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|
(**************************************************************************)
(* Copyright © 2009-2024 Stéphane Glondu <steph@glondu.net> *)
(* © 2010-2013 Mehdi Dogguy <mehdi@dogguy.org> *)
(* *)
(* This program is free software: you can redistribute it and/or modify *)
(* it under the terms of the GNU Affero General Public License as *)
(* published by the Free Software Foundation, either version 3 of the *)
(* License, or (at your option) any later version, with the additional *)
(* exemption that compiling, linking, and/or using OpenSSL is allowed. *)
(* *)
(* 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 *)
(* Affero General Public License for more details. *)
(* *)
(* You should have received a copy of the GNU Affero General Public *)
(* License along with this program. If not, see *)
(* <http://www.gnu.org/licenses/>. *)
(**************************************************************************)
type t = string
external verrevcmp : string -> string -> int = "caml_verrevcmp"
let decomp =
let rex = Re.Pcre.regexp "^(?:(\\d+):)?(?:([^\\s-]+)|(\\S+)-([^\\s-]+))$" in
fun x ->
try
let r = Re.Pcre.exec ~rex x in
let epoch =
try int_of_string (Re.Pcre.get_substring r 1) with Not_found -> 0
in
let upstream =
try Re.Pcre.get_substring r 2
with Not_found -> Re.Pcre.get_substring r 3
in
let debian = try Re.Pcre.get_substring r 4 with Not_found -> "0" in
(epoch, upstream, debian)
with Not_found ->
Printf.ksprintf invalid_arg "invalid version number: %s" x
let compare x y =
let x1, x2, x3 = decomp x and y1, y2, y3 = decomp y in
let ( >>= ) x f = if x = 0 then f () else x in
let cmp x y () = verrevcmp x y in
x1 - y1 >>= cmp x2 y2 >>= cmp x3 y3
let compare_predicate cmp x y =
let d = compare x y in
match cmp with
| Types.Eq -> d = 0
| Ge -> d >= 0
| Gt -> d > 0
| Le -> d <= 0
| Lt -> d < 0
|
