update-grammar.js

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License.
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/**
 * MIT License
 * 
 * Copyright (c) 2015 - present Microsoft Corporation
 * 
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * 
 */

'use strict';

var path = require('path');
var fs = require('fs');
var cson = require('cson-parser');

exports.update = function (contentPath, dest) {
    console.log('Reading from ' + contentPath);
    fs.readFile(contentPath, (_err, content) => {
        var grammar = cson.parse(content);
        let result = {
            information_for_contributors: [
                'This file is generated from ' + contentPath
            ]
        };

        let keys = ['name', 'scopeName', 'comment', 'injections', 'patterns', 'repository'];
        for (let key of keys) {
            if (grammar.hasOwnProperty(key)) {
                result[key] = grammar[key];
            }
        }

        try {
            fs.writeFileSync(dest, JSON.stringify(result, null, '\t').replace(/\n/g, '\r\n'));
            console.log('Updated ' + path.basename(dest));
        } catch (e) {
            console.error(e);
            process.exit(1);
        }
    });
};

if (path.basename(process.argv[1]) === 'update-grammar.js') {
    exports.update(process.argv[2], process.argv[3]);
}