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Percent decode #1361

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merged 13 commits into from
Aug 15, 2024
Merged

Percent decode #1361

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c48c4ec
Percent decode
slowcheetah Aug 12, 2024
485c871
Percent decode
slowcheetah Aug 12, 2024
75fdae9
Percent decode
slowcheetah Aug 12, 2024
598d3de
Percent decode
slowcheetah Aug 12, 2024
b2ddb51
Percent decode
slowcheetah Aug 12, 2024
3f75274
Percent decode
slowcheetah Aug 12, 2024
f012003
Percent decode
slowcheetah Aug 12, 2024
ba501bf
Percent decode
slowcheetah Aug 12, 2024
b3e76ef
Percent decode
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5eaf948
Percent decode
slowcheetah Aug 13, 2024
a476cc5
Percent decode
slowcheetah Aug 13, 2024
177312e
Optimization & fixes
slowcheetah Aug 14, 2024
db0ef53
Methods refactoring
slowcheetah Aug 15, 2024
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147 changes: 128 additions & 19 deletions packages/core-js/modules/web.url-search-params.constructor.js
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Original file line number Diff line number Diff line change
@@ -1,9 +1,11 @@
'use strict';
// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
require('../modules/es.array.iterator');
require('../modules/es.string.from-code-point');
var $ = require('../internals/export');
var globalThis = require('../internals/global-this');
var safeGetBuiltIn = require('../internals/safe-get-built-in');
var getBuiltIn = require('../internals/get-built-in');
var call = require('../internals/function-call');
var uncurryThis = require('../internals/function-uncurry-this');
var DESCRIPTORS = require('../internals/descriptors');
Expand All @@ -30,6 +32,7 @@ var createIterResultObject = require('../internals/create-iter-result-object');
var validateArgumentsLength = require('../internals/validate-arguments-length');
var wellKnownSymbol = require('../internals/well-known-symbol');
var arraySort = require('../internals/array-sort');
var padStart = require('../internals/string-pad').start;

var ITERATOR = wellKnownSymbol('iterator');
var URL_SEARCH_PARAMS = 'URLSearchParams';
Expand All @@ -43,9 +46,7 @@ var NativeRequest = safeGetBuiltIn('Request');
var Headers = safeGetBuiltIn('Headers');
var RequestPrototype = NativeRequest && NativeRequest.prototype;
var HeadersPrototype = Headers && Headers.prototype;
var RegExp = globalThis.RegExp;
var TypeError = globalThis.TypeError;
var decodeURIComponent = globalThis.decodeURIComponent;
var encodeURIComponent = globalThis.encodeURIComponent;
var charAt = uncurryThis(''.charAt);
var join = uncurryThis([].join);
Expand All @@ -57,31 +58,139 @@ var split = uncurryThis(''.split);
var stringSlice = uncurryThis(''.slice);

var plus = /\+/g;
var sequences = Array(4);
var FALLBACK_REPLACER = '\uFFFD';
var VALID_HEX = /^[0-9a-f]+$/i;

var percentSequence = function (bytes) {
return sequences[bytes - 1] || (sequences[bytes - 1] = RegExp('((?:%[\\da-f]{2}){' + bytes + '})', 'gi'));
var indexOf = uncurryThis(''.indexOf);
var numberToString = uncurryThis(1.0.toString);
var fromCharCode = String.fromCharCode;
var fromCodePoint = getBuiltIn('String', 'fromCodePoint');
var $parseInt = parseInt;
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var parseHexOctet = function (string, start) {
var substr = stringSlice(string, start, start + 2);
if (!VALID_HEX.test(substr)) return NaN;
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return $parseInt(substr, 16);
};

var percentDecode = function (sequence) {
try {
return decodeURIComponent(sequence);
} catch (error) {
return sequence;
var getLeadingOnes = function (octet) {
var binString = padStart(numberToString(octet, 2), 8, '0');
return indexOf(binString, '0') !== -1 ? indexOf(binString, '0') : binString.length;
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};
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Awesome -)


var utf8Decode = function (octets) {
var len = octets.length;
var codePoint = null;

switch (len) {
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case 1:
codePoint = octets[0];
break;
case 2:
codePoint = (octets[0] & 0x1F) << 6 | (octets[1] & 0x3F);
break;
case 3:
codePoint = (octets[0] & 0x0F) << 12 | (octets[1] & 0x3F) << 6 | (octets[2] & 0x3F);
break;
case 4:
codePoint = (octets[0] & 0x07) << 18 | (octets[1] & 0x3F) << 12 | (octets[2] & 0x3F) << 6 | (octets[3] & 0x3F);
break;
}

return codePoint > 0x10FFFF ? null : codePoint;
};

var deserialize = function (it) {
var result = replace(it, plus, ' ');
var bytes = 4;
try {
return decodeURIComponent(result);
} catch (error) {
while (bytes) {
result = replace(result, percentSequence(bytes--), percentDecode);
/* eslint-disable max-statements -- TODO */
var decode = function (input) {
var length = input.length;
var result = '';
var i = 0;

while (i < length) {
var decodedChar = input[i];
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if (decodedChar === '%') {
if (i + 3 > length && i + 1 !== length) {
/* eslint-disable no-useless-assignment -- TODO */
decodedChar = FALLBACK_REPLACER;
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break;
}

if (input[i + 1] === '%' || i + 1 === length) {
result += '%';
i++;
continue;
}

var octet = parseHexOctet(input, i + 1);

if (isNaN(octet)) {
result += decodedChar;
i++;
continue;
}

i += 2;
var byteSequenceLength = getLeadingOnes(octet);

if (byteSequenceLength === 0) {
decodedChar = fromCharCode(octet);
} else {
if (byteSequenceLength === 1 || byteSequenceLength > 4) {
result += FALLBACK_REPLACER;
i++;
continue;
}

var octets = [octet];
var sequenceIndex = 1;

while (sequenceIndex < byteSequenceLength) {
i++;
if (i + 3 > length || input[i] !== '%') {
break;
}

var nextByte = parseHexOctet(input, i + 1);

if (nextByte > 191 || nextByte < 128) { // incorrect next byte
break;
}

if (isNaN(nextByte)) {
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i += 3;
break;
}
octets.push(nextByte);
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i += 2;
sequenceIndex++;
}

if (octets.length !== byteSequenceLength) {
result += FALLBACK_REPLACER;
continue;
}

var codePoint = utf8Decode(octets);
if (codePoint === null) {
result += FALLBACK_REPLACER;
} else {
decodedChar = fromCodePoint(codePoint);
}
}
}
return result;

result += decodedChar;
i++;
}

return result;
};

var deserialize = function (it) {
var result = replace(it, plus, ' ');
return decode(result);
};
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var find = /[!'()~]|%20/g;
Expand Down
29 changes: 29 additions & 0 deletions tests/unit-global/web.url-search-params.js
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Original file line number Diff line number Diff line change
Expand Up @@ -100,6 +100,35 @@ QUnit.test('URLSearchParams', assert => {
params = new URLSearchParams(params.toString());
assert.same(params.get('query'), '+15555555555', 'parse encoded +');

params = new URLSearchParams('b=%2sf%2a');
assert.same(params.get('b'), '%2sf*', 'parse encoded %2sf%2a');
params = new URLSearchParams('b=%%2a');
assert.same(params.get('b'), '%*', 'parse encoded b=%%2a');

params = new URLSearchParams('a=b\u2384');
assert.same(params.get('a'), 'b\u2384', 'parse \u2384');
params = new URLSearchParams('a\u2384b=c');
assert.same(params.get('a\u2384b'), 'c', 'parse \u2384');

params = new URLSearchParams('a=b%e2%8e%84');
assert.same(params.get('a'), 'b\u2384', 'parse b%e2%8e%84');
params = new URLSearchParams('a%e2%8e%84b=c');
assert.same(params.get('a\u2384b'), 'c', 'parse b%e2%8e%84');

params = new URLSearchParams('a=b\uD83D\uDCA9c');
assert.same(params.get('a'), 'b\uD83D\uDCA9c', 'parse \uD83D\uDCA9');
params = new URLSearchParams('a\uD83D\uDCA9b=c');
assert.same(params.get('a\uD83D\uDCA9b'), 'c', 'parse \uD83D\uDCA9');

params = new URLSearchParams('a=b%f0%9f%92%a9c');
assert.same(params.get('a'), 'b\uD83D\uDCA9c', 'parse %f0%9f%92%a9');
params = new URLSearchParams('a%f0%9f%92%a9b=c');
assert.same(params.get('a\uD83D\uDCA9b'), 'c', 'parse %f0%9f%92%a9');

assert.same(String(new URLSearchParams('%C2')), '%EF%BF%BD=');
assert.same(String(new URLSearchParams('%F0%9F%D0%90')), '%EF%BF%BD%D0%90=');
assert.same(String(new URLSearchParams('%25')), '%25=');

const testData = [
{ input: '?a=%', output: [['a', '%']], name: 'handling %' },
{ input: { '+': '%C2' }, output: [['+', '%C2']], name: 'object with +' },
Expand Down
29 changes: 29 additions & 0 deletions tests/unit-pure/web.url-search-params.js
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,35 @@ QUnit.test('URLSearchParams', assert => {
params = new URLSearchParams(params.toString());
assert.same(params.get('query'), '+15555555555', 'parse encoded +');

params = new URLSearchParams('b=%2sf%2a');
assert.same(params.get('b'), '%2sf*', 'parse encoded %2sf%2a');
params = new URLSearchParams('b=%%2a');
assert.same(params.get('b'), '%*', 'parse encoded b=%%2a');

params = new URLSearchParams('a=b\u2384');
assert.same(params.get('a'), 'b\u2384', 'parse \u2384');
params = new URLSearchParams('a\u2384b=c');
assert.same(params.get('a\u2384b'), 'c', 'parse \u2384');

params = new URLSearchParams('a=b%e2%8e%84');
assert.same(params.get('a'), 'b\u2384', 'parse b%e2%8e%84');
params = new URLSearchParams('a%e2%8e%84b=c');
assert.same(params.get('a\u2384b'), 'c', 'parse b%e2%8e%84');

params = new URLSearchParams('a=b\uD83D\uDCA9c');
assert.same(params.get('a'), 'b\uD83D\uDCA9c', 'parse \uD83D\uDCA9');
params = new URLSearchParams('a\uD83D\uDCA9b=c');
assert.same(params.get('a\uD83D\uDCA9b'), 'c', 'parse \uD83D\uDCA9');

params = new URLSearchParams('a=b%f0%9f%92%a9c');
assert.same(params.get('a'), 'b\uD83D\uDCA9c', 'parse %f0%9f%92%a9');
params = new URLSearchParams('a%f0%9f%92%a9b=c');
assert.same(params.get('a\uD83D\uDCA9b'), 'c', 'parse %f0%9f%92%a9');

assert.same(String(new URLSearchParams('%C2')), '%EF%BF%BD=');
assert.same(String(new URLSearchParams('%F0%9F%D0%90')), '%EF%BF%BD%D0%90=');
assert.same(String(new URLSearchParams('%25')), '%25=');

const testData = [
{ input: '?a=%', output: [['a', '%']], name: 'handling %' },
{ input: { '+': '%C2' }, output: [['+', '%C2']], name: 'object with +' },
Expand Down