@yinyinfurong_zmr/dbc-can/dist/filesystem/index.cjs.js

A general purpose CAN (Controller Area Network) toolbox with support for .dbc file parsing, CAN message decoding, and more

'use strict';

var fs = require('fs');
var path = require('path');

/**
 * Determines if the containing filepath has the correct extension
 *
 * @param file Filepath
 * @param ext File extension to check against
 */
const validateFileExtension = (file, ext) => {
    const fileExt = path.extname(file);
    if (fileExt !== ext) {
        throw new Error(`Function expected a file extension of '.dbc', got ${fileExt}`);
    }
};

/**
 * Utility function for Node that allows you to read in a dbc file and output a raw string that can be loaded into
 * the Dbc classes .load function.
 * @param file File to unload
 */
const dbcReader = (file) => {
    validateFileExtension(file, '.dbc');
    return fs.readFileSync(file, { encoding: 'ascii' });
};

/**
 * Utility function for writing a raw dbc string to a .dbc file
 * @param file location and name of the dbc file to write to
 * @param fileContent The DBC content that will be loaded into the file
 */
const dbcWriter = (file, fileContent) => {
    validateFileExtension(file, '.dbc');
    fs.writeFileSync(file, '', { flag: 'w+' });
    const lines = fileContent.split('\n');
    for (const line of lines) {
        fs.writeFileSync(file, `${line}\n`, { flag: 'a+' });
    }
};

exports.dbcReader = dbcReader;
exports.dbcWriter = dbcWriter;