/*
* Copyright 2008 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.benchmarks.viewer.client;
/**
* Provides information about a browser (vendor,version,operating system,etc...)
* based on user agent and other easily accessible information.
*
* This is not meant to be a "detect script" to implement browser workarounds,
* but rather a "pretty printer" for the browser information.
*
* This code is a derivation of Browser Detect v2.1.6 documentation:
* http://www.dithered.com/javascript/browser_detect/index.html license:
* http://creativecommons.org/licenses/by/1.0/ code by Chris Nott
* (chris[at]dithered[dot]com)
*
* It has been transliterated from JavaScript to Java with additional changes
* along the way.
*/
public class BrowserInfo {
/**
* Retrieves a "pretty" version of the browser version information.
*
* @param userAgent - The HTTP user agent string.
* @return A pretty-printed version of the browser including the a) vendor b)
* version c) and operating system
*/
@SuppressWarnings("unused")
public static String getBrowser(String userAgent) {
userAgent = userAgent.toLowerCase();
// browser engine name
boolean isGecko = userAgent.indexOf("gecko") != -1 && userAgent.indexOf("safari") == -1;
boolean isAppleWebKit = userAgent.indexOf("applewebkit") != -1;
// browser name
boolean isKonqueror = userAgent.indexOf("konqueror") != -1;
boolean isSafari = userAgent.indexOf("safari") != -1;
boolean isOmniweb = userAgent.indexOf("omniweb") != -1;
boolean isOpera = userAgent.indexOf("opera") != -1;
boolean isIcab = userAgent.indexOf("icab") != -1;
boolean isAol = userAgent.indexOf("aol") != -1;
boolean isIE =
userAgent.indexOf("msie") != -1 && !isOpera && (userAgent.indexOf("webtv") == -1);
boolean isMozilla = isGecko && userAgent.indexOf("gecko/") + 14 == userAgent.length();
boolean isFirefox = userAgent.indexOf("firefox/") != -1 || userAgent.indexOf("firebird/") != -1;
boolean isNS =
isGecko ? userAgent.indexOf("netscape") != -1 : userAgent.indexOf("mozilla") != -1
&& !isOpera && !isSafari && userAgent.indexOf("spoofer") == -1
&& userAgent.indexOf("compatible") == -1 && userAgent.indexOf("webtv") == -1
&& userAgent.indexOf("hotjava") == -1;
// spoofing and compatible browsers
boolean isIECompatible = userAgent.indexOf("msie") != -1 && !isIE;
boolean isNSCompatible = userAgent.indexOf("mozilla") != -1 && !isNS && !isMozilla;
// rendering engine versions
String geckoVersion =
isGecko ? userAgent.substring(userAgent.lastIndexOf("gecko/") + 6, userAgent
.lastIndexOf("gecko/") + 14) : "-1";
String equivalentMozilla = isGecko ? userAgent.substring(userAgent.indexOf("rv:") + 3) : "-1";
String appleWebKitVersion =
isAppleWebKit ? userAgent.substring(userAgent.indexOf("applewebkit/") + 12) : "-1";
// float versionMinor = parseFloat(navigator.appVersion);
String versionMinor = "";
// correct version number
if (isGecko && !isMozilla) {
versionMinor =
userAgent.substring(userAgent.indexOf("/", userAgent.indexOf("gecko/") + 6) + 1);
} else if (isMozilla) {
versionMinor = userAgent.substring(userAgent.indexOf("rv:") + 3);
} else if (isIE) {
versionMinor = userAgent.substring(userAgent.indexOf("msie ") + 5);
} else if (isKonqueror) {
versionMinor = userAgent.substring(userAgent.indexOf("konqueror/") + 10);
} else if (isSafari) {
versionMinor = userAgent.substring(userAgent.lastIndexOf("safari/") + 7);
} else if (isOmniweb) {
versionMinor = userAgent.substring(userAgent.lastIndexOf("omniweb/") + 8);
} else if (isOpera) {
versionMinor = userAgent.substring(userAgent.indexOf("opera") + 6);
} else if (isIcab) {
versionMinor = userAgent.substring(userAgent.indexOf("icab") + 5);
}
String version = getVersion(versionMinor);
// dom support
// boolean isDOM1 = (document.getElementById);
// boolean isDOM2Event = (document.addEventListener &&
// document.removeEventListener);
// css compatibility mode
// this.mode = document.compatMode ? document.compatMode : "BackCompat";
// platform
boolean isWin = userAgent.indexOf("win") != -1;
boolean isWin32 =
isWin && userAgent.indexOf("95") != -1 || userAgent.indexOf("98") != -1
|| userAgent.indexOf("nt") != -1 || userAgent.indexOf("win32") != -1
|| userAgent.indexOf("32bit") != -1 || userAgent.indexOf("xp") != -1;
boolean isMac = userAgent.indexOf("mac") != -1;
boolean isUnix =
userAgent.indexOf("unix") != -1 || userAgent.indexOf("sunos") != -1
|| userAgent.indexOf("bsd") != -1 || userAgent.indexOf("x11") != -1;
boolean isLinux = userAgent.indexOf("linux") != -1;
// specific browser shortcuts
/*
* this.isNS4x = (this.isNS && this.versionMajor == 4); this.isNS40x =
* (this.isNS4x && this.versionMinor < 4.5); this.isNS47x = (this.isNS4x &&
* this.versionMinor >= 4.7); this.isNS4up = (this.isNS && this.versionMinor
* >= 4); this.isNS6x = (this.isNS && this.versionMajor == 6); this.isNS6up
* = (this.isNS && this.versionMajor >= 6); this.isNS7x = (this.isNS &&
* this.versionMajor == 7); this.isNS7up = (this.isNS && this.versionMajor
* >= 7);
*
* this.isIE4x = (this.isIE && this.versionMajor == 4); this.isIE4up =
* (this.isIE && this.versionMajor >= 4); this.isIE5x = (this.isIE &&
* this.versionMajor == 5); this.isIE55 = (this.isIE && this.versionMinor ==
* 5.5); this.isIE5up = (this.isIE && this.versionMajor >= 5); this.isIE6x =
* (this.isIE && this.versionMajor == 6); this.isIE6up = (this.isIE &&
* this.versionMajor >= 6);
*
* this.isIE4xMac = (this.isIE4x && this.isMac);
*/
String name =
isGecko ? "Gecko" : isAppleWebKit ? "Apple WebKit" : isKonqueror ? "Konqueror" : isSafari
? "Safari" : isOpera ? "Opera" : isIE ? "IE" : isMozilla ? "Mozilla" : isFirefox
? "Firefox" : isNS ? "Netscape" : "";
name +=
" " + version + " on "
+ (isWin ? "Windows" : isMac ? "Mac" : isUnix ? "Unix" : isLinux ? "Linux" : "Unknown");
return name;
}
// Reads the version from a string which begins with a version number
// and contains additional character data
private static String getVersion(String versionPlusCruft) {
for (int index = 0; index < versionPlusCruft.length(); ++index) {
char c = versionPlusCruft.charAt(index);
if (c != '.' && !Character.isDigit(c)) {
return versionPlusCruft.substring(0, index);
}
}
return versionPlusCruft;
}
}