You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
183 lines
4.7 KiB
183 lines
4.7 KiB
function formatTime(date) {
|
|
const year = date.getFullYear()
|
|
const month = date.getMonth() + 1
|
|
const day = date.getDate()
|
|
const hour = date.getHours()
|
|
const minute = date.getMinutes()
|
|
const second = date.getSeconds()
|
|
|
|
return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
|
|
}
|
|
|
|
function formatNumber(n) {
|
|
n = n.toString()
|
|
return n[1] ? n : '0' + n
|
|
}
|
|
|
|
|
|
function uint8ArrayToString(fileData){
|
|
let dataString = "";
|
|
for (let i = 0; i < fileData.length; i++) {
|
|
dataString += String.fromCharCode(fileData[i]);
|
|
}
|
|
return dataString
|
|
}
|
|
|
|
function stringToUint8Array(str){
|
|
let arr = [];
|
|
for (let i = 0, j = str.length; i < j; ++i) {
|
|
arr.push(str.charCodeAt(i));
|
|
}
|
|
let tmpUint8Array = new Uint8Array(arr);
|
|
return tmpUint8Array
|
|
}
|
|
|
|
function stringToUint8ArrayWithPadding(str, length, padding){
|
|
let arr = [];
|
|
for (let i = 0, j = str.length; i < j; ++i) {
|
|
arr.push(str.charCodeAt(i));
|
|
}
|
|
|
|
for (let i = str.length; i < length; i++) {
|
|
arr.push(padding);
|
|
}
|
|
|
|
let tmpUint8Array = new Uint8Array(arr);
|
|
return tmpUint8Array
|
|
}
|
|
|
|
|
|
|
|
|
|
// 微信官方给的ArrayBuffer转十六进制示例
|
|
function ab2hex(buffer) {
|
|
let hexArr = Array.prototype.map.call(
|
|
new Uint8Array(buffer),
|
|
function (bit) {
|
|
return ('00' + bit.toString(16)).slice(-2)
|
|
}
|
|
)
|
|
return hexArr.join(',');
|
|
}
|
|
|
|
//转成可展会的文字
|
|
function hexCharCodeToStr(hexCharCodeStr) {
|
|
let trimedStr = hexCharCodeStr.trim();
|
|
let rawStr = trimedStr.substr(0, 2).toLowerCase() === '0x' ? trimedStr.substr(2) : trimedStr;
|
|
let len = rawStr.length;
|
|
let curCharCode;
|
|
let resultStr = [];
|
|
for (let i = 0; i < len; i = i + 2) {
|
|
curCharCode = parseInt(rawStr.substr(i, 2), 16);
|
|
resultStr.push(String.fromCharCode(curCharCode));
|
|
}
|
|
return resultStr.join('');
|
|
}
|
|
|
|
//转换成需要的格式
|
|
function buf2string(buffer) {
|
|
let arr = Array.prototype.map.call(new Uint8Array(buffer), x => x)
|
|
|
|
return arr.map((char, i) => {
|
|
return String.fromCharCode(char);
|
|
}).join('');
|
|
}
|
|
|
|
function decodeHexNibble(c) {
|
|
if (c >= 48 && c <= 57) {
|
|
return c - 48;
|
|
} else if (c >= 65 && c <= 70) {
|
|
return c - 65 + 10;
|
|
} else {
|
|
return c >= 97 && c <= 102 ? c - 97 + 10 : -1;
|
|
}
|
|
}
|
|
|
|
function decodeHexByte(s, pos) {
|
|
let hi = decodeHexNibble(s.charCodeAt(pos));
|
|
let lo = decodeHexNibble(s.charCodeAt(pos + 1));
|
|
return ((hi << 4) + lo);
|
|
}
|
|
|
|
function hexStringToBytesWithPadding(str, byteLen, padding) {
|
|
let len = str.length
|
|
let length = 2 * byteLen
|
|
|
|
if (length >= len && (length & 1) == 0) {
|
|
if (length == 0) {
|
|
return [0];
|
|
} else {
|
|
let bytes = new Uint8Array(length >>> 1);
|
|
|
|
for(let i = 0; i < len; i += 2) {
|
|
bytes[i >>> 1] = decodeHexByte(str, i);
|
|
}
|
|
|
|
for(let i = 0; i < byteLen-len/2; i++)
|
|
bytes[len/2+i] = padding;
|
|
|
|
return bytes;
|
|
}
|
|
}
|
|
else
|
|
return [0];
|
|
}
|
|
|
|
|
|
function timeStringToBytes(timeStr, timeLen) {
|
|
let s = timeStr;
|
|
if(s.length < timeLen)
|
|
{
|
|
let tmp = timeLen-s.length
|
|
for(let i = 0; i< tmp; i++)
|
|
s = "0" + s;
|
|
}
|
|
else
|
|
s = timeStr.substr(s.length-timeLen, s.length);
|
|
|
|
let start = 0
|
|
let length = s.length
|
|
|
|
if (length >= 0 && (length & 1) == 0) {
|
|
if (length == 0) {
|
|
return new byte[0];
|
|
} else {
|
|
let bytes = new Uint8Array(length >>> 1);
|
|
|
|
for(let i = 0; i < length; i += 2) {
|
|
bytes[i >>> 1] = decodeHexByte(s, start + i);
|
|
}
|
|
|
|
return bytes;
|
|
}
|
|
}
|
|
else
|
|
return [0];
|
|
}
|
|
|
|
function time40ToBytes(dt) {
|
|
|
|
var cs = dt.substring(0,4) + "/" + dt.substring(4,6) + "/" + dt.substring(6,8) + " " + dt.substring(8,10) + ":" + dt.substring(10,12)
|
|
+ ":" + dt.substring(12,14) + ":100";
|
|
|
|
var milliTs = new Date(cs).getTime();
|
|
var secondTs = milliTs/1000
|
|
let ts = secondTs.toString(16)
|
|
let t = timeStringToBytes(ts, 10)
|
|
return t;
|
|
}
|
|
|
|
module.exports = {
|
|
formatTime: formatTime,
|
|
uint8ArrayToString: uint8ArrayToString,
|
|
stringToUint8Array: stringToUint8Array,
|
|
stringToUint8ArrayWithPadding: stringToUint8ArrayWithPadding,
|
|
ab2hex: ab2hex,
|
|
hexCharCodeToStr,
|
|
hexCharCodeToStr: buf2string,
|
|
decodeHexNibble,
|
|
decodeHexNibble: decodeHexByte,
|
|
hexStringToBytesWithPadding: hexStringToBytesWithPadding,
|
|
timeStringToBytes: timeStringToBytes,
|
|
time40ToBytes: time40ToBytes
|
|
}
|