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#!/usr/bin/env escript
%% -*- mode: erlang;erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ft=erlang ts=4 sw=4 et
main(_) ->
application:start(crypto),
application:start(asn1),
application:start(public_key),
application:start(ssl),
inets:start(),
inets:start(httpc, [{profile, rebar}]),
set_httpc_options(),
%% Fetch and build deps required to build rebar3
BaseDeps = [{providers, []}
,{getopt, []}
,{cf, []}
,{erlware_commons, ["ec_dictionary.erl", "ec_vsn.erl"]}
,{certifi, ["certifi_pt.erl"]}],
Deps = get_deps(),
[fetch_and_compile(Dep, Deps) || Dep <- BaseDeps],
%% Build rebar3 modules with compile:file
bootstrap_rebar3(),
%% Build rebar.app from rebar.app.src
{ok, App} = rebar_app_info:new(rebar, "3.4.4", filename:absname("_build/default/lib/rebar/")),
rebar_otp_app:compile(rebar_state:new(), App),
%% Because we are compiling files that are loaded already we want to silence
%% not_purged errors in rebar_erlc_compiler:opts_changed/1
error_logger:tty(false),
setup_env(),
os:putenv("REBAR_PROFILE", "bootstrap"),
RegistryFile = default_registry_file(),
case filelib:is_file(RegistryFile) of
true ->
ok;
false ->
rebar3:run(["update"])
end,
{ok, State} = rebar3:run(["compile"]),
reset_env(),
os:putenv("REBAR_PROFILE", ""),
DepsPaths = rebar_state:code_paths(State, all_deps),
code:add_pathsa(DepsPaths),
rebar3:run(["clean", "-a"]),
rebar3:run(["escriptize"]),
%% Done with compile, can turn back on error logger
error_logger:tty(true).
default_registry_file() ->
{ok, [[Home]]} = init:get_argument(home),
CacheDir = filename:join([Home, ".cache", "rebar3"]),
filename:join([CacheDir, "hex", "default", "registry"]).
fetch_and_compile({Name, ErlFirstFiles}, Deps) ->
case lists:keyfind(Name, 1, Deps) of
{Name, Vsn} ->
ok = fetch({pkg, atom_to_binary(Name, utf8), list_to_binary(Vsn)}, Name);
{Name, _, Source} ->
ok = fetch(Source, Name)
end,
%% Hack: erlware_commons depends on a .script file to check if it is being built with
%% rebar2 or rebar3. But since rebar3 isn't built yet it can't get the vsn with get_key.
%% So we simply make sure that file is deleted before compiling
file:delete("_build/default/lib/erlware_commons/rebar.config.script"),
compile(Name, ErlFirstFiles).
fetch({pkg, Name, Vsn}, App) ->
Dir = filename:join([filename:absname("_build/default/lib/"), App]),
case filelib:is_dir(Dir) of
false ->
CDN = "https://repo.hex.pm/tarballs",
Package = binary_to_list(<<Name/binary, "-", Vsn/binary, ".tar">>),
Url = join([CDN, Package], "/"),
case request(Url) of
{ok, Binary} ->
{ok, Contents} = extract(Binary),
ok = erl_tar:extract({binary, Contents}, [{cwd, Dir}, compressed]);
{error, {Reason, _}} ->
ReasonText = re:replace(atom_to_list(Reason), "_", " ", [global,{return,list}]),
io:format("Error: Unable to fetch package ~s ~s: ~s~n", [Name, Vsn, ReasonText])
end;
true ->
io:format("Dependency ~s already exists~n", [Name])
end.
extract(Binary) ->
{ok, Files} = erl_tar:extract({binary, Binary}, [memory]),
{"contents.tar.gz", Contents} = lists:keyfind("contents.tar.gz", 1, Files),
{ok, Contents}.
request(Url) ->
HttpOptions = [{relaxed, true} | get_proxy_auth()],
case httpc:request(get, {Url, []},
HttpOptions,
[{body_format, binary}],
rebar) of
{ok, {{_Version, 200, _Reason}, _Headers, Body}} ->
{ok, Body};
Error ->
Error
end.
get_rebar_config() ->
{ok, [[Home]]} = init:get_argument(home),
ConfDir = filename:join(Home, ".config/rebar3"),
case file:consult(filename:join(ConfDir, "rebar.config")) of
{ok, Config} ->
Config;
_ ->
[]
end.
get_http_vars(Scheme) ->
OS = case os:getenv(atom_to_list(Scheme)) of
Str when is_list(Str) -> Str;
_ -> []
end,
proplists:get_value(Scheme, get_rebar_config(), OS).
set_httpc_options() ->
set_httpc_options(https_proxy, get_http_vars(https_proxy)),
set_httpc_options(proxy, get_http_vars(http_proxy)).
set_httpc_options(_, []) ->
ok;
set_httpc_options(Scheme, Proxy) ->
{ok, {_, UserInfo, Host, Port, _, _}} = http_uri:parse(Proxy),
httpc:set_options([{Scheme, {{Host, Port}, []}}], rebar),
set_proxy_auth(UserInfo).
compile(App, FirstFiles) ->
Dir = filename:join(filename:absname("_build/default/lib/"), App),
filelib:ensure_dir(filename:join([Dir, "ebin", "dummy.beam"])),
code:add_path(filename:join(Dir, "ebin")),
FirstFilesPaths = [filename:join([Dir, "src", Module]) || Module <- FirstFiles],
Sources = FirstFilesPaths ++ filelib:wildcard(filename:join([Dir, "src", "*.erl"])),
[compile_file(X, [{i, filename:join(Dir, "include")}
,debug_info
,{outdir, filename:join(Dir, "ebin")}
,return | additional_defines()]) || X <- Sources].
compile_file(File, Opts) ->
case compile:file(File, Opts) of
{ok, _Mod} ->
ok;
{ok, _Mod, []} ->
ok;
{ok, _Mod, Ws} ->
io:format("~s~n", [format_warnings(File, Ws)]),
halt(1);
{error, Es, Ws} ->
io:format("~s ~s~n", [format_errors(File, Es), format_warnings(File, Ws)]),
halt(1)
end.
bootstrap_rebar3() ->
filelib:ensure_dir("_build/default/lib/rebar/ebin/dummy.beam"),
code:add_path("_build/default/lib/rebar/ebin/"),
ok = symlink_or_copy(filename:absname("src"),
filename:absname("_build/default/lib/rebar/src")),
Sources = ["src/rebar_resource.erl" | filelib:wildcard("src/*.erl")],
[compile_file(X, [{outdir, "_build/default/lib/rebar/ebin/"}
,return | additional_defines()]) || X <- Sources],
code:add_patha(filename:absname("_build/default/lib/rebar/ebin")).
%%rebar.hrl
-define(FMT(Str, Args), lists:flatten(io_lib:format(Str, Args))).
%%/rebar.hrl
%%rebar_file_utils
symlink_or_copy(Source, Target) ->
Link = case os:type() of
{win32, _} ->
Source;
_ ->
make_relative_path(Source, Target)
end,
case file:make_symlink(Link, Target) of
ok ->
ok;
{error, eexist} ->
ok;
{error, _} ->
cp_r([Source], Target)
end.
make_relative_path(Source, Target) ->
do_make_relative_path(filename:split(Source), filename:split(Target)).
do_make_relative_path([H|T1], [H|T2]) ->
do_make_relative_path(T1, T2);
do_make_relative_path(Source, Target) ->
Base = lists:duplicate(max(length(Target) - 1, 0), ".."),
filename:join(Base ++ Source).
cp_r([], _Dest) ->
ok;
cp_r(Sources, Dest) ->
case os:type() of
{unix, _} ->
EscSources = [escape_path(Src) || Src <- Sources],
SourceStr = join(EscSources, " "),
os:cmd(?FMT("cp -R ~s \"~s\"", [SourceStr, Dest])),
ok;
{win32, _} ->
lists:foreach(fun(Src) -> ok = cp_r_win32(Src,Dest) end, Sources),
ok
end.
xcopy_win32(Source,Dest)->
R = os:cmd(?FMT("xcopy \"~s\" \"~s\" /q /y /e 2> nul",
[filename:nativename(Source), filename:nativename(Dest)])),
case length(R) > 0 of
%% when xcopy fails, stdout is empty and and error message is printed
%% to stderr (which is redirected to nul)
true -> ok;
false ->
{error, lists:flatten(
io_lib:format("Failed to xcopy from ~s to ~s~n",
[Source, Dest]))}
end.
cp_r_win32({true, SourceDir}, {true, DestDir}) ->
%% from directory to directory
SourceBase = filename:basename(SourceDir),
ok = case file:make_dir(filename:join(DestDir, SourceBase)) of
{error, eexist} -> ok;
Other -> Other
end,
ok = xcopy_win32(SourceDir, filename:join(DestDir, SourceBase));
cp_r_win32({false, Source} = S,{true, DestDir}) ->
%% from file to directory
cp_r_win32(S, {false, filename:join(DestDir, filename:basename(Source))});
cp_r_win32({false, Source},{false, Dest}) ->
%% from file to file
{ok,_} = file:copy(Source, Dest),
ok;
cp_r_win32({true, SourceDir}, {false, DestDir}) ->
case filelib:is_regular(DestDir) of
true ->
%% From directory to file? This shouldn't happen
{error, lists:flatten(
io_lib:format("Cannot copy dir (~p) to file (~p)\n",
[SourceDir, DestDir]))};
false ->
%% Specifying a target directory that doesn't currently exist.
%% So let's attempt to create this directory
case filelib:ensure_dir(filename:join(DestDir, "dummy")) of
ok ->
ok = xcopy_win32(SourceDir, DestDir);
{error, Reason} ->
{error, lists:flatten(
io_lib:format("Unable to create dir ~p: ~p\n",
[DestDir, Reason]))}
end
end;
cp_r_win32(Source,Dest) ->
Dst = {filelib:is_dir(Dest), Dest},
lists:foreach(fun(Src) ->
ok = cp_r_win32({filelib:is_dir(Src), Src}, Dst)
end, filelib:wildcard(Source)),
ok.
escape_path(Str) ->
re:replace(Str, "([ ()?])", "\\\\&", [global, {return, list}]).
%%/rebar_file_utils
setup_env() ->
%% We don't need or want relx providers loaded yet
application:load(rebar),
{ok, Providers} = application:get_env(rebar, providers),
Providers1 = Providers -- [rebar_prv_release,
rebar_prv_relup,
rebar_prv_tar],
application:set_env(rebar, providers, Providers1).
reset_env() ->
%% Reset the env so we get all providers
application:unset_env(rebar, providers),
application:unload(rebar),
application:load(rebar).
get_deps() ->
case file:consult("rebar.lock") of
{ok, [[]]} ->
%% Something went wrong in a previous build, lock file shouldn't be empty
io:format("Empty list in lock file, deleting rebar.lock~n"),
ok = file:delete("rebar.lock"),
{ok, Config} = file:consult("rebar.config"),
proplists:get_value(deps, Config);
{ok, [Deps]} ->
[{binary_to_atom(Name, utf8), "", Source} || {Name, Source, _Level} <- Deps];
_ ->
{ok, Config} = file:consult("rebar.config"),
proplists:get_value(deps, Config)
end.
format_errors(Source, Errors) ->
format_errors(Source, "", Errors).
format_warnings(Source, Warnings) ->
format_warnings(Source, Warnings, []).
format_warnings(Source, Warnings, Opts) ->
Prefix = case lists:member(warnings_as_errors, Opts) of
true -> "";
false -> "Warning: "
end,
format_errors(Source, Prefix, Warnings).
format_errors(_MainSource, Extra, Errors) ->
[begin
[format_error(Source, Extra, Desc) || Desc <- Descs]
end
|| {Source, Descs} <- Errors].
format_error(AbsSource, Extra, {{Line, Column}, Mod, Desc}) ->
ErrorDesc = Mod:format_error(Desc),
io_lib:format("~s:~w:~w: ~s~s~n", [AbsSource, Line, Column, Extra, ErrorDesc]);
format_error(AbsSource, Extra, {Line, Mod, Desc}) ->
ErrorDesc = Mod:format_error(Desc),
io_lib:format("~s:~w: ~s~s~n", [AbsSource, Line, Extra, ErrorDesc]);
format_error(AbsSource, Extra, {Mod, Desc}) ->
ErrorDesc = Mod:format_error(Desc),
io_lib:format("~s: ~s~s~n", [AbsSource, Extra, ErrorDesc]).
additional_defines() ->
[{d, D} || {Re, D} <- [{"^[0-9]+", namespaced_types},
{"^R1[4|5]", deprecated_crypto},
{"^2", unicode_str},
{"^((1[8|9])|2)", rand_module}],
is_otp_release(Re)].
is_otp_release(ArchRegex) ->
case re:run(otp_release(), ArchRegex, [{capture, none}]) of
match ->
true;
nomatch ->
false
end.
otp_release() ->
otp_release1(erlang:system_info(otp_release)).
%% If OTP <= R16, otp_release is already what we want.
otp_release1([$R,N|_]=Rel) when is_integer(N) ->
Rel;
%% If OTP >= 17.x, erlang:system_info(otp_release) returns just the
%% major version number, we have to read the full version from
%% a file. See http://www.erlang.org/doc/system_principles/versions.html
%% Read vsn string from the 'OTP_VERSION' file and return as list without
%% the "\n".
otp_release1(Rel) ->
File = filename:join([code:root_dir(), "releases", Rel, "OTP_VERSION"]),
case file:read_file(File) of
{error, _} ->
Rel;
{ok, Vsn} ->
%% It's fine to rely on the binary module here because we can
%% be sure that it's available when the otp_release string does
%% not begin with $R.
Size = byte_size(Vsn),
%% The shortest vsn string consists of at least two digits
%% followed by "\n". Therefore, it's safe to assume Size >= 3.
case binary:part(Vsn, {Size, -3}) of
<<"**\n">> ->
%% The OTP documentation mentions that a system patched
%% using the otp_patch_apply tool available to licensed
%% customers will leave a '**' suffix in the version as a
%% flag saying the system consists of application versions
%% from multiple OTP versions. We ignore this flag and
%% drop the suffix, given for all intents and purposes, we
%% cannot obtain relevant information from it as far as
%% tooling is concerned.
binary:bin_to_list(Vsn, {0, Size - 3});
_ ->
binary:bin_to_list(Vsn, {0, Size - 1})
end
end.
set_proxy_auth([]) ->
ok;
set_proxy_auth(UserInfo) ->
[Username, Password] = re:split(UserInfo, ":",
[{return, list}, {parts,2}, unicode]),
%% password may contain url encoded characters, need to decode them first
put(proxy_auth, [{proxy_auth, {Username, http_uri:decode(Password)}}]).
get_proxy_auth() ->
case get(proxy_auth) of
undefined -> [];
ProxyAuth -> ProxyAuth
end.
%% string:join/2 copy; string:join/2 is getting obsoleted
%% and replaced by lists:join/2, but lists:join/2 is too new
%% for version support (only appeared in 19.0) so it cannot be
%% used. Instead we just adopt join/2 locally and hope it works
%% for most unicode use cases anyway.
join([], Sep) when is_list(Sep) ->
[];
join([H|T], Sep) ->
H ++ lists:append([Sep ++ X || X <- T]).
|