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Merge pull request #458 from manderson26/ma/improve_variable_expansion

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Change env var delimiter to match non-word
This commit is contained in:
Fred Hebert 2015-02-25 14:22:26 -05:00
commit d4675a5b06
3 changed files with 53 additions and 2 deletions
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1
THANKS
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@ -133,3 +133,4 @@ Vlad Dumitrescu
stwind
Pavel Baturko
Igor Savchuk
Mark Anderson

4
src/rebar_utils.erl
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@ -254,8 +254,8 @@ expand_env_variable(InStr, VarName, RawVarValue) ->
ReOpts = [global, unicode, {return, list}],
VarValue = re:replace(RawVarValue, "\\\\", "\\\\\\\\", ReOpts),
%% Use a regex to match/replace:
%% Given variable "FOO": match $FOO\s | $FOOeol | ${FOO}
RegEx = io_lib:format("\\\$(~s(\\s|$)|{~s})", [VarName, VarName]),
%% Given variable "FOO", match $FOO\W | $FOOeol | ${FOO}.
RegEx = io_lib:format("\\\$(~s(\\W|$)|{~s})", [VarName, VarName]),
re:replace(InStr, RegEx, [VarValue, "\\2"], ReOpts)
end.

50
test/rebar_utils_tests.erl Normal file
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@ -0,0 +1,50 @@
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2015 Mark Anderson <mark@chef.io>
%%
%% 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.
%% -------------------------------------------------------------------
%% @author Mark Anderson <mark@chef.io>
%% @doc Tests functionality of rebar_utils module.
%% @copyright 2015 Mark Anderson
%% -------------------------------------------------------------------
-module(rebar_utils_tests).
-compile(export_all).
-include_lib("eunit/include/eunit.hrl").
expand_env_variable_test_() ->
[{"Ensure that variable expansion handles nonwhitespace",
fun() ->
Test = "$V $V/ $Vw",
?assertEqual("Val Val/ $Vw",
rebar_utils:expand_env_variable(Test, "V", "Val") )
end},
{"Ensure that variable expansion with braces works",
fun() ->
Test = "${V} ${V}/ ${V}w ${Vw}",
?assertEqual("Val Val/ Valw ${Vw}",
rebar_utils:expand_env_variable(Test, "V", "Val") )
end}].