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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(rebar_git_resource).
-behaviour(rebar_resource).
-export([lock/2
,download/3
,needs_update/2
,make_vsn/1]).
-include("rebar.hrl").
lock(AppDir, {git, Url, _}) ->
lock(AppDir, {git, Url});
lock(AppDir, {git, Url}) ->
AbortMsg = io_lib:format("Locking of git dependency failed in ~s", [AppDir]),
{ok, VsnString} =
rebar_utils:sh("git --git-dir='" ++ AppDir ++ "/.git' rev-parse --verify HEAD",
[{use_stdout, false}, {debug_abort_on_error, AbortMsg}]),
Ref = string:strip(VsnString, both, $\n),
{git, Url, {ref, Ref}}.
%% Return true if either the git url or tag/branch/ref is not the same as the currently
%% checked out git repo for the dep
needs_update(Dir, {git, Url, {tag, Tag}}) ->
{ok, Current} = rebar_utils:sh(?FMT("git describe --tags --exact-match", []),
[{cd, Dir}]),
Current1 = string:strip(string:strip(Current, both, $\n), both, $\r),
?DEBUG("Comparing git tag ~s with ~s", [Tag, Current1]),
not ((Current1 =:= Tag) andalso compare_url(Dir, Url));
needs_update(Dir, {git, Url, {branch, Branch}}) ->
{ok, Current} = rebar_utils:sh(?FMT("git symbolic-ref -q --short HEAD", []),
[{cd, Dir}]),
Current1 = string:strip(string:strip(Current, both, $\n), both, $\r),
?DEBUG("Comparing git branch ~s with ~s", [Branch, Current1]),
not ((Current1 =:= Branch) andalso compare_url(Dir, Url));
needs_update(Dir, {git, Url, "master"}) ->
needs_update(Dir, {git, Url, {branch, "master"}});
needs_update(Dir, {git, Url, Ref}) ->
{ok, Current} = rebar_utils:sh(?FMT("git rev-parse -q HEAD", []),
[{cd, Dir}]),
Current1 = string:strip(string:strip(Current, both, $\n), both, $\r),
Ref2 = case Ref of
{ref, Ref1} ->
Length = length(Current1),
if
Length >= 7 ->
lists:sublist(Ref1, Length);
true ->
Ref1
end;
Ref1 ->
Ref1
end,
?DEBUG("Comparing git ref ~s with ~s", [Ref1, Current1]),
not ((Current1 =:= Ref2) andalso compare_url(Dir, Url)).
compare_url(Dir, Url) ->
{ok, CurrentUrl} = rebar_utils:sh(?FMT("git config --get remote.origin.url", []),
[{cd, Dir}]),
CurrentUrl1 = string:strip(string:strip(CurrentUrl, both, $\n), both, $\r),
ParsedUrl = parse_git_url(Url),
ParsedCurrentUrl = parse_git_url(CurrentUrl1),
ParsedCurrentUrl =:= ParsedUrl.
parse_git_url("git@" ++ HostPath) ->
[Host, Path] = string:tokens(HostPath, ":"),
{Host, filename:rootname(Path, ".git")};
parse_git_url("git://" ++ HostPath) ->
[Host | Path] = string:tokens(HostPath, "/"),
{Host, filename:rootname(filename:join(Path), ".git")};
parse_git_url("https://" ++ HostPath) ->
[Host | Path] = string:tokens(HostPath, "/"),
{Host, filename:rootname(filename:join(Path), ".git")}.
download(Dir, {git, 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, {git, Url, {branch, "master"}}, State);
download(Dir, {git, 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, {git, Url, {branch, "master"}}, State);
download(Dir, {git, Url, {branch, Branch}}, _State) ->
ok = filelib:ensure_dir(Dir),
rebar_utils:sh(?FMT("git clone ~s ~s -b ~s --single-branch",
[Url, filename:basename(Dir), Branch]),
[{cd, filename:dirname(Dir)}]);
download(Dir, {git, Url, {tag, Tag}}, _State) ->
ok = filelib:ensure_dir(Dir),
rebar_utils:sh(?FMT("git clone ~s ~s -b ~s --single-branch",
[Url, filename:basename(Dir), Tag]),
[{cd, filename:dirname(Dir)}]);
download(Dir, {git, Url, {ref, Ref}}, _State) ->
ok = filelib:ensure_dir(Dir),
rebar_utils:sh(?FMT("git clone -n ~s ~s", [Url, filename:basename(Dir)]),
[{cd, filename:dirname(Dir)}]),
rebar_utils:sh(?FMT("git checkout -q ~s", [Ref]), [{cd, Dir}]);
download(Dir, {git, Url, Rev}, _State) ->
?WARN("WARNING: It is recommended to use {branch, Name}, {tag, Tag} or {ref, Ref}, otherwise updating the dep may not work as expected.", []),
ok = filelib:ensure_dir(Dir),
rebar_utils:sh(?FMT("git clone -n ~s ~s", [Url, filename:basename(Dir)]),
[{cd, filename:dirname(Dir)}]),
rebar_utils:sh(?FMT("git checkout -q ~s", [Rev]), [{cd, Dir}]).
make_vsn(Dir) ->
{ok, Cwd} = file:get_cwd(),
try
ok = file:set_cwd(Dir),
{Vsn, RawRef, RawCount} = collect_default_refcount(),
{plain, build_vsn_string(Vsn, RawRef, RawCount)}
after
file:set_cwd(Cwd)
end.
%% Internal functions
collect_default_refcount() ->
%% Get the tag timestamp and minimal ref from the system. The
%% timestamp is really important from an ordering perspective.
AbortMsg1 = "Gtting log of git dependency failed in " ++ rebar_dir:get_cwd(),
{ok, String} =
rebar_utils:sh("git log -n 1 --pretty=format:'%h\n' ",
[{use_stdout, false},
{debug_abort_on_error, AbortMsg1}]),
RawRef = string:strip(String, both, $\n),
{Tag, TagVsn} = parse_tags(),
{ok, RawCount} =
case Tag of
undefined ->
AbortMsg2 = "Getting rev-list of git depedency failed in " ++ rebar_dir:get_cwd(),
rebar_utils:sh("git rev-list HEAD | wc -l",
[{use_stdout, false},
{debug_abort_on_error, AbortMsg2}]);
_ ->
get_patch_count(Tag)
end,
{TagVsn, RawRef, RawCount}.
build_vsn_string(Vsn, RawRef, RawCount) ->
%% Cleanup the tag and the Ref information. Basically leading 'v's and
%% whitespace needs to go away.
RefTag = [".ref", re:replace(RawRef, "\\s", "", [global])],
Count = erlang:iolist_to_binary(re:replace(RawCount, "\\s", "", [global])),
%% Create the valid [semver](http://semver.org) version from the tag
case Count of
<<"0">> ->
erlang:binary_to_list(erlang:iolist_to_binary(Vsn));
_ ->
erlang:binary_to_list(erlang:iolist_to_binary([Vsn, "+build.",
Count, RefTag]))
end.
get_patch_count(RawRef) ->
AbortMsg = "Getting rev-list of git dep failed in " ++ rebar_dir:get_cwd(),
Ref = re:replace(RawRef, "\\s", "", [global]),
Cmd = io_lib:format("git rev-list ~s..HEAD | wc -l",
[Ref]),
rebar_utils:sh(Cmd,
[{use_stdout, false},
{debug_abort_on_error, AbortMsg}]).
parse_tags() ->
%% Don't abort on error, we want the bad return to be turned into 0.0.0
case rebar_utils:sh("git log --oneline --decorate | fgrep \"tag: \" -1000",
[{use_stdout, false}, return_on_error]) of
{error, _} ->
{undefined, "0.0.0"};
{ok, Line} ->
case re:run(Line, "(\\(|\\s)tag:\\s(v([^,\\)]+))", [{capture, [2, 3], list}]) of
{match,[Tag, Vsn]} ->
{Tag, Vsn};
nomatch ->
{undefined, "0.0.0"}
end
end.
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