Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Compatibility |
|
| 6.0;6 |
1 | /* | |
2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net | |
3 | * Copyright (C) 2003-2008 Frederico Caldeira Knabben | |
4 | * | |
5 | * == BEGIN LICENSE == | |
6 | * | |
7 | * Licensed under the terms of any of the following licenses at your | |
8 | * choice: | |
9 | * | |
10 | * - GNU General Public License Version 2 or later (the "GPL") | |
11 | * http://www.gnu.org/licenses/gpl.html | |
12 | * | |
13 | * - GNU Lesser General Public License Version 2.1 or later (the "LGPL") | |
14 | * http://www.gnu.org/licenses/lgpl.html | |
15 | * | |
16 | * - Mozilla Public License Version 1.1 or later (the "MPL") | |
17 | * http://www.mozilla.org/MPL/MPL-1.1.html | |
18 | * | |
19 | * == END LICENSE == | |
20 | */ | |
21 | package net.fckeditor.tool; | |
22 | ||
23 | import java.util.regex.Matcher; | |
24 | import java.util.regex.Pattern; | |
25 | ||
26 | import javax.servlet.http.HttpServletRequest; | |
27 | ||
28 | /** | |
29 | * Compatibility check. | |
30 | * | |
31 | * @version $Id: Compatibility.java 2134 2008-06-25 08:36:32Z th-schwarz $ | |
32 | */ | |
33 | 0 | public class Compatibility { |
34 | ||
35 | /** | |
36 | * Checks if a browser's user agent string is compatible for the FCKeditor. | |
37 | * | |
38 | * @param userAgentString | |
39 | * @return <code>true</code> if compatible otherwise <code>false</code> | |
40 | */ | |
41 | public static boolean check(final String userAgentString) { | |
42 | 18 | if (Utils.isEmpty(userAgentString)) |
43 | 0 | return false; |
44 | ||
45 | 18 | String userAgentStr = userAgentString.toLowerCase(); |
46 | ||
47 | // IE 5.5+, check special keys like 'Opera' and 'mac', because there are some | |
48 | // other browsers, containing 'MSIE' in there agent string! | |
49 | 18 | if (userAgentStr.indexOf("opera") < 0 && userAgentStr.indexOf("mac") < 0) { |
50 | 9 | if (getBrowserVersion(userAgentStr, ".*msie ([\\d]+.[\\d]+).*") >= 5.5f) |
51 | 4 | return true; |
52 | } | |
53 | ||
54 | // for all gecko based browsers | |
55 | 14 | if (getBrowserVersion(userAgentStr, ".*rv:([\\d]+.[\\d]+).*") > 1.7f) |
56 | 4 | return true; |
57 | ||
58 | // Opera 9.5+ | |
59 | 10 | if (getBrowserVersion(userAgentStr, "opera/([\\d]+.[\\d]+).*") >= 9.5f |
60 | || getBrowserVersion(userAgentStr, ".*opera ([\\d]+.[\\d]+)") >= 9.5f) | |
61 | 2 | return true; |
62 | ||
63 | // Safari 3+ | |
64 | 8 | if (getBrowserVersion(userAgentStr, ".*applewebkit/([\\d]+).*") >= 522f) |
65 | 3 | return true; |
66 | ||
67 | 5 | return false; |
68 | } | |
69 | ||
70 | /** | |
71 | * Just a wrapper to {@link #check(String)}. | |
72 | * | |
73 | * @param request | |
74 | */ | |
75 | public static boolean isCompatibleBrowser(final HttpServletRequest request) { | |
76 | 0 | return (request == null) ? false : check(request.getHeader("user-agent")); |
77 | } | |
78 | ||
79 | /** | |
80 | * Helper method to get the browser version from 'userAgent' with regex. The | |
81 | * first matching group has to be the version number! | |
82 | * | |
83 | * @param userAgent | |
84 | * @param regex | |
85 | * @return The browser version, or -1f if version can't be determined. | |
86 | */ | |
87 | private static float getBrowserVersion(final String userAgent, final String regex) { | |
88 | 50 | Pattern pattern = Pattern.compile(regex); |
89 | 50 | Matcher matcher = pattern.matcher(userAgent); |
90 | 50 | if (matcher.matches()) { |
91 | try { | |
92 | 17 | return Float.parseFloat(matcher.group(1)); |
93 | 0 | } catch (NumberFormatException e) { |
94 | 0 | return -1f; |
95 | } | |
96 | } | |
97 | 33 | return -1f; |
98 | } | |
99 | ||
100 | } |