104 lines
2.6 KiB
JavaScript
104 lines
2.6 KiB
JavaScript
|
"use strict";
|
||
|
|
const { utf8Encode, utf8DecodeWithoutBOM } = require("./encoding");
|
||
|
|
const { percentDecodeBytes, utf8PercentEncodeString, isURLEncodedPercentEncode } = require("./percent-encoding");
|
||
|
|
|
||
|
|
// https://url.spec.whatwg.org/#concept-urlencoded-parser
|
||
|
|
function parseUrlencoded(input) {
|
||
|
|
const sequences = strictlySplitByteSequence(input, 38);
|
||
|
|
const output = [];
|
||
|
|
for (const bytes of sequences) {
|
||
|
|
if (bytes.length === 0) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
let name;
|
||
|
|
let value;
|
||
|
|
const indexOfEqual = bytes.indexOf(61);
|
||
|
|
|
||
|
|
if (indexOfEqual >= 0) {
|
||
|
|
name = bytes.slice(0, indexOfEqual);
|
||
|
|
value = bytes.slice(indexOfEqual + 1);
|
||
|
|
} else {
|
||
|
|
name = bytes;
|
||
|
|
value = new Uint8Array(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
name = replaceByteInByteSequence(name, 0x2B, 0x20);
|
||
|
|
value = replaceByteInByteSequence(value, 0x2B, 0x20);
|
||
|
|
|
||
|
|
const nameString = utf8DecodeWithoutBOM(percentDecodeBytes(name));
|
||
|
|
const valueString = utf8DecodeWithoutBOM(percentDecodeBytes(value));
|
||
|
|
|
||
|
|
output.push([nameString, valueString]);
|
||
|
|
}
|
||
|
|
return output;
|
||
|
|
}
|
||
|
|
|
||
|
|
// https://url.spec.whatwg.org/#concept-urlencoded-string-parser
|
||
|
|
function parseUrlencodedString(input) {
|
||
|
|
return parseUrlencoded(utf8Encode(input));
|
||
|
|
}
|
||
|
|
|
||
|
|
// https://url.spec.whatwg.org/#concept-urlencoded-serializer
|
||
|
|
function serializeUrlencoded(tuples, encodingOverride = undefined) {
|
||
|
|
let encoding = "utf-8";
|
||
|
|
if (encodingOverride !== undefined) {
|
||
|
|
// TODO "get the output encoding", i.e. handle encoding labels vs. names.
|
||
|
|
encoding = encodingOverride;
|
||
|
|
}
|
||
|
|
|
||
|
|
let output = "";
|
||
|
|
for (const [i, tuple] of tuples.entries()) {
|
||
|
|
// TODO: handle encoding override
|
||
|
|
|
||
|
|
const name = utf8PercentEncodeString(tuple[0], isURLEncodedPercentEncode, true);
|
||
|
|
|
||
|
|
let value = tuple[1];
|
||
|
|
if (tuple.length > 2 && tuple[2] !== undefined) {
|
||
|
|
if (tuple[2] === "hidden" && name === "_charset_") {
|
||
|
|
value = encoding;
|
||
|
|
} else if (tuple[2] === "file") {
|
||
|
|
// value is a File object
|
||
|
|
value = value.name;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
value = utf8PercentEncodeString(value, isURLEncodedPercentEncode, true);
|
||
|
|
|
||
|
|
if (i !== 0) {
|
||
|
|
output += "&";
|
||
|
|
}
|
||
|
|
output += `${name}=${value}`;
|
||
|
|
}
|
||
|
|
return output;
|
||
|
|
}
|
||
|
|
|
||
|
|
function strictlySplitByteSequence(buf, cp) {
|
||
|
|
const list = [];
|
||
|
|
let last = 0;
|
||
|
|
let i = buf.indexOf(cp);
|
||
|
|
while (i >= 0) {
|
||
|
|
list.push(buf.slice(last, i));
|
||
|
|
last = i + 1;
|
||
|
|
i = buf.indexOf(cp, last);
|
||
|
|
}
|
||
|
|
if (last !== buf.length) {
|
||
|
|
list.push(buf.slice(last));
|
||
|
|
}
|
||
|
|
return list;
|
||
|
|
}
|
||
|
|
|
||
|
|
function replaceByteInByteSequence(buf, from, to) {
|
||
|
|
let i = buf.indexOf(from);
|
||
|
|
while (i >= 0) {
|
||
|
|
buf[i] = to;
|
||
|
|
i = buf.indexOf(from, i + 1);
|
||
|
|
}
|
||
|
|
return buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
parseUrlencodedString,
|
||
|
|
serializeUrlencoded
|
||
|
|
};
|