builder-web/opamdiff/opamdiff.ml

51 lines
1.6 KiB
OCaml

module Set = OpamPackage.Set
type package = OpamPackage.t
let packages (switch : OpamFile.SwitchExport.t) =
assert (Set.cardinal switch.selections.sel_pinned = 0);
assert (Set.cardinal switch.selections.sel_compiler = 0);
assert (Set.subset switch.selections.sel_roots switch.selections.sel_installed);
switch.selections.sel_installed
type version_diff = {
name : OpamPackage.Name.t;
version_left : OpamPackage.Version.t;
version_right : OpamPackage.Version.t;
}
let pp_opampackage ppf p =
Format.fprintf ppf "%s" (OpamPackage.to_string p)
let pp_version_diff ppf { name; version_left; version_right } =
Format.fprintf ppf "%s.%s->%s"
(OpamPackage.Name.to_string name)
(OpamPackage.Version.to_string version_left)
(OpamPackage.Version.to_string version_right)
let compare left right =
let module Set = OpamPackage.Set in
let equal_name p1 p2 = OpamPackage.Name.equal p1.OpamPackage.name p2.OpamPackage.name in
let diff l r =
Set.filter (fun p1 ->
not (Set.exists (equal_name p1) r))
l
in
let same = Set.inter left right
and version_diff =
List.filter_map (fun p1 ->
match Set.find_opt (equal_name p1) right with
| Some p2 ->
if OpamPackage.Version.equal p1.version p2.version
then None
else
Some { name = p1.OpamPackage.name;
version_left = p1.OpamPackage.version;
version_right = p2.OpamPackage.version }
| None ->
None)
(Set.elements left)
and left = diff left right
and right = diff right left
in
(same, version_diff, left, right)