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crc.html
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crc.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CRC 校验码</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://cdn.staticfile.org/jquery/3.6.0/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/5.0.2/js/bootstrap.bundle.min.js"></script>
<link rel="stylesheet" href="https://bootswatch.com/_vendor/bootstrap/dist/css/bootstrap.min.css">
<link id="css" data-theme="bootstrap" rel="stylesheet" href="https://bootswatch.com/_vendor/bootstrap/dist/css/bootstrap.min.css" crossorigin="anonymous">
<!-- <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/4.7.0/css/font-awesome.css"> -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/font/bootstrap-icons.css">
<link rel="stylesheet" href="/basis/css/bootstrap-init.css">
<style>
.gap-row>* {
margin-bottom: 1rem;
}
label {
user-select: none;
}
div.input-group-text.addon2 {
padding: 0;
flex-direction: column;
justify-content: flex-start;
background-color: transparent;
border-color: var(--addon2-border-color);
}
div.input-group-text.addon2>button {
border-top: none;
border-left: none;
border-right: none;
border-radius: 0;
}
div.input-group-text.addon2>button:first-of-type {
border-top-right-radius: .25rem;
}
#original-data {
border-right-color: var(--addon2-border-color);
}
.access-key {
opacity: 0.75;
margin-left: 0.25em;
font-family: monospace;
}
.btn-group>* {
width: 100%;
}
</style>
</head>
<body>
<div class="container-fluid">
<h4 class="mb-4">CRC 校验码</h4>
<form class="row g-3">
<div class="col-lg-8 gap-row">
<div class="col-12">
<label for="check-algorithm" class="form-label">校验算法</label>
<select id="check-algorithm" class="form-select"></select>
</div>
<div class="col-12">
<label for="original-data" class="form-label">原始数据</label>
<div class="d-grid mb-3">
<div class="btn-group" role="group" aria-label="Basic radio toggle button group">
<input type="radio" class="btn-check" name="original-form-radio" id="original-hex" autocomplete="off">
<label class="btn btn-outline-primary" for="original-hex" data-bs-toggle="tooltip" data-bs-placement="top" title="输入 16 进制数">Hex</label>
<input type="radio" class="btn-check" name="original-form-radio" id="original-ascii" autocomplete="off">
<label class="btn btn-outline-primary" for="original-ascii" data-bs-toggle="tooltip" data-bs-placement="top" title="输入基本拉丁文（ASCII 字符）">ASCII</label>
</div>
</div>
<div class="input-group">
<textarea class="form-control" id="original-data" rows="7"></textarea>
<div class="input-group-text addon2">
<button class="btn btn-outline-secondary" type="button" id="copy-orig" accesskey="p" data-target="#original-data">复制</button>
<button class="btn btn-outline-secondary" type="button" id="paste-orig" accesskey="v" data-target="#original-data">粘贴</button>
<button class="btn btn-outline-secondary" type="button" id="clear-orig" accesskey="r" data-target="#original-data">清空</button>
</div>
</div>
</div>
<div class="d-grid">
<button class="btn btn-primary" type="button" id="calculate" accesskey="a">计算</button>
</div>
<div class="col-12">
<label for="result-data" class="form-label">CRC 校验码</label>
<div class="input-group mb-3">
<input type="text" class="form-control" id="result-data" readonly>
<button class="btn btn-outline-secondary" type="button" id="copy-result" accesskey="c" data-target="#result-data">复制</button>
</div>
</div>
<div class="col-12">
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="result-form-radio" id="result-hex" checked>
<label class="form-check-label" for="result-hex" data-bs-toggle="tooltip" data-bs-placement="bottom" title="输出 16 进制数" data-bs-offset="10,0">Hex</label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="result-form-radio" id="result-bin">
<label class="form-check-label" for="result-bin" data-bs-toggle="tooltip" data-bs-placement="bottom" title="输出 2 进制数">Bin</label>
</div>
</div>
</div>
<div class="col-lg-4">
<div class="card mb-3">
<div class="card-body">
<h5 class="card-title">信息</h5>
<table class="table table-hover card-text">
<tbody id="info-table"></tbody>
</table>
</div>
</div>
</div>
</form>
</div>
<script>
var NightTime = {
lightDo: () => document.documentElement.style.setProperty("--addon2-border-color", "var(--bs-secondary)"),
darkDo: () => document.documentElement.style.setProperty("--addon2-border-color", "var(--bs-light)"),
}
const type = obj => (obj ? obj.constructor.name : Object.prototype.toString.call(obj).slice(8, -1));
/**
* 16 进制类，方便直接输入/输出 16 进制数据
*/
class Hex {
constructor(data) {
this.data = BigInt(data);
}
toNumber() {
return this.data;
}
toString() { // 利用这个神奇的函数名字可以非常方便地转字符串
return "0x" + this.data.toString(16).padStart(4, '0').toUpperCase();
}
}
const hex = data => new Hex(data);
class CRC {
static list = [];
/**
* @param {object} info - CRC 校验算法的相关信息。
* @param {function} formula - CRC 校验算法的计算函数。
*/
constructor(info, formula) {
if (
type(formula) != "Function" ||
type(info) != "Object" ||
type(info.name) != "String"
) throw "N/A";
this.info = info;
this.formula = formula;
this.appendOption()
CRC.list.push(this);
$("#check-algorithm").change();
}
appendOption() {
const option = document.createElement("option");
// option.value = this.info.name;
option.value = $("#check-algorithm").children().length;
const queue = [this.info.name];
if (this.info.expression) queue.push(this.info.expression);
if (this.info.details) queue.push(this.info.details);
option.innerText = queue.join(' ');
$("#check-algorithm").append(option);
}
/**
* CRC16 校验码 的便捷封装函数
* @param {string} data - 直接输入 16 进制内容的字符串。
* @return {string[]} 也会直接返回一个字符串数组。第零位是修改过的原数据，第一位才是结果。
*/
getCrc(data) {
if (data == 0 || data == '') return [data === '' ? '' : 0, 0];
if (type(data) == "Number" && isFinite(data) || type(data) == "BigInt") data = data.toString(16);
if (type(data) == "String") {
data = formatHex(data);
data = data.splitWithinSeveralChar(2);
}
if (type(data) == "Array") {
let original = "";
for (const char of data) {
if (typeof char != "number" || char < 0 || char > 0xff)
throw NaN;
original += char.toString(16).padStart(2, '0').toUpperCase() + ' ';
}
original = original.slice(0, -1); // 去掉末尾多余的空格
const isBinMulti = resultHex() ? 1 : 4;
let result = this.formula(data, data.length).toString(resultHex() ? 16 : 2).padStart(4 * isBinMulti, '0').toUpperCase();
return [
originalHex() ? original : ascii2hex(original, false),
this.info.order ? result.slice(-2 * isBinMulti) + result.slice(-4 * isBinMulti, -2 * isBinMulti) : result.slice(-4 * isBinMulti)
];
}
throw NaN;
}
showInfo() {
$("#info-table").html('');
for (let key in this.info) {
let value = this.info[key];
const
tr = document.createElement("tr"),
th = document.createElement("th"),
td = document.createElement("td");
key = key[0].toUpperCase() + key.slice(1);
if (type(value) == "Boolean")
value = value ? "True" : "False";
th.scope = "row";
th.innerText = key;
td.innerText = value;
tr.appendChild(th);
tr.appendChild(td);
$("#info-table").append(tr);
}
}
}
$("#original-data").css("min-height", (() => {
const btns = $(".input-group-text.addon2").children();
return (btns[0].clientHeight + 1) * btns.length + 2 + "px";
})());
$("[accesskey]").each((_, item) => {
item.innerHTML += `<kbd class="access-key">${item.accessKey.toUpperCase()}</kbd>`;
});
$("#clear-orig").click(function () {
$(this.dataset.target).val('').focus();
});
$("#check-algorithm").change(() => CRC.list[$("#check-algorithm").val()].showInfo());
$("#calculate").click(() => {
let original = $("#original-data").val();
if (!originalHex()) original = ascii2hex(original, true);
const result = CRC.list[$("#check-algorithm").val()].getCrc(original);
$("#original-data").val(result[0]);
$("#result-data").val(result[1]);
});
$("[id^=copy]").click(function () {
$(this.dataset.target).select();
document.execCommand("copy");
this.focus();
});
$("[id^=paste]").click(async function (e) {
const target = $(this.dataset.target);
target.focus();
try {
const text = await navigator.clipboard.readText();
target.val(text);
} catch (err) {
console.error('Failed to read clipboard contents: ', err);
}
});
$("[name=original-form-radio]").click(() => {
const isHex = originalHex();
if (isHex == originalHex.curIsHex) return;
originalHex.curIsHex = isHex;
const original = $("#original-data");
original.val(ascii2hex(original.val(), isHex)).attr("placeholder", isHex ? "例：11 22 33 44 或 0x11 0x22 0x33 或 0x11,0x22,0x33" : "");
});
$("[name=result-form-radio").click(() => $("#calculate").click());
function resultHex() {
return $("#result-hex").is(":checked");
}
function originalHex() {
return $("#original-hex").is(":checked");
}
originalHex.curIsHex = false;
function formatHex(hex) {
hex = hex.toUpperCase().replaceAll("0x", '').replace(/[^A-F0-9]/g, '');
while (hex[0] == '0') hex = hex.slice(1);
if (hex.length % 2) hex = '0' + hex;
return hex;
}
String.prototype.splitWithinSeveralChar = function (several = 1) {
let arr = [];
for (let i = 0; i < this.length; i += several)
arr.push(parseInt(this.slice(i, i + several), 16));
return arr;
};
function ascii2hex(data, toHex = true) {
if (type(data) != "String") throw "Not a String";
if (!toHex) {
data = formatHex(data);
const arr = data.splitWithinSeveralChar(2);
let str = String.fromCharCode.apply(null, arr);
return str;
} else {
const arr = [];
for (const char of data) {
let charCode = char.charCodeAt().toString(16);
if (charCode.length % 2) charCode = '0' + charCode;
arr.push(charCode);
}
return arr.join(' ').toUpperCase();
}
}
var CRC16_XMODEM = new CRC({
name: "CRC-16/XMODEM",
width: 16,
expression: "x16+x12+x5+1",
poly: hex(0x1021),
init: hex(0x0000),
refIn: false,
refOut: false,
xorOut: hex(0x0000),
alias: `CRC-16/ZMODEM, CRC16/ACORN`,
order: true,
details: `高字节在前，低字节在后`,
},
/**
* CRC16/XMODEM 校验码
* @param {number[]} puchMsg - 传入一个存储十六进制输入的数组，数组的每一位只能有一个字节。
* @return {number} - 以数字形式返回校验码，需要用 {@code toString(16)} 转换为 16 进制字符串。
*/
puchMsg => {
let usDataLen = puchMsg.length,
wCRCin = 0x0000,
wCPoly = 0x1021,
wChar = 0;
for (let j = 0; j < usDataLen; j++) {
wChar = puchMsg[j];
wCRCin ^= wChar << 8;
for (let i = 0; i < 8; i++)
if (wCRCin & 0x8000)
wCRCin = (wCRCin << 1) ^ wCPoly;
else
wCRCin = wCRCin << 1;
}
return wCRCin;
});
$(document).ready(function () {
$('[data-bs-toggle="tooltip"]').tooltip();
});
document.onkeydown = e => {
if (e.key == "Enter") {
$("#calculate").click();
}
};
$("#original-hex").click(); // 仅仅是为了调用一遍函数
</script>
<script src="/basis/NightTime.js"></script>
</body>
</html>