BrowserDetect (Coffeescript)

BrowserDetect.coffee

# Original BrowserDetect.js: @Teevio (http://teev.io/blog/text/13423292)
# Original idea: @rogie (http://rog.ie/post/9089341529/html5boilerplatejs)
# CoffeeScript implementation: @EtienneLem
class BrowserDetect

  @init: ->
    browser = @searchString(@dataBrowser) || "An unknown browser"
    version = @searchVersion(navigator.userAgent) || @searchVersion(navigator.appVersion) || "An unknown version"
    os = @searchString(@dataOS) || "An unknown OS"

    html = document.documentElement
    html.setAttribute 'data-browser', browser
    html.setAttribute 'data-version', version
    html.setAttribute 'data-os', os

  @searchString: (data) ->
    for obj in data
      string = obj.string
      prop = obj.prop
      versionSearchString = obj.versionSearch || obj.identity

      if string && string.indexOf(obj.subString) >= 0
        @versionSearchString = versionSearchString
        return obj.identity
      else if prop
        @versionSearchString = versionSearchString
        return obj.identity

  @searchVersion: (dataString) ->
    index = dataString.indexOf @versionSearchString
    return if index == -1
    return parseFloat(dataString.substring(index+@versionSearchString.length+1))

  @dataBrowser: [
    string: navigator.userAgent
    subString: "Chrome"
    identity: "Chrome"
  ,
    string: navigator.userAgent
    subString: "OmniWeb"
    versionSearch: "OmniWeb/"
    identity: "OmniWeb"
  ,
    string: navigator.vendor
    subString: "Apple"
    identity: "Safari"
    versionSearch: "Version"
  ,
    prop: window.opera
    identity: "Opera"
    versionSearch: "Version"
  ,
    string: navigator.vendor
    subString: "iCab"
    identity: "iCab"
  ,
    string: navigator.vendor
    subString: "KDE"
    identity: "Konqueror"
  ,
    string: navigator.userAgent
    subString: "Firefox"
    identity: "Firefox"
  ,
    string: navigator.vendor
    subString: "Camino"
    identity: "Camino"
  ,
    string: navigator.userAgent
    subString: "Netscape"
    identity: "Netscape"
  ,
    string: navigator.userAgent
    subString: "MSIE"
    identity: "Explorer"
    versionSearch: "MSIE"
  ,
    string: navigator.userAgent
    subString: "Gecko"
    identity: "Mozilla"
    versionSearch: "rv"
  ,
    string: navigator.userAgent
    subString: "Mozilla"
    identity: "Netscape"
    versionSearch: "Mozilla"
  ]

  @dataOS: [
    string: navigator.platform
    subString: "Win"
    identity: "Windows"
  ,
    string: navigator.platform
    subString: "Mac"
    identity: "Mac"
  ,
    string: navigator.userAgent
    subString: "iPhone"
    identity: "iPhone/iPod"
  ,
    string: navigator.platform
    subString: "Linux"
    identity: "Linux"
  ]


BrowserDetect.init()