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2 changed files with 66 additions and 103 deletions
12
README.md
12
README.md
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# infohash ↔ base64 tool
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You can check the tool at
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<https://magmaus3.codeberg.page/infohash2base64/> (requires javascript)
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This tool was made to work with
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[an suggestion posted by @toxictenement@lemmy.dbzer0.com](https://lemmy.dbzer0.com/post/1009713)
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by [magmaus3](https://magmaus3.eu.org).
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You can check the source code by downloading the page
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(everything is stored in a single html file),
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by going to your browser's devtools or on [Codeberg](https://codeberg.org/magmaus3/infohash2base64).
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139
index.html
139
index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>infohash ↔ base64</title>
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<title></title>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<script>
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// @license http://www.wtfpl.net/txt/copying/ WTFPL
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function infohashToBase64(infohash) {
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// Converts an hex infohash into base64.
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// Convert hex into an byte array
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let byteArray = infohash.replace(/[^0-9a-fA-F]/g, '')
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/*
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* TODO:
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* - [ ] rewrite functions to not use copied functions
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* - [x] add UI
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* - [x] add style
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* - [ ] make everything not look like made at 0:41 on a phone
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*/
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function hexToBytes(hexdata) {
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// https://stackoverflow.com/a/39396866
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var arr = hexdata.replace(/[^0-9a-fA-F]/g, '')
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.match(/[0-9a-fA-F]{2}/g);
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for(var i = 0; i<byteArray.length; i++) {
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byteArray[i] = parseInt(byteArray[i], 16);
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for(var i = 0; i<arr.length; i++) {
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arr[i] = parseInt(arr[i], 16);
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}
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// Convert byteArray into base64
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return arr;
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}
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function bytesToBase64(byteArray) {
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// https://stackoverflow.com/a/11562550
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return btoa(
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String.fromCharCode.apply(
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null, new Uint8Array(byteArray)
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)
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);
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}
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function base64ToInfohash(b64) {
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// Converts a base64 value into a infohash (in a hex form)
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// Convert base64 into an byteArray
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let binaryString = atob(b64);
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let byteArray = new Uint8Array(binaryString.length);
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function base64ToArray(base64) {
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// https://stackoverflow.com/a/21797381
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var binaryString = atob(base64);
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var bytes = new Uint8Array(binaryString.length);
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for (var i = 0; i < binaryString.length; i++) {
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byteArray[i] = binaryString.charCodeAt(i);
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bytes[i] = binaryString.charCodeAt(i);
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}
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// Convert byteArray into hex values
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return bytes;
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}
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function bytesToHex(byteArray) {
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// https://stackoverflow.com/a/34310051
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return Array.from(byteArray, function(byte) {
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return ('0' + (byte & 0xFF).toString(16)).slice(-2);
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}).join('');
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}
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function infohashToBase64(infohash) {
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return bytesToBase64(
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hexToBytes(infohash)
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);
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}
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function base64ToInfohash(b64) {
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return bytesToHex(
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base64ToArray(b64)
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);
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}
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// Everything for the UI itself
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// Holds the state of tabs.
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// Intended values are "encode", "decode" and "about"
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// Intended values are "encode" and "decode"
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let tabOpen = "encode"
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function switchTab(name) {
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// Switches the tab
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// only "encode","decode" and "about" values are supported
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let url = new URL(window.location)
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url.searchParams.set("tab", name)
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window.history.replaceState(null, "", url.href)
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if (name === "encode") {
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document.getElementById("encode").style.display = "block"
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document.getElementById("decode").style.display = "none"
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@ -87,40 +106,33 @@
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document.getElementById("decodeResult").innerText = base64ToInfohash(urlParams.get("base64value"))
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}
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});
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// @license-end
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</script>
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<style>
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body {
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width: 100vw; height: 100vh;
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margin: 0; padding: 0;
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display: flex; flex-direction: column;
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justify-content: center;
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align-items: center;
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justify-content: center; text-align: center;
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background-color: #10101a;
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color: white;
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font-family: monospace;
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}
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main {
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background-color: #202025;
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padding: 1em;
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border: 1px solid white;
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border-radius: 1em;
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box-shadow: 0px 5px 15px black, 0px 1px 15px black inset;
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width: 50%; border-radius: 1em;
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}
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input {
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color: white;
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background-color: transparent;
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border: 1px solid white;
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border: 1px solid #50505a;
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}
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label {
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margin-right: 0.5rem;
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}
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.tab {
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display: none; /* Default value to keep tabs hidden when JS is not available */
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border: 1px solid white;
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padding: 1em;
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border-radius: 0em 0em 1em 1em;
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box-shadow: 0px 5px 15px black, 0px 1px 15px black inset;
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padding: 0.5em;
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border-radius: 0em 1em 1em 1em;
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}
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.result:empty { display: none;}
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.result {
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@ -130,52 +142,36 @@
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border: 1px solid gray;
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border-radius: 1em;
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}
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.tab, .tabBar {
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.tabBar {
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display: none; /* Default value to keep tabs hidden when JS is not available */
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border-collapse: collapse;
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}
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.button {
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flex: 1;
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text-align: center;
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padding: 0.5em;
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border: 1px solid white;
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border-bottom: none;
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transition: box-shadow 200ms ease;
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}
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.leftButton {
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border-radius: 1em 0em 0em 0em;
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}
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.rightButton {
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border-radius: 0em 1em 0em 0em;
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}
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.button:hover {
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box-shadow: 0px 5px 25px black;
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box-shadow: 1px 5px 15px black;
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}
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.button:active {
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background-color: rgba(255,255,255, 0.2);
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}
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a { color: cyan; text-decoration: none;}
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ul > li {
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margin-bottom: 1em;
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}
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#about, .noscript {
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display: block;
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max-width: 40rem;
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}
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</style>
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</head>
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<body>
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<main>
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<h1>infohash ↔ base64</h1>
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<noscript>
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<div class="noscript">
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<p>This tool requires JavaScript to function.</p>
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<p>You can use DevTools in your browser to look at the code (it's intended to be easily readable).</p>
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</div>
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This tool requires JavaScript to function.
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You can use DevTools in your browser to look at the code (it's intended to be easily readable).
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</noscript>
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<div class="tabBar">
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<div onclick="switchTab('encode')" class="button leftButton">Encode</div>
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<div onclick="switchTab('encode')" class="button">Encode</div>
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<div onclick="switchTab('decode')" class="button">Decode</div>
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<div onclick="switchTab('about')" class="button rightButton">About</div>
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<div onclick="switchTab('about')" class="button">About</div>
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</div>
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<div class="tab" id="encode">
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<form>
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@ -196,6 +192,7 @@
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<div class="result" id="decodeResult"></div>
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</div>
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<div class="tab" id="about">
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<form>
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<h2>About</h2>
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<p>
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This tool was made to work with <a href="https://lemmy.dbzer0.com/post/1009713">an suggestion posted by @toxictenement@lemmy.dbzer0.com</a>
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@ -203,32 +200,10 @@
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</p>
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<p>
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You can check the source code by downloading the page (everything is stored in a single html file),
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by going to your browser's devtools or on <a href="https://codeberg.org/magmaus3/infohash2base64">Codeberg</a>.
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by going to your browser's devtools or on codeberg.
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</p>
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<h3>License</h3>
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<p>Copyright © 2023 magmaus3 <magmaus3@disroot.org></p>
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<p>This work is free. You can redistribute it and/or modify it under the
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terms of the Do What The Fuck You Want To Public License, Version 2,
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as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.</p>
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<h3>How to copy</h3>
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<ul>
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<li>
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On Firefox/Chromium:
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<ol>
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<li>Right-click on the page</li>
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<li>Select <i>Save Page as...</i> or <i>Save as...</i> (or simillar option)</li>
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<li>Choose file type as <i>HTML Only</i></li>
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<li>Profit!</li>
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</ol>
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</li>
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<li>
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Using git:
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<ol>
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<li><code>git clone https://codeberg.org/magmaus3/infohash2base64</code></li>
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<li>Profit!</li>
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</ol>
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</li>
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</ul>
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</form>
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<div class="result" id="decodeResult"></div>
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</div>
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</main>
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</body>
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