diff options
Diffstat (limited to 'lib/stdlib/src/binary.erl')
| -rw-r--r-- | lib/stdlib/src/binary.erl | 109 |
1 files changed, 32 insertions, 77 deletions
diff --git a/lib/stdlib/src/binary.erl b/lib/stdlib/src/binary.erl index af00410572..52b9fedc9c 100644 --- a/lib/stdlib/src/binary.erl +++ b/lib/stdlib/src/binary.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2010-2013. All Rights Reserved. +%% Copyright Ericsson AB 2010-2018. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -20,11 +20,11 @@ -module(binary). %% %% Implemented in this module: --export([split/2,split/3,replace/3,replace/4]). +-export([replace/3,replace/4]). -export_type([cp/0]). --opaque cp() :: {'am' | 'bm', binary()}. +-opaque cp() :: {'am' | 'bm', reference()}. -type part() :: {Start :: non_neg_integer(), Length :: integer()}. %%% BIFs. @@ -34,7 +34,8 @@ decode_unsigned/2, encode_unsigned/1, encode_unsigned/2, first/1, last/1, list_to_bin/1, longest_common_prefix/1, longest_common_suffix/1, match/2, match/3, matches/2, - matches/3, part/2, part/3, referenced_byte_size/1]). + matches/3, part/2, part/3, referenced_byte_size/1, + split/2, split/3]). -spec at(Subject, Pos) -> byte() when Subject :: binary(), @@ -46,23 +47,39 @@ at(_, _) -> -spec bin_to_list(Subject) -> [byte()] when Subject :: binary(). -bin_to_list(_) -> - erlang:nif_error(undef). +bin_to_list(Subject) -> + binary_to_list(Subject). -spec bin_to_list(Subject, PosLen) -> [byte()] when Subject :: binary(), PosLen :: part(). -bin_to_list(_, _) -> - erlang:nif_error(undef). +bin_to_list(Subject, {Pos, Len}) -> + bin_to_list(Subject, Pos, Len); +bin_to_list(_Subject, _BadArg) -> + erlang:error(badarg). -spec bin_to_list(Subject, Pos, Len) -> [byte()] when Subject :: binary(), Pos :: non_neg_integer(), Len :: integer(). -bin_to_list(_, _, _) -> - erlang:nif_error(undef). +bin_to_list(Subject, Pos, Len) when not is_binary(Subject); + not is_integer(Pos); + not is_integer(Len) -> + %% binary_to_list/3 allows bitstrings as long as the slice fits, and we + %% want to badarg when Pos/Len aren't integers instead of raising badarith + %% when adjusting args for binary_to_list/3. + erlang:error(badarg); +bin_to_list(Subject, Pos, 0) when Pos >= 0, Pos =< byte_size(Subject) -> + %% binary_to_list/3 doesn't handle this case. + []; +bin_to_list(_Subject, _Pos, 0) -> + erlang:error(badarg); +bin_to_list(Subject, Pos, Len) when Len < 0 -> + bin_to_list(Subject, Pos + Len, -Len); +bin_to_list(Subject, Pos, Len) when Len > 0 -> + binary_to_list(Subject, Pos + 1, Pos + Len). -spec compile_pattern(Pattern) -> cp() when Pattern :: binary() | [binary()]. @@ -198,19 +215,13 @@ part(_, _, _) -> referenced_byte_size(_) -> erlang:nif_error(undef). -%%% End of BIFs. - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% split -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -spec split(Subject, Pattern) -> Parts when Subject :: binary(), Pattern :: binary() | [binary()] | cp(), Parts :: [binary()]. -split(H,N) -> - split(H,N,[]). +split(_, _) -> + erlang:nif_error(undef). -spec split(Subject, Pattern, Options) -> Parts when Subject :: binary(), @@ -219,53 +230,10 @@ split(H,N) -> Option :: {scope, part()} | trim | global | trim_all, Parts :: [binary()]. -split(Haystack,Needles,Options) -> - try - {Part,Global,Trim,TrimAll} = - get_opts_split(Options,{no,false,false,false}), - Moptlist = case Part of - no -> - []; - {A,B} -> - [{scope,{A,B}}] - end, - MList = if - Global -> - binary:matches(Haystack,Needles,Moptlist); - true -> - case binary:match(Haystack,Needles,Moptlist) of - nomatch -> []; - Match -> [Match] - end - end, - do_split(Haystack,MList,0,Trim,TrimAll) - catch - _:_ -> - erlang:error(badarg) - end. - -do_split(H,[],N,true,_) when N >= byte_size(H) -> - []; -do_split(H,[],N,_,true) when N >= byte_size(H) -> - []; -do_split(H,[],N,_,_) -> - [binary:part(H,{N,byte_size(H)-N})]; -do_split(H,[{A,B}|T],N,Trim,TrimAll) -> - case binary:part(H,{N,A-N}) of - <<>> when TrimAll == true -> - do_split(H,T,A+B,Trim,TrimAll); - <<>> -> - Rest = do_split(H,T,A+B,Trim,TrimAll), - case {Trim, Rest} of - {true,[]} -> - []; - _ -> - [<<>> | Rest] - end; - Oth -> - [Oth | do_split(H,T,A+B,Trim,TrimAll)] - end. +split(_, _, _) -> + erlang:nif_error(undef). +%%% End of BIFs. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% replace @@ -352,19 +320,6 @@ splitat(H,N,[I|T]) -> %% Simple helper functions %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -get_opts_split([],{Part,Global,Trim,TrimAll}) -> - {Part,Global,Trim,TrimAll}; -get_opts_split([{scope,{A,B}} | T],{_Part,Global,Trim,TrimAll}) -> - get_opts_split(T,{{A,B},Global,Trim,TrimAll}); -get_opts_split([global | T],{Part,_Global,Trim,TrimAll}) -> - get_opts_split(T,{Part,true,Trim,TrimAll}); -get_opts_split([trim | T],{Part,Global,_Trim,TrimAll}) -> - get_opts_split(T,{Part,Global,true,TrimAll}); -get_opts_split([trim_all | T],{Part,Global,Trim,_TrimAll}) -> - get_opts_split(T,{Part,Global,Trim,true}); -get_opts_split(_,_) -> - throw(badopt). - get_opts_replace([],{Part,Global,Insert}) -> {Part,Global,Insert}; get_opts_replace([{scope,{A,B}} | T],{_Part,Global,Insert}) -> |