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Add compile-time switch for OTP-20 string funcs

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Allows support for Unicode data, and prevents compile warnings that will
start with OTP-20.
This commit is contained in:
Fred Hebert 2017-11-01 11:26:17 -04:00
parent fa1ec76a9b
commit f8f72b7cc5
4 changed files with 28 additions and 4 deletions
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13
src/ec_git_vsn.erl
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@ -88,7 +88,16 @@ get_patch_count(RawRef) ->
parse_tags(Pattern) ->
Cmd = io_lib:format("git describe --abbrev=0 --match \"~s*\"", [Pattern]),
Tag = os:cmd(Cmd),
Vsn = string:substr(Tag, string:len(Pattern) + 1),
Vsn1 = string:strip(Vsn, left, $v),
Vsn = slice(Tag, len(Pattern) + 1),
Vsn1 = trim(Vsn, left, $v),
{Tag, Vsn1}.
-ifdef(unicode_str).
len(Str) -> string:length(Str).
trim(Str, Dir, Chars) -> string:trim(Str, Dir, Chars).
slice(Str, Len) -> string:slice(Str, Len).
-else.
len(Str) -> string:len(Str).
trim(Str, Dir, Chars) -> string:strip(Str, Dir, Chars).
slice(Str, Len) -> string:substr(Str, Len).
-endif.