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A bit of consolidation of version checking for scm clients; adding support for git

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This commit is contained in:
Dave Smith 2010-01-07 07:46:06 -07:00
parent 864d4b74d6
commit 47a430c3b8
1 changed files with 31 additions and 28 deletions
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59
src/rebar_deps.erl
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@ -31,8 +31,6 @@
-export([preprocess/2,
distclean/2]).
-define(HG_VERSION, "1.4").
%% ===================================================================
%% Public API
%% ===================================================================
@ -90,7 +88,6 @@ process_deps([{App, VsnRegex, Source} | Rest], Acc, Dir) ->
%% App may not be on the code path, or the version that is doesn't
%% match our regex. Either way, we want to pull our revision into
%% the deps dir and try to use that
require_source_engine(Source),
AppDir = filename:join(Dir, App),
use_source(AppDir, App, VsnRegex, Source),
process_deps(Rest, [AppDir | Acc], Dir)
@ -194,6 +191,7 @@ use_source(AppDir, App, VsnRegex, Source, Count) ->
[AppDir, VsnRegex])
end;
false ->
require_source_engine(Source),
download_source(AppDir, Source),
use_source(AppDir, App, VsnRegex, Source, Count-1)
end.
@ -201,39 +199,44 @@ use_source(AppDir, App, VsnRegex, Source, Count) ->
download_source(AppDir, {hg, Url, Rev}) ->
ok = filelib:ensure_dir(AppDir),
Cmd = ?FMT("hg clone -u ~s ~s", [Rev, Url]),
rebar_utils:sh(Cmd, [], filename:dirname(AppDir)).
rebar_utils:sh(Cmd, [], filename:dirname(AppDir));
download_source(AppDir, {git, Url, Rev}) ->
ok = filelib:ensure_dir(AppDir),
rebar_utils:sh(?FMT("git clone -n ~s", [Url]), [], filename:dirname(AppDir)),
rebar_utils:sh(?FMT("git checkout ~s", [Rev]), [], AppDir).
%% ===================================================================
%% Source helper functions
%% ===================================================================
source_engine_avail({hg, _, _}) ->
Path = os:find_executable("hg"),
?DEBUG("which hg = ~p\n", [Path]),
case Path of
source_engine_avail({Name, _, _}) when Name == hg; Name == git ->
case scm_client_vsn(Name) >= required_scm_client_vsn(Name) of
true ->
true;
false ->
false;
_ ->
ensure_required_scm_client(hg, Path)
end;
source_engine_avail(_) ->
false.
?ABORT("Rebar requires version ~p or higher of ~s\n",
[required_scm_client_vsn(Name), Name])
end.
%% We expect the initial part of the version string to be of the form:
%% "Mercurial Distributed SCM (version 1.4.1+20091201)". Rebar
%% requires version 1.4 or higher.
ensure_required_scm_client(hg, Path) ->
Info = os:cmd(Path ++ " --version"),
case re:run(Info, "version (\\d*\.\\d*\.\\d*)", [{capture, all_but_first, list}]) of
{match, [Vsn]} ->
case Vsn >= ?HG_VERSION of
true ->
true;
false ->
?ABORT("Rebar requires version ~p or higher of hg (~p)~n",
[?HG_VERSION, Path])
end;
scm_client_vsn(false, _VsnArg, _VsnRegex) ->
false;
scm_client_vsn(Path, VsnArg, VsnRegex) ->
Info = os:cmd(Path ++ VsnArg),
case re:run(Info, VsnRegex, [{capture, all_but_first, list}]) of
{match, Match} ->
list_to_tuple([list_to_integer(S) || S <- Match]);
_ ->
false
end.
required_scm_client_vsn(hg) -> {1, 4};
required_scm_client_vsn(git) -> {1, 6}.
scm_client_vsn(hg) ->
scm_client_vsn(os:find_executable(hg), " --version", "version (\\d+).(\\d+)");
scm_client_vsn(git) ->
scm_client_vsn(os:find_executable(git), " --version", "git version (\\d+).(\\d+)");
scm_client_vsn(_) ->
undefined.