Function analyseArguments

valdi/vscode_debugger/src/ui/processTree/processTree.ts:66–91

(args: string)

 * Analyse the given command line arguments and extract debug port and protocol from it.
 */
export function analyseArguments(args: string) {
  const DEBUG_FLAGS_PATTERN = /--inspect(-brk)?(=((\[[0-9a-fA-F:]*\]|[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+|[a-zA-Z0-9\.]*):)?(\d+))?/;
  const DEBUG_PORT_PATTERN = /--inspect-port=(\d+)/;

  let address: string | undefined;
  let port: number | undefined;

  // match --inspect, --inspect=1234, --inspect-brk, --inspect-brk=1234
  let matches = DEBUG_FLAGS_PATTERN.exec(args);
  if (matches && matches.length >= 1) {
    if (matches.length >= 5 && matches[4]) {
      address = matches[4];
    }
    if (matches.length >= 6 && matches[5]) {
      port = parseInt(matches[5]);
    }
  }

  // a --inspect-port=1234 overrides the port
  matches = DEBUG_PORT_PATTERN.exec(args);
  if (matches && matches.length === 2) {
    port = parseInt(matches[1]);
  }

  return { address, port };
}