lib/sources/builtin.js

// Copyright (c) 2012-2017, Matt Godbolt
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.

const props = require('../properties.js'),
    path = require('path'),
    fs = require('fs');

const sourcePath = props.get('builtin', 'sourcepath', './examples/c++');
const sourceMatch = new RegExp(props.get('builtin', 'extensionRe', '.*\\.cpp$'));
const examples = fs.readdirSync(sourcePath)
    .filter(file => file.match(sourceMatch))
    .map(file => {
        const nicename = file.replace(/\.cpp$/, '');
        return {urlpart: nicename, name: nicename.replace(/_/g, ' '), path: path.join(sourcePath, file)};
    }).sort((x, y) => x.name.localeCompare(y.name));

const byUrlpart = {};
examples.forEach(e => byUrlpart[e.urlpart] = e.path);

function load(filename) {
    const path = byUrlpart[filename];
    if (!path) {
        return Promise.reject("No such path");
    }
    return new Promise((resolve, reject) => {
        fs.readFile(path, 'utf-8', function (err, res) {
            if (err) {
                reject(err);
            } else {
                resolve({file: res});
            }
        });
    });
}

function list() {
    return Promise.resolve(examples.map(example => ({urlpart: example.urlpart, name: example.name})));
}

module.exports.load = load;
module.exports.save = null;
module.exports.list = list;
module.exports.name = "Examples";
module.exports.urlpart = "builtin";