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-module(rebar_prv_deps_tree).
-behaviour(provider).
-export([init/1,
do/1,
format_error/1]).
-include("rebar.hrl").
-define(PROVIDER, tree).
-define(DEPS, [lock]).
-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
init(State) ->
State1 = rebar_state:add_provider(
State,
providers:create([{name, ?PROVIDER},
{module, ?MODULE},
{bare, true},
{deps, ?DEPS},
{example, "rebar3 tree"},
{short_desc, "Print dependency tree."},
{desc, ""},
{opts, [{verbose, $v, "verbose", undefined, "Print repo and branch/tag/ref for git and hg deps"}]}])),
{ok, State1}.
-spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
do(State) ->
{Args, _} = rebar_state:command_parsed_args(State),
Verbose = proplists:get_value(verbose, Args, false),
print_deps_tree(rebar_state:all_deps(State), Verbose, State),
{ok, State}.
-spec format_error(any()) -> iolist().
format_error(Reason) ->
io_lib:format("~p", [Reason]).
%% Internal functions
print_deps_tree(SrcDeps, Verbose, State) ->
D = lists:foldl(fun(App, Dict) ->
Name = rebar_app_info:name(App),
Vsn = rebar_app_info:original_vsn(App),
Source = rebar_app_info:source(App),
Parent = rebar_app_info:parent(App),
dict:append_list(Parent, [{Name, Vsn, Source}], Dict)
end, dict:new(), SrcDeps),
ProjectAppNames = [{rebar_app_info:name(App)
,rebar_app_info:original_vsn(App)
,project} || App <- rebar_state:project_apps(State)],
io:setopts([{encoding, unicode}]),
case dict:find(root, D) of
{ok, Children} ->
print_children("", lists:keysort(1, Children++ProjectAppNames), D, Verbose);
error ->
print_children("", lists:keysort(1, ProjectAppNames), D, Verbose)
end.
print_children(_, [], _, _) ->
ok;
print_children(Prefix, [{Name, Vsn, Source} | Rest], Dict, Verbose) ->
Prefix1 = case Rest of
[] ->
io:format("~s└─ ", [Prefix]),
[Prefix, " "];
_ ->
io:format("~s├─ ", [Prefix]),
[Prefix, "│ "]
end,
io:format("~s─~s (~s)~n", [Name, Vsn, type(Source, Verbose)]),
case dict:find(Name, Dict) of
{ok, Children} ->
print_children(Prefix1, lists:keysort(1, Children), Dict, Verbose),
print_children(Prefix, Rest, Dict, Verbose);
error ->
print_children(Prefix, Rest, Dict, Verbose)
end.
type(project, _) ->
"project app";
type(Source, Verbose) when is_tuple(Source) ->
case {element(1, Source), Verbose} of
{pkg, _} ->
"hex package";
{Other, false} ->
io_lib:format("~s repo", [Other]);
{_, true} ->
io_lib:format("~s", [element(2, Source)])
end.
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