ludu-admin-vue3/src/utils/index.ts

/**
 *
 * @param component 需要注册的组件
 * @param alias 组件别名
 * @returns any
 */
export const withInstall = <T>(component: T, alias?: string) => {
  const comp = component as any
  comp.install = (app: any) => {
    app.component(comp.name || comp.displayName, component)
    if (alias) {
      app.config.globalProperties[alias] = component
    }
  }
  return component as T & Plugin
}

/**
 * @param str 需要转下划线的驼峰字符串
 * @returns 字符串下划线
 */
export const humpToUnderline = (str: string): string => {
  return str.replace(/([A-Z])/g, '-$1').toLowerCase()
}

/**
 * @param str 需要转驼峰的下划线字符串
 * @returns 字符串驼峰
 */
export const underlineToHump = (str: string): string => {
  if (!str) return ''
  return str.replace(/\-(\w)/g, (_, letter: string) => {
    return letter.toUpperCase()
  })
}

export const setCssVar = (prop: string, val: any, dom = document.documentElement) => {
  dom.style.setProperty(prop, val)
}

/**
 * 查找数组对象的某个下标
 * @param {Array} ary 查找的数组
 * @param {Functon} fn 判断的方法
 */
// eslint-disable-next-line
export const findIndex = <T = Recordable>(ary: Array<T>, fn: Fn): number => {
  if (ary.findIndex) {
    return ary.findIndex(fn)
  }
  let index = -1
  ary.some((item: T, i: number, ary: Array<T>) => {
    const ret: T = fn(item, i, ary)
    if (ret) {
      index = i
      return ret
    }
  })
  return index
}

export const trim = (str: string) => {
  return str.replace(/(^\s*)|(\s*$)/g, '')
}

/**
 * @param {Date | number | string} time 需要转换的时间
 * @param {String} fmt 需要转换的格式 如 yyyy-MM-dd、yyyy-MM-dd HH:mm:ss
 */
export const formatTime = (time: Date | number | string, fmt: string) => {
  if (!time) return ''
  else {
    const date = new Date(time)
    const o = {
      'M+': date.getMonth() + 1,
      'd+': date.getDate(),
      'H+': date.getHours(),
      'm+': date.getMinutes(),
      's+': date.getSeconds(),
      'q+': Math.floor((date.getMonth() + 3) / 3),
      S: date.getMilliseconds()
    }
    if (/(y+)/.test(fmt)) {
      fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
    }
    for (const k in o) {
      if (new RegExp('(' + k + ')').test(fmt)) {
        fmt = fmt.replace(
          RegExp.$1,
          RegExp.$1.length === 1 ? o[k] : ('00' + o[k]).substr(('' + o[k]).length)
        )
      }
    }
    return fmt
  }
}

/**
 * 生成随机字符串
 */
export const toAnyString = () => {
  const str: string = 'xxxxx-xxxxx-4xxxx-yxxxx-xxxxx'.replace(/[xy]/g, (c: string) => {
    const r: number = (Math.random() * 16) | 0
    const v: number = c === 'x' ? r : (r & 0x3) | 0x8
    return v.toString()
  })
  return str
}

export const generateUUID = () => {
  if (typeof crypto === 'object') {
    if (typeof crypto.randomUUID === 'function') {
      return crypto.randomUUID()
    }
    if (typeof crypto.getRandomValues === 'function' && typeof Uint8Array === 'function') {
      const callback = (c: any) => {
        const num = Number(c)
        return (num ^ (crypto.getRandomValues(new Uint8Array(1))[0] & (15 >> (num / 4)))).toString(
          16
        )
      }
      return '10000000-1000-4000-8000-100000000000'.replace(/[018]/g, callback)
    }
  }
  let timestamp = new Date().getTime()
  let performanceNow =
    (typeof performance !== 'undefined' && performance.now && performance.now() * 1000) || 0
  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
    let random = Math.random() * 16
    if (timestamp > 0) {
      random = (timestamp + random) % 16 | 0
      timestamp = Math.floor(timestamp / 16)
    } else {
      random = (performanceNow + random) % 16 | 0
      performanceNow = Math.floor(performanceNow / 16)
    }
    return (c === 'x' ? random : (random & 0x3) | 0x8).toString(16)
  })
}

/**
 * element plus 的文件大小 Formatter 实现
 *
 * @param row 行数据
 * @param column 字段
 * @param cellValue 字段值
 */
// @ts-ignore
export const fileSizeFormatter = (row, column, cellValue) => {
  const fileSize = cellValue
  const unitArr = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
  const srcSize = parseFloat(fileSize)
  const index = Math.floor(Math.log(srcSize) / Math.log(1024))
  const size = srcSize / Math.pow(1024, index)
  const sizeStr = size.toFixed(2) //保留的小数位数
  return sizeStr + ' ' + unitArr[index]
}