124 lines
No EOL
2.6 KiB
JavaScript
Executable file
124 lines
No EOL
2.6 KiB
JavaScript
Executable file
function bytesToInt(bytes, numberOfBytes)
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{
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let buffer = [];
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if(Array.isArray(bytes))
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{
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buffer = bytes.slice(0);
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if(numberOfBytes != undefined)
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{
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buffer = bytes.slice(bytes.length - numberOfBytes);
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}
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}
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else buffer.push(bytes);
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//var decimal = (buffer[0] << 24) + (buffer[1] << 16) + (buffer[2] << 8) + buffer[3];
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let l = (buffer.length - 1) * 8;
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let decimal = 0;
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for(let i = 0; i < buffer.length; i++)
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{
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var s = buffer[i] << l;
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if(l < 8) s = buffer[i]
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decimal = decimal + s;
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l = l - 8;
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}
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return decimal;
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}
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function resizeArray(arr, newSize, defaultValue) {
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while(newSize > arr.length)
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arr.push(defaultValue);
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arr.length = newSize;
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}
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longToByteArray = function(/*long*/long) {
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// we want to represent the input as a 8-bytes array
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var byteArray = [0, 0, 0, 0, 0, 0, 0, 0];
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for ( var index = 0; index < byteArray.length; index ++ ) {
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var byte = long & 0xff;
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byteArray [ index ] = byte;
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long = (long - byte) / 256 ;
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}
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return byteArray;
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};
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function addDays(date, days) {
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var result = new Date(date);
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result.setDate(result.getDate() + days);
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return result;
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}
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/*
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sleep(2000).then(() => {
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// Do something after the sleep!
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});
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*/
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function sleep (time) {
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return new Promise((resolve) => setTimeout(resolve, time));
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}
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function isEmptyObject( obj ) {
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for ( var name in obj ) {
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return false;
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}
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return true;
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}
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function convertUTCDateToLocalDate(date) {
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var newDate = new Date(date);
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newDate.setMinutes(date.getMinutes() + date.getTimezoneOffset());
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return newDate;
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}
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function addZeroBefore(n) {
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return (n < 10 ? '0' : '') + n;
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}
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var convertBase = function () {
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function convertBase(baseFrom, baseTo) {
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return function (num) {
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return parseInt(num, baseFrom).toString(baseTo);
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};
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}
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// binary to decimal
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convertBase.bin2dec = convertBase(2, 10);
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// binary to hexadecimal
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convertBase.bin2hex = convertBase(2, 16);
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// decimal to binary
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convertBase.dec2bin = convertBase(10, 2);
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// decimal to hexadecimal
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convertBase.dec2hex = convertBase(10, 16);
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// hexadecimal to binary
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convertBase.hex2bin = convertBase(16, 2);
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// hexadecimal to decimal
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convertBase.hex2dec = convertBase(16, 10);
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return convertBase;
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}();
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module.exports = {
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bytesToInt,
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longToByteArray,
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addDays,
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addZeroBefore,
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resizeArray,
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isEmptyObject,
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sleep,
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convertUTCDateToLocalDate
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} |