@trpc/server
Version:
80 lines (77 loc) • 2.87 kB
JavaScript
;
/**
* Based on https://github.com/unjs/cookie-es/tree/v1.2.2
* MIT License
*
* Cookie-es copyright (c) Pooya Parsa <pooya@pi0.io>
* Set-Cookie parsing based on https://github.com/nfriedly/set-cookie-parser
* Copyright (c) 2015 Nathan Friedly <nathan@nfriedly.com> (http://nfriedly.com/)
*
* @see https://github.com/unjs/cookie-es/blob/main/src/set-cookie/split.ts
*/ /**
* Set-Cookie header field-values are sometimes comma joined in one string. This splits them without choking on commas
* that are within a single set-cookie field-value, such as in the Expires portion.
*
* See https://tools.ietf.org/html/rfc2616#section-4.2
*/ function splitSetCookieString(cookiesString) {
if (Array.isArray(cookiesString)) {
return cookiesString.flatMap((c)=>splitSetCookieString(c));
}
if (typeof cookiesString !== "string") {
return [];
}
const cookiesStrings = [];
let pos = 0;
let start;
let ch;
let lastComma;
let nextStart;
let cookiesSeparatorFound;
const skipWhitespace = ()=>{
while(pos < cookiesString.length && /\s/.test(cookiesString.charAt(pos))){
pos += 1;
}
return pos < cookiesString.length;
};
const notSpecialChar = ()=>{
ch = cookiesString.charAt(pos);
return ch !== "=" && ch !== ";" && ch !== ",";
};
while(pos < cookiesString.length){
start = pos;
cookiesSeparatorFound = false;
while(skipWhitespace()){
ch = cookiesString.charAt(pos);
if (ch === ",") {
// ',' is a cookie separator if we have later first '=', not ';' or ','
lastComma = pos;
pos += 1;
skipWhitespace();
nextStart = pos;
while(pos < cookiesString.length && notSpecialChar()){
pos += 1;
}
// currently special character
if (pos < cookiesString.length && cookiesString.charAt(pos) === "=") {
// we found cookies separator
cookiesSeparatorFound = true;
// pos is inside the next cookie, so back up and return it.
pos = nextStart;
cookiesStrings.push(cookiesString.slice(start, lastComma));
start = pos;
} else {
// in param ',' or param separator ';',
// we continue from that comma
pos = lastComma + 1;
}
} else {
pos += 1;
}
}
if (!cookiesSeparatorFound || pos >= cookiesString.length) {
cookiesStrings.push(cookiesString.slice(start));
}
}
return cookiesStrings;
}
exports.splitSetCookieString = splitSetCookieString;