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/**
* SPDX-License-Identifier: CC0-1.0
*
* Library to convert youtube.com URLs to yewtu.be URLs.
*
* Copyright (C) 2021 Wojtek Kosior <koszko@koszko.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the CC0 1.0 Universal License as published by
* the Creative Commons Corporation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* CC0 1.0 Universal License for more details.
*/
function decode_query_options(url)
{
const query_options = {};
const match = /^[^?]*\?(.*)/.exec(url);
if (!match)
return query_options;
for (const opt of match[1].split("&")) {
const [key, val] =
/^([^=]*)=?(.*)/.exec(opt).splice(1, 2).map(decodeURIComponent);
query_options[key] = val;
}
return query_options;
}
function encode_query_options(query_options)
{
return Object.entries(query_options)
.map(ar => ar.map(encodeURIComponent).join("=")).join("&");
}
function make_yewtube_url(youtube_url)
{
const query_options = decode_query_options(youtube_url);
let endpoint = "";
const match = /^(?:(?:https?:)?\/\/)?[^/]*\/([^?]*)/.exec(youtube_url);
if (match)
endpoint = match[1];
if (/^embed\//.test(query_options.v))
endpoint = query_options.v;
if (/^embed\/.+/.test(endpoint))
delete query_options.v;
const encoded_options = encode_query_options(query_options);
return `https://yewtu.be/${endpoint}?${encoded_options}`;
}
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