147 lines
2.6 KiB
JavaScript
147 lines
2.6 KiB
JavaScript
export function saveFile(bin, fileName) {
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var link = document.createElement('a')
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link.href = URL.createObjectURL(bin)
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link.download = fileName
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// 兼容火狐浏览器对于a链接click无效的问题，将a链接作为子节点放置到body元素下
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document.body.appendChild(link)
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link.click()
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// 下载后移除a链接
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document.body.removeChild(link)
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}
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/**
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* 增强版 String
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*/
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export class SString {
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#origin = ''
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#list = []
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constructor(str = '') {
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this.#origin = str
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for (let it of str) {
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this.#list.push(it)
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}
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}
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get length() {
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return this.#list.length
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}
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at(index = 0) {
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if (this.length > 0) {
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while (index < 0) {
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index += this.length
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}
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return this.#list[index]
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}
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}
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split() {
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return this.#list
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}
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forEach(callback) {
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for (let i in this.#list) {
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if (callback(this.#list[i], i) === false) {
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break
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}
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}
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return this
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}
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toString() {
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return this.#origin
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}
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}
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/**
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* 特殊版 Enum
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*/
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export class Enum {
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#dict_k = Object.create(null)
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#dict_v = Object.create(null)
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length = 0
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constructor(obj = {}) {
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for (let k in obj) {
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this.add(k, obj[k])
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}
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}
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add(k, v) {
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if (this.#dict_k[k]) {
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var _v = this.#dict_k[k]
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for (let t of _v) {
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this.#dict_v[t] = this.#dict_v[t].filter(i => i !== k)
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}
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} else {
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this.#dict_k[k] = Array.isArray(v) ? v : [v]
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this.length++
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}
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if (Array.isArray(v)) {
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for (let t of v) {
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if (this.#dict_v[t]) {
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this.#dict_v[t].push(k)
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} else {
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this.#dict_v[t] = [k]
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}
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}
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} else {
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this.#dict_v[v] = [k]
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}
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}
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remove(k) {
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var v = this.#dict_k[k]
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if (v) {
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delete this.#dict_k[k]
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for (let t of v) {
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delete this.#dict_v[t]
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}
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this.length--
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}
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}
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get(k) {
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if (this.#dict_k[k]) {
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return this.#dict_k[k]
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} else if (this.#dict_v[k]) {
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return this.#dict_v[k]
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}
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}
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concat(...args) {
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for (let li of args) {
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li.forEach((it, k) => {
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this.add(k, it)
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})
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}
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}
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forEach(callback, forV) {
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var dict = forV ? this.#dict_v : this.#dict_k
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for (let k in dict) {
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if (callback(dict[k], k) === false) {
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break
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}
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}
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return this
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}
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toString(forV) {
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var dict = forV ? this.#dict_v : this.#dict_k
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var text = ''
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for (let k in dict) {
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text += `${k} ${dict[k].join(' ')}\n`
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}
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return text.trim()
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}
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toJson(forV) {
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return JSON.stringify(forV ? this.#dict_v : this.#dict_k)
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}
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}
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