src/zepto-detect.js

//     Zepto.js
//     (c) 2010-2016 Thomas Fuchs
//     Zepto.js may be freely distributed under the MIT license.
// https://github.com/madrobby/zepto/blob/601372ac4e3f98d502c707bf841589fbc48a3a7d/src/detect.js

  function detect(ua, platform){
    var os = this.os = {}, browser = this.browser = {},
      webkit = ua.match(/Web[kK]it[\/]{0,1}([\d.]+)/),
      android = ua.match(/(Android);?[\s\/]+([\d.]+)?/),
      osx = !!ua.match(/\(Macintosh\; Intel /),
      ipad = ua.match(/(iPad).*OS\s([\d_]+)/),
      ipod = ua.match(/(iPod)(.*OS\s([\d_]+))?/),
      iphone = !ipad && ua.match(/(iPhone\sOS)\s([\d_]+)/),
      webos = ua.match(/(webOS|hpwOS)[\s\/]([\d.]+)/),
      win = /Win\d{2}|Windows/.test(platform),
      wp = ua.match(/Windows Phone ([\d.]+)/),
      touchpad = webos && ua.match(/TouchPad/),
      kindle = ua.match(/Kindle\/([\d.]+)/),
      silk = ua.match(/Silk\/([\d._]+)/),
      blackberry = ua.match(/(BlackBerry).*Version\/([\d.]+)/),
      bb10 = ua.match(/(BB10).*Version\/([\d.]+)/),
      rimtabletos = ua.match(/(RIM\sTablet\sOS)\s([\d.]+)/),
      playbook = ua.match(/PlayBook/),
      chrome = ua.match(/Chrome\/([\d.]+)/) || ua.match(/CriOS\/([\d.]+)/),
      firefox = ua.match(/Firefox\/([\d.]+)/),
      firefoxos = ua.match(/\((?:Mobile|Tablet); rv:([\d.]+)\).*Firefox\/[\d.]+/),
      ie = ua.match(/MSIE\s([\d.]+)/) || ua.match(/Trident\/[\d](?=[^\?]+).*rv:([0-9.].)/),
      webview = !chrome && ua.match(/(iPhone|iPod|iPad).*AppleWebKit(?!.*Safari)/),
      safari = webview || ua.match(/Version\/([\d.]+)([^S](Safari)|[^M]*(Mobile)[^S]*(Safari))/)

    // Todo: clean this up with a better OS/browser seperation:
    // - discern (more) between multiple browsers on android
    // - decide if kindle fire in silk mode is android or not
    // - Firefox on Android doesn't specify the Android version
    // - possibly devide in os, device and browser hashes

    if (browser.webkit = !!webkit) browser.version = webkit[1]

    if (android) os.android = true, os.version = android[2]
    if (iphone && !ipod) os.ios = os.iphone = true, os.version = iphone[2].replace(/_/g, '.')
    if (ipad) os.ios = os.ipad = true, os.version = ipad[2].replace(/_/g, '.')
    if (ipod) os.ios = os.ipod = true, os.version = ipod[3] ? ipod[3].replace(/_/g, '.') : null
    if (wp) os.wp = true, os.version = wp[1]
    if (webos) os.webos = true, os.version = webos[2]
    if (touchpad) os.touchpad = true
    if (blackberry) os.blackberry = true, os.version = blackberry[2]
    if (bb10) os.bb10 = true, os.version = bb10[2]
    if (rimtabletos) os.rimtabletos = true, os.version = rimtabletos[2]
    if (playbook) browser.playbook = true
    if (kindle) os.kindle = true, os.version = kindle[1]
    if (silk) browser.silk = true, browser.version = silk[1]
    if (!silk && os.android && ua.match(/Kindle Fire/)) browser.silk = true
    if (chrome) browser.chrome = true, browser.version = chrome[1]
    if (firefox) browser.firefox = true, browser.version = firefox[1]
    if (firefoxos) os.firefoxos = true, os.version = firefoxos[1]
    if (ie) browser.ie = true, browser.version = ie[1]
    if (safari && (osx || os.ios || win)) {
      browser.safari = true
      if (!os.ios) browser.version = safari[1]
    }
    if (webview) browser.webview = true

    os.tablet = !!(ipad || playbook || (android && !ua.match(/Mobile/)) ||
      (firefox && ua.match(/Tablet/)) || (ie && !ua.match(/Phone/) && ua.match(/Touch/)))
    os.phone  = !!(!os.tablet && !os.ipod && (android || iphone || webos || blackberry || bb10 ||
      (chrome && ua.match(/Android/)) || (chrome && ua.match(/CriOS\/([\d.]+)/)) ||
      (firefox && ua.match(/Mobile/)) || (ie && ua.match(/Touch/))))
  }

export default detect;