qrcode/lib/renderer/terminal.js

QRCode / 2d Barcode api with both server side and client side support using canvas

// var Utils = require('./utils')

exports.render = function (qrData, options, cb) {
  var size = qrData.modules.size
  var data = qrData.modules.data

  // var opts = Utils.getOptions(options)

  // use same scheme as https://github.com/gtanner/qrcode-terminal because it actually works! =)
  var black = '\x1b[40m  \x1b[0m'
  var white = '\x1b[47m  \x1b[0m'

  var output = ''
  var hMargin = Array(size + 3).join(white)
  var vMargin = Array(2).join(white)

  output += hMargin + '\n'
  for (var i = 0; i < size; ++i) {
    output += white
    for (var j = 0; j < size; j++) {
      // var topModule = data[i * size + j]
      // var bottomModule = data[(i + 1) * size + j]

      output += data[i * size + j] ? black : white// getBlockChar(topModule, bottomModule)
    }
    // output += white+'\n'
    output += vMargin + '\n'
  }

  output += hMargin + '\n'

  if (typeof cb === 'function') {
    cb(null, output)
  }

  return output
}
/*
exports.renderToFile = function renderToFile (path, qrData, options, cb) {
  if (typeof cb === 'undefined') {
    cb = options
    options = undefined
  }

  var fs = require('fs')
  var utf8 = exports.render(qrData, options)
  fs.writeFile(path, utf8, cb)
}
*/