56 lines
1.2 KiB
JavaScript
56 lines
1.2 KiB
JavaScript
|
import {characterEntitiesLegacy} from 'character-entities-legacy'
|
||
|
|
import {characterEntitiesHtml4} from 'character-entities-html4'
|
||
|
|
import {dangerous} from '../constant/dangerous.js'
|
||
|
|
|
||
|
|
const own = {}.hasOwnProperty
|
||
|
|
|
||
|
|
/**
|
||
|
|
* `characterEntitiesHtml4` but inverted.
|
||
|
|
*
|
||
|
|
* @type {Record<string, string>}
|
||
|
|
*/
|
||
|
|
const characters = {}
|
||
|
|
|
||
|
|
/** @type {string} */
|
||
|
|
let key
|
||
|
|
|
||
|
|
for (key in characterEntitiesHtml4) {
|
||
|
|
if (own.call(characterEntitiesHtml4, key)) {
|
||
|
|
characters[characterEntitiesHtml4[key]] = key
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Configurable ways to encode characters as named references.
|
||
|
|
*
|
||
|
|
* @param {number} code
|
||
|
|
* @param {number} next
|
||
|
|
* @param {boolean|undefined} omit
|
||
|
|
* @param {boolean|undefined} attribute
|
||
|
|
* @returns {string}
|
||
|
|
*/
|
||
|
|
export function toNamed(code, next, omit, attribute) {
|
||
|
|
const character = String.fromCharCode(code)
|
||
|
|
|
||
|
|
if (own.call(characters, character)) {
|
||
|
|
const name = characters[character]
|
||
|
|
const value = '&' + name
|
||
|
|
|
||
|
|
if (
|
||
|
|
omit &&
|
||
|
|
characterEntitiesLegacy.includes(name) &&
|
||
|
|
!dangerous.includes(name) &&
|
||
|
|
(!attribute ||
|
||
|
|
(next &&
|
||
|
|
next !== 61 /* `=` */ &&
|
||
|
|
/[^\da-z]/i.test(String.fromCharCode(next))))
|
||
|
|
) {
|
||
|
|
return value
|
||
|
|
}
|
||
|
|
|
||
|
|
return value + ';'
|
||
|
|
}
|
||
|
|
|
||
|
|
return ''
|
||
|
|
}
|