piston/cli/commands/execute.js

//const fetch = require('node-fetch');
const fs = require('fs');
const path = require('path');
const chalk = require('chalk');

exports.command = ['execute <language> <file> [args..]'];
exports.aliases = ['run'];
exports.describe = 'Executes file with the specified runner';

exports.builder = {
    languageVersion: {
        string: true,
        desc: 'Set the version of the language to use',
        alias: ['l'],
        default: '*'
    },
    stdin: {
        boolean: true,
        desc: 'Read input from stdin and pass to executor',
        alias: ['i']
    },
    run_timeout: {
        alias: ['rt', 'r'],
        number: true,
        desc: 'Milliseconds before killing run process',
        default: 3000
    },
    compile_timeout: {
        alias: ['ct', 'c'],
        number: true,
        desc: 'Milliseconds before killing compile process',
        default: 10000,
    },
    files: {
        alias: ['f'],
        array: true,
        desc: 'Additional files to add',
    }
};

exports.handler = async function(argv) {
    const files = [...(argv.files || []),argv.file]
        .map(file_path => {
            return {
                name: path.basename(file_path),
                content: fs.readFileSync(file_path).toString()
            };
        });

    const stdin = (argv.stdin && await new Promise((resolve, _) => {
        let data = '';
        process.stdin.on('data', d => data += d);
        process.stdin.on('end', _ => resolve(data));
    })) || '';

    const request = {
        language: argv.language,
        version: argv['language-version'],
        files: files,
        args: argv.args,
        stdin,
        compile_timeout: argv.ct,
        run_timeout: argv.rt
    };

    let { data: response } = await argv.axios.post('/api/v1/execute', request);

    const step = (name, ctx) => {
        console.log(chalk.bold(`== ${name} ==`));

        if (ctx.stdout) {
            console.log(chalk.bold(`STDOUT`))
            console.log(ctx.stdout.replace(/\n/g,'\n    '))
        }

        if (ctx.stderr) {
            console.log(chalk.bold(`STDERR`))
            console.log(ctx.stderr.replace(/\n/g,'\n    '))
        }

        if (ctx.code) {
            console.log(
                chalk.bold(`Exit Code:`),
                chalk.bold[ctx.code > 0 ? 'red' : 'green'](ctx.code)
            );
        }

        if (ctx.signal) {
            console.log(
                chalk.bold(`Signal:`),
                chalk.bold.yellow(ctx.signal)
            );
        }
    }

    if (response.compile) {
        step('Compile', response.compile);
    }

    step('Run', response.run);
}