MySQL: Check for case-sensitivity

src/Umbraco.Core/DatabaseContext.cs

@@ -385,10 +385,24 @@ namespace Umbraco.Core
             {
                 LogHelper.Info<DatabaseContext>("Database configuration status: Started");
 
+                string message;
+
                 var database = new UmbracoDatabase(_connectionString, ProviderName);
+                if (SyntaxConfig.SqlSyntaxProvider.SupportsCaseInsensitiveQueries(database) == false)
+                {
+                    message = "<p>&nbsp;</p><p>The database you're trying to use does not support case insensitive queries. <br />We currently do not support these types of databases.</p>" +
+                              "<p>You can fix this by changing the following two settings in your my.ini file in your MySQL installation directory:</p>" +
+                              "<pre>lower_case_table_names=1\nlower_case_file_system=1</pre><br />" +
+                              "<p>Note: Make sure to check with your hosting provider if they support case insensitive queries as well.</p>" +
+                              "<p>For more technical information on case sensitivity in MySQL, have a look at " +
+                              "<a href='http://dev.mysql.com/doc/refman/5.0/en/identifier-case-sensitivity.html'>the documentation on the subject</a></p>";
+
+                    return new Result { Message = message, Success = false, Percentage = "15" };
+                }
+
                 var schemaResult = ValidateDatabaseSchema();
                 var installedVersion = schemaResult.DetermineInstalledVersion();
-                string message;
+                
 
                 //If Configuration Status is empty and the determined version is "empty" its a new install - otherwise upgrade the existing
                 if (string.IsNullOrEmpty(GlobalSettings.ConfigurationStatus) && installedVersion.Equals(new Version(0, 0, 0)))
@@ -424,7 +438,7 @@ namespace Umbraco.Core
                            {
                                Message =
                                    "The database configuration failed with the following message: " + ex.Message +
-                                   "\n Please check log file for addtional information (can be found in '/App_Data/Logs/UmbracoTraceLog.txt')",
+                                   "\n Please check log file for additional information (can be found in '/App_Data/Logs/UmbracoTraceLog.txt')",
                                Success = false,
                                Percentage = "90"
                            };

src/Umbraco.Core/Persistence/SqlSyntax/ISqlSyntaxProvider.cs

@@ -48,6 +48,7 @@ namespace Umbraco.Core.Persistence.SqlSyntax
         string FormatTableRename(string oldName, string newName);
         bool SupportsClustered();
         bool SupportsIdentityInsert();
+        bool? SupportsCaseInsensitiveQueries(Database db);
         IEnumerable<string> GetTablesInSchema(Database db);
         IEnumerable<ColumnInfo> GetColumnsInSchema(Database db);
         IEnumerable<Tuple<string, string>> GetConstraintsPerTable(Database db);

src/Umbraco.Core/Persistence/SqlSyntax/MySqlSyntaxProvider.cs

@@ -309,5 +309,27 @@ namespace Umbraco.Core.Persistence.SqlSyntax
         public override string DropIndex { get { return "DROP INDEX {0} ON {1}"; } }
 
         public override string RenameColumn { get { return "ALTER TABLE {0} CHANGE {1} {2}"; } }
+
+        public override bool? SupportsCaseInsensitiveQueries(Database db)
+        {
+            bool? supportsCaseInsensitiveQueries;
+
+            try
+            {
+                db.OpenSharedConnection();
+                var lowerCaseFileSystem = db.Fetch<int>("SELECT @@Global.lower_case_file_system");
+                var lowerCaseTableNames = db.Fetch<int>("SELECT @@Global.lower_case_table_names");
+
+                supportsCaseInsensitiveQueries = lowerCaseFileSystem.First() == 1 && lowerCaseTableNames.First() == 0;
+            }
+            finally
+            {
+                db.CloseSharedConnection();
+            }
+
+            // Could return null, which means testing failed, 
+            // add message to check with their hosting provider
+            return supportsCaseInsensitiveQueries;
+        }
     }
 }

src/Umbraco.Core/Persistence/SqlSyntax/SqlSyntaxProviderBase.cs

@@ -151,6 +151,11 @@ namespace Umbraco.Core.Persistence.SqlSyntax
             return "NVARCHAR";
         }
 
+        public virtual bool? SupportsCaseInsensitiveQueries(Database db)
+        {
+            return true;
+        }
+
         public virtual IEnumerable<string> GetTablesInSchema(Database db)
         {
             return new List<string>();

src/Umbraco.Web.UI/umbraco_client/Installer/js/jquery.main.js

@@ -31,7 +31,7 @@ function updateProgressBar(percent) {
 
 function updateStatusMessage(message, error) {
     if (message != null && message != undefined) {
-        jQuery(".loader > strong").text(message);
+        jQuery(".loader > strong").append(message);
     }
     
     if (error != undefined) {