html5 validator

html5-valid.js

// HTML5 Validator using http://about.validator.nu/#api
exports.validate = function(data, done) {
  var url = data.url
  var html = data.html
  if (!url && !html) return done(new Error("You forget a URL for the validator"))
  
  if (html) return complete(html)
  
  utils.printTitle("HTML5 Validator")
  request(url, function(err, res, body) {
      var statusCode = res.statusCode
      if (!err && statusCode === 200) {
        complete(body)
      } else {
        console.log("Status Code: " + statusCode)
        console.log("Error:" + err)
      }
  })
  
  function complete(body) {
    validate(body, function(err, data) {
      var output = ""
      if (err) {
        console.log("Error: " + err.message)
      } else {
        output = formatWarnings(data.warnings)
        console.log(output)
        console.log("\nValidation complete")
      }
      done(null, {results: output, warnings: data.warnings, html: data.html})
    })
  }
  
  function validate(html, cb) {
    var validatorOpts = {out: "json"}
    var validatorURL = "http://html5.validator.nu/?" + qs.stringify(validatorOpts)
    console.log("Hitting: "+ validatorURL + "\n")
    request.post({url: validatorURL, headers: {"Content-type": "text/html"}, body: html}, function(err, res, body) {
      if (err) return cb(err)
      var data = JSON.parse(body)
      var warnings = data.messages || []
      cb(null, {warnings: warnings, html: html})
    })
  }
  
  function formatWarnings(warnings) {
    var len = warnings.length
    var text = "Found " + len + " warnings\n-----------------------"
    for (var i = 0; i < len; i++) {
      text += "Line " + warnings[i].lastLine + ": " + warnings[i].message + "\n"
    }  
    return text  
  }
  
}