%% Copyright (c) 2013, Loïc Hoguin %% %% Permission to use, copy, modify, and/or distribute this software for any %% purpose with or without fee is hereby granted, provided that the above %% copyright notice and this permission notice appear in all copies. %% %% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES %% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF %% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR %% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES %% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN %% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF %% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -module(cow_qs). -export([parse_qs/1]). -export([qs/1]). -export([urldecode/1]). -export([urlencode/1]). -type qs_vals() :: [{binary(), binary() | true}]. %% @doc Parse an application/x-www-form-urlencoded string. %% %% The percent decoding is inlined to greatly improve the performance %% by avoiding copying binaries twice (once for extracting, once for %% decoding) instead of just extracting the proper representation. -spec parse_qs(binary()) -> qs_vals(). parse_qs(B) -> parse_qs_name(B, [], <<>>). parse_qs_name(<< $%, H, L, Rest/bits >>, Acc, Name) -> C = (unhex(H) bsl 4 bor unhex(L)), parse_qs_name(Rest, Acc, << Name/bits, C >>); parse_qs_name(<< $+, Rest/bits >>, Acc, Name) -> parse_qs_name(Rest, Acc, << Name/bits, " " >>); parse_qs_name(<< $=, Rest/bits >>, Acc, Name) when Name =/= <<>> -> parse_qs_value(Rest, Acc, Name, <<>>); parse_qs_name(<< $&, Rest/bits >>, Acc, Name) -> case Name of <<>> -> parse_qs_name(Rest, Acc, <<>>); _ -> parse_qs_name(Rest, [{Name, true}|Acc], <<>>) end; parse_qs_name(<< C, Rest/bits >>, Acc, Name) when C =/= $%, C =/= $= -> parse_qs_name(Rest, Acc, << Name/bits, C >>); parse_qs_name(<<>>, Acc, Name) -> case Name of <<>> -> lists:reverse(Acc); _ -> lists:reverse([{Name, true}|Acc]) end. parse_qs_value(<< $%, H, L, Rest/bits >>, Acc, Name, Value) -> C = (unhex(H) bsl 4 bor unhex(L)), parse_qs_value(Rest, Acc, Name, << Value/bits, C >>); parse_qs_value(<< $+, Rest/bits >>, Acc, Name, Value) -> parse_qs_value(Rest, Acc, Name, << Value/bits, " " >>); parse_qs_value(<< $&, Rest/bits >>, Acc, Name, Value) -> parse_qs_name(Rest, [{Name, Value}|Acc], <<>>); parse_qs_value(<< C, Rest/bits >>, Acc, Name, Value) when C =/= $% -> parse_qs_value(Rest, Acc, Name, << Value/bits, C >>); parse_qs_value(<<>>, Acc, Name, Value) -> lists:reverse([{Name, Value}|Acc]). -ifdef(TEST). parse_qs_test_() -> Tests = [ {<<>>, []}, {<<"&">>, []}, {<<"a">>, [{<<"a">>, true}]}, {<<"a&">>, [{<<"a">>, true}]}, {<<"&a">>, [{<<"a">>, true}]}, {<<"a&b">>, [{<<"a">>, true}, {<<"b">>, true}]}, {<<"a&&b">>, [{<<"a">>, true}, {<<"b">>, true}]}, {<<"a&b&">>, [{<<"a">>, true}, {<<"b">>, true}]}, {<<"=">>, error}, {<<"=b">>, error}, {<<"a=">>, [{<<"a">>, <<>>}]}, {<<"a=b">>, [{<<"a">>, <<"b">>}]}, {<<"a=&b=">>, [{<<"a">>, <<>>}, {<<"b">>, <<>>}]}, {<<"a=b&c&d=e">>, [{<<"a">>, <<"b">>}, {<<"c">>, true}, {<<"d">>, <<"e">>}]}, {<<"a=b=c&d=e=f&g=h=i">>, [{<<"a">>, <<"b=c">>}, {<<"d">>, <<"e=f">>}, {<<"g">>, <<"h=i">>}]}, {<<"+">>, [{<<" ">>, true}]}, {<<"+=+">>, [{<<" ">>, <<" ">>}]}, {<<"a+b=c+d">>, [{<<"a b">>, <<"c d">>}]}, {<<"+a+=+b+&+c+=+d+">>, [{<<" a ">>, <<" b ">>}, {<<" c ">>, <<" d ">>}]}, {<<"a%20b=c%20d">>, [{<<"a b">>, <<"c d">>}]}, {<<"%25%26%3D=%25%26%3D&_-.=.-_">>, [{<<"%&=">>, <<"%&=">>}, {<<"_-.">>, <<".-_">>}]}, {<<"for=extend%2Franch">>, [{<<"for">>, <<"extend/ranch">>}]} ], [{Qs, fun() -> E = try parse_qs(Qs) of R -> R catch _:_ -> error end end} || {Qs, E} <- Tests]. parse_qs_identity_test_() -> Tests = [ <<"+">>, <<"hl=en&q=erlang+cowboy">>, <<"direction=desc&for=extend%2Franch&sort=updated&state=open">>, <<"i=EWiIXmPj5gl6&v=QowBp0oDLQXdd4x_GwiywA&ip=98.20.31.81&" "la=en&pg=New8.undertonebrandsafe.com%2F698a2525065ee2" "60c0b2f2aaad89ab82&re=&sz=1&fc=1&fr=140&br=3&bv=11.0." "696.16&os=3&ov=&rs=vpl&k=cookies%7Csale%7Cbrowser%7Cm" "ore%7Cprivacy%7Cstatistics%7Cactivities%7Cauction%7Ce" "mail%7Cfree%7Cin...&t=112373&xt=5%7C61%7C0&tz=-1&ev=x" "&tk=&za=1&ortb-za=1&zu=&zl=&ax=U&ay=U&ortb-pid=536454" ".55&ortb-sid=112373.8&seats=999&ortb-xt=IAB24&ortb-ugc=">>, <<"i=9pQNskA&v=0ySQQd1F&ev=12345678&t=12345&sz=3&ip=67.58." "236.89&la=en&pg=http%3A%2F%2Fwww.yahoo.com%2Fpage1.ht" "m&re=http%3A%2F%2Fsearch.google.com&fc=1&fr=1&br=2&bv" "=3.0.14&os=1&ov=XP&k=cars%2Cford&rs=js&xt=5%7C22%7C23" "4&tz=%2B180&tk=key1%3Dvalue1%7Ckey2%3Dvalue2&zl=4%2C5" "%2C6&za=4&zu=competitor.com&ua=Mozilla%2F5.0+%28Windo" "ws%3B+U%3B+Windows+NT+6.1%3B+en-US%29+AppleWebKit%2F5" "34.13+%28KHTML%2C+like+Gecko%29+Chrome%2F9.0.597.98+S" "afari%2F534.13&ortb-za=1%2C6%2C13&ortb-pid=521732&ort" "b-sid=521732&ortb-xt=IAB3&ortb-ugc=">> ], [{V, fun() -> V = qs(parse_qs(V)) end} || V <- Tests]. -endif. -ifdef(PERF). horse_parse_qs_shorter() -> horse:repeat(20000, parse_qs(<<"hl=en&q=erlang%20cowboy">>) ). horse_parse_qs_short() -> horse:repeat(20000, parse_qs( <<"direction=desc&for=extend%2Franch&sort=updated&state=open">>) ). horse_parse_qs_long() -> horse:repeat(20000, parse_qs(<<"i=EWiIXmPj5gl6&v=QowBp0oDLQXdd4x_GwiywA&ip=98.20.31.81&" "la=en&pg=New8.undertonebrandsafe.com%2F698a2525065ee260c0b2f2a" "aad89ab82&re=&sz=1&fc=1&fr=140&br=3&bv=11.0.696.16&os=3&ov=&rs" "=vpl&k=cookies%7Csale%7Cbrowser%7Cmore%7Cprivacy%7Cstatistics%" "7Cactivities%7Cauction%7Cemail%7Cfree%7Cin...&t=112373&xt=5%7C" "61%7C0&tz=-1&ev=x&tk=&za=1&ortb-za=1&zu=&zl=&ax=U&ay=U&ortb-pi" "d=536454.55&ortb-sid=112373.8&seats=999&ortb-xt=IAB24&ortb-ugc" "=">>) ). horse_parse_qs_longer() -> horse:repeat(20000, parse_qs(<<"i=9pQNskA&v=0ySQQd1F&ev=12345678&t=12345&sz=3&ip=67.58." "236.89&la=en&pg=http%3A%2F%2Fwww.yahoo.com%2Fpage1.htm&re=http" "%3A%2F%2Fsearch.google.com&fc=1&fr=1&br=2&bv=3.0.14&os=1&ov=XP" "&k=cars%2cford&rs=js&xt=5%7c22%7c234&tz=%2b180&tk=key1%3Dvalue" "1%7Ckey2%3Dvalue2&zl=4,5,6&za=4&zu=competitor.com&ua=Mozilla%2" "F5.0%20(Windows%3B%20U%3B%20Windows%20NT%206.1%3B%20en-US)%20A" "ppleWebKit%2F534.13%20(KHTML%2C%20like%20Gecko)%20Chrome%2F9.0" ".597.98%20Safari%2F534.13&ortb-za=1%2C6%2C13&ortb-pid=521732&o" "rtb-sid=521732&ortb-xt=IAB3&ortb-ugc=">>) ). -endif. %% @doc Build an application/x-www-form-urlencoded string. -spec qs(qs_vals()) -> binary(). qs([]) -> <<>>; qs(L) -> qs(L, <<>>). qs([], Acc) -> << $&, Qs/bits >> = Acc, Qs; qs([{Name, true}|Tail], Acc) -> Acc2 = urlencode(Name, << Acc/bits, $& >>), qs(Tail, Acc2); qs([{Name, Value}|Tail], Acc) -> Acc2 = urlencode(Name, << Acc/bits, $& >>), Acc3 = urlencode(Value, << Acc2/bits, $= >>), qs(Tail, Acc3). -define(QS_SHORTER, [ {<<"hl">>, <<"en">>}, {<<"q">>, <<"erlang cowboy">>} ]). -define(QS_SHORT, [ {<<"direction">>, <<"desc">>}, {<<"for">>, <<"extend/ranch">>}, {<<"sort">>, <<"updated">>}, {<<"state">>, <<"open">>} ]). -define(QS_LONG, [ {<<"i">>, <<"EWiIXmPj5gl6">>}, {<<"v">>, <<"QowBp0oDLQXdd4x_GwiywA">>}, {<<"ip">>, <<"98.20.31.81">>}, {<<"la">>, <<"en">>}, {<<"pg">>, <<"New8.undertonebrandsafe.com/" "698a2525065ee260c0b2f2aaad89ab82">>}, {<<"re">>, <<>>}, {<<"sz">>, <<"1">>}, {<<"fc">>, <<"1">>}, {<<"fr">>, <<"140">>}, {<<"br">>, <<"3">>}, {<<"bv">>, <<"11.0.696.16">>}, {<<"os">>, <<"3">>}, {<<"ov">>, <<>>}, {<<"rs">>, <<"vpl">>}, {<<"k">>, <<"cookies|sale|browser|more|privacy|statistics|" "activities|auction|email|free|in...">>}, {<<"t">>, <<"112373">>}, {<<"xt">>, <<"5|61|0">>}, {<<"tz">>, <<"-1">>}, {<<"ev">>, <<"x">>}, {<<"tk">>, <<>>}, {<<"za">>, <<"1">>}, {<<"ortb-za">>, <<"1">>}, {<<"zu">>, <<>>}, {<<"zl">>, <<>>}, {<<"ax">>, <<"U">>}, {<<"ay">>, <<"U">>}, {<<"ortb-pid">>, <<"536454.55">>}, {<<"ortb-sid">>, <<"112373.8">>}, {<<"seats">>, <<"999">>}, {<<"ortb-xt">>, <<"IAB24">>}, {<<"ortb-ugc">>, <<>>} ]). -define(QS_LONGER, [ {<<"i">>, <<"9pQNskA">>}, {<<"v">>, <<"0ySQQd1F">>}, {<<"ev">>, <<"12345678">>}, {<<"t">>, <<"12345">>}, {<<"sz">>, <<"3">>}, {<<"ip">>, <<"67.58.236.89">>}, {<<"la">>, <<"en">>}, {<<"pg">>, <<"http://www.yahoo.com/page1.htm">>}, {<<"re">>, <<"http://search.google.com">>}, {<<"fc">>, <<"1">>}, {<<"fr">>, <<"1">>}, {<<"br">>, <<"2">>}, {<<"bv">>, <<"3.0.14">>}, {<<"os">>, <<"1">>}, {<<"ov">>, <<"XP">>}, {<<"k">>, <<"cars,ford">>}, {<<"rs">>, <<"js">>}, {<<"xt">>, <<"5|22|234">>}, {<<"tz">>, <<"+180">>}, {<<"tk">>, <<"key1=value1|key2=value2">>}, {<<"zl">>, <<"4,5,6">>}, {<<"za">>, <<"4">>}, {<<"zu">>, <<"competitor.com">>}, {<<"ua">>, <<"Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) " "AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 " "Safari/534.13">>}, {<<"ortb-za">>, <<"1,6,13">>}, {<<"ortb-pid">>, <<"521732">>}, {<<"ortb-sid">>, <<"521732">>}, {<<"ortb-xt">>, <<"IAB3">>}, {<<"ortb-ugc">>, <<>>} ]). -ifdef(TEST). qs_test_() -> Tests = [ {[<<"a">>], error}, {[{<<"a">>, <<"b">>, <<"c">>}], error}, {[], <<>>}, {[{<<"a">>, true}], <<"a">>}, {[{<<"a">>, true}, {<<"b">>, true}], <<"a&b">>}, {[{<<"a">>, <<>>}], <<"a=">>}, {[{<<"a">>, <<"b">>}], <<"a=b">>}, {[{<<"a">>, <<>>}, {<<"b">>, <<>>}], <<"a=&b=">>}, {[{<<"a">>, <<"b">>}, {<<"c">>, true}, {<<"d">>, <<"e">>}], <<"a=b&c&d=e">>}, {[{<<"a">>, <<"b=c">>}, {<<"d">>, <<"e=f">>}, {<<"g">>, <<"h=i">>}], <<"a=b%3Dc&d=e%3Df&g=h%3Di">>}, {[{<<" ">>, true}], <<"+">>}, {[{<<" ">>, <<" ">>}], <<"+=+">>}, {[{<<"a b">>, <<"c d">>}], <<"a+b=c+d">>}, {[{<<" a ">>, <<" b ">>}, {<<" c ">>, <<" d ">>}], <<"+a+=+b+&+c+=+d+">>}, {[{<<"%&=">>, <<"%&=">>}, {<<"_-.">>, <<".-_">>}], <<"%25%26%3D=%25%26%3D&_-.=.-_">>}, {[{<<"for">>, <<"extend/ranch">>}], <<"for=extend%2Franch">>} ], [{lists:flatten(io_lib:format("~p", [Vals])), fun() -> E = try qs(Vals) of R -> R catch _:_ -> error end end} || {Vals, E} <- Tests]. qs_identity_test_() -> Tests = [ [{<<"+">>, true}], ?QS_SHORTER, ?QS_SHORT, ?QS_LONG, ?QS_LONGER ], [{lists:flatten(io_lib:format("~p", [V])), fun() -> V = parse_qs(qs(V)) end} || V <- Tests]. -endif. -ifdef(PERF). horse_qs_shorter() -> horse:repeat(20000, qs(?QS_SHORTER)). horse_qs_short() -> horse:repeat(20000, qs(?QS_SHORT)). horse_qs_long() -> horse:repeat(20000, qs(?QS_LONG)). horse_qs_longer() -> horse:repeat(20000, qs(?QS_LONGER)). -endif. %% @doc Decode a percent encoded string (x-www-form-urlencoded rules). -spec urldecode(B) -> B when B::binary(). urldecode(B) -> urldecode(B, <<>>). urldecode(<< $%, H, L, Rest/bits >>, Acc) -> C = (unhex(H) bsl 4 bor unhex(L)), urldecode(Rest, << Acc/bits, C >>); urldecode(<< $+, Rest/bits >>, Acc) -> urldecode(Rest, << Acc/bits, " " >>); urldecode(<< C, Rest/bits >>, Acc) when C =/= $% -> urldecode(Rest, << Acc/bits, C >>); urldecode(<<>>, Acc) -> Acc. unhex($0) -> 0; unhex($1) -> 1; unhex($2) -> 2; unhex($3) -> 3; unhex($4) -> 4; unhex($5) -> 5; unhex($6) -> 6; unhex($7) -> 7; unhex($8) -> 8; unhex($9) -> 9; unhex($A) -> 10; unhex($B) -> 11; unhex($C) -> 12; unhex($D) -> 13; unhex($E) -> 14; unhex($F) -> 15; unhex($a) -> 10; unhex($b) -> 11; unhex($c) -> 12; unhex($d) -> 13; unhex($e) -> 14; unhex($f) -> 15. -ifdef(TEST). urldecode_test_() -> Tests = [ {<<"%20">>, <<" ">>}, {<<"+">>, <<" ">>}, {<<"%00">>, <<0>>}, {<<"%fF">>, <<255>>}, {<<"123">>, <<"123">>}, {<<"%i5">>, error}, {<<"%5">>, error} ], [{Qs, fun() -> E = try urldecode(Qs) of R -> R catch _:_ -> error end end} || {Qs, E} <- Tests]. urldecode_identity_test_() -> Tests = [ <<"+">>, <<"nothingnothingnothingnothing">>, <<"Small+fast+modular+HTTP+server">>, <<"Small%2C+fast%2C+modular+HTTP+server.">>, <<"%E3%83%84%E3%82%A4%E3%83%B3%E3%82%BD%E3%82%A6%E3%83" "%AB%E3%80%9C%E8%BC%AA%E5%BB%BB%E3%81%99%E3%82%8B%E6%97%8B%E5" "%BE%8B%E3%80%9C">> ], [{V, fun() -> V = urlencode(urldecode(V)) end} || V <- Tests]. -endif. -ifdef(PERF). horse_urldecode() -> horse:repeat(100000, urldecode(<<"nothingnothingnothingnothing">>) ). horse_urldecode_plus() -> horse:repeat(100000, urldecode(<<"Small+fast+modular+HTTP+server">>) ). horse_urldecode_hex() -> horse:repeat(100000, urldecode(<<"Small%2C%20fast%2C%20modular%20HTTP%20server.">>) ). horse_urldecode_jp_hex() -> horse:repeat(100000, urldecode(<<"%E3%83%84%E3%82%A4%E3%83%B3%E3%82%BD%E3%82%A6%E3%83" "%AB%E3%80%9C%E8%BC%AA%E5%BB%BB%E3%81%99%E3%82%8B%E6%97%8B%E5" "%BE%8B%E3%80%9C">>) ). horse_urldecode_mix() -> horse:repeat(100000, urldecode(<<"Small%2C+fast%2C+modular+HTTP+server.">>) ). -endif. %% @doc Percent encode a string (x-www-form-urlencoded rules). -spec urlencode(B) -> B when B::binary(). urlencode(B) -> urlencode(B, <<>>). urlencode(<< $\s, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $+ >>); urlencode(<< $-, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $- >>); urlencode(<< $., Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $. >>); urlencode(<< $0, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $0 >>); urlencode(<< $1, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $1 >>); urlencode(<< $2, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $2 >>); urlencode(<< $3, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $3 >>); urlencode(<< $4, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $4 >>); urlencode(<< $5, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $5 >>); urlencode(<< $6, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $6 >>); urlencode(<< $7, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $7 >>); urlencode(<< $8, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $8 >>); urlencode(<< $9, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $9 >>); urlencode(<< $A, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $A >>); urlencode(<< $B, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $B >>); urlencode(<< $C, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $C >>); urlencode(<< $D, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $D >>); urlencode(<< $E, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $E >>); urlencode(<< $F, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $F >>); urlencode(<< $G, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $G >>); urlencode(<< $H, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $H >>); urlencode(<< $I, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $I >>); urlencode(<< $J, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $J >>); urlencode(<< $K, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $K >>); urlencode(<< $L, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $L >>); urlencode(<< $M, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $M >>); urlencode(<< $N, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $N >>); urlencode(<< $O, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $O >>); urlencode(<< $P, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $P >>); urlencode(<< $Q, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $Q >>); urlencode(<< $R, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $R >>); urlencode(<< $S, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $S >>); urlencode(<< $T, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $T >>); urlencode(<< $U, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $U >>); urlencode(<< $V, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $V >>); urlencode(<< $W, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $W >>); urlencode(<< $X, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $X >>); urlencode(<< $Y, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $Y >>); urlencode(<< $Z, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $Z >>); urlencode(<< $_, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $_ >>); urlencode(<< $a, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $a >>); urlencode(<< $b, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $b >>); urlencode(<< $c, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $c >>); urlencode(<< $d, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $d >>); urlencode(<< $e, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $e >>); urlencode(<< $f, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $f >>); urlencode(<< $g, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $g >>); urlencode(<< $h, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $h >>); urlencode(<< $i, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $i >>); urlencode(<< $j, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $j >>); urlencode(<< $k, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $k >>); urlencode(<< $l, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $l >>); urlencode(<< $m, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $m >>); urlencode(<< $n, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $n >>); urlencode(<< $o, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $o >>); urlencode(<< $p, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $p >>); urlencode(<< $q, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $q >>); urlencode(<< $r, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $r >>); urlencode(<< $s, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $s >>); urlencode(<< $t, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $t >>); urlencode(<< $u, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $u >>); urlencode(<< $v, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $v >>); urlencode(<< $w, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $w >>); urlencode(<< $x, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $x >>); urlencode(<< $y, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $y >>); urlencode(<< $z, Rest/bits >>, Acc) -> urlencode(Rest, << Acc/bits, $z >>); urlencode(<< C, Rest/bits >>, Acc) -> H = hex(C bsr 4), L = hex(C band 16#0f), urlencode(Rest, << Acc/bits, $%, H, L >>); urlencode(<<>>, Acc) -> Acc. hex( 0) -> $0; hex( 1) -> $1; hex( 2) -> $2; hex( 3) -> $3; hex( 4) -> $4; hex( 5) -> $5; hex( 6) -> $6; hex( 7) -> $7; hex( 8) -> $8; hex( 9) -> $9; hex(10) -> $A; hex(11) -> $B; hex(12) -> $C; hex(13) -> $D; hex(14) -> $E; hex(15) -> $F. -ifdef(TEST). urlencode_test_() -> Tests = [ {<<255, 0>>, <<"%FF%00">>}, {<<255, " ">>, <<"%FF+">>}, {<<" ">>, <<"+">>}, {<<"aBc123">>, <<"aBc123">>}, {<<".-_">>, <<".-_">>} ], [{V, fun() -> E = urlencode(V) end} || {V, E} <- Tests]. urlencode_identity_test_() -> Tests = [ <<"+">>, <<"nothingnothingnothingnothing">>, <<"Small fast modular HTTP server">>, <<"Small, fast, modular HTTP server.">>, <<227,131,132,227,130,164,227,131,179,227,130,189,227, 130,166,227,131,171,227,128,156,232,188,170,229,187,187,227, 129,153,227,130,139,230,151,139,229,190,139,227,128,156>> ], [{V, fun() -> V = urldecode(urlencode(V)) end} || V <- Tests]. -endif. -ifdef(PERF). horse_urlencode() -> horse:repeat(100000, urlencode(<<"nothingnothingnothingnothing">>) ). horse_urlencode_plus() -> horse:repeat(100000, urlencode(<<"Small fast modular HTTP server">>) ). horse_urlencode_jp() -> horse:repeat(100000, urlencode(<<227,131,132,227,130,164,227,131,179,227,130,189,227, 130,166,227,131,171,227,128,156,232,188,170,229,187,187,227, 129,153,227,130,139,230,151,139,229,190,139,227,128,156>>) ). horse_urlencode_mix() -> horse:repeat(100000, urlencode(<<"Small, fast, modular HTTP server.">>) ). -endif.