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infohash2base64/index.html

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init
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<!DOCTYPE html>
<html lang="en">
<head>
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<title>infohash ↔ base64</title>
init
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<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script>
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// @license http://www.wtfpl.net/txt/copying/ WTFPL
Reduce the amount of functions on the backend Instead of using separate functions for each step (hex -> bytearray -> base64 and the opposite), this commit merges the required functions into their uses.
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function infohashToBase64(infohash) {
// Converts an hex infohash into base64.
// Convert hex into an byte array
let byteArray = infohash.replace(/[^0-9a-fA-F]/g, '')
init
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.match(/[0-9a-fA-F]{2}/g);
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for(var i = 0; i<byteArray.length; i++) {
byteArray[i] = parseInt(byteArray[i], 16);
init
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}
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// Convert byteArray into base64
init
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return btoa(
String.fromCharCode.apply(
null, new Uint8Array(byteArray)
)
);
}
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function base64ToInfohash(b64) {
// Converts a base64 value into a infohash (in a hex form)
// Convert base64 into an byteArray
let binaryString = atob(b64);
let byteArray = new Uint8Array(binaryString.length);
init
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for (var i = 0; i < binaryString.length; i++) {
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byteArray[i] = binaryString.charCodeAt(i);
init
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}
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// Convert byteArray into hex values
init
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return Array.from(byteArray, function(byte) {
return ('0' + (byte & 0xFF).toString(16)).slice(-2);
}).join('');
}
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// Everything for the UI itself
// Holds the state of tabs.
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// Intended values are "encode", "decode" and "about"
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let tabOpen = "encode"
function switchTab(name) {
// 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)
url.searchParams.set("tab", name)
window.history.replaceState(null, "", url.href)
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if (name === "encode") {
document.getElementById("encode").style.display = "block"
document.getElementById("decode").style.display = "none"
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document.getElementById("about").style.display = "none"
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} else if (name === "decode") {
document.getElementById("encode").style.display = "none"
document.getElementById("decode").style.display = "block"
Add about tab, hide tabs and tabBar when js is off, and more polish.
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document.getElementById("about").style.display = "none"
} else if (name === "about") {
document.getElementById("encode").style.display = "none"
document.getElementById("decode").style.display = "none"
document.getElementById("about").style.display = "block"
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}
}
addEventListener("DOMContentLoaded", (event) => {
// Get the current query params
const urlParams = new URLSearchParams(window.location.search);
if (
urlParams.has("tab") &&
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["encode", "decode", "about"].includes(urlParams.get("tab"))
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) {
// Check if tab parameter is set up and is correct
// If not, an default value will be used
tabOpen = urlParams.get("tab")
}
switchTab(tabOpen)
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document.getElementsByClassName("tabBar")[0].style.display = "flex"
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// Show the result of the action performed before reloading
if (urlParams.get("tab") === "encode" && urlParams.has("infohashv1")) {
document.getElementById("encodeResult").innerText = infohashToBase64(urlParams.get("infohashv1"))
} else if (urlParams.get("tab") === "decode" && urlParams.has("base64value")) {
document.getElementById("decodeResult").innerText = base64ToInfohash(urlParams.get("base64value"))
}
});
Add licensing stuff (also makes the tool work with librejs)
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// @license-end
init
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</script>
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<style>
body {
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width: 100vw; height: 100vh;
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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background-color: #10101a;
color: white;
font-family: monospace;
}
main {
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background-color: #202025;
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padding: 1em;
border: 1px solid white;
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border-radius: 1em;
box-shadow: 0px 5px 15px black, 0px 1px 15px black inset;
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}
input {
color: white;
background-color: transparent;
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border: 1px solid white;
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}
label {
margin-right: 0.5rem;
}
.tab {
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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}
.result:empty { display: none;}
.result {
background-color: rgba(32, 32, 42, 0.5);
margin-top: 1em;
padding: 0.5rem;
border: 1px solid gray;
border-radius: 1em;
}
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.tab, .tabBar {
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display: none; /* Default value to keep tabs hidden when JS is not available */
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}
.button {
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flex: 1;
text-align: center;
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padding: 0.5em;
border: 1px solid white;
border-bottom: none;
transition: box-shadow 200ms ease;
}
more changes
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.leftButton {
border-radius: 1em 0em 0em 0em;
}
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.rightButton {
border-radius: 0em 1em 0em 0em;
}
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.button:hover {
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box-shadow: 0px 5px 25px black;
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}
.button:active {
background-color: rgba(255,255,255, 0.2);
}
Add about tab, hide tabs and tabBar when js is off, and more polish.
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a { color: cyan; text-decoration: none;}
Add page title, add "how to copy"
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ul > li {
margin-bottom: 1em;
}
Show the about tab when JavaScript is off
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#about, .noscript {
display: block;
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max-width: 40rem;
}
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</style>
init
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</head>
<body>
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<main>
<h1>infohash ↔ base64</h1>
<noscript>
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<div class="noscript">
<p>This tool requires JavaScript to function.</p>
<p>You can use DevTools in your browser to look at the code (it's intended to be easily readable).</p>
</div>
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</noscript>
<div class="tabBar">
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<div onclick="switchTab('encode')" class="button leftButton">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>
<div class="tab" id="encode">
<form>
<h2>Encode</h2>
<input type="hidden" name="tab" value="encode" />
<label for="infohashv1">infohash v1</label><input type="text" id="infohashv1" name="infohashv1" pattern="[0-9a-f]*" />
<input type="submit" method="get" value="convert"/>
</form>
<div class="result" id="encodeResult"></div>
</div>
<div class="tab" id="decode">
<form>
<h2>Decode</h2>
<input type="hidden" name="tab" value="decode" />
<label for="base64value">base64 value</label><input type="text" id="base64value" name="base64value" />
<input type="submit" method="get" value="convert"/>
</form>
<div class="result" id="decodeResult"></div>
</div>
Add about tab, hide tabs and tabBar when js is off, and more polish.
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<div class="tab" id="about">
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<h2>About</h2>
<p>
This tool was made to work with <a href="https://lemmy.dbzer0.com/post/1009713">an suggestion posted by @toxictenement@lemmy.dbzer0.com</a>
by <a href="https://magmaus3.eu.org">magmaus3</a>.
</p>
<p>
You can check the source code by downloading the page (everything is stored in a single html file),
by going to your browser's devtools or on <a href="https://codeberg.org/magmaus3/infohash2base64">Codeberg</a>.
</p>
Add licensing stuff (also makes the tool work with librejs)
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<h3>License</h3>
<p>Copyright © 2023 magmaus3 &lt;magmaus3@disroot.org&gt;</p>
<p>This work is free. You can redistribute it and/or modify it under the
terms of the Do What The Fuck You Want To Public License, Version 2,
as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.</p>
Add page title, add "how to copy"
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<h3>How to copy</h3>
<ul>
<li>
On Firefox/Chromium:
<ol>
<li>Right-click on the page</li>
<li>Select <i>Save Page as...</i> or <i>Save as...</i> (or simillar option)</li>
<li>Choose file type as <i>HTML Only</i></li>
<li>Profit!</li>
</ol>
</li>
<li>
Using git:
<ol>
<li><code>git clone https://codeberg.org/magmaus3/infohash2base64</code></li>
<li>Profit!</li>
</ol>
</li>
</ul>
Add about tab, hide tabs and tabBar when js is off, and more polish.
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</div>
Make stuff useable
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</main>
init
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</body>
</html>
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