packaging for obs.osmocom.org, based on https://salsa.debian.org/erlang-team/packages/rebar3
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rebar3/src/rebar_dir.erl

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%%% @doc utility functions for directory and path handling of all kind.
-module(rebar_dir).
-export([base_dir/1,
profile_dir/2,
profile_dir_name/1,
deps_dir/1,
deps_dir/2,
root_dir/1,
checkouts_dir/1,
checkouts_dir/2,
checkouts_out_dir/1,
checkouts_out_dir/2,
plugins_dir/1,
lib_dirs/1,
home_dir/0,
global_config_dir/1,
global_config/1,
global_config/0,
global_cache_dir/1,
local_cache_dir/1,
get_cwd/0,
template_globals/1,
template_dir/1,
processing_base_dir/1,
processing_base_dir/2,
make_relative_path/2,
src_dirs/1, src_dirs/2,
src_dir_opts/2, recursive/2,
extra_src_dirs/1, extra_src_dirs/2,
all_src_dirs/1, all_src_dirs/3,
retarget_path/2,
format_source_file_name/1,
format_source_file_name/2]).
-include("rebar.hrl").
%% @doc returns the directory root for build artifacts
%% for the current profile, such as `_build/default/'.
-spec base_dir(rebar_state:t()) -> file:filename_all().
base_dir(State) ->
profile_dir(rebar_state:opts(State), rebar_state:current_profiles(State)).
%% @doc returns the directory root for build artifacts for a given set
%% of profiles.
-spec profile_dir(rebar_dict(), [atom(), ...]) -> file:filename_all().
profile_dir(Opts, Profiles) ->
BasePath =
case Profiles of
[global | _] -> ?MODULE:global_cache_dir(Opts);
[_|_] -> rebar_opts:get(Opts, base_dir, ?DEFAULT_BASE_DIR)
end,
DirName = profile_dir_name_(Profiles),
filename:join(BasePath, DirName).
%% @doc returns the directory name for build artifacts for a given set
%% of profiles.
-spec profile_dir_name(rebar_state:t()) -> file:filename_all().
profile_dir_name(State) ->
profile_dir_name_(rebar_state:current_profiles(State)).
-spec profile_dir_name_([atom(), ...]) -> file:filename_all().
profile_dir_name_(Profiles)
when is_list(Profiles) ->
case [rebar_utils:to_list(P) || P <- Profiles] of
["global" | _] -> "";
["bootstrap", "default"] -> "default";
["default"] -> "default";
%% drop `default' from the profile dir if it's implicit and reverse order
%% of profiles to match order passed to `as`
["default"|NonDefaultNames] -> rebar_string:join(NonDefaultNames, "+")
end.
%% @doc returns the directory where dependencies should be placed
%% given the current profile.
-spec deps_dir(rebar_state:t()) -> file:filename_all().
deps_dir(State) ->
filename:join(base_dir(State), rebar_state:get(State, deps_dir, ?DEFAULT_DEPS_DIR)).
%% @doc returns the directory where a dependency should be placed
%% given the current profile, based on its app name. Expects to be passed
%% the result of `deps_dir/1' as a first argument.
-spec deps_dir(file:filename_all(), file:filename_all()) -> file:filename_all().
deps_dir(DepsDir, App) ->
filename:join(DepsDir, App).
%% @doc returns the absolute path for the project root (by default,
%% the current working directory for the currently running escript).
root_dir(State) ->
filename:absname(rebar_state:get(State, root_dir, ?DEFAULT_ROOT_DIR)).
%% @doc returns the expected location of the `_checkouts' directory.
-spec checkouts_dir(rebar_state:t()) -> file:filename_all().
checkouts_dir(State) ->
rebar_file_utils:canonical_path(filename:join(root_dir(State), rebar_state:get(State, checkouts_dir, ?DEFAULT_CHECKOUTS_DIR))).
%% @doc returns the expected location of a given app in the checkouts
%% directory for the project.
-spec checkouts_dir(rebar_state:t(), file:filename_all()) -> file:filename_all().
checkouts_dir(State, App) ->
filename:join(checkouts_dir(State), App).
%% @doc returns the location of the directory checkouts are built to
-spec checkouts_out_dir(rebar_state:t()) -> file:filename_all().
checkouts_out_dir(State) ->
filename:join(base_dir(State), rebar_state:get(State, checkouts_out_dir, ?DEFAULT_CHECKOUTS_OUT_DIR)).
%% @doc returns the expected location of a given app in the checkouts
%% directory for the project.
-spec checkouts_out_dir(rebar_state:t(), file:filename_all()) -> file:filename_all().
checkouts_out_dir(State, App) ->
filename:join(checkouts_out_dir(State), App).
%% @doc Returns the directory where plugins are located.
-spec plugins_dir(rebar_state:t()) -> file:filename_all().
plugins_dir(State) ->
case lists:member(global, rebar_state:current_profiles(State)) of
true ->
filename:join([base_dir(State), global_config_dir(State), rebar_state:get(State, plugins_dir, ?DEFAULT_PLUGINS_DIR)]);
false ->
filename:join(base_dir(State), rebar_state:get(State, plugins_dir, ?DEFAULT_PLUGINS_DIR))
end.
%% @doc returns the list of relative path where the project applications can
%% be located.
-spec lib_dirs(rebar_state:t()) -> file:filename_all().
lib_dirs(State) ->
rebar_state:get(State, project_app_dirs, ?DEFAULT_PROJECT_APP_DIRS).
%% @doc returns the user's home directory.
-spec home_dir() -> file:filename_all().
home_dir() ->
{ok, [[Home]]} = init:get_argument(home),
Home.
%% @doc returns the directory where the global configuration files for rebar3
%% may be stored.
-spec global_config_dir(rebar_state:t()) -> file:filename_all().
global_config_dir(State) ->
filename:join([rebar_config_dir(State), ".config", "rebar3"]).
rebar_config_dir(State) ->
case os:getenv("REBAR_GLOBAL_CONFIG_DIR") of
false ->
rebar_state:get(State, global_rebar_dir, home_dir());
ConfDir ->
ConfDir
end.
%% @doc returns the path of the global rebar.config file
-spec global_config(rebar_state:t()) -> file:filename_all().
global_config(State) ->
filename:join(global_config_dir(State), "rebar.config").
%% @doc returns the default path of the global rebar.config file
-spec global_config() -> file:filename_all().
global_config() ->
Home = home_dir(),
filename:join([Home, ".config", "rebar3", "rebar.config"]).
%% @doc returns the location for the global cache directory
-spec global_cache_dir(rebar_dict()) -> file:filename_all().
global_cache_dir(Opts) ->
Home = home_dir(),
rebar_opts:get(Opts, global_rebar_dir, filename:join([Home, ".cache", "rebar3"])).
%% @doc appends the cache directory to the path passed to this function.
-spec local_cache_dir(file:filename_all()) -> file:filename_all().
local_cache_dir(Dir) ->
filename:join(Dir, ".rebar3").
%% @doc returns the current working directory, with some specific
%% conversions and handling done to be cross-platform compatible.
-spec get_cwd() -> file:filename_all().
get_cwd() ->
{ok, Dir} = file:get_cwd(),
%% On windows cwd may return capital letter for drive,
%% for example C:/foobar. But as said in http://www.erlang.org/doc/man/filename.html#join-1
%% filename:join/1,2 anyway will convert drive-letter to lowercase, so we have to "internalize"
%% cwd as soon as it possible.
filename:join([Dir]).
%% @doc returns the file location for the global template
%% configuration variables file.
-spec template_globals(rebar_state:t()) -> file:filename_all().
template_globals(State) ->
filename:join([global_config_dir(State), "templates", "globals"]).
%% @doc returns the location for the global template directory
-spec template_dir(rebar_state:t()) -> file:filename_all().
template_dir(State) ->
filename:join([global_config_dir(State), "templates"]).
%% @doc checks if the current working directory is the base directory
%% for the project.
-spec processing_base_dir(rebar_state:t()) -> boolean().
processing_base_dir(State) ->
Cwd = get_cwd(),
processing_base_dir(State, Cwd).
%% @doc checks if the passed in directory is the base directory for
%% the project.
-spec processing_base_dir(rebar_state:t(), file:filename()) -> boolean().
processing_base_dir(State, Dir) ->
AbsDir = filename:absname(Dir),
AbsDir =:= rebar_state:get(State, base_dir).
%% @doc take a source and a target path, and relativize the target path
%% onto the source.
%%
%% Example:
%% ```
%% 1> rebar_dir:make_relative_path("a/b/c/d/file", "a/b/file").
%% "c/d/file"
%% 2> rebar_dir:make_relative_path("a/b/file", "a/b/c/d/file").
%% "../../file"
%% '''
-spec make_relative_path(file:filename(), file:filename()) -> file:filename().
make_relative_path(Source, Target) ->
AbsSource = rebar_file_utils:normalized_path(Source),
AbsTarget = rebar_file_utils:normalized_path(Target),
do_make_relative_path(filename:split(AbsSource), filename:split(AbsTarget)).
%% @private based on fragments of paths, replace the number of common
%% segments by `../' bits, and add the rest of the source alone after it
-spec do_make_relative_path([string()], [string()]) -> file:filename().
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).
%%% @doc
%%% `src_dirs' and `extra_src_dirs' can be configured with options
%%% like this:
%%% ```
%%% {src_dirs,[{"foo",[{recursive,false}]}]}
%%% {extra_src_dirs,[{"bar",[recursive]}]} (equivalent to {recursive,true})
%%% '''
%%% `src_dirs/1,2' and `extra_src_dirs/1,2' return only the list of
%%% directories for the `src_dirs' and `extra_src_dirs' options
%%% respectively, while `src_dirs_opts/2' returns the options list for
%%% the given directory, no matter if it is configured as `src_dirs' or
%%% `extra_src_dirs'.
-spec src_dirs(rebar_dict()) -> list(file:filename_all()).
src_dirs(Opts) -> src_dirs(Opts, []).
%% @doc same as `src_dirs/1', but allows to pass in a list of default options.
-spec src_dirs(rebar_dict(), list(file:filename_all())) -> list(file:filename_all()).
src_dirs(Opts, Default) ->
src_dirs(src_dirs, Opts, Default).
%% @doc same as `src_dirs/1', but for the `extra_src_dirs' options
-spec extra_src_dirs(rebar_dict()) -> list(file:filename_all()).
extra_src_dirs(Opts) -> extra_src_dirs(Opts, []).
%% @doc same as `src_dirs/2', but for the `extra_src_dirs' options
-spec extra_src_dirs(rebar_dict(), list(file:filename_all())) -> list(file:filename_all()).
extra_src_dirs(Opts, Default) ->
src_dirs(extra_src_dirs, Opts, Default).
%% @private agnostic version of src_dirs and extra_src_dirs.
src_dirs(Type, Opts, Default) ->
lists:usort([
case D0 of
{D,_} -> rebar_file_utils:normalize_relative_path(D);
_ -> rebar_file_utils:normalize_relative_path(D0)
end || D0 <- raw_src_dirs(Type,Opts,Default)]).
%% @private extracts the un-formatted src_dirs or extra_src_dirs
%% options as configured.
raw_src_dirs(Type, Opts, Default) ->
ErlOpts = rebar_opts:erl_opts(Opts),
Vs = proplists:get_all_values(Type, ErlOpts),
case lists:append([rebar_opts:get(Opts, Type, []) | Vs]) of
[] -> Default;
Dirs -> Dirs
end.
%% @doc returns all the source directories (`src_dirs' and
%% `extra_src_dirs').
-spec all_src_dirs(rebar_dict()) -> list(file:filename_all()).
all_src_dirs(Opts) -> all_src_dirs(Opts, [], []).
%% @doc returns all the source directories (`src_dirs' and
%% `extra_src_dirs') while being able to configure defaults for both.
-spec all_src_dirs(rebar_dict(), list(file:filename_all()), list(file:filename_all())) ->
list(file:filename_all()).
all_src_dirs(Opts, SrcDefault, ExtraDefault) ->
lists:usort(src_dirs(Opts, SrcDefault) ++ extra_src_dirs(Opts, ExtraDefault)).
%%% @doc
%%% Return the list of options for the given src directory
%%% If the same option is given multiple times for a directory in the
%%% config, the priority order is: first occurrence of `src_dirs'
%%% followed by first occurrence of `extra_src_dirs'.
-spec src_dir_opts(rebar_dict(), file:filename_all()) -> [{atom(),term()}].
src_dir_opts(Opts, Dir) ->
RawSrcDirs = raw_src_dirs(src_dirs, Opts, []),
RawExtraSrcDirs = raw_src_dirs(extra_src_dirs, Opts, []),
AllOpts = [Opt || {D, Opt} <- RawSrcDirs++RawExtraSrcDirs, D==Dir],
lists:ukeysort(1, proplists:unfold(lists:append(AllOpts))).
%%% @doc
%%% Return the value of the 'recursive' option for the given directory.
%%% If not given, the value of 'recursive' in the 'erlc_compiler'
%%% options is used, and finally the default is 'true'.
-spec recursive(rebar_dict(), file:filename_all()) -> boolean().
recursive(Opts, Dir) ->
DirOpts = src_dir_opts(Opts, Dir),
Default = proplists:get_value(recursive,
rebar_opts:get(Opts, erlc_compiler, []),
true),
R = proplists:get_value(recursive, DirOpts, Default),
R.
%% @doc given a path if that path is an ancestor of an app dir, return the path relative to that
%% apps outdir. If the path is not an ancestor to any app dirs but is an ancestor of the
%% project root, return the path relative to the project base_dir. If it is not an ancestor
%% of either return it unmodified
-spec retarget_path(rebar_state:t(), string()) -> string().
retarget_path(State, Path) ->
ProjectApps = rebar_state:project_apps(State),
retarget_path(State, Path, ProjectApps).
%% @private worker for retarget_path/2
%% @end
%% not relative to any apps in project, check to see it's relative to
%% project root
retarget_path(State, Path, []) ->
case rebar_file_utils:path_from_ancestor(rebar_file_utils:canonical_path(Path), rebar_state:dir(State)) of
{ok, NewPath} -> filename:join([base_dir(State), NewPath]);
%% not relative to project root, don't modify
{error, badparent} -> Path
end;
%% relative to current app, retarget to the same dir relative to
%% the app's out_dir
retarget_path(State, Path, [App|Rest]) ->
case rebar_file_utils:path_from_ancestor(rebar_file_utils:canonical_path(Path), rebar_app_info:dir(App)) of
{ok, NewPath} -> filename:join([rebar_app_info:out_dir(App), NewPath]);
{error, badparent} -> retarget_path(State, Path, Rest)
end.
format_source_file_name(Path) ->
format_source_file_name(Path, dict:new()).
format_source_file_name(Path, Opts) ->
Type = case rebar_opts:get(Opts, compiler_source_format,
?DEFAULT_COMPILER_SOURCE_FORMAT) of
V when V == absolute; V == relative; V == build ->
V;
Other ->
warn_source_format_once(Other)
end,
case Type of
absolute -> resolve_linked_source(Path);
build -> Path;
relative ->
Cwd = rebar_dir:get_cwd(),
rebar_dir:make_relative_path(resolve_linked_source(Path), Cwd)
end.
%% @private displays a warning for the compiler source format option
%% only once
-spec warn_source_format_once(term()) -> ok.
warn_source_format_once(Format) ->
Warn = application:get_env(rebar, warn_source_format) =/= {ok, false},
application:set_env(rebar, warn_source_format, false),
case Warn of
false ->
ok;
true ->
?WARN("Invalid argument ~p for compiler_source_format - "
"assuming ~ts~n", [Format, ?DEFAULT_COMPILER_SOURCE_FORMAT])
end.
%% @private takes a filename and canonicalizes its path if it is a link.
-spec resolve_linked_source(file:filename()) -> file:filename().
resolve_linked_source(Src) ->
{Dir, Base} = rebar_file_utils:split_dirname(Src),
filename:join(rebar_file_utils:resolve_link(Dir), Base).