
|
|
type error =
|
|
Not_an_interface of string
|
|
| Wrong_version_interface of string * string
|
|
| Corrupted_interface of string
|
|
|
|
exception Error of error
|
|
|
|
type cmi_infos = {
|
|
cmi_name : string;
|
|
cmi_sign : Types.signature_item list;
|
|
cmi_crcs : (string * Digest.t) list;
|
|
cmi_flags : pers_flags list;
|
|
}
|
|
|
|
let input_cmi ic =
|
|
let (name, sign) = input_value ic in
|
|
let crcs = input_value ic in
|
|
let flags = input_value ic in
|
|
{
|
|
cmi_name = name;
|
|
cmi_sign = sign;
|
|
cmi_crcs = crcs;
|
|
cmi_flags = flags;
|
|
}
|
|
|
|
let read_cmi filename =
|
|
let ic = open_in_bin filename in
|
|
try
|
|
let buffer = Misc.input_bytes ic (String.length Config.cmi_magic_number) in
|
|
if buffer <> Config.cmi_magic_number then begin
|
|
close_in ic;
|
|
let pre_len = String.length Config.cmi_magic_number - 3 in
|
|
if String.sub buffer 0 pre_len
|
|
= String.sub Config.cmi_magic_number 0 pre_len then
|
|
begin
|
|
let msg =
|
|
if buffer < Config.cmi_magic_number then "an older" else "a newer" in
|
|
raise (Error (Wrong_version_interface (filename, msg)))
|
|
end else begin
|
|
raise(Error(Not_an_interface filename))
|
|
end
|
|
end;
|
|
let cmi = input_cmi ic in
|
|
close_in ic;
|
|
cmi
|
|
with End_of_file | Failure _ ->
|
|
close_in ic;
|
|
raise(Error(Corrupted_interface(filename)))
|
|
| Error e ->
|
|
close_in ic;
|
|
raise (Error e)
|
|
|
|
let output_cmi filename oc cmi =
|
|
(* beware: the provided signature must have been substituted for saving *)
|
|
output_string oc Config.cmi_magic_number;
|
|
output_value oc (cmi.cmi_name, cmi.cmi_sign);
|
|
flush oc;
|
|
let crc = Digest.file filename in
|
|
let crcs = (cmi.cmi_name, crc) :: cmi.cmi_crcs in
|
|
output_value oc crcs;
|
|
output_value oc cmi.cmi_flags;
|
|
crc
|
|
|
|
(* Error report *)
|
|
|
|
open Format
|
|
|
|
let report_error ppf = function
|
|
| Not_an_interface filename ->
|
|
fprintf ppf "%a@ is not a compiled interface"
|
|
Location.print_filename filename
|
|
| Wrong_version_interface (filename, older_newer) ->
|
|
fprintf ppf
|
|
"%a@ is not a compiled interface for this version of OCaml.@.\
|
|
It seems to be for %s version of OCaml."
|
|
Location.print_filename filename older_newer
|
|
| Corrupted_interface filename ->
|
|
fprintf ppf "Corrupted compiled interface@ %a"
|
|
Location.print_filename filename
|