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chore: remove std dep

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This commit is contained in:
Skillz4Killz
2021-11-23 09:19:00 +00:00
committed by GitHub
parent 45cca372f2
commit a3803eee75
1 changed files with 104 additions and 2 deletions
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106
src/util/urlToBase64.ts
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@@ -1,5 +1,3 @@
import { encode } from "https://deno.land/std@0.115.1/encoding/base64.ts";
/** Converts a url to base 64. Useful for example, uploading/creating server emojis. */
export async function urlToBase64(url: string) {
const buffer = await fetch(url).then((res) => res.arrayBuffer());
@@ -7,3 +5,107 @@ export async function urlToBase64(url: string) {
const type = url.substring(url.lastIndexOf(".") + 1);
return `data:image/${type};base64,${imageStr}`;
}
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
const base64abc = [
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z",
"a",
"b",
"c",
"d",
"e",
"f",
"g",
"h",
"i",
"j",
"k",
"l",
"m",
"n",
"o",
"p",
"q",
"r",
"s",
"t",
"u",
"v",
"w",
"x",
"y",
"z",
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"+",
"/",
];
/**
* CREDIT: https://gist.github.com/enepomnyaschih/72c423f727d395eeaa09697058238727
* Encodes a given Uint8Array, ArrayBuffer or string into RFC4648 base64 representation
* @param data
*/
export function encode(data: ArrayBuffer | string): string {
const uint8 = typeof data === "string"
? new TextEncoder().encode(data)
: data instanceof Uint8Array
? data
: new Uint8Array(data);
let result = "",
i;
const l = uint8.length;
for (i = 2; i < l; i += 3) {
result += base64abc[uint8[i - 2] >> 2];
result += base64abc[((uint8[i - 2] & 0x03) << 4) | (uint8[i - 1] >> 4)];
result += base64abc[((uint8[i - 1] & 0x0f) << 2) | (uint8[i] >> 6)];
result += base64abc[uint8[i] & 0x3f];
}
if (i === l + 1) {
// 1 octet yet to write
result += base64abc[uint8[i - 2] >> 2];
result += base64abc[(uint8[i - 2] & 0x03) << 4];
result += "==";
}
if (i === l) {
// 2 octets yet to write
result += base64abc[uint8[i - 2] >> 2];
result += base64abc[((uint8[i - 2] & 0x03) << 4) | (uint8[i - 1] >> 4)];
result += base64abc[(uint8[i - 1] & 0x0f) << 2];
result += "=";
}
return result;
}