aboutsummaryrefslogtreecommitdiffstats
path: root/lib/stdlib/src/string.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/stdlib/src/string.erl')
-rw-r--r--lib/stdlib/src/string.erl747
1 files changed, 516 insertions, 231 deletions
diff --git a/lib/stdlib/src/string.erl b/lib/stdlib/src/string.erl
index 5a4d2df2a6..e01bb7d85e 100644
--- a/lib/stdlib/src/string.erl
+++ b/lib/stdlib/src/string.erl
@@ -74,15 +74,16 @@
-export([to_upper/1, to_lower/1]).
%%
-import(lists,[member/2]).
-
-compile({no_auto_import,[length/1]}).
+-compile({inline, [btoken/2, rev/1, append/2, stack/2, search_compile/1]}).
+-define(ASCII_LIST(CP1,CP2), CP1 < 256, CP2 < 256, CP1 =/= $\r).
-export_type([grapheme_cluster/0]).
-type grapheme_cluster() :: char() | [char()].
-type direction() :: 'leading' | 'trailing'.
--dialyzer({no_improper_lists, stack/2}).
+-dialyzer({no_improper_lists, [stack/2, length_b/3]}).
%%% BIFs internal (not documented) should not to be used outside of this module
%%% May be removed
-export([list_to_float/1, list_to_integer/1]).
@@ -127,8 +128,10 @@ is_empty(_) -> false.
%% Count the number of grapheme clusters in chardata
-spec length(String::unicode:chardata()) -> non_neg_integer().
+length(<<CP1/utf8, Bin/binary>>) ->
+ length_b(Bin, CP1, 0);
length(CD) ->
- length_1(unicode_util:gc(CD), 0).
+ length_1(CD, 0).
%% Convert a string to a list of grapheme clusters
-spec to_graphemes(String::unicode:chardata()) -> [grapheme_cluster()].
@@ -176,6 +179,8 @@ equal(A, B, true, Norm) ->
%% Reverse grapheme clusters
-spec reverse(String::unicode:chardata()) -> [grapheme_cluster()].
+reverse(<<CP1/utf8, Rest/binary>>) ->
+ reverse_b(Rest, CP1, []);
reverse(CD) ->
reverse_1(CD, []).
@@ -186,7 +191,10 @@ reverse(CD) ->
Start :: non_neg_integer(),
Slice :: unicode:chardata().
slice(CD, N) when is_integer(N), N >= 0 ->
- slice_l(CD, N, is_binary(CD)).
+ case slice_l0(CD, N) of
+ [] when is_binary(CD) -> <<>>;
+ Res -> Res
+ end.
-spec slice(String, Start, Length) -> Slice when
String::unicode:chardata(),
@@ -195,9 +203,15 @@ slice(CD, N) when is_integer(N), N >= 0 ->
Slice :: unicode:chardata().
slice(CD, N, Length)
when is_integer(N), N >= 0, is_integer(Length), Length > 0 ->
- slice_trail(slice_l(CD, N, is_binary(CD)), Length);
+ case slice_l0(CD, N) of
+ [] when is_binary(CD) -> <<>>;
+ L -> slice_trail(L, Length)
+ end;
slice(CD, N, infinity) ->
- slice_l(CD, N, is_binary(CD));
+ case slice_l0(CD, N) of
+ [] when is_binary(CD) -> <<>>;
+ Res -> Res
+ end;
slice(CD, _, 0) ->
case is_binary(CD) of
true -> <<>>;
@@ -256,18 +270,22 @@ trim(Str, Dir) ->
Dir :: direction() | 'both',
Characters :: [grapheme_cluster()].
trim(Str, _, []) -> Str;
+trim(Str, leading, [Sep]) when is_list(Str), Sep < 256 ->
+ trim_ls(Str, Sep);
trim(Str, leading, Sep) when is_list(Sep) ->
- trim_l(Str, search_pattern(Sep));
-trim(Str, trailing, Sep) when is_list(Sep) ->
- trim_t(Str, 0, search_pattern(Sep));
-trim(Str, both, Sep0) when is_list(Sep0) ->
- Sep = search_pattern(Sep0),
- trim_t(trim_l(Str,Sep), 0, Sep).
+ trim_l(Str, Sep);
+trim(Str, trailing, [Sep]) when is_list(Str), Sep < 256 ->
+ trim_ts(Str, Sep);
+trim(Str, trailing, Seps0) when is_list(Seps0) ->
+ Seps = search_pattern(Seps0),
+ trim_t(Str, 0, Seps);
+trim(Str, both, Sep) when is_list(Sep) ->
+ trim(trim(Str,leading,Sep), trailing, Sep).
%% Delete trailing newlines or \r\n
-spec chomp(String::unicode:chardata()) -> unicode:chardata().
chomp(Str) ->
- trim_t(Str,0, {[[$\r,$\n],$\n], [$\r,$\n], [<<$\r>>,<<$\n>>]}).
+ trim(Str, trailing, [[$\r,$\n],$\n]).
%% Split String into two parts where the leading part consists of Characters
-spec take(String, Characters) -> {Leading, Trailing} when
@@ -300,8 +318,7 @@ take(Str, [], Complement, Dir) ->
{true, leading} -> {Str, Empty};
{true, trailing} -> {Empty, Str}
end;
-take(Str, Sep0, false, leading) ->
- Sep = search_pattern(Sep0),
+take(Str, Sep, false, leading) ->
take_l(Str, Sep, []);
take(Str, Sep0, true, leading) ->
Sep = search_pattern(Sep0),
@@ -461,6 +478,7 @@ replace(String, SearchPattern, Replacement, Where) ->
SeparatorList::[grapheme_cluster()]) ->
[unicode:chardata()].
lexemes([], _) -> [];
+lexemes(Str, []) -> [Str];
lexemes(Str, Seps0) when is_list(Seps0) ->
Seps = search_pattern(Seps0),
lexemes_m(Str, Seps, []).
@@ -494,13 +512,13 @@ find(String, SearchPattern, leading) ->
find(String, SearchPattern, trailing) ->
find_r(String, unicode:characters_to_list(SearchPattern), nomatch).
-%% Fetch first codepoint and return rest in tail
+%% Fetch first grapheme cluster and return rest in tail
-spec next_grapheme(String::unicode:chardata()) ->
maybe_improper_list(grapheme_cluster(),unicode:chardata()) |
{error,unicode:chardata()}.
next_grapheme(CD) -> unicode_util:gc(CD).
-%% Fetch first grapheme cluster and return rest in tail
+%% Fetch first codepoint and return rest in tail
-spec next_codepoint(String::unicode:chardata()) ->
maybe_improper_list(char(),unicode:chardata()) |
{error,unicode:chardata()}.
@@ -508,10 +526,23 @@ next_codepoint(CD) -> unicode_util:cp(CD).
%% Internals
-length_1([_|Rest], N) ->
- length_1(unicode_util:gc(Rest), N+1);
-length_1([], N) ->
- N.
+length_1([CP1|[CP2|_]=Cont], N) when ?ASCII_LIST(CP1,CP2) ->
+ length_1(Cont, N+1);
+length_1(Str, N) ->
+ case unicode_util:gc(Str) of
+ [] -> N;
+ [_|Rest] -> length_1(Rest, N+1)
+ end.
+
+length_b(<<CP2/utf8, Rest/binary>>, CP1, N)
+ when ?ASCII_LIST(CP1,CP2) ->
+ length_b(Rest, CP2, N+1);
+length_b(Bin0, CP1, N) ->
+ [_|Bin1] = unicode_util:gc([CP1|Bin0]),
+ case unicode_util:cp(Bin1) of
+ [] -> N+1;
+ [CP3|Bin] -> length_b(Bin, CP3, N+1)
+ end.
equal_1([A|AR], [B|BR]) when is_integer(A), is_integer(B) ->
A =:= B andalso equal_1(AR, BR);
@@ -550,29 +581,66 @@ equal_norm_nocase(A0, B0, Norm) ->
{L1,L2} when is_list(L1), is_list(L2) -> false
end.
+reverse_1([CP1|[CP2|_]=Cont], Acc) when ?ASCII_LIST(CP1,CP2) ->
+ reverse_1(Cont, [CP1|Acc]);
reverse_1(CD, Acc) ->
case unicode_util:gc(CD) of
[GC|Rest] -> reverse_1(Rest, [GC|Acc]);
[] -> Acc
end.
-slice_l(CD, N, Binary) when N > 0 ->
+reverse_b(<<CP2/utf8, Rest/binary>>, CP1, Acc)
+ when ?ASCII_LIST(CP1,CP2) ->
+ reverse_b(Rest, CP2, [CP1|Acc]);
+reverse_b(Bin0, CP1, Acc) ->
+ [GC|Bin1] = unicode_util:gc([CP1|Bin0]),
+ case unicode_util:cp(Bin1) of
+ [] -> [GC|Acc];
+ [CP3|Bin] -> reverse_b(Bin, CP3, [GC|Acc])
+ end.
+
+slice_l0(<<CP1/utf8, Bin/binary>>, N) when N > 0 ->
+ slice_lb(Bin, CP1, N);
+slice_l0(L, N) ->
+ slice_l(L, N).
+
+slice_l([CP1|[CP2|_]=Cont], N) when ?ASCII_LIST(CP1,CP2),N > 0 ->
+ slice_l(Cont, N-1);
+slice_l(CD, N) when N > 0 ->
case unicode_util:gc(CD) of
- [_|Cont] -> slice_l(Cont, N-1, Binary);
- [] when Binary -> <<>>;
+ [_|Cont] -> slice_l(Cont, N-1);
[] -> []
end;
-slice_l(Cont, 0, Binary) ->
- case is_empty(Cont) of
- true when Binary -> <<>>;
- _ -> Cont
+slice_l(Cont, 0) ->
+ Cont.
+
+slice_lb(<<CP2/utf8, Bin/binary>>, CP1, N) when ?ASCII_LIST(CP1,CP2), N > 1 ->
+ slice_lb(Bin, CP2, N-1);
+slice_lb(Bin, CP1, N) ->
+ [_|Rest] = unicode_util:gc([CP1|Bin]),
+ if N > 1 ->
+ case unicode_util:cp(Rest) of
+ [CP2|Cont] -> slice_lb(Cont, CP2, N-1);
+ [] -> <<>>
+ end;
+ N =:= 1 ->
+ Rest
end.
+slice_trail(Orig, N) when is_binary(Orig) ->
+ case Orig of
+ <<CP1/utf8, Bin/binary>> when N > 0 ->
+ Length = slice_bin(Bin, CP1, N),
+ Sz = byte_size(Orig) - Length,
+ <<Keep:Sz/binary, _/binary>> = Orig,
+ Keep;
+ _ -> <<>>
+ end;
slice_trail(CD, N) when is_list(CD) ->
- slice_list(CD, N);
-slice_trail(CD, N) when is_binary(CD) ->
- slice_bin(CD, N, CD).
+ slice_list(CD, N).
+slice_list([CP1|[CP2|_]=Cont], N) when ?ASCII_LIST(CP1,CP2),N > 0 ->
+ [CP1|slice_list(Cont, N-1)];
slice_list(CD, N) when N > 0 ->
case unicode_util:gc(CD) of
[GC|Cont] -> append(GC, slice_list(Cont, N-1));
@@ -581,17 +649,16 @@ slice_list(CD, N) when N > 0 ->
slice_list(_, 0) ->
[].
-slice_bin(CD, N, Orig) when N > 0 ->
- case unicode_util:gc(CD) of
- [_|Cont] -> slice_bin(Cont, N-1, Orig);
- [] -> Orig
+slice_bin(<<CP2/utf8, Bin/binary>>, CP1, N) when ?ASCII_LIST(CP1,CP2), N > 0 ->
+ slice_bin(Bin, CP2, N-1);
+slice_bin(CD, CP1, N) when N > 0 ->
+ [_|Bin] = unicode_util:gc([CP1|CD]),
+ case unicode_util:cp(Bin) of
+ [CP2|Cont] -> slice_bin(Cont, CP2, N-1);
+ [] -> 0
end;
-slice_bin([], 0, Orig) ->
- Orig;
-slice_bin(CD, 0, Orig) ->
- Sz = byte_size(Orig) - byte_size(CD),
- <<Keep:Sz/binary, _/binary>> = Orig,
- Keep.
+slice_bin(CD, CP1, 0) ->
+ byte_size(CD)+byte_size(<<CP1/utf8>>).
uppercase_list(CPs0) ->
case unicode_util:uppercase(CPs0) of
@@ -641,16 +708,31 @@ casefold_bin(CPs0, Acc) ->
[] -> Acc
end.
-
+%% Fast path for ascii searching for one character in lists
+trim_ls([CP1|[CP2|_]=Cont]=Str, Sep)
+ when ?ASCII_LIST(CP1,CP2) ->
+ case Sep of
+ CP1 -> trim_ls(Cont, Sep);
+ _ -> Str
+ end;
+trim_ls(Str, Sep) ->
+ trim_l(Str, [Sep]).
+
+trim_l([CP1|[CP2|_]=Cont]=Str, Sep)
+ when ?ASCII_LIST(CP1,CP2) ->
+ case lists:member(CP1, Sep) of
+ true -> trim_l(Cont, Sep);
+ false -> Str
+ end;
trim_l([Bin|Cont0], Sep) when is_binary(Bin) ->
case bin_search_inv(Bin, Cont0, Sep) of
{nomatch, Cont} -> trim_l(Cont, Sep);
Keep -> Keep
end;
-trim_l(Str, {GCs, _, _}=Sep) when is_list(Str) ->
+trim_l(Str, Sep) when is_list(Str) ->
case unicode_util:gc(Str) of
[C|Cs] ->
- case lists:member(C, GCs) of
+ case lists:member(C, Sep) of
true -> trim_l(Cs, Sep);
false -> Str
end;
@@ -662,15 +744,51 @@ trim_l(Bin, Sep) when is_binary(Bin) ->
[Keep] -> Keep
end.
-trim_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+%% Fast path for ascii searching for one character in lists
+trim_ts([Sep|Cs1]=Str, Sep) ->
+ case Cs1 of
+ [] -> [];
+ [CP2|_] when ?ASCII_LIST(Sep,CP2) ->
+ Tail = trim_ts(Cs1, Sep),
+ case is_empty(Tail) of
+ true -> [];
+ false -> [Sep|Tail]
+ end;
+ _ ->
+ trim_t(Str, 0, search_pattern([Sep]))
+ end;
+trim_ts([CP|Cont],Sep) when is_integer(CP) ->
+ [CP|trim_ts(Cont, Sep)];
+trim_ts(Str, Sep) ->
+ trim_t(Str, 0, search_pattern([Sep])).
+
+trim_t([CP1|Cont]=Cs0, _, {GCs,CPs,_}=Seps) when is_integer(CP1) ->
+ case lists:member(CP1, CPs) of
+ true ->
+ [GC|Cs1] = unicode_util:gc(Cs0),
+ case lists:member(GC, GCs) of
+ true ->
+ Tail = trim_t(Cs1, 0, Seps),
+ case is_empty(Tail) of
+ true -> [];
+ false -> append(GC,Tail)
+ end;
+ false ->
+ append(GC,trim_t(Cs1, 0, Seps))
+ end;
+ false ->
+ [CP1|trim_t(Cont, 0, Seps)]
+ end;
+trim_t([Bin|Cont0], N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
<<_:N/binary, Rest/binary>> = Bin,
- case bin_search(Rest, Cont0, Sep) of
+ Seps = search_compile(Seps0),
+ case bin_search(Rest, Cont0, Seps) of
{nomatch,_} ->
- stack(Bin, trim_t(Cont0, 0, Sep));
+ stack(Bin, trim_t(Cont0, 0, Seps));
[SepStart|Cont1] ->
- case bin_search_inv(SepStart, Cont1, Sep) of
+ case bin_search_inv(SepStart, Cont1, GCs) of
{nomatch, Cont} ->
- Tail = trim_t(Cont, 0, Sep),
+ Tail = trim_t(Cont, 0, Seps),
case is_empty(Tail) of
true ->
KeepSz = byte_size(Bin) - byte_size(SepStart),
@@ -682,67 +800,69 @@ trim_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
end;
[NonSep|Cont] when is_binary(NonSep) ->
KeepSz = byte_size(Bin) - byte_size(NonSep),
- trim_t([Bin|Cont], KeepSz, Sep)
+ trim_t([Bin|Cont], KeepSz, Seps)
end
end;
-trim_t(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
- case unicode_util:cp(Str) of
- [CP|Cs] ->
- case lists:member(CP, CPs) of
+trim_t(Str, 0, {GCs,_,_}=Seps) when is_list(Str) ->
+ case unicode_util:gc(Str) of
+ [GC|Cs1] ->
+ case lists:member(GC, GCs) of
true ->
- [GC|Cs1] = unicode_util:gc(Str),
- case lists:member(GC, GCs) of
- true ->
- Tail = trim_t(Cs1, 0, Sep),
- case is_empty(Tail) of
- true -> [];
- false -> append(GC,Tail)
- end;
- false ->
- append(GC,trim_t(Cs1, 0, Sep))
+ Tail = trim_t(Cs1, 0, Seps),
+ case is_empty(Tail) of
+ true -> [];
+ false -> append(GC,Tail)
end;
false ->
- append(CP,trim_t(Cs, 0, Sep))
+ append(GC,trim_t(Cs1, 0, Seps))
end;
[] -> []
end;
-trim_t(Bin, N, Sep) when is_binary(Bin) ->
+trim_t(Bin, N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
<<_:N/binary, Rest/binary>> = Bin,
- case bin_search(Rest, Sep) of
+ Seps = search_compile(Seps0),
+ case bin_search(Rest, [], Seps) of
{nomatch,_} -> Bin;
[SepStart] ->
- case bin_search_inv(SepStart, [], Sep) of
+ case bin_search_inv(SepStart, [], GCs) of
{nomatch,_} ->
KeepSz = byte_size(Bin) - byte_size(SepStart),
<<Keep:KeepSz/binary, _/binary>> = Bin,
Keep;
[NonSep] ->
KeepSz = byte_size(Bin) - byte_size(NonSep),
- trim_t(Bin, KeepSz, Sep)
+ trim_t(Bin, KeepSz, Seps)
end
end.
-take_l([Bin|Cont0], Sep, Acc) when is_binary(Bin) ->
- case bin_search_inv(Bin, Cont0, Sep) of
+
+take_l([CP1|[CP2|_]=Cont]=Str, Seps, Acc)
+ when ?ASCII_LIST(CP1,CP2) ->
+ case lists:member(CP1, Seps) of
+ true -> take_l(Cont, Seps, [CP1|Acc]);
+ false -> {rev(Acc), Str}
+ end;
+take_l([Bin|Cont0], Seps, Acc) when is_binary(Bin) ->
+ case bin_search_inv(Bin, Cont0, Seps) of
{nomatch, Cont} ->
Used = cp_prefix(Cont0, Cont),
- take_l(Cont, Sep, [unicode:characters_to_binary([Bin|Used])|Acc]);
+ take_l(Cont, Seps, [unicode:characters_to_binary([Bin|Used])|Acc]);
[Bin1|_]=After when is_binary(Bin1) ->
First = byte_size(Bin) - byte_size(Bin1),
<<Keep:First/binary, _/binary>> = Bin,
{btoken(Keep,Acc), After}
end;
-take_l(Str, {GCs, _, _}=Sep, Acc) when is_list(Str) ->
+take_l(Str, Seps, Acc) when is_list(Str) ->
case unicode_util:gc(Str) of
[C|Cs] ->
- case lists:member(C, GCs) of
- true -> take_l(Cs, Sep, append(rev(C),Acc));
+ case lists:member(C, Seps) of
+ true -> take_l(Cs, Seps, append(rev(C),Acc));
false -> {rev(Acc), Str}
end;
[] -> {rev(Acc), []}
end;
-take_l(Bin, Sep, Acc) when is_binary(Bin) ->
- case bin_search_inv(Bin, [], Sep) of
+take_l(Bin, Seps, Acc) when is_binary(Bin) ->
+ case bin_search_inv(Bin, [], Seps) of
{nomatch,_} ->
{btoken(Bin, Acc), <<>>};
[After] ->
@@ -751,27 +871,41 @@ take_l(Bin, Sep, Acc) when is_binary(Bin) ->
{btoken(Keep, Acc), After}
end.
-take_lc([Bin|Cont0], Sep, Acc) when is_binary(Bin) ->
- case bin_search(Bin, Cont0, Sep) of
+
+take_lc([CP1|Cont]=Str0, {GCs,CPs,_}=Seps, Acc) when is_integer(CP1) ->
+ case lists:member(CP1, CPs) of
+ true ->
+ [GC|Str] = unicode_util:gc(Str0),
+ case lists:member(GC, GCs) of
+ false -> take_lc(Str, Seps, append(rev(GC),Acc));
+ true -> {rev(Acc), Str0}
+ end;
+ false ->
+ take_lc(Cont, Seps, append(CP1,Acc))
+ end;
+take_lc([Bin|Cont0], Seps0, Acc) when is_binary(Bin) ->
+ Seps = search_compile(Seps0),
+ case bin_search(Bin, Cont0, Seps) of
{nomatch, Cont} ->
Used = cp_prefix(Cont0, Cont),
- take_lc(Cont, Sep, [unicode:characters_to_binary([Bin|Used])|Acc]);
+ take_lc(Cont, Seps, [unicode:characters_to_binary([Bin|Used])|Acc]);
[Bin1|_]=After when is_binary(Bin1) ->
First = byte_size(Bin) - byte_size(Bin1),
<<Keep:First/binary, _/binary>> = Bin,
{btoken(Keep,Acc), After}
end;
-take_lc(Str, {GCs, _, _}=Sep, Acc) when is_list(Str) ->
+take_lc(Str, {GCs,_,_}=Seps, Acc) when is_list(Str) ->
case unicode_util:gc(Str) of
[C|Cs] ->
case lists:member(C, GCs) of
- false -> take_lc(Cs, Sep, append(rev(C),Acc));
+ false -> take_lc(Cs, Seps, append(rev(C),Acc));
true -> {rev(Acc), Str}
end;
[] -> {rev(Acc), []}
end;
-take_lc(Bin, Sep, Acc) when is_binary(Bin) ->
- case bin_search(Bin, [], Sep) of
+take_lc(Bin, Seps0, Acc) when is_binary(Bin) ->
+ Seps = search_compile(Seps0),
+ case bin_search(Bin, [], Seps) of
{nomatch,_} ->
{btoken(Bin, Acc), <<>>};
[After] ->
@@ -780,148 +914,192 @@ take_lc(Bin, Sep, Acc) when is_binary(Bin) ->
{btoken(Keep, Acc), After}
end.
-take_t([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+
+take_t([CP1|Cont]=Str0, _, {GCs,CPs,_}=Seps) when is_integer(CP1) ->
+ case lists:member(CP1, CPs) of
+ true ->
+ [GC|Str] = unicode_util:gc(Str0),
+ case lists:member(GC, GCs) of
+ true ->
+ {Head, Tail} = take_t(Str, 0, Seps),
+ case is_empty(Head) of
+ true -> {Head, append(GC,Tail)};
+ false -> {append(GC,Head), Tail}
+ end;
+ false ->
+ {Head, Tail} = take_t(Str, 0, Seps),
+ {append(GC,Head), Tail}
+ end;
+ false ->
+ {Head, Tail} = take_t(Cont, 0, Seps),
+ {[CP1|Head], Tail}
+ end;
+take_t([Bin|Cont0], N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
<<_:N/binary, Rest/binary>> = Bin,
- case bin_search(Rest, Cont0, Sep) of
+ Seps = search_compile(Seps0),
+ case bin_search(Rest, Cont0, Seps) of
{nomatch,Cont} ->
Used = cp_prefix(Cont0, Cont),
- {Head, Tail} = take_t(Cont, 0, Sep),
+ {Head, Tail} = take_t(Cont, 0, Seps),
{stack(unicode:characters_to_binary([Bin|Used]), Head), Tail};
[SepStart|Cont1] ->
- case bin_search_inv(SepStart, Cont1, Sep) of
+ case bin_search_inv(SepStart, Cont1, GCs) of
{nomatch, Cont} ->
- {Head, Tail} = take_t(Cont, 0, Sep),
+ {Head, Tail} = take_t(Cont, 0, Seps),
Used = cp_prefix(Cont0, Cont),
- case equal(Tail, Cont) of
+ case is_empty(Head) of
true ->
KeepSz = byte_size(Bin) - byte_size(SepStart),
<<Keep:KeepSz/binary, End/binary>> = Bin,
- {stack(Keep,Head), stack(stack(End,Used),Tail)};
+ {Keep, stack(stack(End,Used),Tail)};
false ->
{stack(unicode:characters_to_binary([Bin|Used]),Head), Tail}
end;
[NonSep|Cont] when is_binary(NonSep) ->
KeepSz = byte_size(Bin) - byte_size(NonSep),
- take_t([Bin|Cont], KeepSz, Sep)
+ take_t([Bin|Cont], KeepSz, Seps)
end
end;
-take_t(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
- case unicode_util:cp(Str) of
- [CP|Cs] ->
- case lists:member(CP, CPs) of
+take_t(Str, 0, {GCs,_,_}=Seps) when is_list(Str) ->
+ case unicode_util:gc(Str) of
+ [GC|Cs1] ->
+ case lists:member(GC, GCs) of
true ->
- [GC|Cs1] = unicode_util:gc(Str),
- case lists:member(GC, GCs) of
- true ->
- {Head, Tail} = take_t(Cs1, 0, Sep),
- case equal(Tail, Cs1) of
- true -> {Head, append(GC,Tail)};
- false -> {append(GC,Head), Tail}
- end;
- false ->
- {Head, Tail} = take_t(Cs, 0, Sep),
- {append(CP,Head), Tail}
+ {Head, Tail} = take_t(Cs1, 0, Seps),
+ case is_empty(Head) of
+ true -> {Head, append(GC,Tail)};
+ false -> {append(GC,Head), Tail}
end;
false ->
- {Head, Tail} = take_t(Cs, 0, Sep),
- {append(CP,Head), Tail}
+ {Head, Tail} = take_t(Cs1, 0, Seps),
+ {append(GC,Head), Tail}
end;
[] -> {[],[]}
end;
-take_t(Bin, N, Sep) when is_binary(Bin) ->
+take_t(Bin, N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
<<_:N/binary, Rest/binary>> = Bin,
- case bin_search(Rest, Sep) of
+ Seps = search_compile(Seps0),
+ case bin_search(Rest, [], Seps) of
{nomatch,_} -> {Bin, <<>>};
[SepStart] ->
- case bin_search_inv(SepStart, [], Sep) of
+ case bin_search_inv(SepStart, [], GCs) of
{nomatch,_} ->
KeepSz = byte_size(Bin) - byte_size(SepStart),
<<Before:KeepSz/binary, End/binary>> = Bin,
{Before, End};
[NonSep] ->
KeepSz = byte_size(Bin) - byte_size(NonSep),
- take_t(Bin, KeepSz, Sep)
+ take_t(Bin, KeepSz, Seps)
end
end.
-take_tc([Bin|Cont0], N, Sep) when is_binary(Bin) ->
+take_tc([CP1|[CP2|_]=Cont], _, {GCs,_,_}=Seps) when ?ASCII_LIST(CP1,CP2) ->
+ case lists:member(CP1, GCs) of
+ false ->
+ {Head, Tail} = take_tc(Cont, 0, Seps),
+ case is_empty(Head) of
+ true -> {Head, append(CP1,Tail)};
+ false -> {append(CP1,Head), Tail}
+ end;
+ true ->
+ {Head, Tail} = take_tc(Cont, 0, Seps),
+ {append(CP1,Head), Tail}
+ end;
+take_tc([Bin|Cont0], N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
<<_:N/binary, Rest/binary>> = Bin,
- case bin_search_inv(Rest, Cont0, Sep) of
+ case bin_search_inv(Rest, Cont0, GCs) of
{nomatch,Cont} ->
Used = cp_prefix(Cont0, Cont),
- {Head, Tail} = take_tc(Cont, 0, Sep),
+ {Head, Tail} = take_tc(Cont, 0, Seps0),
{stack(unicode:characters_to_binary([Bin|Used]), Head), Tail};
[SepStart|Cont1] ->
- case bin_search(SepStart, Cont1, Sep) of
+ Seps = search_compile(Seps0),
+ case bin_search(SepStart, Cont1, Seps) of
{nomatch, Cont} ->
- {Head, Tail} = take_tc(Cont, 0, Sep),
+ {Head, Tail} = take_tc(Cont, 0, Seps),
Used = cp_prefix(Cont0, Cont),
- case equal(Tail, Cont) of
+ case is_empty(Head) of
true ->
KeepSz = byte_size(Bin) - byte_size(SepStart),
<<Keep:KeepSz/binary, End/binary>> = Bin,
- {stack(Keep,Head), stack(stack(End,Used),Tail)};
+ {Keep, stack(stack(End,Used),Tail)};
false ->
{stack(unicode:characters_to_binary([Bin|Used]),Head), Tail}
end;
[NonSep|Cont] when is_binary(NonSep) ->
KeepSz = byte_size(Bin) - byte_size(NonSep),
- take_tc([Bin|Cont], KeepSz, Sep)
+ take_tc([Bin|Cont], KeepSz, Seps)
end
end;
-take_tc(Str, 0, {GCs,CPs,_}=Sep) when is_list(Str) ->
- case unicode_util:cp(Str) of
- [CP|Cs] ->
- case lists:member(CP, CPs) of
- true ->
- [GC|Cs1] = unicode_util:gc(Str),
- case lists:member(GC, GCs) of
- false ->
- {Head, Tail} = take_tc(Cs1, 0, Sep),
- case equal(Tail, Cs1) of
- true -> {Head, append(GC,Tail)};
- false -> {append(GC,Head), Tail}
- end;
- true ->
- {Head, Tail} = take_tc(Cs1, 0, Sep),
- {append(GC,Head), Tail}
- end;
+take_tc(Str, 0, {GCs,_,_}=Seps) when is_list(Str) ->
+ case unicode_util:gc(Str) of
+ [GC|Cs1] ->
+ case lists:member(GC, GCs) of
false ->
- {Head, Tail} = take_tc(Cs, 0, Sep),
- case equal(Tail, Cs) of
- true -> {Head, append(CP,Tail)};
- false -> {append(CP,Head), Tail}
- end
+ {Head, Tail} = take_tc(Cs1, 0, Seps),
+ case is_empty(Head) of
+ true -> {Head, append(GC,Tail)};
+ false -> {append(GC,Head), Tail}
+ end;
+ true ->
+ {Head, Tail} = take_tc(Cs1, 0, Seps),
+ {append(GC,Head), Tail}
end;
[] -> {[],[]}
end;
-take_tc(Bin, N, Sep) when is_binary(Bin) ->
+take_tc(Bin, N, {GCs,_,_}=Seps0) when is_binary(Bin) ->
<<_:N/binary, Rest/binary>> = Bin,
- case bin_search_inv(Rest, [], Sep) of
+ case bin_search_inv(Rest, [], GCs) of
{nomatch,_} -> {Bin, <<>>};
[SepStart] ->
- case bin_search(SepStart, [], Sep) of
+ Seps = search_compile(Seps0),
+ case bin_search(SepStart, [], Seps) of
{nomatch,_} ->
KeepSz = byte_size(Bin) - byte_size(SepStart),
<<Before:KeepSz/binary, End/binary>> = Bin,
{Before, End};
[NonSep] ->
KeepSz = byte_size(Bin) - byte_size(NonSep),
- take_tc(Bin, KeepSz, Sep)
+ take_tc(Bin, KeepSz, Seps)
end
end.
-prefix_1(Cs, []) -> Cs;
-prefix_1(Cs, [_]=Pre) ->
- prefix_2(unicode_util:gc(Cs), Pre);
-prefix_1(Cs, Pre) ->
- prefix_2(unicode_util:cp(Cs), Pre).
-
-prefix_2([C|Cs], [C|Pre]) ->
- prefix_1(Cs, Pre);
-prefix_2(_, _) ->
- nomatch.
+prefix_1(Cs0, [GC]) ->
+ case unicode_util:gc(Cs0) of
+ [GC|Cs] -> Cs;
+ _ -> nomatch
+ end;
+prefix_1([CP|Cs], [Pre|PreR]) when is_integer(CP) ->
+ case CP =:= Pre of
+ true -> prefix_1(Cs,PreR);
+ false -> nomatch
+ end;
+prefix_1(<<CP/utf8, Cs/binary>>, [Pre|PreR]) ->
+ case CP =:= Pre of
+ true -> prefix_1(Cs,PreR);
+ false -> nomatch
+ end;
+prefix_1(Cs0, [Pre|PreR]) ->
+ case unicode_util:cp(Cs0) of
+ [Pre|Cs] -> prefix_1(Cs,PreR);
+ _ -> nomatch
+ end.
+split_1([CP1|Cs]=Cs0, [C|_]=Needle, _, Where, Curr, Acc) when is_integer(CP1) ->
+ case CP1=:=C of
+ true ->
+ case prefix_1(Cs0, Needle) of
+ nomatch -> split_1(Cs, Needle, 0, Where, append(C,Curr), Acc);
+ Rest when Where =:= leading ->
+ [rev(Curr), Rest];
+ Rest when Where =:= trailing ->
+ split_1(Cs, Needle, 0, Where, [C|Curr], [rev(Curr), Rest]);
+ Rest when Where =:= all ->
+ split_1(Rest, Needle, 0, Where, [], [rev(Curr)|Acc])
+ end;
+ false ->
+ split_1(Cs, Needle, 0, Where, append(CP1,Curr), Acc)
+ end;
split_1([Bin|Cont0], Needle, Start, Where, Curr0, Acc)
when is_binary(Bin) ->
case bin_search_str(Bin, Start, Cont0, Needle) of
@@ -981,32 +1159,50 @@ split_1(Bin, [_C|_]=Needle, Start, Where, Curr0, Acc) ->
end
end.
-lexemes_m([Bin|Cont0], Seps, Ts) when is_binary(Bin) ->
- case bin_search_inv(Bin, Cont0, Seps) of
+lexemes_m([CP|_]=Cs0, {GCs,CPs,_}=Seps, Ts) when is_integer(CP) ->
+ case lists:member(CP, CPs) of
+ true ->
+ [GC|Cs2] = unicode_util:gc(Cs0),
+ case lists:member(GC, GCs) of
+ true ->
+ lexemes_m(Cs2, Seps, Ts);
+ false ->
+ {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
+ lexemes_m(Rest, Seps, [Lexeme|Ts])
+ end;
+ false ->
+ {Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
+ lexemes_m(Rest, Seps, [Lexeme|Ts])
+ end;
+lexemes_m([Bin|Cont0], {GCs,_,_}=Seps0, Ts) when is_binary(Bin) ->
+ case bin_search_inv(Bin, Cont0, GCs) of
{nomatch,Cont} ->
- lexemes_m(Cont, Seps, Ts);
+ lexemes_m(Cont, Seps0, Ts);
Cs ->
+ Seps = search_compile(Seps0),
{Lexeme,Rest} = lexeme_pick(Cs, Seps, []),
lexemes_m(Rest, Seps, [Lexeme|Ts])
end;
-lexemes_m(Cs0, {GCs, _, _}=Seps, Ts) when is_list(Cs0) ->
+lexemes_m(Cs0, {GCs, _, _}=Seps0, Ts) when is_list(Cs0) ->
case unicode_util:gc(Cs0) of
[C|Cs] ->
case lists:member(C, GCs) of
true ->
- lexemes_m(Cs, Seps, Ts);
+ lexemes_m(Cs, Seps0, Ts);
false ->
+ Seps = search_compile(Seps0),
{Lexeme,Rest} = lexeme_pick(Cs0, Seps, []),
lexemes_m(Rest, Seps, [Lexeme|Ts])
end;
[] ->
lists:reverse(Ts)
end;
-lexemes_m(Bin, Seps, Ts) when is_binary(Bin) ->
- case bin_search_inv(Bin, [], Seps) of
+lexemes_m(Bin, {GCs,_,_}=Seps0, Ts) when is_binary(Bin) ->
+ case bin_search_inv(Bin, [], GCs) of
{nomatch,_} ->
lists:reverse(Ts);
[Cs] ->
+ Seps = search_compile(Seps0),
{Lexeme,Rest} = lexeme_pick(Cs, Seps, []),
lexemes_m(Rest, Seps, add_non_empty(Lexeme,Ts))
end.
@@ -1037,7 +1233,7 @@ lexeme_pick(Cs0, {GCs, CPs, _} = Seps, Tkn) when is_list(Cs0) ->
true ->
[GC|Cs2] = unicode_util:gc(Cs0),
case lists:member(GC, GCs) of
- true -> {rev(Tkn), Cs0};
+ true -> {rev(Tkn), Cs2};
false -> lexeme_pick(Cs2, Seps, append(rev(GC),Tkn))
end;
false ->
@@ -1047,7 +1243,7 @@ lexeme_pick(Cs0, {GCs, CPs, _} = Seps, Tkn) when is_list(Cs0) ->
{rev(Tkn), []}
end;
lexeme_pick(Bin, Seps, Tkn) when is_binary(Bin) ->
- case bin_search(Bin, Seps) of
+ case bin_search(Bin, [], Seps) of
{nomatch,_} ->
{btoken(Bin,Tkn), []};
[Left] ->
@@ -1056,35 +1252,38 @@ lexeme_pick(Bin, Seps, Tkn) when is_binary(Bin) ->
{btoken(Lexeme, Tkn), Left}
end.
-nth_lexeme_m([Bin|Cont0], Seps, N) when is_binary(Bin) ->
- case bin_search_inv(Bin, Cont0, Seps) of
+nth_lexeme_m([Bin|Cont0], {GCs,_,_}=Seps0, N) when is_binary(Bin) ->
+ case bin_search_inv(Bin, Cont0, GCs) of
{nomatch,Cont} ->
- nth_lexeme_m(Cont, Seps, N);
+ nth_lexeme_m(Cont, Seps0, N);
Cs when N > 1 ->
- Rest = lexeme_skip(Cs, Seps),
- nth_lexeme_m(Rest, Seps, N-1);
+ Rest = lexeme_skip(Cs, Seps0),
+ nth_lexeme_m(Rest, Seps0, N-1);
Cs ->
+ Seps = search_compile(Seps0),
{Lexeme,_} = lexeme_pick(Cs, Seps, []),
Lexeme
end;
-nth_lexeme_m(Cs0, {GCs, _, _}=Seps, N) when is_list(Cs0) ->
+nth_lexeme_m(Cs0, {GCs, _, _}=Seps0, N) when is_list(Cs0) ->
case unicode_util:gc(Cs0) of
[C|Cs] ->
case lists:member(C, GCs) of
true ->
- nth_lexeme_m(Cs, Seps, N);
+ nth_lexeme_m(Cs, Seps0, N);
false when N > 1 ->
- Cs1 = lexeme_skip(Cs, Seps),
- nth_lexeme_m(Cs1, Seps, N-1);
+ Cs1 = lexeme_skip(Cs, Seps0),
+ nth_lexeme_m(Cs1, Seps0, N-1);
false ->
+ Seps = search_compile(Seps0),
{Lexeme,_} = lexeme_pick(Cs0, Seps, []),
Lexeme
end;
[] ->
[]
end;
-nth_lexeme_m(Bin, Seps, N) when is_binary(Bin) ->
- case bin_search_inv(Bin, [], Seps) of
+nth_lexeme_m(Bin, {GCs,_,_}=Seps0, N) when is_binary(Bin) ->
+ Seps = search_compile(Seps0),
+ case bin_search_inv(Bin, [], GCs) of
[Cs] when N > 1 ->
Cs1 = lexeme_skip(Cs, Seps),
nth_lexeme_m(Cs1, Seps, N-1);
@@ -1100,16 +1299,17 @@ lexeme_skip([CP|Cs1]=Cs0, {GCs,CPs,_}=Seps) when is_integer(CP) ->
true ->
[GC|Cs2] = unicode_util:gc(Cs0),
case lists:member(GC, GCs) of
- true -> Cs0;
+ true -> Cs2;
false -> lexeme_skip(Cs2, Seps)
end;
false ->
lexeme_skip(Cs1, Seps)
end;
-lexeme_skip([Bin|Cont0], Seps) when is_binary(Bin) ->
+lexeme_skip([Bin|Cont0], Seps0) when is_binary(Bin) ->
+ Seps = search_compile(Seps0),
case bin_search(Bin, Cont0, Seps) of
{nomatch,_} -> lexeme_skip(Cont0, Seps);
- Cs -> Cs
+ Cs -> tl(unicode_util:gc(Cs))
end;
lexeme_skip(Cs0, {GCs, CPs, _} = Seps) when is_list(Cs0) ->
case unicode_util:cp(Cs0) of
@@ -1118,7 +1318,7 @@ lexeme_skip(Cs0, {GCs, CPs, _} = Seps) when is_list(Cs0) ->
true ->
[GC|Cs2] = unicode_util:gc(Cs0),
case lists:member(GC, GCs) of
- true -> Cs0;
+ true -> Cs2;
false -> lexeme_skip(Cs2, Seps)
end;
false ->
@@ -1127,12 +1327,23 @@ lexeme_skip(Cs0, {GCs, CPs, _} = Seps) when is_list(Cs0) ->
[] ->
[]
end;
-lexeme_skip(Bin, Seps) when is_binary(Bin) ->
- case bin_search(Bin, Seps) of
+lexeme_skip(Bin, Seps0) when is_binary(Bin) ->
+ Seps = search_compile(Seps0),
+ case bin_search(Bin, [], Seps) of
{nomatch,_} -> <<>>;
- [Left] -> Left
+ [Left] -> tl(unicode_util:gc(Left))
end.
+find_l([C1|Cs]=Cs0, [C|_]=Needle) when is_integer(C1) ->
+ case C1 of
+ C ->
+ case prefix_1(Cs0, Needle) of
+ nomatch -> find_l(Cs, Needle);
+ _ -> Cs0
+ end;
+ _ ->
+ find_l(Cs, Needle)
+ end;
find_l([Bin|Cont0], Needle) when is_binary(Bin) ->
case bin_search_str(Bin, 0, Cont0, Needle) of
{nomatch, _, Cont} ->
@@ -1157,6 +1368,16 @@ find_l(Bin, Needle) ->
{_Before, [Cs], _After} -> Cs
end.
+find_r([Cp|Cs]=Cs0, [C|_]=Needle, Res) when is_integer(Cp) ->
+ case Cp of
+ C ->
+ case prefix_1(Cs0, Needle) of
+ nomatch -> find_r(Cs, Needle, Res);
+ _ -> find_r(Cs, Needle, Cs0)
+ end;
+ _ ->
+ find_r(Cs, Needle, Res)
+ end;
find_r([Bin|Cont0], Needle, Res) when is_binary(Bin) ->
case bin_search_str(Bin, 0, Cont0, Needle) of
{nomatch,_,Cont} ->
@@ -1227,11 +1448,6 @@ cp_prefix_1(Orig, Until, Cont) ->
%% Binary special
-bin_search(Bin, Seps) ->
- bin_search(Bin, [], Seps).
-
-bin_search(_Bin, Cont, {[],_,_}) ->
- {nomatch, Cont};
bin_search(Bin, Cont, {Seps,_,BP}) ->
bin_search_loop(Bin, 0, BP, Cont, Seps).
@@ -1239,10 +1455,14 @@ bin_search(Bin, Cont, {Seps,_,BP}) ->
%% i.e. å in nfd form $a "COMBINING RING ABOVE"
%% and PREPEND characters like "ARABIC NUMBER SIGN" 1536 <<216,128>>
%% combined with other characters are currently ignored.
+search_pattern({_,_,_}=P) -> P;
search_pattern(Seps) ->
CPs = search_cp(Seps),
- Bin = bin_pattern(CPs),
- {Seps, CPs, Bin}.
+ {Seps, CPs, undefined}.
+
+search_compile({Sep, CPs, undefined}) ->
+ {Sep, CPs, binary:compile_pattern(bin_pattern(CPs))};
+search_compile({_,_,_}=Compiled) -> Compiled.
search_cp([CP|Seps]) when is_integer(CP) ->
[CP|search_cp(Seps)];
@@ -1263,9 +1483,21 @@ bin_search_loop(Bin0, Start, BinSeps, Cont, Seps) ->
case binary:match(Bin, BinSeps) of
nomatch ->
{nomatch,Cont};
+ {Where, _CL} when Cont =:= [] ->
+ <<_:Where/binary, Cont1/binary>> = Bin,
+ [GC|Cont2] = unicode_util:gc(Cont1),
+ case lists:member(GC, Seps) of
+ false when Cont2 =:= [] ->
+ {nomatch, []};
+ false ->
+ Next = byte_size(Bin0) - byte_size(Cont2),
+ bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
+ true ->
+ [Cont1]
+ end;
{Where, _CL} ->
<<_:Where/binary, Cont0/binary>> = Bin,
- Cont1 = stack(Cont0, Cont),
+ Cont1 = [Cont0|Cont],
[GC|Cont2] = unicode_util:gc(Cont1),
case lists:member(GC, Seps) of
false ->
@@ -1273,55 +1505,108 @@ bin_search_loop(Bin0, Start, BinSeps, Cont, Seps) ->
[BinR|Cont] when is_binary(BinR) ->
Next = byte_size(Bin0) - byte_size(BinR),
bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
- BinR when is_binary(BinR), Cont =:= [] ->
- Next = byte_size(Bin0) - byte_size(BinR),
- bin_search_loop(Bin0, Next, BinSeps, Cont, Seps);
_ ->
{nomatch, Cont2}
end;
- true when is_list(Cont1) ->
- Cont1;
true ->
- [Cont1]
+ Cont1
end
end.
-bin_search_inv(Bin, Cont, {[], _, _}) ->
- [Bin|Cont];
-bin_search_inv(Bin, Cont, {[Sep], _, _}) ->
- bin_search_inv_1([Bin|Cont], Sep);
-bin_search_inv(Bin, Cont, {Seps, _, _}) ->
- bin_search_inv_n([Bin|Cont], Seps).
-
-bin_search_inv_1([<<>>|CPs], _) ->
- {nomatch, CPs};
-bin_search_inv_1(CPs = [Bin0|Cont], Sep) when is_binary(Bin0) ->
- case unicode_util:gc(CPs) of
- [Sep|Bin] when is_binary(Bin), Cont =:= [] ->
- bin_search_inv_1([Bin], Sep);
- [Sep|[Bin|Cont]=Cs] when is_binary(Bin) ->
- bin_search_inv_1(Cs, Sep);
- [Sep|Cs] ->
- {nomatch, Cs};
- _ -> CPs
- end.
+bin_search_inv(<<>>, Cont, _) ->
+ {nomatch, Cont};
+bin_search_inv(Bin, Cont, [Sep]) ->
+ bin_search_inv_1(Bin, Cont, Sep);
+bin_search_inv(Bin, Cont, Seps) ->
+ bin_search_inv_n(Bin, Cont, Seps).
+
+bin_search_inv_1(<<CP1/utf8, BinRest/binary>>=Bin0, Cont, Sep) ->
+ case BinRest of
+ <<CP2/utf8, _/binary>> when ?ASCII_LIST(CP1, CP2) ->
+ case CP1 of
+ Sep -> bin_search_inv_1(BinRest, Cont, Sep);
+ _ -> [Bin0|Cont]
+ end;
+ _ when Cont =:= [] ->
+ case unicode_util:gc(Bin0) of
+ [Sep|Bin] -> bin_search_inv_1(Bin, Cont, Sep);
+ _ -> [Bin0|Cont]
+ end;
+ _ ->
+ case unicode_util:gc([Bin0|Cont]) of
+ [Sep|[Bin|Cont]] when is_binary(Bin) ->
+ bin_search_inv_1(Bin, Cont, Sep);
+ [Sep|Cs] ->
+ {nomatch, Cs};
+ _ -> [Bin0|Cont]
+ end
+ end;
+bin_search_inv_1(<<>>, Cont, _Sep) ->
+ {nomatch, Cont};
+bin_search_inv_1([], Cont, _Sep) ->
+ {nomatch, Cont}.
-bin_search_inv_n([<<>>|CPs], _) ->
- {nomatch, CPs};
-bin_search_inv_n([Bin0|Cont]=CPs, Seps) when is_binary(Bin0) ->
- [C|Cs0] = unicode_util:gc(CPs),
- case {lists:member(C, Seps), Cs0} of
- {true, Cs} when is_binary(Cs), Cont =:= [] ->
- bin_search_inv_n([Cs], Seps);
- {true, [Bin|Cont]=Cs} when is_binary(Bin) ->
- bin_search_inv_n(Cs, Seps);
- {true, Cs} -> {nomatch, Cs};
- {false, _} -> CPs
- end.
+bin_search_inv_n(<<CP1/utf8, BinRest/binary>>=Bin0, Cont, Seps) ->
+ case BinRest of
+ <<CP2/utf8, _/binary>> when ?ASCII_LIST(CP1, CP2) ->
+ case lists:member(CP1,Seps) of
+ true -> bin_search_inv_n(BinRest, Cont, Seps);
+ false -> [Bin0|Cont]
+ end;
+ _ when Cont =:= [] ->
+ [GC|Bin] = unicode_util:gc(Bin0),
+ case lists:member(GC, Seps) of
+ true -> bin_search_inv_n(Bin, Cont, Seps);
+ false -> [Bin0|Cont]
+ end;
+ _ ->
+ [GC|Cs0] = unicode_util:gc([Bin0|Cont]),
+ case lists:member(GC, Seps) of
+ false -> [Bin0|Cont];
+ true ->
+ case Cs0 of
+ [Bin|Cont] when is_binary(Bin) ->
+ bin_search_inv_n(Bin, Cont, Seps);
+ _ ->
+ {nomatch, Cs0}
+ end
+ end
+ end;
+bin_search_inv_n(<<>>, Cont, _Sep) ->
+ {nomatch, Cont};
+bin_search_inv_n([], Cont, _Sep) ->
+ {nomatch, Cont}.
+
+bin_search_str(Bin0, Start, [], SearchCPs) ->
+ Compiled = binary:compile_pattern(unicode:characters_to_binary(SearchCPs)),
+ bin_search_str_1(Bin0, Start, Compiled, SearchCPs);
bin_search_str(Bin0, Start, Cont, [CP|_]=SearchCPs) ->
+ First = binary:compile_pattern(<<CP/utf8>>),
+ bin_search_str_2(Bin0, Start, Cont, First, SearchCPs).
+
+bin_search_str_1(Bin0, Start, First, SearchCPs) ->
+ <<_:Start/binary, Bin/binary>> = Bin0,
+ case binary:match(Bin, First) of
+ nomatch -> {nomatch, byte_size(Bin0), []};
+ {Where0, _} ->
+ Where = Start+Where0,
+ <<Keep:Where/binary, Cs0/binary>> = Bin0,
+ case prefix_1(Cs0, SearchCPs) of
+ nomatch ->
+ <<_/utf8, Cs/binary>> = Cs0,
+ KeepSz = byte_size(Bin0) - byte_size(Cs),
+ bin_search_str_1(Bin0, KeepSz, First, SearchCPs);
+ [] ->
+ {Keep, [Cs0], <<>>};
+ Rest ->
+ {Keep, [Cs0], Rest}
+ end
+ end.
+
+bin_search_str_2(Bin0, Start, Cont, First, SearchCPs) ->
<<_:Start/binary, Bin/binary>> = Bin0,
- case binary:match(Bin, <<CP/utf8>>) of
+ case binary:match(Bin, First) of
nomatch -> {nomatch, byte_size(Bin0), Cont};
{Where0, _} ->
Where = Start+Where0,
@@ -1330,7 +1615,7 @@ bin_search_str(Bin0, Start, Cont, [CP|_]=SearchCPs) ->
case prefix_1(stack(Cs0,Cont), SearchCPs) of
nomatch when is_binary(Cs) ->
KeepSz = byte_size(Bin0) - byte_size(Cs),
- bin_search_str(Bin0, KeepSz, Cont, SearchCPs);
+ bin_search_str_2(Bin0, KeepSz, Cont, First, SearchCPs);
nomatch ->
{nomatch, Where, stack([GC|Cs],Cont)};
[] ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 02:14:56 +0000