convert.js

const fs = require('fs');

/*
** Stand alone nodejs script to compile a GlowScript program and output the HTML
*/

global.window = {}
global.RS = require('./package/RScompiler.3.2.min.js')
global.RapydScript = RS.RapydScript; // script assumes RapydScript is gobal for some reason
//debugger;

function inlineHTML(source) {
 // This function is used to inline the source code in the HTML
 // It replaces newlines with <br> and escapes double quotes
 // source = "Web VPython 3.2\n\n\nball=sphere()"

 var header = {
 "version": "3.2",
 "lang": "vpython",
 "nodictionary": false,
 "source": source,
 "ok": "3.2",
 "unpackaged": false,
 "isCurrent": true
 }

 var embedHTML = '' // Will be an ampty string if there is a compile error
 var embedScript = window.glowscript_compile(header.source,
 {lang: header.lang, version: header.version.substr(0,3), 
 run: false, nodictionary: header.nodictionary})
 // console.log('ide 1343', embedScript)
 var divid = "glowscript"
 var main
 var v = Number(header.version.substr(0,3))
 if (v >= 2.9) main = '__main__()' // Starting August 2019, no longer using Streamine
 var remove = header.version==='0.3' ? '' : '.removeAttr("id")'

 embedScript = ";(function() {" + embedScript + '\n;$(function(){ window.__context = { glowscript_container: $("#' + divid + '")'+remove+' }; '+main+' })})()'
 embedScript = embedScript.replace("</", "<\/") // escape anything that could be a close script tag... hopefully this sequence only occurs in strings!
 var verdir = "bef1.1"
 if (v == 1.1) verdir = "1.1"
 else if (v >= 2.2) verdir = "2.1"
 else verdir = header.version.substr(0,3)
 var runner = ''
 var exporturl = "https://www.glowscript.org/"
 if (v >= 2.5 && v < 3.0) exporturl = "https://s3.amazonaws.com/glowscript/"
 // Note: some already exported 3.0 programs contain references to s3.amazonaws.com
 if (header.lang == 'vpython') 
 runner = '<script type="text/javascript" src="'+exporturl+'package/RSrun.' + header.version + '.min.js"></script>\n'
 embedHTML = ( // embedHTML is a var introduced above to make it easy for downloadHTML
 '<div id="' + divid + '" class="glowscript">\n' + 
 '<meta http-equiv="Content-Type" content="text/html; charset=utf-8">\n' + 
 '<link type="text/css" href="'+exporturl+'css/redmond/' + verdir + '/jquery-ui.custom.css" rel="stylesheet" />\n' + 
 '<link type="text/css" href="'+exporturl+'css/ide.css" rel="stylesheet" />\n' + 
 '<script type="text/javascript" src="'+exporturl+'lib/jquery/' + verdir + '/jquery.min.js"></script>\n' + 
 '<script type="text/javascript" src="'+exporturl+'lib/jquery/' + verdir + '/jquery-ui.custom.min.js"></script>\n' + 
 '<script type="text/javascript" src="'+exporturl+'package/glow.' + header.version + '.min.js"></script>\n' + 
 runner +
 '<script type="text/javascript"><!--//--><![CDATA[//><!--\n\n// START JAVASCRIPT\n' + 
 embedScript + '\n// END JAVASCRIPT\n' + 
 '\n//--><!]]></script>' + 
 '\n</div>');

 return embedHTML
}

function doCheck(source) {
 // This function checks the source code and returns an object with the result
 var result = {ok: true, message: '', html: ''};
 try {
 var html = inlineHTML(source);
 result.html = html;
 } catch (e) {
 result.ok = false;
 result.message = e.message;
 }
 return result;
}

const filePath = process.argv[2];
if (!filePath) {
 console.error('Usage: node convert.js <path_to_python_file>');
 process.exit(1);
}

fs.readFile(filePath, 'utf8', (err, source) => {
 if (err) {
 console.error(`Error reading file: ${err}`);
 process.exit(1);
 }

 const result = doCheck(source);

 if (result.ok) {
 console.log(result.html);
 } else {
 console.error(result.message);
 process.exit(1);
 }
});