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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
import { primordials } from "ext:core/mod.js";
const { RegExpPrototypeTest, SafeRegExp } = primordials;
const tokenRegExp = new SafeRegExp(/^[\^_`a-zA-Z\-0-9!#$%&'*+.|~]+$/);
/**
* Verifies that the given val is a valid HTTP token
* per the rules defined in RFC 7230
* See https://tools.ietf.org/html/rfc7230#section-3.2.6
*/
function checkIsHttpToken(val: string) {
return RegExpPrototypeTest(tokenRegExp, val);
}
const headerCharRegex = new SafeRegExp(/[^\t\x20-\x7e\x80-\xff]/);
/**
* True if val contains an invalid field-vchar
* field-value = *( field-content / obs-fold )
* field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
* field-vchar = VCHAR / obs-text
*/
function checkInvalidHeaderChar(val: string) {
return RegExpPrototypeTest(headerCharRegex, val);
}
export const chunkExpression = new SafeRegExp(/(?:^|\W)chunked(?:$|\W)/i);
export {
checkInvalidHeaderChar as _checkInvalidHeaderChar,
checkIsHttpToken as _checkIsHttpToken,
};
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