syntax.js

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// Nano Core 2 - An adblocker
// Copyright (C) 2018-2019  Nano Core 2 contributors
//
// 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.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

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// Syntax validator

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"use strict";

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const assert = require("assert");
const esprima = require("esprima");
const fs = require("fs-extra");
const path = require("path");

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const validate_js = async (file) => {
    esprima.parse(await fs.readFile(file, "utf8"));
};

const validate_json = async (file) => {
    JSON.parse(await fs.readFile(file, "utf8"));
};

const validate_html = async (file) => {
    const name = path.parse(file).name;

    let expected;

    switch (name) {
        case "1p-filters":
            expected = "ace/ace.js";
            break;

        case "asset-viewer":
            expected = "nano-editor.js";
            break;

        case "background":
            expected = "nano-background.js";
            break;

        default:
            return;
    }

    const data = await fs.readFile(file, "utf8");

    assert(data.includes(expected));
};

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exports.validate_dir = async (dir) => {
    const files = await fs.readdir(dir);
    let tasks = [];

    for (const file of files)
        tasks.push(fs.lstat(path.resolve(dir, file)));

    tasks = await Promise.all(tasks);

    for (let i = 0; i < files.length; i++) {
        assert(!tasks[i].isSymbolicLink());

        if (tasks[i].isDirectory()) {
            await exports.validate_dir(path.resolve(dir, files[i]));
            continue;
        }

        assert(tasks[i].isFile());

        if (files[i].endsWith(".js"))
            await validate_js(path.resolve(dir, files[i]));
        else if (files[i].endsWith(".json"))
            await validate_json(path.resolve(dir, files[i]));
        else if (files[i].endsWith(".html"))
            await validate_html(path.resolve(dir, files[i]));
    }
};

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