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author | Björn Gustavsson <[email protected]> | 2013-01-22 17:25:09 +0100 |
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committer | Björn Gustavsson <[email protected]> | 2013-01-23 15:22:56 +0100 |
commit | f16f43446a04c459486356c0b4ad517cc9201895 (patch) | |
tree | 62f35292fab66f098f1b288418429a4c17010eef /lib/asn1/src/asn1rtt_per.erl | |
parent | dc17110cd88153a74900d71d35df608f5d58c0f3 (diff) | |
download | otp-f16f43446a04c459486356c0b4ad517cc9201895.tar.gz otp-f16f43446a04c459486356c0b4ad517cc9201895.tar.bz2 otp-f16f43446a04c459486356c0b4ad517cc9201895.zip |
per,uper: Optimize decoding of the remaining data types
Diffstat (limited to 'lib/asn1/src/asn1rtt_per.erl')
-rw-r--r-- | lib/asn1/src/asn1rtt_per.erl | 47 |
1 files changed, 2 insertions, 45 deletions
diff --git a/lib/asn1/src/asn1rtt_per.erl b/lib/asn1/src/asn1rtt_per.erl index 2bcf459330..7194e8d127 100644 --- a/lib/asn1/src/asn1rtt_per.erl +++ b/lib/asn1/src/asn1rtt_per.erl @@ -26,8 +26,8 @@ encode_length/1, encode_length/2, encode_bit_string/3, - encode_object_identifier/1, decode_object_identifier/1, - encode_relative_oid/1, decode_relative_oid/1, + encode_object_identifier/1, + encode_relative_oid/1, complete/1, encode_open_type/1, encode_GeneralString/2, @@ -134,12 +134,6 @@ getoctets_as_bin(Bin,Num) when is_bitstring(Bin) -> <<_:AlignBits,Val:Num/binary,RestBin/binary>> = Bin, {Val,RestBin}. - -%% same as above but returns octets as a List -getoctets_as_list(Buffer,Num) -> - {Bin,Buffer2} = getoctets_as_bin(Buffer,Num), - {binary_to_list(Bin),Buffer2}. - %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% set_choice(Alt,Choices,Altnum) -> ListofBitSettings %% Alt = atom() @@ -977,33 +971,6 @@ e_o_e(Num) when Num < 128 -> e_o_e(Num) -> [e_o_e(Num bsr 7)|[(Num band 2#1111111) bor 2#10000000]]. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_object_identifier(Bytes) -> {ObjId,RemainingBytes} -%% ObjId -> {integer(),integer(),...} % at least 2 integers -%% RemainingBytes -> [integer()] when integer() (0..255) -decode_object_identifier(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {Octs,Bytes3} = getoctets_as_list(Bytes2,Len), - [First|Rest] = dec_subidentifiers(Octs,0,[]), - Idlist = if - First < 40 -> - [0,First|Rest]; - First < 80 -> - [1,First - 40|Rest]; - true -> - [2,First - 80|Rest] - end, - {list_to_tuple(Idlist),Bytes3}. - -dec_subidentifiers([H|T],Av,Al) when H >=16#80 -> - dec_subidentifiers(T,(Av bsl 7) + (H band 16#7F),Al); -dec_subidentifiers([H|T],Av,Al) -> - dec_subidentifiers(T,0,[(Av bsl 7) + H |Al]); -dec_subidentifiers([],_Av,Al) -> - lists:reverse(Al). - %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% encode_relative_oid(Val) -> CompleteList %% encode_relative_oid({Name,Val}) -> CompleteList @@ -1014,16 +981,6 @@ encode_relative_oid(Val) when is_list(Val) -> Sz = byte_size(Octets), [encode_length(Sz)|octets_to_complete(Sz, Octets)]. -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% decode_relative_oid(Val) -> CompleteList -%% decode_relative_oid({Name,Val}) -> CompleteList -decode_relative_oid(Bytes) -> - {Len,Bytes2} = decode_length(Bytes,undefined), - {Octs,Bytes3} = getoctets_as_list(Bytes2,Len), - ObjVals = dec_subidentifiers(Octs,0,[]), - {list_to_tuple(ObjVals),Bytes3}. - - %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% complete(InList) -> ByteList %% Takes a coded list with bits and bytes and converts it to a list of bytes |