TanTan
e311ca3275
Build NapCat Artifacts / Windows Loader Test (push) Canceled after 0s
Build NapCat Artifacts / Type Check & Test (push) Canceled after 0s
Build NapCat Artifacts / Build NapCat.Framework (push) Canceled after 0s
Build NapCat Artifacts / Build NapCat.Shell (push) Canceled after 0s
43 lines
1.2 KiB
Plaintext
43 lines
1.2 KiB
Plaintext
import {codes, values} from 'micromark-util-symbol'
|
|
|
|
/**
|
|
* Turn the number (in string form as either hexa- or plain decimal) coming from
|
|
* a numeric character reference into a character.
|
|
*
|
|
* Sort of like `String.fromCodePoint(Number.parseInt(value, base))`, but makes
|
|
* non-characters and control characters safe.
|
|
*
|
|
* @param {string} value
|
|
* Value to decode.
|
|
* @param {number} base
|
|
* Numeric base.
|
|
* @returns {string}
|
|
* Character.
|
|
*/
|
|
export function decodeNumericCharacterReference(value, base) {
|
|
const code = Number.parseInt(value, base)
|
|
|
|
if (
|
|
// C0 except for HT, LF, FF, CR, space.
|
|
code < codes.ht ||
|
|
code === codes.vt ||
|
|
(code > codes.cr && code < codes.space) ||
|
|
// Control character (DEL) of C0, and C1 controls.
|
|
(code > codes.tilde && code < 160) ||
|
|
// Lone high surrogates and low surrogates.
|
|
(code > 55_295 && code < 57_344) ||
|
|
// Noncharacters.
|
|
(code > 64_975 && code < 65_008) ||
|
|
/* eslint-disable no-bitwise */
|
|
(code & 65_535) === 65_535 ||
|
|
(code & 65_535) === 65_534 ||
|
|
/* eslint-enable no-bitwise */
|
|
// Out of range
|
|
code > 1_114_111
|
|
) {
|
|
return values.replacementCharacter
|
|
}
|
|
|
|
return String.fromCodePoint(code)
|
|
}
|