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
211
212
213
214
215
216
217
|
%% -*- erlang-indent-level: 4; indent-tabs-mode: nil; fill-column: 80 -*-
%%% Copyright 2012 Erlware, LLC. All Rights Reserved.
%%%
%%% This file is provided to you under the Apache License,
%%% Version 2.0 (the "License"); you may not use this file
%%% except in compliance with the License. You may obtain
%%% a copy of the License at
%%%
%%% http://www.apache.org/licenses/LICENSE-2.0
%%%
%%% Unless required by applicable law or agreed to in writing,
%%% software distributed under the License is distributed on an
%%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
%%% KIND, either express or implied. See the License for the
%%% specific language governing permissions and limitations
%%% under the License.
%%%---------------------------------------------------------------------------
%%% @author Eric Merritt <[email protected]>
%%% @copyright (C) 2012 Erlware, LLC.
%%%
%%% @doc Trivial utility file to help handle common tasks
-module(rlx_util).
-export([get_code_paths/2,
release_output_dir/2,
make_script/2,
mkdir_p/1,
to_binary/1,
to_string/1,
to_atom/1,
is_error/1,
error_reason/1,
indent/1,
optional_to_string/1,
wildcard_paths/1,
render/1,
render/2,
load_file/3,
template_files/0,
escript_foldl/3]).
-define(ONE_LEVEL_INDENT, " ").
%%============================================================================
%% types
%%============================================================================
%%============================================================================
%% API
%%============================================================================
%% @doc Generates the correct set of code paths for the system.
-spec get_code_paths(rlx_release:t(), file:name()) -> [file:name()].
get_code_paths(Release, OutDir) ->
LibDir = filename:join(OutDir, "lib"),
[filename:join([LibDir,
erlang:atom_to_list(rlx_app_info:name(App)) ++ "-" ++
rlx_app_info:original_vsn(App), "ebin"]) ||
App <- rlx_release:application_details(Release)].
-spec release_output_dir(rlx_state:t(), rlx_release:t()) -> string().
release_output_dir(State, Release) ->
OutputDir = rlx_state:output_dir(State),
filename:join([OutputDir,
"releases",
rlx_release:vsn(Release)]).
-spec make_script([term()],
fun(([term()]) -> Res)) -> Res.
make_script(Options, RunFun) ->
%% Erts 5.9 introduced a non backwards compatible option to
%% erlang this takes that into account
Erts = erlang:system_info(version),
case ec_semver:gte(Erts, "5.9") of
true ->
RunFun([no_warn_sasl | Options]);
_ ->
RunFun(Options)
end.
%% @doc Makes a directory including parent dirs if they are missing.
-spec mkdir_p(string()) -> ok | {error, Reason::file:posix()}.
mkdir_p(Path) ->
%% We are exploiting a feature of ensuredir that that creates all
%% directories up to the last element in the filename, then ignores
%% that last element. This way we ensure that the dir is created
%% and not have any worries about path names
DirName = filename:join([filename:absname(Path), "tmp"]),
filelib:ensure_dir(DirName).
%% @doc ident to the level specified
-spec indent(non_neg_integer()) -> iolist().
indent(Amount) when erlang:is_integer(Amount) ->
[?ONE_LEVEL_INDENT || _ <- lists:seq(1, Amount)].
-spec to_binary(iolist() | binary()) -> binary().
to_binary(String) when erlang:is_list(String) ->
erlang:iolist_to_binary(String);
to_binary(Bin) when erlang:is_binary(Bin) ->
Bin.
-spec to_string(binary() | string() | atom()) -> string().
to_string(Binary) when erlang:is_binary(Binary) ->
erlang:binary_to_list(Binary);
to_string(Atom) when erlang:is_atom(Atom) ->
erlang:atom_to_list(Atom);
to_string(Else) when erlang:is_list(Else) ->
Else.
-spec to_atom(atom() | string() | binary()) -> atom().
to_atom(Binary)
when erlang:is_binary(Binary) ->
erlang:list_to_atom(to_string(Binary));
to_atom(String)
when erlang:is_list(String) ->
erlang:list_to_atom(String);
to_atom(Atom)
when erlang:is_atom(Atom) ->
Atom.
%% @doc get the reason for a particular relx error
-spec error_reason(relx:error()) -> any().
error_reason({error, {_, Reason}}) ->
Reason.
%% @doc check to see if the value is a relx error
-spec is_error(relx:error() | any()) -> boolean().
is_error({error, _}) ->
true;
is_error(_) ->
false.
%% @doc convert optional argument to empty string if undefined
optional_to_string(undefined) ->
"";
optional_to_string(Value) when is_list(Value) ->
Value.
%% @doc expand wildcards and names in the given paths
-spec wildcard_paths([file:filename_all()]) -> [string()].
wildcard_paths(Paths) ->
[filename:absname(Expanded) || Path <- Paths, Expanded <- wildcard(Path)].
%% In case the given directory does not expand,
%% we return it back in a list so we trigger the
%% proper error reportings.
-spec wildcard(file:filename_all()) -> [string()].
wildcard(Path) when is_binary(Path) ->
wildcard(binary_to_list(Path));
wildcard(Path) when is_list(Path) ->
case filelib:wildcard(Path) of
[] -> [Path];
Paths -> Paths
end.
render(Template) ->
render(Template, []).
render(Template, Data) ->
{ok, mustache:render(ec_cnv:to_binary(Template), Data, [{key_type, atom}])}.
load_file(Files, escript, Name) ->
{Name, Bin} = lists:keyfind(Name, 1, Files),
Bin;
load_file(_Files, file, Name) ->
{ok, Bin} = file:read_file(Name),
Bin.
template_files() ->
find_priv_templates() ++ escript_files().
find_priv_templates() ->
Files = filelib:wildcard(filename:join([code:priv_dir(relx), "templates", "*"])),
lists:map(fun(File) ->
{ok, Bin} = file:read_file(File),
{filename:basename(File), Bin}
end, Files).
%% Scan the current escript for available files
escript_files() ->
try
{ok, Files} = escript_foldl(
fun(Name, _, GetBin, Acc) ->
[{filename:basename(Name), GetBin()} | Acc]
end, [], filename:absname(escript:script_name())),
Files
catch
_:_ ->
[]
end.
escript_foldl(Fun, Acc, File) ->
case escript:extract(File, [compile_source]) of
{ok, [_Shebang, _Comment, _EmuArgs, Body]} ->
case Body of
{source, BeamCode} ->
GetInfo = fun() -> file:read_file_info(File) end,
GetBin = fun() -> BeamCode end,
{ok, Fun(".", GetInfo, GetBin, Acc)};
{beam, BeamCode} ->
GetInfo = fun() -> file:read_file_info(File) end,
GetBin = fun() -> BeamCode end,
{ok, Fun(".", GetInfo, GetBin, Acc)};
{archive, ArchiveBin} ->
zip:foldl(Fun, Acc, {File, ArchiveBin})
end;
{error, _} = Error ->
Error
end.
%%%===================================================================
%%% Test Functions
%%%===================================================================
-ifndef(NOTEST).
-include_lib("eunit/include/eunit.hrl").
-endif.
|
