Font replacer

Replace fonts hard coded by websites
目前为 2022-01-02 提交的版本。查看最新版本。
换行
// ==UserScript==
// @name        Font replacer
// @namespace   font-replacer
// @grant       none
// @version     1.0
// @author      Coxxs
// @description Replace fonts hard coded by websites
// @include     *
// @license     MIT
// @run-at      document-start
// ==/UserScript==

function applyCSS(css) {
  if (!document.head) {
    const observer = new MutationObserver((mutations, observer) => {
      if (!document.head) return
      addCSS(css)
      observer.disconnect()
    })
    observer.observe(document.documentElement, { childList: true, subtree: true })
    return
  }
  addCSS(css)
}

function addCSS(css) {
  let style = document.createElement("style")
  style.innerHTML = css
  document.head.prepend(style)
}

class Replacer {
  constructor() {
    this.css = []
  }
  add(from, to) {
    for (const font of to) {
      let extra = []
      if (font.weight) {
        extra += `font-weight:${font.weight};`
      }
      this.css.push(`@font-face{font-family:"${from}";${extra}src:local("${font['name']}")}`)}
    }
  toString() {
    return this.css.join('')
  }
}

let replacer = new Replacer()

/**** Replace rules START *****/

const to = [
  // { name: 'HarmonyOS Sans SC' },
  /*
  { name: 'MiSans Thin', weight: 100 },
  { name: 'MiSans ExtraLight', weight: 200 },
  { name: 'MiSans Light', weight: 300 },
  { name: 'MiSans Regular', weight: 400 },
  { name: 'MiSans Medium', weight: 500 },
  { name: 'MiSans Demibold', weight: 600 },
  { name: 'MiSans Bold', weight: 700 },
  { name: 'MiSans Heavy', weight: 900 },
  */
  { name: 'Source Han Sans SC' },
]

replacer.add("宋体", to)
replacer.add("SimSun", to)
replacer.add("新宋体", to)
replacer.add("NSimSun", to)
replacer.add("华文中宋", to)
replacer.add("STZhongsong", to)
replacer.add("微软雅黑", to)
replacer.add("Microsoft YaHei", to)
replacer.add("Microsoft JhengHei", to)
replacer.add("黑体", to)
replacer.add("SimHei", to)
replacer.add("华文细黑", to)
replacer.add("STXihei", to)
replacer.add("STHeiTi", to)
replacer.add("幼圆", to)

/**** Replace rules END *****/

applyCSS(replacer.toString())
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