diff options
Diffstat (limited to 'lib/xmerl/src/xmerl_b64Bin_scan.erl')
-rw-r--r-- | lib/xmerl/src/xmerl_b64Bin_scan.erl | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/lib/xmerl/src/xmerl_b64Bin_scan.erl b/lib/xmerl/src/xmerl_b64Bin_scan.erl new file mode 100644 index 0000000000..6f40680547 --- /dev/null +++ b/lib/xmerl/src/xmerl_b64Bin_scan.erl @@ -0,0 +1,59 @@ +%% +%% %CopyrightBegin% +%% +%% Copyright Ericsson AB 2006-2009. 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 +%% compliance with the License. You should have received a copy of the +%% Erlang Public License along with this software. If not, it can be +%% retrieved online at http://www.erlang.org/. +%% +%% Software distributed under the License is distributed on an "AS IS" +%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See +%% the License for the specific language governing rights and limitations +%% under the License. +%% +%% %CopyrightEnd% +%% + +-module(xmerl_b64Bin_scan). + +-export([scan/1]). + +-define(L, 1). + +scan(Str) -> + scan(Str,[]). + +scan([],Acc) -> + lists:reverse([{'$end', ?L, '$end'}|Acc]); +scan(Str,Acc) -> + case scan_token(Str) of + {Token,Rest} -> + scan(Rest,[Token|Acc]) + end. + +scan_token([$ ,H|T]) -> + scan_token([H|T]); +scan_token([H|T]) when H==$A;H==$Q;H==$g;H==$w -> + {{b04,?L,H},T}; +scan_token([H|T]) + when H==$E;H==$I;H==$M;H==$U;H==$Y;H==$c;H==$k;H==$o;H==$s;H==$0; + H==$4;H==$8 -> + {{b16x,?L,H},T}; +scan_token([H|T]) + when H==$B;H==$C;H==$D;H==$F;H==$G;H==$H;H==$J;H==$K;H==$L;H==$N; + H==$O;H==$P;H==$R;H==$S;H==$T;H==$V;H==$W;H==$X;H==$Z -> + {{b64x,?L,H},T}; +scan_token([H|T]) + when H==$a;H==$b;H==$d;H==$e;H==$f;H==$h;H==$i;H==$j;H==$l;H==$m;H==$n;H==$p; + H==$q;H==$r;H==$t;H==$u;H==$v;H==$x;H==$y;H==$z -> + {{b64x,?L,H},T}; +scan_token([H|T]) + when H==$1;H==$2;H==$3;H==$5;H==$6;H==$7;H==$9;H==$+;H==$/ -> + {{b64x,?L,H},T}; +scan_token("="++T) -> + {{'=',?L,"="},T}; +scan_token([H|_T]) -> + exit({error,{base64Binary_scan_illegal_char,H}}). |