sfccxt/js/base/functions/string.js

A JavaScript / Python / PHP cryptocurrency trading library with support for 130+ exchanges

"use strict";

const uuid = a => a ? (a ^ Math.random () * 16 >> a / 4).toString (16) : ([1e7]+-1e3+-4e3+-8e3+-1e11).replace (/[018]/g, uuid)
const uuid16 = a => a ? (a ^ Math.random () * 16 >> a / 4).toString (16) : ([1e5]+1e2+4e2+8e3).replace (/[018]/g, uuid16)
const uuid22 = a => a ? (a ^ Math.random () * 16 >> a / 4).toString (16) : ([1e7]+1e3+4e3+8e5).replace (/[018]/g, uuid22)

module.exports = {

    uuid
    , uuid16
    , uuid22
    // unCamelCase has to work with the following edge cases
    //
    //     parseOHLCVs               > parse_ohlcvs
    //     safeString2               > safe_string_2
    //     safeStringN               > safe_string_n
    //     convertOHLCVToTradingView > convert_ohlcv_to_trading_view
    //     fetchL2OrderBook          > fetch_l2_order_book
    //     stringToBase64            > string_to_base64
    //     base64ToString            > base64_to_string
    //     parseHTTPResponse         > parse_http_response
    //     hasFetchOHLCV             > has_fetch_ohlcv
    //
    , unCamelCase: s => s.match (/[A-Z]/) ? s.replace (/[a-z0-9][A-Z]/g, x => x[0] + '_' + x[1]).replace(/[A-Z0-9][A-Z0-9][a-z][^$]/g, x => x[0] + '_' + x[1] + x[2] + x[3]).replace(/[a-z][0-9]$/g, x=> x[0] + '_' + x[1]).toLowerCase () : s
    , capitalize: s => s.length ? (s.charAt (0).toUpperCase () + s.slice (1)) : s
    , strip: s => s.replace(/^\s+|\s+$/g, '')
}