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rebar3_gpb_plugin
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1.2.0
1.0.1
A rebar3 gpb plugin for compiling .proto files
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Files
src/rebar3_gpb_plugin_prv.erl
-module(rebar3_gpb_plugin_prv).
-export([init/1,
do/1,
format_error/1]).
-define(PROVIDER, 'compile').
-define(DEPS, [app_discovery]).
%% ===================================================================
%% Public API
%% ===================================================================
-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
init(State) ->
Provider = providers:create([
{name, ?PROVIDER}, % The 'user friendly' name of the task
{namespace, protobuf},
{module, ?MODULE}, % The module implementation of the task
{bare, true}, % The task can be run by the user, always true
{deps, ?DEPS}, % The list of dependencies
{opts, []}, % list of options understood by the plugin
{example, "rebar3 protobuf compile"},
{short_desc, "Automatically compile .proto files using the gpb compiler"},
{desc, "Google Protobuf compiler"}
]),
{ok, rebar_state:add_provider(State, Provider)}.
-spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
do(State) ->
Apps = case rebar_state:current_app(State) of
undefined ->
rebar_state:project_apps(State);
AppInfo ->
[AppInfo]
end,
lists:foreach(fun(AppInfo) ->
Opts = rebar_app_info:opts(AppInfo),
{ok, GpbOpts} = dict:find(gpb_opts, Opts),
SourceDir = proplists:get_value(i, GpbOpts),
TargetDir = proplists:get_value(o_erl, GpbOpts),
ModuleNameSuffix = proplists:get_value(module_name_suffix, GpbOpts),
rebar_base_compiler:run(Opts, [],
SourceDir, ".proto",
TargetDir, ModuleNameSuffix ++ ".erl",
fun(Source, Target, Config) ->
compile(Source, Target, GpbOpts, Config)
end)
end, Apps),
{ok, State}.
-spec format_error(any()) -> iolist().
format_error(Reason) ->
io_lib:format("~p", [Reason]).
%% ===================================================================
%% Private API
%% ===================================================================
compile(Source, _Target, GpbOpts, _Config) ->
gpb_compile:file(filename:basename(Source), GpbOpts).