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/**
* GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript.
*
* Copyright (C) 2018 Giorgio Maone <giorgio@maone.net>
*
* This file is part of GNU LibreJS.
*
* GNU LibreJS 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.
*
* GNU LibreJS 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.
*
* You should have received a copy of the GNU General Public License
* along with GNU LibreJS. If not, see <http://www.gnu.org/licenses/>.
*/
/**
A tiny wrapper around extensions storage API, supporting CSV serialization for
retro-compatibility
*/
var Storage = {
ARRAY: {
async load(key) {
let array = (await browser.storage.local.get(key))[key];
return array ? new Set(array) : new Set();
},
async save(key, list) {
return await browser.storage.local.set({[key]: [...list]});
},
},
CSV: {
async load(key) {
let csv = (await browser.storage.local.get(key))[key];
return csv ? new Set(csv.split(/\s*,\s*/)) : new Set();
},
async save(key, list) {
return await browser.storage.local.set({[key]: [...list].join(",")});
}
}
};
/**
A class to hold and persist blacklists and whitelists
*/
class ListStore {
constructor(key, storage = Storage.ARRAY) {
this.key = key;
this.storage = storage;
this.items = new Set();
}
static hashItem(hash) {
return hash.startsWith("(") ? hash : `(${hash})`;
}
static urlItem(url) {
let queryPos = url.indexOf("?");
return queryPos === -1 ? url : url.substring(0, queryPos);
}
static siteItem(url) {
if (url.endsWith("/*")) return url;
try {
return `${new URL(url).origin}/*`;
} catch (e) {
return `${url}/*`;
}
}
async save() {
return await this.storage.save(this.key, this.items);
}
async load() {
try {
this.items = await this.storage.load(this.key);
} catch (e) {
console.error(e);
}
return this.items;
}
async store(item) {
let size = this.items.size;
return (size !== this.items.add(item).size) && await this.save();
}
async remove(item) {
return this.items.delete(item) && await this.save();
}
contains(item) {
return this.items.has(item);
}
}
module.exports = { ListStore, Storage };
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