v2.0.0

src/common/utils/common.ts

@@ -0,0 +1,175 @@
+// 非业务工具方法
+
+/**
+ * 获取两个数之间的随机整数，大于等于min，小于max
+ * @param {*} min
+ * @param {*} max
+ */
+export const getRandom = (min: number, max: number): number => Math.floor(Math.random() * (max - min)) + min
+
+
+export const sizeFormate = (size: number): string => {
+  // https://gist.github.com/thomseddon/3511330
+  if (!size) return '0 B'
+  let units = ['B', 'KB', 'MB', 'GB', 'TB']
+  let number = Math.floor(Math.log(size) / Math.log(1024))
+  return `${(size / Math.pow(1024, Math.floor(number))).toFixed(2)} ${units[number]}`
+}
+
+const numFix = (n: number): string => n < 10 ? (`0${n}`) : n.toString()
+/**
+    * 日期格式化
+    * @param {*} date 时间
+    * @param {String} format 时间格式，默认YYYY-MM-DD hh:mm:ss
+    */
+export const dateFormat = (date: string | number | Date, format = 'YYYY-MM-DD hh:mm:ss') => {
+  if (typeof date != 'object') date = new Date(date)
+  return format
+    .replace('YYYY', date.getFullYear().toString())
+    .replace('MM', numFix(date.getMonth() + 1).toString())
+    .replace('DD', numFix(date.getDate()))
+    .replace('hh', numFix(date.getHours()))
+    .replace('mm', numFix(date.getMinutes()))
+    .replace('ss', numFix(date.getSeconds()))
+}
+
+
+export const formatPlayTime = (time: number) => {
+  let m = Math.trunc(time / 60)
+  let s = Math.trunc(time % 60)
+  return m == 0 && s == 0 ? '--/--' : numFix(m) + ':' + numFix(s)
+}
+
+export const formatPlayTime2 = (time: number) => {
+  let m = Math.trunc(time / 60)
+  let s = Math.trunc(time % 60)
+  return numFix(m) + ':' + numFix(s)
+}
+
+
+const encodeNames = {
+  '&nbsp;': ' ',
+  '&amp;': '&',
+  '&lt;': '<',
+  '&gt;': '>',
+  '&quot;': '"',
+  '&apos;': "'",
+  '&#039;': "'",
+} as const
+export const decodeName = (str: string | null = '') => {
+  return str?.replace(/(?:&amp;|&lt;|&gt;|&quot;|&apos;|&#039;|&nbsp;)/gm, (s: string) => encodeNames[s as keyof typeof encodeNames]) ?? ''
+}
+
+// 解析URL参数为对象
+export const parseUrlParams = (str: string): Record<string, string> => {
+  const params: Record<string, string> = {}
+  if (typeof str !== 'string') return params
+  const paramsArr = str.split('&')
+  for (const param of paramsArr) {
+    let [key, value] = param.split('=')
+    params[key] = value
+  }
+  return params
+}
+
+/**
+ * 生成节流函数
+ * @param fn 回调
+ * @param delay 延迟
+ * @returns
+ */
+export function throttle<Args extends any[]>(fn: (...args: Args) => void | Promise<void>, delay = 100) {
+  let timer: NodeJS.Timeout | null = null
+  let _args: Args
+  return (...args: Args) => {
+    _args = args
+    if (timer) return
+    timer = setTimeout(() => {
+      timer = null
+      void fn(..._args)
+    }, delay)
+  }
+}
+
+/**
+ * 生成防抖函数
+ * @param fn 回调
+ * @param delay 延迟
+ * @returns
+ */
+export function debounce<Args extends any[]>(fn: (...args: Args) => void | Promise<void>, delay = 100) {
+  let timer: NodeJS.Timeout | null = null
+  let _args: Args
+  return (...args: Args) => {
+    _args = args
+    if (timer) clearTimeout(timer)
+    timer = setTimeout(() => {
+      timer = null
+      void fn(..._args)
+    }, delay)
+  }
+}
+
+const fileNameRxp = /[\\/:*?#"<>|]/g
+export const filterFileName = (name: string): string => name.replace(fileNameRxp, '')
+
+
+// https://blog.csdn.net/xcxy2015/article/details/77164126#comments
+/**
+ *
+ * @param a
+ * @param b
+ */
+export const similar = (a: string, b: string) => {
+  if (!a || !b) return 0
+  if (a.length > b.length) { // 保证 a <= b
+    let t = b
+    b = a
+    a = t
+  }
+  let al = a.length
+  let bl = b.length
+  let mp = [] // 一个表
+  let i, j, ai, lt, tmp // ai：字符串a的第i个字符。 lt：左上角的值。 tmp：暂存新的值。
+  for (i = 0; i <= bl; i++) mp[i] = i
+  for (i = 1; i <= al; i++) {
+    ai = a.charAt(i - 1)
+    lt = mp[0]
+    mp[0] = mp[0] + 1
+    for (j = 1; j <= bl; j++) {
+      tmp = Math.min(mp[j] + 1, mp[j - 1] + 1, lt + (ai == b.charAt(j - 1) ? 0 : 1))
+      lt = mp[j]
+      mp[j] = tmp
+    }
+  }
+  return 1 - (mp[bl] / bl)
+}
+
+/**
+ * 排序字符串
+ * @param arr
+ * @param data
+ */
+export const sortInsert = (arr: Array<{ num: number, data: any }>, data: { num: number, data: any }) => {
+  let key = data.num
+  let left = 0
+  let right = arr.length - 1
+
+  while (left <= right) {
+    let middle = Math.trunc((left + right) / 2)
+    if (key == arr[middle].num) {
+      left = middle
+      break
+    } else if (key < arr[middle].num) {
+      right = middle - 1
+    } else {
+      left = middle + 1
+    }
+  }
+  while (left > 0) {
+    if (arr[left - 1].num != key) break
+    left--
+  }
+
+  arr.splice(left, 0, data)
+}