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converted jsx_test to etap, fixed resulting bugs with autodetection

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This commit is contained in:
alisdair sullivan 2010-06-01 23:33:56 -07:00
parent b82d4c5337
commit ef952ceee8
6 changed files with 78 additions and 43 deletions
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46
src/jsx.erl
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@ -99,9 +99,6 @@ detect_encoding(<<16#ff, 16#fe, Rest/binary>>, Stack, Callbacks, Opts) ->
detect_encoding(<<0, 0, 16#fe, 16#ff, Rest/binary>>, Stack, Callbacks, Opts) ->
jsx_utf32:start(Rest, Stack, Callbacks, Opts);
%% utf8 null order detection
detect_encoding(<<X, Y, _Rest/binary>> = JSON, Stack, Callbacks, Opts) when X =/= 0, Y =/= 0 ->
jsx_utf8:start(JSON, Stack, Callbacks, Opts);
%% utf32-little null order detection
detect_encoding(<<X, 0, 0, 0, _Rest/binary>> = JSON, Stack, Callbacks, Opts) when X =/= 0 ->
@ -119,17 +116,38 @@ detect_encoding(<<X, 0, Y, 0, _Rest/binary>> = JSON, Stack, Callbacks, Opts) whe
detect_encoding(<<0, 0, 0, X, _Rest/binary>> = JSON, Stack, Callbacks, Opts) when X =/= 0 ->
jsx_utf32:start(JSON, Stack, Callbacks, Opts);
%% trying to parse a json string of a single character encoded in utf8 will fail
%% unless special cased
detect_encoding(<<X>> = JSON, Stack, Callbacks, Opts) when X =/= 0 ->
try jsx_utf8:start(JSON, Stack, Callbacks, Opts)
catch error:function_clause ->
{incomplete,
fun(Stream) ->
detect_encoding(<<X, Stream/binary>>, Stack, Callbacks, Opts)
end
}
end;
%% utf8 null order detection
detect_encoding(<<X, Y, _Rest/binary>> = JSON, Stack, Callbacks, Opts) when X =/= 0, Y =/= 0 ->
jsx_utf8:start(JSON, Stack, Callbacks, Opts);
%% a problem, to autodetect naked single digits' encoding, there is not enough data
%% to conclusively determine the encoding correctly. below is an attempt to solve
%% the problem
detect_encoding(<<X>>, Stack, Callbacks, Opts) when X =/= 0 ->
{
try {Result, _} = jsx_utf8:start(<<X>>, [], Callbacks, Opts), Result
catch error:function_clause -> incomplete end,
fun(Stream) ->
detect_encoding(<<X, Stream/binary>>, Stack, Callbacks, Opts)
end
};
detect_encoding(<<0, X>>, Stack, Callbacks, Opts) when X =/= 0 ->
{
try {Result, _} = jsx_utf16:start(<<0, X>>, [], Callbacks, Opts), Result
catch error:function_clause -> incomplete end,
fun(Stream) ->
detect_encoding(<<0, X, Stream/binary>>, Stack, Callbacks, Opts)
end
};
detect_encoding(<<X, 0>>, Stack, Callbacks, Opts) when X =/= 0 ->
{
try {Result, _} = jsx_utf16le:start(<<X, 0>>, [], Callbacks, Opts), Result
catch error:function_clause -> incomplete end,
fun(Stream) ->
detect_encoding(<<X, 0, Stream/binary>>, Stack, Callbacks, Opts)
end
};
%% not enough input, request more
detect_encoding(Bin, Stack, Callbacks, Opts) ->