1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
%%
%% 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_core).
-export([run/1]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
run(Args) ->
%% Filter all the flags (i.e. string of form key=value) from the
%% command line arguments. What's left will be the commands to run.
Commands = filter_flags(Args, []),
%% Pre-load the rebar app so that we get default configuration
application:load(rebar),
%% Initialize logging system
rebar_log:init(),
%% From the current working directory, search recursively and find
%% all the application and release directories. We always terminate the
%% recursion at an application or release directory.
Cwd = rebar_utils:get_cwd(),
case target_type(Cwd) of
undefined ->
Targets = find_targets(Cwd);
{Type, Filename} ->
Targets = [{Type, Cwd, Filename}]
end,
%% Prefix all the app targets to the code path so that inter-app compilation
%% works properly
update_code_path(Targets),
%% Finally, apply the specified command to each target
apply_commands(Targets, Commands).
%% ===================================================================
%% Internal functions
%% ===================================================================
%%
%% Seperate all commands (single-words) from flags (key=value) and store
%% values into the rebar_config global storage.
%%
filter_flags([], Commands) ->
lists:reverse(Commands);
filter_flags([Item | Rest], Commands) ->
case string:tokens(Item, "=") of
[Command] ->
filter_flags(Rest, [Command | Commands]);
[KeyStr, Value] ->
Key = list_to_atom(KeyStr),
rebar_config:set_global(Key, Value),
filter_flags(Rest, Commands);
Other ->
?CONSOLE("Ignoring command line argument: ~p\n", [Other]),
filter_flags(Rest, Commands)
end.
%%
%% Recursively find all the targets starting at a root directory
%%
find_targets(Root) ->
{ok, Files} = file:list_dir(Root),
find_targets(Files, Root, [], 1).
find_targets([], _Root, Acc, _Depth) ->
Acc;
find_targets(_Files, _Root, Acc, 10) ->
Acc;
find_targets([F | Rest], Root, Acc, Depth) ->
AbsName = filename:join([Root, F]),
case target_type(AbsName) of
undefined ->
case filelib:is_dir(AbsName) of
true ->
{ok, SubFiles} = file:list_dir(AbsName),
Acc2 = find_targets(SubFiles, AbsName, Acc, Depth+1);
false ->
Acc2 = Acc
end;
{Type, Filename} ->
Acc2 = [{Type, AbsName, Filename} | Acc]
end,
find_targets(Rest, Root, Acc2, Depth).
%%
%% Determine the target type of a given file: app, rel or undefined
%%
target_type(AbsName) ->
case rebar_app_utils:is_app_dir(AbsName) of
{true, AppFile} ->
{app, AppFile};
false ->
case rebar_rel_utils:is_rel_dir(AbsName) of
true ->
{rel, ""};
false ->
undefined
end
end.
%%
%% Given a command and target type, determine if the command is applicable
%%
valid_command(compile, app) -> true;
valid_command(install, app) -> true;
valid_command(clean, _Any) -> true;
valid_command(_, _) -> false.
%%
%% Add all application targets to the front of the code path
%%
update_code_path([]) ->
ok;
update_code_path([{app, Dir, _} | Rest]) ->
EbinDir = filename:join([Dir, "ebin"]),
true = code:add_patha(EbinDir),
update_code_path(Rest);
update_code_path([_ | Rest]) ->
update_code_path(Rest).
apply_commands(_Targets, []) ->
ok;
apply_commands(Targets, [CommandStr | Rest]) ->
%% Convert the command into an atom for convenience
Command = list_to_atom(CommandStr),
%% Filter out all the targets, based on the specified command.
FilteredTargets = [{Type, Dir, Filename} || {Type, Dir, Filename} <- Targets,
valid_command(Command, Type) == true],
case apply_command(FilteredTargets, Command) of
ok ->
apply_commands(Targets, Rest);
Other ->
Other
end.
apply_command([], _Command) ->
ok;
apply_command([{Type, Dir, File} | Rest], Command) ->
ok = file:set_cwd(Dir),
Config = rebar_config:new(Dir),
%% Provide some info on where we are
?CONSOLE("==> ~s (~s)\n", [filename:basename(Dir), Command]),
%% Pull the list of modules that are associated with Type operations. Each module
%% will be inspected for a function matching Command and if found, will execute that.
Modules = rebar_config:get_modules(Config, Type),
case catch(run_modules(Modules, Command, Config, File)) of
ok ->
apply_command(Rest, Command);
Other ->
?ERROR("~p failed while processing ~s: ~p", [Command, Dir, Other])
end.
run_modules([], _Command, _Config, _File) ->
ok;
run_modules([Module | Rest], Command, Config, File) ->
case invoke_command(Module, Command, Config, File) of
ok ->
run_modules(Rest, Command, Config, File);
{error, Reason} ->
{error, Reason}
end.
invoke_command(Module, Command, Config, File) ->
Exports = Module:module_info(exports),
case lists:member({Command, 2}, Exports) of
true ->
Module:Command(Config, File);
false ->
?DEBUG("Skipping ~s:~s/2 (not exported)\n", [Module, Command]),
ok
end.
|
