robur/git-kv
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last_modified: don't find_blob; find the commit! #10

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reynir merged 2 commits from fix-last_modified into main 2024-12-20 12:11:32 +00:00
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1 changed files with 29 additions and 27 deletions
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src/git_kv.ml
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@ -463,33 +463,35 @@ module Make (Pclock : Mirage_clock.PCLOCK) = struct
let last_modified t key =
let open Lwt.Infix in
find_blob t key >>=
Option.fold
~none:(Lwt.return (Error (`Not_found key)))
~some:(fun head ->
Store.read_exn t.store head >|= function
| Commit c ->
let author = Git_commit.author c in
let secs, tz_offset = author.Git.User.date in
let secs =
Option.fold ~none:secs
~some:(fun { Git.User.sign ; hours ; minutes } ->
let tz_off = Int64.(mul (add (mul (of_int hours) 60L) (of_int minutes)) 60L) in
match sign with
| `Plus -> Int64.(sub secs tz_off)
| `Minus -> Int64.(add secs tz_off))
tz_offset
in
let ts =
Option.fold
~none:Ptime.epoch
~some:Fun.id (Ptime.of_float_s (Int64.to_float secs))
in
Ok ts
| _ ->
Ok (Option.fold
~none:Ptime.epoch
~some:Fun.id (Ptime.of_float_s (Int64.to_float (now ())))))
match t.committed, t.head with
| None, None ->
Lwt.return (Error (`Not_found key))
| Some _, _ ->
Lwt.return_ok
(Option.fold
~none:Ptime.epoch
~some:Fun.id (Ptime.of_float_s (Int64.to_float (now ()))))
| None, Some head ->
Store.read_exn t.store head >|= function
| Commit c ->
let author = Git_commit.author c in
let secs, tz_offset = author.Git.User.date in
let secs =
Option.fold ~none:secs
~some:(fun { Git.User.sign ; hours ; minutes } ->
let tz_off = Int64.(mul (add (mul (of_int hours) 60L) (of_int minutes)) 60L) in
match sign with
| `Plus -> Int64.(sub secs tz_off)
| `Minus -> Int64.(add secs tz_off))
tz_offset
in
let ts =
Option.fold
~none:Ptime.epoch
~some:Fun.id (Ptime.of_float_s (Int64.to_float secs))
in
Ok ts
| _ -> assert false
let digest t key =
let open Lwt.Infix in