diff options
Diffstat (limited to 'src/rebar_deps.erl')
| -rw-r--r-- | src/rebar_deps.erl | 139 |
1 files changed, 131 insertions, 8 deletions
diff --git a/src/rebar_deps.erl b/src/rebar_deps.erl index 7335d58..02a34d6 100644 --- a/src/rebar_deps.erl +++ b/src/rebar_deps.erl @@ -37,8 +37,14 @@ preprocess(Config, _) -> DepsDir = rebar_config:get(Config, deps_dir, "deps"), %% Process the list of deps from the configuration - Dirs = process_deps(rebar_config:get(Config, deps, []), [], DepsDir), - {ok, Config, Dirs}. + case catch(process_deps(rebar_config:get(Config, deps, []), [], DepsDir)) of + Dirs when is_list(Dirs) -> + %% Filter out deps from config so sub-dirs don't wind up trying to d/l deps again + Config2 = rebar_config:delete(Config, deps), + {ok, Config2, Dirs}; + {'EXIT', Reason} -> + ?ABORT("Error while processing dependencies: ~p\n", [Reason]) + end. %% =================================================================== @@ -48,13 +54,130 @@ preprocess(Config, _) -> process_deps([], Acc, _Dir) -> Acc; process_deps([App | Rest], Acc, Dir) when is_atom(App) -> + require_app(App, ".*"), + process_deps(Rest, Acc, Dir); +process_deps([{App, VsnRegex} | Rest], Acc, Dir) when is_atom(App) -> + require_app(App, VsnRegex), + process_deps(Rest, Acc, Dir); +process_deps([{App, VsnRegex, Source} | Rest], Acc, Dir) -> + ?DEBUG("Process deps: ~p\n", [Rest]), + case is_app_available(App, VsnRegex) of + true -> + process_deps(Rest, Acc, Dir); + false -> + %% 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) + end; +process_deps([Other | _Rest], _Acc, _Dir) -> + ?ABORT("Invalid dependency specification ~p in ~s\n", + [Other, rebar_utils:get_cwd()]). + + + +require_app(App, VsnRegex) -> + case is_app_available(App, VsnRegex) of + true -> + ok; + false -> + %% The requested app is not available on the code path + ?ABORT("~s: Dependency ~s-~s not available.\n", + [rebar_utils:get_cwd(), App, VsnRegex]) + end. + +require_source_engine(Source) -> + case source_engine_avail(Source) of + true -> + ok; + false -> + ?ABORT("No command line interface available to process ~p\n", [Source]) + end. + + +is_app_available(App, VsnRegex) -> case code:lib_dir(App) of {error, bad_name} -> - %% The requested app is not available on the code path - ?ABORT("~s: Dependency ~s not available.\n", - [rebar_utils:get_cwd(), App]); + false; Path -> - ?INFO("Dependency ~s -> ~s\n", [App, Path]) - end, - process_deps(Rest, Acc, Dir). + is_app_available(App, VsnRegex, Path) + end. + +is_app_available(App, VsnRegex, Path) -> + case rebar_app_utils:is_app_dir(Path) of + {true, AppFile} -> + case rebar_app_utils:load_app_file(AppFile) of + {ok, App, AppData} -> + {vsn, Vsn} = lists:keyfind(vsn, 1, AppData), + ?INFO("Looking for ~s-~s ; found ~s-~s at ~s\n", + [App, VsnRegex, App, Vsn, Path]), + case re:run(Vsn, VsnRegex, [{capture, none}]) of + match -> + true; + nomatch -> + ?WARN("~s has version ~p; requested regex was ~s\n", + [AppFile, Vsn, VsnRegex]), + false + end; + {ok, OtherApp, _} -> + ?WARN("~s has application id ~p; expected ~p\n", [AppFile, OtherApp, App]), + false; + {error, Reason} -> + ?ABORT("Failed to parse ~s: ~p\n", [AppFile, Reason]) + end; + false -> + ?WARN("Expected ~s to be an app dir (containing ebin/*.app), but no .app found.\n", + [Path]), + false + end. + +use_source(AppDir, App, VsnRegex, Source) -> + use_source(AppDir, App, VsnRegex, Source, 3). + +use_source(_AppDir, _App, _VsnRegex, Source, 0) -> + ?ABORT("Failed to acquire source from ~p after 3 tries.\n", [Source]); +use_source(AppDir, App, VsnRegex, Source, Count) -> + case filelib:is_dir(AppDir) of + true -> + %% Already downloaded -- verify the versioning matches up with our regex + case is_app_available(App, VsnRegex, AppDir) of + true -> + %% Available version matches up -- we're good to go; add the + %% app dir to our code path + code:add_patha(filename:join(AppDir, ebin)), + ok; + false -> + %% The app that was downloaded doesn't match up (or had + %% errors or something). For the time being, abort. + ?ABORT("Dependency dir ~s does not satisfy version regex ~s.\n", + [AppDir, VsnRegex]) + end; + false -> + download_source(AppDir, Source), + use_source(AppDir, App, VsnRegex, Source, Count-1) + end. + +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)). + + +%% =================================================================== +%% Source helper functions +%% =================================================================== +source_engine_avail({hg, _, _}) -> + Res = os:cmd("which hg"), + ?DEBUG("which hg = ~p\n", [Res]), + case Res of + [] -> + false; + _ -> + true + end; +source_engine_avail(_) -> + false. |