Source file name_status.ml
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open! Import
module Diff_status = struct
module T = struct
[@@@coverage off]
type t =
[ `A
| `D
| `M
| `R
| `T
| `C
| `U
| `Q
| `I
| `Question_mark
| `Bang
| `X
| `Not_supported
]
[@@deriving_inline sexp_of]
let sexp_of_t =
(function
| `A -> Sexplib0.Sexp.Atom "A"
| `D -> Sexplib0.Sexp.Atom "D"
| `M -> Sexplib0.Sexp.Atom "M"
| `R -> Sexplib0.Sexp.Atom "R"
| `T -> Sexplib0.Sexp.Atom "T"
| `C -> Sexplib0.Sexp.Atom "C"
| `U -> Sexplib0.Sexp.Atom "U"
| `Q -> Sexplib0.Sexp.Atom "Q"
| `I -> Sexplib0.Sexp.Atom "I"
| `Question_mark -> Sexplib0.Sexp.Atom "Question_mark"
| `Bang -> Sexplib0.Sexp.Atom "Bang"
| `X -> Sexplib0.Sexp.Atom "X"
| `Not_supported -> Sexplib0.Sexp.Atom "Not_supported"
: t -> Sexplib0.Sexp.t)
;;
[@@@deriving.end]
end
include T
let parse_exn str : t =
if String.is_empty str
then raise (Err.E (Err.create [ Pp.text "Unexpected empty diff status." ]));
match str.[0] with
| 'A' -> `A
| 'D' -> `D
| 'M' -> `M
| 'U' -> `U
| 'Q' -> `Q
| 'I' -> `I
| '?' -> `Question_mark
| '!' -> `Bang
| 'X' -> `X
| 'R' -> `R
| 'T' -> `T
| 'C' -> `C
| _ -> `Not_supported
;;
end
let parse_line_exn ~line : Vcs.Name_status.Change.t =
match
Vcs.Private.try_with (fun () ->
match String.split line ~on:'\t' with
| [] -> assert false
| [ _ ] ->
raise (Err.E (Err.create [ Pp.text "Unexpected output from git status." ]))
| status :: path :: rest ->
(match Diff_status.parse_exn status with
| `A -> Vcs.Name_status.Change.Added (Vcs.Path_in_repo.v path)
| `D -> Removed (Vcs.Path_in_repo.v path)
| `M | `T -> Modified (Vcs.Path_in_repo.v path)
| (`R | `C) as diff_status ->
let similarity =
String.sub status ~pos:1 ~len:(String.length status - 1) |> Int.of_string
in
let path2 =
match List.hd rest with
| Some hd -> Vcs.Path_in_repo.v hd
| None ->
raise (Err.E (Err.create [ Pp.text "Unexpected output from git status." ]))
in
(match diff_status with
| `R -> Renamed { src = Vcs.Path_in_repo.v path; dst = path2; similarity }
| `C -> Copied { src = Vcs.Path_in_repo.v path; dst = path2; similarity })
| other ->
raise
(Err.E
(Err.create
[ Pp.text "Unexpected status:"
; Err.sexp
(Sexp.List
[ sexp_field (module String) "status" status
; sexp_field (module Diff_status) "other" other
])
]))))
with
| Ok t -> t
| Error err ->
raise
(Err.E
(Err.add_context
err
[ Err.sexp
(Sexp.List
[ Sexp.Atom "Volgo_git_backend.Name_status.parse_line_exn"
; sexp_field (module String) "line" line
])
]))
;;
let parse_lines_exn ~lines = List.map lines ~f:(fun line -> parse_line_exn ~line)
module Make (Runtime : Runtime.S) = struct
type t = Runtime.t
let name_status t ~repo_root ~(changed : Vcs.Name_status.Changed.t) =
let changed_param =
match changed with
| Between { src; dst } ->
Printf.sprintf "%s..%s" (src |> Vcs.Rev.to_string) (dst |> Vcs.Rev.to_string)
in
Runtime.git
t
~cwd:(repo_root |> Vcs.Repo_root.to_absolute_path)
~args:[ "diff"; "--name-status"; changed_param ]
~f:(fun output ->
let open Result.Monad_syntax in
let* stdout = Vcs.Git.Result.exit0_and_stdout output in
Vcs.Private.try_with (fun () ->
parse_lines_exn ~lines:(String.split_lines stdout)))
;;
end