Read XML stream

#!/usr/bin/env node
let Parser = require('node-xml-stream');
let fs = require('fs');

if(process.argv.length != 3) {
  console.log('usage:', process.argv[1], '[filename]');
  process.exit(-1)
}
const filename = process.argv[2];

let parser = new Parser();

// <tag attr="attrValue">
parser.on('opentag', (name, attrs) => {
  // name = 'tag'
  // attrs = { attr: 'attrValue' }
});

// </tag>
parser.on('closetag', name => {
})

// <tag>TEXT</tag>
parser.on('text', text => {
  // text = 'TEXT'
});

// <[[CDATA['data']]>
parser.on('cdata', cdata => {
  // cdata = 'data'
});

// <?xml version="1.0"?>
parser.on('instruction', (name, attrs) => {
  // name = 'xml'
  // attrs = { version: '1.0' }
});

// Only stream-errors are emitted.
parser.on('error', err => {
  // Handle a parsing error
  console.log(err)
});

parser.on('finish', () => {
  // Stream is completed
  console.log('finished parsing')
});

// Pipe a stream to the parser
let stream = fs.createReadStream(filename);

stream.pipe(parser);

console.log('parsing...')