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
|
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% 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_otp_app).
-export([compile/2,
clean/2]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
compile(Config, File) ->
%% If we get an .app.src file, it needs to be pre-processed and
%% written out as a ebin/*.app file. That resulting file will then
%% be validated as usual.
{Config1, AppFile} = case rebar_app_utils:is_app_src(File) of
true ->
preprocess(Config, File);
false ->
{Config, File}
end,
%% Load the app file and validate it.
case rebar_app_utils:load_app_file(Config1, AppFile) of
{ok, Config2, AppName, AppData} ->
validate_name(AppName, AppFile),
%% In general, the list of modules is an important thing to validate
%% for compliance with OTP guidelines and upgrade procedures.
%% However, some people prefer not to validate this list.
case rebar_config:get_local(Config1, validate_app_modules, true) of
true ->
Modules = proplists:get_value(modules, AppData),
{validate_modules(AppName, Modules), Config2};
false ->
{ok, Config2}
end;
{error, Reason} ->
?ABORT("Failed to load app file ~s: ~p\n", [AppFile, Reason])
end.
clean(_Config, File) ->
%% If the app file is a .app.src, delete the generated .app file
case rebar_app_utils:is_app_src(File) of
true ->
case file:delete(rebar_app_utils:app_src_to_app(File)) of
ok ->
ok;
{error, enoent} ->
%% The file not existing is OK, we can ignore the error.
ok;
Other ->
Other
end;
false ->
ok
end.
%% ===================================================================
%% Internal functions
%% ===================================================================
preprocess(Config, AppSrcFile) ->
case rebar_app_utils:load_app_file(Config, AppSrcFile) of
{ok, Config1, AppName, AppData} ->
%% Look for a configuration file with vars we want to
%% substitute. Note that we include the list of modules available in
%% ebin/ and update the app data accordingly.
AppVars = load_app_vars(Config1) ++ [{modules, ebin_modules()}],
A1 = apply_app_vars(AppVars, AppData),
%% AppSrcFile may contain instructions for generating a vsn number
{Config2, Vsn} = rebar_app_utils:app_vsn(Config1, AppSrcFile),
A2 = lists:keystore(vsn, 1, A1, {vsn, Vsn}),
%% Build the final spec as a string
Spec = io_lib:format("~p.\n", [{application, AppName, A2}]),
%% Setup file .app filename and write new contents
AppFile = rebar_app_utils:app_src_to_app(AppSrcFile),
ok = file:write_file(AppFile, Spec),
%% Make certain that the ebin/ directory is available
%% on the code path
true = code:add_path(filename:absname(filename:dirname(AppFile))),
{Config2, AppFile};
{error, Reason} ->
?ABORT("Failed to read ~s for preprocessing: ~p\n",
[AppSrcFile, Reason])
end.
load_app_vars(Config) ->
case rebar_config:get_local(Config, app_vars_file, undefined) of
undefined ->
?INFO("No app_vars_file defined.\n", []),
[];
Filename ->
?INFO("Loading app vars from ~p\n", [Filename]),
{ok, Vars} = file:consult(Filename),
Vars
end.
apply_app_vars([], AppData) ->
AppData;
apply_app_vars([{Key, Value} | Rest], AppData) ->
AppData2 = lists:keystore(Key, 1, AppData, {Key, Value}),
apply_app_vars(Rest, AppData2).
validate_name(AppName, File) ->
%% Convert the .app file name to an atom -- check it against the
%% identifier within the file
ExpApp = list_to_atom(filename:basename(File, ".app")),
case ExpApp == AppName of
true ->
ok;
false ->
?ERROR("Invalid ~s: name of application (~p) "
"must match filename.\n", [File, AppName]),
?ABORT
end.
validate_modules(AppName, undefined) ->
?ERROR("Missing modules declaration in ~p.app~n", [AppName]),
?ABORT;
validate_modules(AppName, Mods) ->
%% Construct two sets -- one for the actual .beam files in ebin/
%% and one for the modules
%% listed in the .app file
EbinSet = ordsets:from_list(ebin_modules()),
ModSet = ordsets:from_list(Mods),
%% Identify .beam files listed in the .app, but not present in ebin/
case ordsets:subtract(ModSet, EbinSet) of
[] ->
ok;
MissingBeams ->
Msg1 = lists:flatten([io_lib:format("\t* ~p\n", [M]) ||
M <- MissingBeams]),
?ERROR("One or more modules listed in ~p.app are not "
"present in ebin/*.beam:\n~s", [AppName, Msg1]),
?ABORT
end,
%% Identify .beam files NOT list in the .app, but present in ebin/
case ordsets:subtract(EbinSet, ModSet) of
[] ->
ok;
MissingMods ->
Msg2 = lists:flatten([io_lib:format("\t* ~p\n", [M]) ||
M <- MissingMods]),
?ERROR("One or more .beam files exist that are not "
"listed in ~p.app:\n~s", [AppName, Msg2]),
?ABORT
end.
ebin_modules() ->
lists:sort([rebar_utils:beam_to_mod("ebin", N) ||
N <- rebar_utils:beams("ebin")]).
|
