ifc-language-server/node_modules/cross-spawn/lib/util/readShebang.js
Ryan Schultz 8afacf268a Implemented a working Language Server Protocol (LSP) for IFC files with:
- Hover provider showing entity information and type
- Go-to-definition (F12) for entity references
- Basic IFC file validation (ISO-10303-21 header check)
- Entity parsing with regex-based detection
- Proper CommonJS module system (avoiding ES module issues)

This replaces the broken baseline from ifc-developer-tools which had:
- Non-functional ES module configuration
- Circular dependency issues
- Parser crashes
- Non-working PositionVisitor

Built on Microsoft's LSP example template for a clean, maintainable foundation.

Next: Add hierarchical entity dependency tree in hover tooltip."
2025-12-07 10:20:07 -06:00

23 lines
549 B
JavaScript

'use strict';
const fs = require('fs');
const shebangCommand = require('shebang-command');
function readShebang(command) {
// Read the first 150 bytes from the file
const size = 150;
const buffer = Buffer.alloc(size);
let fd;
try {
fd = fs.openSync(command, 'r');
fs.readSync(fd, buffer, 0, size, 0);
fs.closeSync(fd);
} catch (e) { /* Empty */ }
// Attempt to extract shebang (null is returned if not a shebang)
return shebangCommand(buffer.toString());
}
module.exports = readShebang;