From 77a0eb6fe4dca909c6fe63f00b6793ba759f1a63 Mon Sep 17 00:00:00 2001
From: Tuncer Ayaz <tuncer.ayaz@gmail.com>
Date: Mon, 5 Nov 2012 20:08:48 +0100
Subject: Fix #56 (always-on recursion)

Always-on recursive application of all rebar commands causes too many
issues. Recursive application is required for:
1. dealing with dependencies: get-deps, update-deps, and compile of deps
   right after get-deps or update-deps
2. projects with a riak-like apps/ project structure and dev process

The vast majority of projects are not structured like riak. Therefore,
moving forward it's best to (by default) restrict recursive behavior to
dealing with deps. This commit does that and also adds command line and
rebar.config options for controlling or configuring recursion. Also, we
introduce two meta commands: prepare-deps (equivalent to rebar -r
get-deps compile) and refresh-deps (equivalent to rebar -r update-deps
compile). riak-like projects can extend the list of recursive commands
(to include 'eunit' and 'compile') by adding
{recursive_cmds, [eunit, compile]} to rebar.config.
---
 src/rebar_metacmds.erl | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 src/rebar_metacmds.erl

(limited to 'src/rebar_metacmds.erl')

diff --git a/src/rebar_metacmds.erl b/src/rebar_metacmds.erl
new file mode 100644
index 0000000..6e223bd
--- /dev/null
+++ b/src/rebar_metacmds.erl
@@ -0,0 +1,56 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
+%% ex: ts=4 sw=4 et
+%% -------------------------------------------------------------------
+%%
+%% rebar: Erlang Build Tools
+%%
+%% Copyright (c) 2013-2014 Tuncer Ayaz
+%%
+%% Permission is hereby granted, free of charge, to any person obtaining a copy
+%% of this software and associated documentation files (the "Software"), to deal
+%% in the Software without restriction, including without limitation the rights
+%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+%% copies of the Software, and to permit persons to whom the Software is
+%% furnished to do so, subject to the following conditions:
+%%
+%% The above copyright notice and this permission notice shall be included in
+%% all copies or substantial portions of the Software.
+%%
+%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+%% THE SOFTWARE.
+%% -------------------------------------------------------------------
+-module(rebar_metacmds).
+
+-export(['prepare-deps'/2,
+         'refresh-deps'/2]).
+
+%% for internal use only
+-export([info/2]).
+
+-include("rebar.hrl").
+
+%% ===================================================================
+%% Public API
+%% ===================================================================
+'prepare-deps'(Config, _AppFile) ->
+    rebar:run(enable_recursion(Config), ["get-deps", "compile"]).
+
+'refresh-deps'(Config, _AppFile) ->
+    rebar:run(enable_recursion(Config), ["update-deps", "compile"]).
+
+%% ===================================================================
+%% Internal functions
+%% ===================================================================
+
+info(help, 'prepare-deps') ->
+    ?CONSOLE("Meta command to run 'rebar -r get-deps compile'.~n", []);
+info(help, 'refresh-deps') ->
+    ?CONSOLE("Meta command to run 'rebar -r update-deps compile'.~n", []).
+
+enable_recursion(Config) ->
+    rebar_config:set_xconf(Config, recursive, true).
-- 
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