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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(rebar_hg_resource).
-behaviour(rebar_resource_v2).
-export([init/2,
lock/2,
download/3,
download/4,
needs_update/2,
make_vsn/2]).
-include("rebar.hrl").
-spec init(atom(), rebar_state:t()) -> {ok, rebar_resource_v2:resource()}.
init(Type, _State) ->
Resource = rebar_resource_v2:new(Type, ?MODULE, #{}),
{ok, Resource}.
lock(AppInfo, _) ->
check_type_support(),
lock_(rebar_app_info:dir(AppInfo), rebar_app_info:source(AppInfo)).
lock_(AppDir, {hg, Url, _}) ->
lock_(AppDir, {hg, Url});
lock_(AppDir, {hg, Url}) ->
Ref = get_ref(AppDir),
{hg, Url, {ref, Ref}}.
%% Return `true' if either the hg url or tag/branch/ref is not the same as
%% the currently checked out repo for the dep
needs_update(AppInfo, _) ->
needs_update_(rebar_app_info:dir(AppInfo), rebar_app_info:source(AppInfo)).
needs_update_(Dir, {hg, Url, {tag, Tag}}) ->
Ref = get_ref(Dir),
{ClosestTag, Distance} = get_tag_distance(Dir, Ref),
?DEBUG("Comparing hg tag ~ts with ref ~ts (closest tag is ~ts at distance ~ts)",
[Tag, Ref, ClosestTag, Distance]),
not ((Distance =:= "0") andalso (Tag =:= ClosestTag)
andalso compare_url(Dir, Url));
needs_update_(Dir, {hg, Url, {branch, Branch}}) ->
Ref = get_ref(Dir),
BRef = get_branch_ref(Dir, Branch),
not ((Ref =:= BRef) andalso compare_url(Dir, Url));
needs_update_(Dir, {hg, Url, "default"}) ->
Ref = get_ref(Dir),
BRef = get_branch_ref(Dir, "default"),
not ((Ref =:= BRef) andalso compare_url(Dir, Url));
needs_update_(Dir, {hg, Url, Ref}) ->
LocalRef = get_ref(Dir),
TargetRef = case Ref of
{ref, Ref1} ->
Length = length(LocalRef),
if Length >= 7 -> lists:sublist(Ref1, Length);
Length < 7 -> Ref1
end;
Ref1 ->
Ref1
end,
?DEBUG("Comparing hg ref ~ts with ~ts", [Ref1, LocalRef]),
not ((LocalRef =:= TargetRef) andalso compare_url(Dir, Url)).
download(TmpDir, AppInfo, State, _) ->
check_type_support(),
case download_(TmpDir, rebar_app_info:source(AppInfo), State) of
{ok, _} ->
ok;
{error, Reason} ->
{error, Reason};
Error ->
{error, Error}
end.
download(Dir, AppInfo, State) ->
download_(Dir, AppInfo, State).
download_(Dir, {hg, Url}, State) ->
?WARN("WARNING: It is recommended to use {branch, Name}, {tag, Tag} or {ref, Ref}, otherwise updating the dep may not work as expected.", []),
download_(Dir, {hg, Url, {branch, "default"}}, State);
download_(Dir, {hg, Url, ""}, State) ->
?WARN("WARNING: It is recommended to use {branch, Name}, {tag, Tag} or {ref, Ref}, otherwise updating the dep may not work as expected.", []),
download_(Dir, {hg, Url, {branch, "default"}}, State);
download_(Dir, {hg, Url, {branch, Branch}}, _State) ->
ok = filelib:ensure_dir(Dir),
maybe_warn_local_url(Url),
rebar_utils:sh(?FMT("hg clone -q -b ~ts ~ts ~ts",
[rebar_utils:escape_chars(Branch),
rebar_utils:escape_chars(Url),
rebar_utils:escape_chars(filename:basename(Dir))]),
[{cd, filename:dirname(Dir)}]);
download_(Dir, {hg, Url, {tag, Tag}}, _State) ->
ok = filelib:ensure_dir(Dir),
maybe_warn_local_url(Url),
rebar_utils:sh(?FMT("hg clone -q -u ~ts ~ts ~ts",
[rebar_utils:escape_chars(Tag),
rebar_utils:escape_chars(Url),
rebar_utils:escape_chars(filename:basename(Dir))]),
[{cd, filename:dirname(Dir)}]);
download_(Dir, {hg, Url, {ref, Ref}}, _State) ->
ok = filelib:ensure_dir(Dir),
maybe_warn_local_url(Url),
rebar_utils:sh(?FMT("hg clone -q -r ~ts ~ts ~ts",
[rebar_utils:escape_chars(Ref),
rebar_utils:escape_chars(Url),
rebar_utils:escape_chars(filename:basename(Dir))]),
[{cd, filename:dirname(Dir)}]);
download_(Dir, {hg, Url, Rev}, _State) ->
ok = filelib:ensure_dir(Dir),
maybe_warn_local_url(Url),
rebar_utils:sh(?FMT("hg clone -q -r ~ts ~ts ~ts",
[rebar_utils:escape_chars(Rev),
rebar_utils:escape_chars(Url),
rebar_utils:escape_chars(filename:basename(Dir))]),
[{cd, filename:dirname(Dir)}]).
make_vsn(AppInfo, _) ->
check_type_support(),
make_vsn_(rebar_app_info:dir(AppInfo)).
make_vsn_(Dir) ->
BaseHg = "hg -R \"" ++ rebar_utils:escape_double_quotes(Dir) ++ "\" ",
Ref = get_ref(Dir),
Cmd = BaseHg ++ "log --template \"{latesttag}+build.{latesttagdistance}.rev.{node|short}\""
" --rev " ++ Ref,
AbortMsg = io_lib:format("Version resolution of hg dependency failed in ~ts", [Dir]),
{ok, VsnString} =
rebar_utils:sh(Cmd,
[{use_stdout, false}, {debug_abort_on_error, AbortMsg}]),
RawVsn = rebar_string:trim(VsnString, both, "\n"),
Vsn = case RawVsn of
"null+" ++ Rest -> "0.0.0+" ++ Rest;
_ -> RawVsn
end,
{plain, Vsn}.
%%% Internal functions
compare_url(Dir, Url) ->
CurrentUrl = rebar_string:trim(os:cmd("hg -R \"" ++ rebar_utils:escape_double_quotes(Dir) ++"\" paths default"), both, "\n"),
CurrentUrl1 = rebar_string:trim(CurrentUrl, both, "\r"),
parse_hg_url(CurrentUrl1) =:= parse_hg_url(Url).
get_ref(Dir) ->
AbortMsg = io_lib:format("Get ref of hg dependency failed in ~ts", [Dir]),
{ok, RefString} =
rebar_utils:sh("hg -R \"" ++ rebar_utils:escape_double_quotes(Dir) ++ "\" --debug id -i",
[{use_stdout, false}, {debug_abort_on_error, AbortMsg}]),
rebar_string:trim(RefString, both, "\n").
get_tag_distance(Dir, Ref) ->
AbortMsg = io_lib:format("Get tag distance of hg dependency failed in ~ts", [Dir]),
{ok, LogString} =
rebar_utils:sh("hg -R \"" ++ rebar_utils:escape_double_quotes(Dir) ++ "\" "
"log --template \"{latesttag}-{latesttagdistance}\n\" "
"--rev " ++ rebar_utils:escape_chars(Ref),
[{use_stdout, false}, {debug_abort_on_error, AbortMsg}]),
Log = rebar_string:trim(LogString,
both, "\n"),
[Tag, Distance] = re:split(Log, "-([0-9]+)$",
[{parts,0}, {return,list}, unicode]),
{Tag, Distance}.
get_branch_ref(Dir, Branch) ->
AbortMsg = io_lib:format("Get branch ref of hg dependency failed in ~ts", [Dir]),
{ok, BranchRefString} =
rebar_utils:sh("hg -R \"" ++ rebar_utils:escape_double_quotes(Dir) ++
"\" log --template \"{node}\n\" --rev " ++ rebar_utils:escape_chars(Branch),
[{use_stdout, false}, {debug_abort_on_error, AbortMsg}]),
rebar_string:trim(BranchRefString, both, "\n").
maybe_warn_local_url(Url) ->
try
_ = parse_hg_url(Url),
ok
catch
_:_ ->
?WARN("URL format (~ts) unsupported.", [])
end.
parse_hg_url("ssh://" ++ HostPath) ->
[Host | Path] = rebar_string:lexemes(HostPath, "/"),
{Host, filename:rootname(filename:join(Path), ".hg")};
parse_hg_url("http://" ++ HostPath) ->
[Host | Path] = rebar_string:lexemes(HostPath, "/"),
{Host, filename:rootname(filename:join(Path), ".hg")};
parse_hg_url("https://" ++ HostPath) ->
[Host | Path] = rebar_string:lexemes(HostPath, "/"),
{Host, filename:rootname(filename:join(Path), ".hg")}.
check_type_support() ->
case get({is_supported, ?MODULE}) of
true ->
ok;
false ->
case rebar_utils:sh("hg --version", [{return_on_error, true},
{use_stdout, false}]) of
{error, _} ->
?ABORT("hg not installed", []);
_ ->
put({is_supported, ?MODULE}, true),
ok
end
end.
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