ljw
35 lignes
878 B
JavaScript
35 lignes
878 B
JavaScript
export function get_suffix(filename) {
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var pos = filename.lastIndexOf('.')
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var suffix = ''
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if (pos !== -1) {
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suffix = filename.substring(pos)
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}
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return suffix
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}
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export function random_string(len) {
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len = len || 32
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var chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678'
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var maxPos = chars.length
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var pwd = ''
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for (let i = 0; i < len; i++) {
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pwd += chars.charAt(Math.floor(Math.random() * maxPos))
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}
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return pwd
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}
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export function random_filename(filename) {
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var suffix = get_suffix(filename)
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var time = new Date()
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var time2 = new Date('2020/01/01')
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return Math.ceil((time.getTime() - time2.getTime()) / 1000) + '_' + random_string(10) + suffix
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}
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export function utf8_to_b64(str) {
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return window.btoa(unescape(encodeURIComponent(str)))
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}
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export function b64_to_utf8(str) {
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return decodeURIComponent(escape(window.atob(str)))
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}
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