#!/usr/bin/env node
// Converts .xls/.xlsx to JSON on stdout.
// Usage: node xls2json.js <filepath>
const XLSX = require(__dirname + '/node_modules/xlsx');
const path = require('path');

const file = process.argv[2];
if (!file) {
  process.stderr.write('usage: xls2json.js <file>\n');
  process.exit(1);
}

try {
  const wb = XLSX.readFile(file);
  const ws = wb.Sheets[wb.SheetNames[0]];
  const rows = XLSX.utils.sheet_to_json(ws, { header: 1, defval: '' });
  process.stdout.write(JSON.stringify(rows));
} catch (e) {
  process.stderr.write('xls2json error: ' + e.message + '\n');
  process.exit(2);
}