97 lines
2.9 KiB
JavaScript
97 lines
2.9 KiB
JavaScript
const express = require('express');
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const path = require('path');
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const yargs = require('yargs/yargs');
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const { hideBin } = require('yargs/helpers');
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const koffi = require('koffi');
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require('expose-gc');
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// Parse command line arguments
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const argv = yargs(hideBin(process.argv))
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.usage('Usage: $0 [options]')
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.option('verbose', {
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alias: 'v',
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type: 'boolean',
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description: 'Run with verbose logging'
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})
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.option('port', {
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alias: 'p',
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type: 'number',
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description: 'Port to run the server on',
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default: 3000
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})
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.option('host', {
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type: 'string',
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description: 'Host to run the server on',
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default: 'localhost'
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})
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.help()
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.alias('help', 'h')
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.version()
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.argv;
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const app = express();
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app.use(express.json());
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app.use(express.static('public'));
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let nasalLib;
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try {
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// First load the library
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const lib = koffi.load(path.join(__dirname, '../module/libnasal-web.dylib'));
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// Then declare the functions explicitly
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nasalLib = {
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nasal_init: lib.func('nasal_init', 'void*', []),
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nasal_cleanup: lib.func('nasal_cleanup', 'void', ['void*']),
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nasal_eval: lib.func('nasal_eval', 'const char*', ['void*', 'const char*', 'int']),
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nasal_get_error: lib.func('nasal_get_error', 'const char*', ['void*'])
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};
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} catch (err) {
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console.error('Failed to load nasal library:', err);
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process.exit(1);
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}
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app.post('/eval', (req, res) => {
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const { code, showTime = false } = req.body;
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if (!code) {
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return res.status(400).json({ error: 'No code provided' });
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}
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if (argv.verbose) {
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console.log('Received code evaluation request:', code);
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console.log('Show time:', showTime);
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}
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const ctx = nasalLib.nasal_init();
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try {
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const result = nasalLib.nasal_eval(ctx, code, showTime ? 1 : 0);
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const error = nasalLib.nasal_get_error(ctx);
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if (error && error !== 'null') {
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if (argv.verbose) console.log('Nasal error:', error);
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res.json({ error: error });
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} else if (result && result.trim() !== '') {
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if (argv.verbose) console.log('Nasal output:', result);
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res.json({ result: result });
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} else {
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if (argv.verbose) console.log('No output or error returned');
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res.json({ error: 'No output or error returned' });
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}
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} catch (err) {
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if (argv.verbose) console.error('Server error:', err);
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res.status(500).json({ error: err.message });
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} finally {
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if (argv.verbose) console.log('Cleaning up Nasal context');
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nasalLib.nasal_cleanup(ctx);
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global.gc()
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}
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});
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const PORT = argv.port || 3000;
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app.listen(PORT, () => {
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console.log(`Server running on port ${PORT}`);
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console.log(`Visit http://localhost:${PORT} to use the Nasal interpreter`);
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if (argv.verbose) console.log('Verbose logging enabled');
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});
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