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Diffstat (limited to 'src/rlx_string.erl')
| -rw-r--r-- | src/rlx_string.erl | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/rlx_string.erl b/src/rlx_string.erl new file mode 100644 index 0000000..1f9cc0c --- /dev/null +++ b/src/rlx_string.erl @@ -0,0 +1,23 @@ +%% Compatibility module for the string API changes between +%% OTP-19 and OTP-21, where Unicode support means the deprecation +%% of a lot of string functions. +-module(rlx_string). +-export([concat/2, lexemes/2, join/2]). + +-ifdef(unicode_str). +concat(Str1, Str2) -> unicode:characters_to_list([Str1,Str2]). +lexemes(Str, Separators) -> string:lexemes(Str, Separators). +-else. +concat(Str1, Str2) -> string:concat(Str1, Str2). +lexemes(Str, Separators) -> string:tokens(Str, Separators). +-endif. + +%% string:join/2 copy; string:join/2 is getting obsoleted +%% and replaced by lists:join/2, but lists:join/2 is too new +%% for version support (only appeared in 19.0) so it cannot be +%% used. Instead we just adopt join/2 locally and hope it works +%% for most unicode use cases anyway. +join([], Sep) when is_list(Sep) -> + []; +join([H|T], Sep) -> + H ++ lists:append([Sep ++ X || X <- T]). |