From ec0123208d4b9a6d7bf07bb5ba44354623242cd5 Mon Sep 17 00:00:00 2001
From: nicolasconnault <nicolasconnault>
Date: Tue, 10 Feb 2009 15:33:25 +0000
Subject: [PATCH] MDL-18188 Added a new function with matching unit tests,
 following Sam's comment in the tracker

---
 lib/moodlelib.php                | 33 ++++++++++++++++++++++++++++++++
 lib/simpletest/testmoodlelib.php | 30 +++++++++++++++++++++++++++--
 2 files changed, 61 insertions(+), 2 deletions(-)

diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index d13ffe76b1c..dc8fde36dbd 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -6405,6 +6405,39 @@ function check_php_version($version='5.2.4') {
     return false;
 }
 
+/**
+ * Returns one or several CSS class names that match the user's browser. These can be put
+ * in the body tag of the page to apply browser-specific rules without relying on CSS hacks
+ */
+function get_browser_version_classes() {
+    $classes = '';
+    if (check_browser_version("MSIE", "0")) {
+        $classes .= 'ie ';
+        if (check_browser_version("MSIE", 8)) {
+            $classes .= 'ie8 ';
+        } elseif (check_browser_version("MSIE", 7)) {
+            $classes .= 'ie7 ';
+        } elseif (check_browser_version("MSIE", 6)) {
+            $classes .= 'ie6 ';
+        }
+    } elseif (check_browser_version("Firefox", 0) || check_browser_version("Gecko", 0) || check_browser_version("Camino", 0)) {
+        $classes .= 'gecko ';
+
+        if (preg_match('/rv\:([1-2])\.([0-9])/', $_SERVER['HTTP_USER_AGENT'], $matches)) {
+            $classes .= "gecko{$matches[1]}{$matches[2]} ";
+        }
+
+    } elseif (check_browser_version("Safari", 0)) {
+        $classes .= 'safari ';
+
+    } elseif (check_browser_version("Opera", 0)) {
+        $classes .= 'opera ';
+
+    }
+
+    return $classes;
+}
+
 /**
  * This function makes the return value of ini_get consistent if you are
  * setting server directives through the .htaccess file in apache.
diff --git a/lib/simpletest/testmoodlelib.php b/lib/simpletest/testmoodlelib.php
index 3f1f2fffd46..4300698b9af 100644
--- a/lib/simpletest/testmoodlelib.php
+++ b/lib/simpletest/testmoodlelib.php
@@ -45,14 +45,17 @@ class moodlelib_test extends UnitTestCase {
             'MSIE' => array(
                 '5.5' => array('Windows 2000' => 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)'),
                 '6.0' => array('Windows XP SP2' => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)'),
-                '7.0' => array('Windows XP SP2' => 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; YPC 3.0.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)')
+                '7.0' => array('Windows XP SP2' => 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; YPC 3.0.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)'),
+                '8.0' => array('Windows Vista' => 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 1.1.4322; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648)'),
+
             ),
             'Firefox' => array(
                 '1.0.6'   => array('Windows XP' => 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.10) Gecko/20050716 Firefox/1.0.6'),
                 '1.5'     => array('Windows XP' => 'Mozilla/5.0 (Windows; U; Windows NT 5.1; nl; rv:1.8) Gecko/20051107 Firefox/1.5'),
                 '1.5.0.1' => array('Windows XP' => 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1'),
                 '2.0'     => array('Windows XP' => 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1',
-                                   'Ubuntu Linux AMD64' => 'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1) Gecko/20060601 Firefox/2.0 (Ubuntu-edgy)')
+                                   'Ubuntu Linux AMD64' => 'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1) Gecko/20060601 Firefox/2.0 (Ubuntu-edgy)'),
+                '3.0.6' => array('SUSE' => 'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.0.6) Gecko/2009012700 SUSE/3.0.6-1.4 Firefox/3.0.6'),
             ),
             'Safari' => array(
                 '312' => array('Mac OS X' => 'Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-us) AppleWebKit/312.1 (KHTML, like Gecko) Safari/312'),
@@ -204,6 +207,29 @@ class moodlelib_test extends UnitTestCase {
         $this->assertFalse(check_browser_version('Firefox', '3.0'));
     }
 
+    function test_get_browser_version_classes() {
+        $_SERVER['HTTP_USER_AGENT'] = $this->user_agents['Safari']['2.0']['Mac OS X'];
+        $this->assertEqual('safari ', get_browser_version_classes());
+
+        $_SERVER['HTTP_USER_AGENT'] = $this->user_agents['Opera']['9.0']['Windows XP'];
+        $this->assertEqual('opera ', get_browser_version_classes());
+
+        $_SERVER['HTTP_USER_AGENT'] = $this->user_agents['MSIE']['6.0']['Windows XP SP2'];
+        $this->assertEqual('ie ie6 ', get_browser_version_classes());
+
+        $_SERVER['HTTP_USER_AGENT'] = $this->user_agents['MSIE']['7.0']['Windows XP SP2'];
+        $this->assertEqual('ie ie7 ', get_browser_version_classes());
+
+        $_SERVER['HTTP_USER_AGENT'] = $this->user_agents['MSIE']['8.0']['Windows Vista'];
+        $this->assertEqual('ie ie8 ', get_browser_version_classes());
+
+        $_SERVER['HTTP_USER_AGENT'] = $this->user_agents['Firefox']['2.0']['Windows XP'];
+        $this->assertEqual('gecko gecko18 ', get_browser_version_classes());
+
+        $_SERVER['HTTP_USER_AGENT'] = $this->user_agents['Firefox']['3.0.6']['SUSE'];
+        $this->assertEqual('gecko gecko19 ', get_browser_version_classes());
+    }
+
     function test_optional_param()
     {
         $_POST['username'] = 'post_user';