From ba1e6824e98c52e867d92cfdcb2a6d2a614fd67f Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Wed, 29 Dec 2021 18:05:08 +0100 Subject: refactor yewtu.be URL generation into a js library --- content/syewtube_urls/index.json | 6 ++++ content/syewtube_urls/yewtube_urls.js | 57 +++++++++++++++++++++++++++++++++++ 2 files changed, 63 insertions(+) create mode 100644 content/syewtube_urls/index.json create mode 100644 content/syewtube_urls/yewtube_urls.js (limited to 'content/syewtube_urls') diff --git a/content/syewtube_urls/index.json b/content/syewtube_urls/index.json new file mode 100644 index 0000000..df8330d --- /dev/null +++ b/content/syewtube_urls/index.json @@ -0,0 +1,6 @@ +{ +"type" : "script", +"name" : "youtube.com_2_yewtu.be_URL_converter", +"sha256" : "ae2abac001a7256f4b4a66846264470b2898aa736a55f91022017ce7634dd1ae", +"location" : "yewtube_urls.js" +} diff --git a/content/syewtube_urls/yewtube_urls.js b/content/syewtube_urls/yewtube_urls.js new file mode 100644 index 0000000..b013132 --- /dev/null +++ b/content/syewtube_urls/yewtube_urls.js @@ -0,0 +1,57 @@ +/** + * Copyright (C) 2021, Wojtek Kosior + * + * 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. + * Available under the terms of Creative Commons Zero. + */ + +/* Library to convert youtube.com URLs to yewtu.be URLs. */ + +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}`; +} -- cgit v1.2.3