/** * This file is part of Haketilo. * * Function: Haketilo's preview of a file kept in IndexedDB. * * Copyright (C) 2022 Wojtek Kosior * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * 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 * GNU General Public License for more details. * * As additional permission under GNU GPL version 3 section 7, you * may distribute forms of that code without the copy of the GNU * GPL normally required by section 4, provided you include this * license notice and, in case of non-source distribution, a URL * through which recipients can access the Corresponding Source. * If you modify file(s) with this exception, you may extend this * exception to your version of the file(s), but you are not * obligated to do so. If you do not wish to do so, delete this * exception statement from your version. * * As a special exception to the GPL, any HTML file which merely * makes function calls to this code, and for that purpose * includes it by reference shall be deemed a separate work for * copyright law purposes. If you modify this code, you may extend * this exception to your version of the code, but you are not * obligated to do so. If you do not wish to do so, delete this * exception statement from your version. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . * * I, Wojtek Kosior, thereby promise not to sue for violation of this file's * license. Although I request that you do not make use of this code in a * proprietary program, I am not going to enforce this in court. */ #IMPORT common/indexeddb.js AS haketilodb #FROM html/DOM_helpers.js IMPORT by_id const error_msg = by_id("error_msg"), info_msg = by_id("info_msg"); function error(msg) { info_msg.remove(); error_msg.classList.remove("hide"); error_msg.innerText = msg; } async function show_preview(hash_key) { const db = await haketilodb.get(); const file = await haketilodb.idb_get(db.transaction("file"), "file", hash_key); if (file === undefined) { error("Couldn't find file in Haketilo's internal database :("); } else { const blobby_opts = {type: "text/plain;charset=UTF-8"}; const blobby = new Blob([file.contents], blobby_opts); location.replace(URL.createObjectURL(blobby)); } } const match = /^[^#]*#(.*)$/.exec(document.URL); if (!match) { error("Bad URL :("); } else { const hash_key = match[1]; show_preview(hash_key); }