diff options
Diffstat (limited to 'lib/stdlib/src/eval_bits.erl')
| -rw-r--r-- | lib/stdlib/src/eval_bits.erl | 64 |
1 files changed, 57 insertions, 7 deletions
diff --git a/lib/stdlib/src/eval_bits.erl b/lib/stdlib/src/eval_bits.erl index f40904df1c..e49cbc1fd1 100644 --- a/lib/stdlib/src/eval_bits.erl +++ b/lib/stdlib/src/eval_bits.erl @@ -2,7 +2,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1999-2011. All Rights Reserved. +%% Copyright Ericsson AB 1999-2013. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -67,7 +67,8 @@ expr_grp([], Bs0, _Lf, Acc) -> {value,Acc,Bs0}. eval_field({bin_element, _, {string, _, S}, default, default}, Bs0, _Fun) -> - {list_to_binary(S),Bs0}; + Latin1 = [C band 16#FF || C <- S], + {list_to_binary(Latin1),Bs0}; eval_field({bin_element, Line, {string, _, S}, Size0, Options0}, Bs, _Fun) -> {_Size,[Type,_Unit,_Sign,Endian]} = make_bit_type(Line, Size0, Options0), @@ -162,8 +163,10 @@ bin_gen([], Bin, _Bs0, _BBs0, _Mfun, _Efun, false) -> bin_gen_field({bin_element,_,{string,_,S},default,default}, Bin, Bs, BBs, _Mfun, _Efun) -> - Bits = list_to_binary(S), - Size = byte_size(Bits), + Bits = try list_to_binary(S) + catch _:_ -> <<>> + end, + Size = length(S), case Bin of <<Bits:Size/binary,Rest/bitstring>> -> {match,Bs,BBs,Rest}; @@ -172,16 +175,42 @@ bin_gen_field({bin_element,_,{string,_,S},default,default}, _ -> done end; +bin_gen_field({bin_element,Line,{string,SLine,S},Size0,Options0}, + Bin0, Bs0, BBs0, Mfun, Efun) -> + {Size1, [Type,{unit,Unit},Sign,Endian]} = + make_bit_type(Line, Size0, Options0), + match_check_size(Mfun, Size1, BBs0), + {value, Size, _BBs} = Efun(Size1, BBs0), + F = fun(C, Bin, Bs, BBs) -> + bin_gen_field1(Bin, Type, Size, Unit, Sign, Endian, + {integer,SLine,C}, Bs, BBs, Mfun) + end, + bin_gen_field_string(S, Bin0, Bs0, BBs0, F); bin_gen_field({bin_element,Line,VE,Size0,Options0}, Bin, Bs0, BBs0, Mfun, Efun) -> {Size1, [Type,{unit,Unit},Sign,Endian]} = make_bit_type(Line, Size0, Options0), V = erl_eval:partial_eval(VE), + NewV = coerce_to_float(V, Type), match_check_size(Mfun, Size1, BBs0), {value, Size, _BBs} = Efun(Size1, BBs0), + bin_gen_field1(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun). + +bin_gen_field_string([], Rest, Bs, BBs, _F) -> + {match,Bs,BBs,Rest}; +bin_gen_field_string([C|Cs], Bin0, Bs0, BBs0, Fun) -> + case Fun(C, Bin0, Bs0, BBs0) of + {match,Bs,BBs,Rest} -> + bin_gen_field_string(Cs, Rest, Bs, BBs, Fun); + {nomatch,Rest} -> + {nomatch,Rest}; + done -> + done + end. + +bin_gen_field1(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun) -> case catch get_value(Bin, Type, Size, Unit, Sign, Endian) of {Val,<<_/bitstring>>=Rest} -> - NewV = coerce_to_float(V, Type), case catch Mfun(match, {NewV,Val,Bs0}) of {match,Bs} -> BBs = add_bin_binding(Mfun, NewV, Bs, BBs0), @@ -223,20 +252,41 @@ match_bits_1([F|Fs], Bits0, Bs0, BBs0, Mfun, Efun) -> match_field_1({bin_element,_,{string,_,S},default,default}, Bin, Bs, BBs, _Mfun, _Efun) -> - Bits = list_to_binary(S), + Bits = list_to_binary(S), % fails if there are characters > 255 Size = byte_size(Bits), <<Bits:Size/binary,Rest/binary-unit:1>> = Bin, {Bs,BBs,Rest}; +match_field_1({bin_element,Line,{string,SLine,S},Size0,Options0}, + Bin0, Bs0, BBs0, Mfun, Efun) -> + {Size1, [Type,{unit,Unit},Sign,Endian]} = + make_bit_type(Line, Size0, Options0), + Size2 = erl_eval:partial_eval(Size1), + match_check_size(Mfun, Size2, BBs0), + {value, Size, _BBs} = Efun(Size2, BBs0), + F = fun(C, Bin, Bs, BBs) -> + match_field(Bin, Type, Size, Unit, Sign, Endian, + {integer,SLine,C}, Bs, BBs, Mfun) + end, + match_field_string(S, Bin0, Bs0, BBs0, F); match_field_1({bin_element,Line,VE,Size0,Options0}, Bin, Bs0, BBs0, Mfun, Efun) -> {Size1, [Type,{unit,Unit},Sign,Endian]} = make_bit_type(Line, Size0, Options0), V = erl_eval:partial_eval(VE), + NewV = coerce_to_float(V, Type), Size2 = erl_eval:partial_eval(Size1), match_check_size(Mfun, Size2, BBs0), {value, Size, _BBs} = Efun(Size2, BBs0), + match_field(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun). + +match_field_string([], Rest, Bs, BBs, _Fun) -> + {Bs,BBs,Rest}; +match_field_string([C|Cs], Bin0, Bs0, BBs0, Fun) -> + {Bs,BBs,Bin} = Fun(C, Bin0, Bs0, BBs0), + match_field_string(Cs, Bin, Bs, BBs, Fun). + +match_field(Bin, Type, Size, Unit, Sign, Endian, NewV, Bs0, BBs0, Mfun) -> {Val,Rest} = get_value(Bin, Type, Size, Unit, Sign, Endian), - NewV = coerce_to_float(V, Type), {match,Bs} = Mfun(match, {NewV,Val,Bs0}), BBs = add_bin_binding(Mfun, NewV, Bs, BBs0), {Bs,BBs,Rest}. |