29 lines
568 B
JavaScript
29 lines
568 B
JavaScript
|
'use strict'
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
unescape: unescape,
|
||
|
|
escape: escape,
|
||
|
|
encode: encode,
|
||
|
|
decode: decode
|
||
|
|
}
|
||
|
|
|
||
|
|
function unescape (str) {
|
||
|
|
return (str + '==='.slice((str.length + 3) % 4))
|
||
|
|
.replace(/-/g, '+')
|
||
|
|
.replace(/_/g, '/')
|
||
|
|
}
|
||
|
|
|
||
|
|
function escape (str) {
|
||
|
|
return str.replace(/\+/g, '-')
|
||
|
|
.replace(/\//g, '_')
|
||
|
|
.replace(/=/g, '')
|
||
|
|
}
|
||
|
|
|
||
|
|
function encode (str, encoding) {
|
||
|
|
return escape(Buffer.from(str, encoding || 'utf8').toString('base64'))
|
||
|
|
}
|
||
|
|
|
||
|
|
function decode (str, encoding) {
|
||
|
|
return Buffer.from(unescape(str), 'base64').toString(encoding || 'utf8')
|
||
|
|
}
|