Error pages list

#!/usr/bin/env node const fs = require('fs'); const path = require('path'); const yargs = require('yargs'); const options = yargs .usage('Usage: -c -d ') .option("c", {alias: "config", describe: "config file path", type: "string", demandOption: true}) .option("o", {alias: "out", describe: "output directory path", type: "string", demandOption: true}) .option("i", {alias: "index", describe: "generate index page", type: "boolean"}) .argv; const configFile = options.config; const outDir = options.out; const generateIndexPage = options.index; const generated = {}; try { // Make sure that config file exists if (!fs.existsSync(configFile)) { throw new Error(`Config file "${configFile}" was not found`); } // Create output directory (if needed) if (!fs.existsSync(outDir)) { fs.mkdirSync(outDir); } // Read JSON config file and parse into object const configContent = JSON.parse(fs.readFileSync(configFile)); // Loop over all defined templates in configuration file configContent.templates.forEach((templateConfig) => { // Make sure that template layout file exists if (!fs.existsSync(templateConfig.path)) { throw new Error(`Template "${templateConfig.name}" was not found in "${templateConfig.path}"`); } // Read layout content into memory prepare output directory for template const layoutContent = String(fs.readFileSync(templateConfig.path)); const templateOutDir = path.join(outDir, templateConfig.name); if (!fs.existsSync(templateOutDir)) { fs.mkdirSync(templateOutDir); } console.info(`Use template "${templateConfig.name}" located in "${templateConfig.path}"`); // Loop over all pages configContent.pages.forEach((pageConfig) => { let outFileName = pageConfig.code + "." + configContent.output.file_extension, outPath = path.join(templateOutDir, outFileName); console.info(` [${templateConfig.name}:${pageConfig.code}] Output: ${outPath}`); // Make replaces let result = layoutContent .replace(/{{\s?code\s?}}/g, pageConfig.code) .replace(/{{\s?message\s?}}/g, pageConfig.message) .replace(/{{\s?description\s?}}/g, pageConfig.description); // And write into result file fs.writeFileSync(outPath, result, { encoding: "utf8", flag: "w+", mode: 0o644 }); if (!generated[templateConfig.name]) { generated[templateConfig.name] = []; } generated[templateConfig.name].push({ code: pageConfig.code, message: pageConfig.message, description: pageConfig.description, path: path.join(templateConfig.name, outFileName), }) }); }) // Generate index page for the generated content if (generateIndexPage === true) { const indexPageFilePath = path.join(outDir, 'index.html'); let content = ` Error pages list

\n`; Object.keys(generated).forEach(function(templateName) { content += `

Template name: ` + templateName + `

\n

${properties.code}: ${properties.message}

\n`; }); content += `

`; fs.writeFileSync(indexPageFilePath, content, { encoding: "utf8", flag: "w+", mode: 0o644 }); } } catch (err) { console.error(err); process.exit(1); }