saturn-core/language-module/python/script/header.js

saturn core

saturn.python = (python_path)=> new Promise((resolve)=> {
    let _spawn = require('child_process').spawn;
    if (process.platform == 'win32')
        _spawn = require('cross-spawn');

    let config = require('path').resolve(require('path').dirname(__filename), 'config.json');
    if (require('fs').existsSync(config)) config = JSON.parse(require('fs').readFileSync(config, 'utf-8'));
    else config = {};
    if (config.python) config.python = config.python.replace('~', process.env.HOME || process.env.USERPROFILE);

    let _argv = ['-u', python_path].concat(process.argv);

    let term = _spawn(config.python ? config.python : 'python', _argv, {cwd: process.cwd()});

    process.on('SIGINT', () => {
        term.kill();
    });

    term.stdout.on('data', (data)=> {
        process.stdout.write(data);
    });

    term.stderr.on('data', (data)=> {
        process.stderr.write(data);
    });

    term.on('close', (code) => {
        if (code !== 0) throw new Error('Python Error');
        let varJSON = require('path').resolve(require('path').dirname(__filename), 'variable.json');
        if (require('fs').existsSync(varJSON)) {
            let v = JSON.parse(require('fs').readFileSync(varJSON, 'utf-8'));
            for (let key in v)
                global[key] = v[key];
        }
        resolve();
    });
});