2007-04-17 Everaldo Canuto <everaldo@simios.org>
[mono.git] / mcs / class / Managed.Windows.Forms / System.Windows.Forms / Mime.cs
index d4e1a3e067c40ce5ed16d437e8a5949d527c6f42..398701e779174cb7f0dbdd6b20611e0749bc9d79 100644 (file)
@@ -82,8 +82,6 @@ namespace System.Windows.Forms
                
                private static object lock_object = new Object();
                
-//             private int platform = (int) Environment.OSVersion.Platform;
-               
                private bool is_zero_file = false;
                
                private int bytes_read = 0;
@@ -101,7 +99,7 @@ namespace System.Windows.Forms
                public static ArrayList Matches80Plus;
                public static ArrayList MatchesBelow80;
                
-               private Mime)
+               private Mime ()
                {
 #if NET_2_0
                        Aliases = new NameValueCollection (StringComparer.CurrentCultureIgnoreCase);
@@ -126,83 +124,82 @@ namespace System.Windows.Forms
                        int buffer_length = fmcr.Init ();
                        
                        if (buffer_length != -1) {
-                               buffer = new byte[ buffer_length ];
+                               buffer = new byte [buffer_length];
                                mime_available = true;
                        }
                }
                
-               public static bool MimeAvailable
-               {
+               public static bool MimeAvailable {
                        get {
                                return Instance.mime_available;
                        }
                }
                
-               public static string GetMimeTypeForFile( string filename )
+               public static string GetMimeTypeForFile (string filename)
                {
-                       lock ( lock_object )
-                       {
-                               Instance.StartByFileName( filename );
+                       lock (lock_object) {
+                               Instance.StartByFileName (filename);
                        }
                        
                        return Instance.global_result;
                }
                
                // not tested
-               public static string GetMimeTypeForData( byte[] data )
+               public static string GetMimeTypeForData (byte[] data)
                {
-                       lock ( lock_object )
-                       {
-                               Instance.StartDataLookup( data );
+                       lock (lock_object) {
+                               Instance.StartDataLookup (data);
                        }
                        
                        return Instance.global_result;
                }
                
-               public static string GetMimeTypeForString( string input )
+               public static string GetMimeTypeForString (string input)
                {
-                       lock ( lock_object )
-                       {
-                               Instance.StartStringLookup( input );
+                       lock (lock_object) {
+                               Instance.StartStringLookup (input);
                        }
                        
                        return Instance.global_result;
                }
                
-               public static string GetMimeAlias( string mimetype )
+               public static string GetMimeAlias (string mimetype)
                {
-                       return Aliases[ mimetype ];
+                       return Aliases [mimetype];
                }
                
-               public static string GetMimeSubClass( string mimetype )
+               public static string GetMimeSubClass (string mimetype)
                {
-                       return SubClasses[ mimetype ];
+                       return SubClasses [mimetype];
                }
                
-               private void StartByFileName( string filename )
+               public static void CleanFileCache ()
                {
-                       if ( mime_file_cache.ContainsKey( filename ) )
-                       {
-                               global_result = mime_file_cache[ filename ];
+                       lock (lock_object) {
+                               Instance.mime_file_cache.Clear ();
+                       }
+               }
+               
+               private void StartByFileName (string filename)
+               {
+                       if (mime_file_cache.ContainsKey (filename)) {
+                               global_result = mime_file_cache [filename];
                                return;
                        }
                        
                        current_file_name = filename;
                        is_zero_file = false;
                        
-//                     if ( !CheckForInode( ) )
-//                     {
                        global_result = octet_stream;
                        
-                       GoByFileName( );
-//                     }
+                       GoByFileName ();
                        
-                       mime_file_cache.Add( current_file_name, global_result );
+                       mime_file_cache.Add (current_file_name, global_result);
                        
                        if (mime_file_cache.Count > mime_file_cache_max_size) {
                                IEnumerator enumerator = mime_file_cache.GetEnumerator ();
                                
-                               int counter = mime_file_cache_max_size - 1000;
+                               int counter = mime_file_cache_max_size - 500;
                                
                                while (enumerator.MoveNext ()) {
                                        mime_file_cache.Remove (enumerator.Current.ToString ());
@@ -214,120 +211,50 @@ namespace System.Windows.Forms
                        }
                }
                
-               private void StartDataLookup( byte[] data )
+               private void StartDataLookup (byte[] data)
                {
                        global_result = octet_stream;
                        
-                       System.Array.Clear( buffer, 0, buffer.Length );
+                       System.Array.Clear (buffer, 0, buffer.Length);
                        
-                       if ( data.Length > buffer.Length )
-                       {
-                               System.Array.Copy( data, buffer, buffer.Length );
-                       }
-                       else
-                       {
-                               System.Array.Copy( data, buffer, data.Length );
+                       if (data.Length > buffer.Length) {
+                               System.Array.Copy (data, buffer, buffer.Length);
+                       } else {
+                               System.Array.Copy (data, buffer, data.Length);
                        }
                        
-                       if ( CheckMatch80Plus( ) )
+                       if (CheckMatch80Plus ())
                                return;
                        
-                       if ( CheckMatchBelow80( ) )
+                       if (CheckMatchBelow80 ())
                                return;
                        
-                       CheckForBinaryOrText);
+                       CheckForBinaryOrText ();
                }
                
-               private void StartStringLookup( string input )
+               private void StartStringLookup (string input)
                {
                        global_result = text_plain;
                        
                        search_string = input;
                        
-                       if ( CheckForContentTypeString( ) )
+                       if (CheckForContentTypeString ())
                                return;
                }
                
-//             private bool CheckForInode( )
-//             {
-//                     if ( ( platform == 4 ) || ( platform == 128 ) )
-//                     {
-//#if __MonoCS__
-//                             try
-//                             {
-//                                     // *nix platform
-//                                     Mono.Unix.UnixFileInfo ufi = new Mono.Unix.UnixFileInfo( current_file_name );
-//
-//                                     if ( ufi.IsFile )
-//                                     {
-//                                             return false;
-//                                     }
-//                                     else
-//                                     if ( ufi.IsDirectory )
-//                                     {
-//                                             global_result = "inode/directory";
-//                                             return true;
-//                                     }
-//                                     else
-//                                     if ( ufi.IsBlockDevice )
-//                                     {
-//                                             global_result = "inode/blockdevice";
-//                                             return true;
-//                                     }
-//                                     else
-//                                     if ( ufi.IsSocket )
-//                                     {
-//                                             global_result = "inode/socket";
-//                                             return true;
-//                                     }
-//                                     else
-//                                     if ( ufi.IsSymbolicLink )
-//                                     {
-//                                             global_result = "inode/symlink";
-//                                             return true;
-//                                     }
-//                                     else
-//                                     if ( ufi.IsCharacterDevice )
-//                                     {
-//                                             global_result = "inode/chardevice";
-//                                             return true;
-//                                     }
-//                                     else
-//                                     if ( ufi.IsFIFO )
-//                                     {
-//                                             global_result = "inode/fifo";
-//                                             return true;
-//                                     }
-//                             } catch( Exception e )
-//                             {
-//                                     return false;
-//                             }
-//#endif
-//                     }
-//                     else
-//                     {
-//                             // TODO!!!!
-//                             // windows platform
-//                     }
-//                     
-//                     return false;
-//             }
-               
-               private void GoByFileName( )
+               private void GoByFileName ()
                {
                        // check if we can open the file
-                       if ( !OpenFile( ) )
-                       {
+                       if (!OpenFile ()) {
                                // couldn't open the file, check globals only
-                               CheckGlobalPatterns);
+                               CheckGlobalPatterns ();
                                
                                return;
                        }
                        
-                       if ( !is_zero_file )
-                       {
+                       if (!is_zero_file) {
                                // check for matches with a priority >= 80
-                               if ( CheckMatch80Plus( ) )
+                               if (CheckMatch80Plus ())
                                        return;
                        }
                        
@@ -335,27 +262,25 @@ namespace System.Windows.Forms
                        // this should be done for zero size files also,
                        // for example zero size file trash.ccc~ should return
                        // application/x-trash instead of application/x-zerosize
-                       if ( CheckGlobalPatterns( ) )
+                       if (CheckGlobalPatterns ())
                                return;
                        
                        // if file size is zero, no other checks are needed
-                       if ( is_zero_file )
+                       if (is_zero_file)
                                return;
                        
                        // ok, still nothing matches then try matches with a priority < 80
-                       if ( CheckMatchBelow80( ) )
+                       if (CheckMatchBelow80 ())
                                return;
                        
                        // wow, still nothing... return application/octet-stream for binary data, or text/plain for textual data
-                       CheckForBinaryOrText);
+                       CheckForBinaryOrText ();
                }
                
-               private bool CheckMatch80Plus)
+               private bool CheckMatch80Plus ()
                {
-                       foreach ( Match match in Matches80Plus )
-                       {
-                               if ( TestMatch( match ) )
-                               {
+                       foreach (Match match in Matches80Plus) {
+                               if (TestMatch (match)) {
                                        global_result = match.MimeType;
                                        
                                        return true;
@@ -366,7 +291,7 @@ namespace System.Windows.Forms
                }
                
                // this little helper method gives us a real speed improvement
-               private bool FastEndsWidth(string input, string value)
+               private bool FastEndsWidth (string input, string value)
                {
                        if (value.Length > input.Length)
                                return false;
@@ -374,7 +299,7 @@ namespace System.Windows.Forms
                        int z = input.Length - 1;
                        
                        for (int i = value.Length - 1; i > -1; i--) {
-                               if (value[i] != input[z])
+                               if (value [i] != input [z])
                                        return false;
                                
                                z--;
@@ -383,46 +308,46 @@ namespace System.Windows.Forms
                        return true;
                }
                
-               private bool FastStartsWith(string input, string value)
+               private bool FastStartsWith (string input, string value)
                {
                        if (value.Length > input.Length)
                                return false;
                        
                        for (int i = 0; i < value.Length; i++)
-                               if (value[i] != input[i])
+                               if (value [i] != input [i])
                                        return false;
                        
                        return true;
                }
                
                // start always with index = 0
-               private int FastIndexOf(string input, char value)
+               private int FastIndexOf (string input, char value)
                {
                        if (input.Length == 0)
                                return -1;
                        
                        for (int i = 0; i < input.Length; i++)
-                               if (input[i] == value)
+                               if (input [i] == value)
                                        return i;
                        
                        return -1;
                }
                
-               private int FastIndexOf(string input, string value)
+               private int FastIndexOf (string input, string value)
                {
                        if (input.Length == 0)
                                return -1;
                        
                        for (int i = 0; i < input.Length - value.Length; i++) {
-                               if (input[i] == value[0]) {
+                               if (input [i] == value [0]) {
                                        int counter = 0;
                                        for (int z = 1; z < value.Length; z++) {
-                                               if (input[i+z] != value[z])
+                                               if (input [i + z] != value [z])
                                                        break;
                                                
                                                counter++;
                                        }
-                                       if (counter == value.Length -1) {
+                                       if (counter == value.Length - 1) {
                                                return i;
                                        }
                                }
@@ -431,115 +356,93 @@ namespace System.Windows.Forms
                        return -1;
                }
                
-               private void CheckGlobalResult)
+               private void CheckGlobalResult ()
                {
-                       int comma_index = FastIndexOf(global_result, ',');
+                       int comma_index = FastIndexOf (global_result, ',');
                        
-                       if ( comma_index != -1 )
-                       {
-                               global_result = global_result.Substring( 0, comma_index );
+                       if (comma_index != -1) {
+                               global_result = global_result.Substring (0, comma_index);
                        }
                }
                
-               private bool CheckGlobalPatterns)
+               private bool CheckGlobalPatterns ()
                {
-                       string filename = Path.GetFileName( current_file_name );
+                       string filename = Path.GetFileName (current_file_name);
                        
                        // first check for literals
-                       for ( int i = 0; i < GlobalLiterals.Count; i++ )
-                       {
-                               string key = GlobalLiterals.GetKey(i);
+                       for (int i = 0; i < GlobalLiterals.Count; i++) {
+                               string key = GlobalLiterals.GetKey (i);
                                
                                // no regex char
-                               if ( FastIndexOf(key, '[' ) == -1 )
-                               {
-                                       if (FastIndexOf(filename, key) != -1)
-                                       {
-                                               global_result = GlobalLiterals[i];
-                                               CheckGlobalResult( );
+                               if (FastIndexOf (key, '[') == -1) {
+                                       if (FastIndexOf (filename, key) != -1) {
+                                               global_result = GlobalLiterals [i];
+                                               CheckGlobalResult ();
                                                return true;
                                        }
-                               }
-                               else // regex it ;)
-                               {
-                                       if ( Regex.IsMatch( filename, key ) )
-                                       {
-                                               global_result = GlobalLiterals[ i ];
-                                               CheckGlobalResult( );
+                               } else {
+                                       if (Regex.IsMatch (filename, key)) {
+                                               global_result = GlobalLiterals [i];
+                                               CheckGlobalResult ();
                                                return true;
                                        }
                                }
                        }
                        
-                       if ( FastIndexOf(filename, '.' ) != -1 )
-                       {
+                       if (FastIndexOf (filename, '.') != -1) {
                                // check for double extension like .tar.gz
-                               for ( int i = 0; i < GlobalPatternsLong.Count; i++ )
-                               {
-                                       string key = GlobalPatternsLong.GetKey( i );
+                               for (int i = 0; i < GlobalPatternsLong.Count; i++) {
+                                       string key = GlobalPatternsLong.GetKey (i);
                                        
-                                       if (FastEndsWidth (filename, key))
-                                       {
-                                               global_result = GlobalPatternsLong[ i ];
-                                               CheckGlobalResult( );
+                                       if (FastEndsWidth (filename, key)) {
+                                               global_result = GlobalPatternsLong [i];
+                                               CheckGlobalResult ();
                                                return true;
-                                       }
-                                       else
-                                       {
-                                               if ( FastEndsWidth (filename.ToLower( ), key ) )
-                                               {
-                                                       global_result = GlobalPatternsLong[ i ];
-                                                       CheckGlobalResult( );
+                                       } else {
+                                               if (FastEndsWidth (filename.ToLower (), key)) {
+                                                       global_result = GlobalPatternsLong [i];
+                                                       CheckGlobalResult ();
                                                        return true;
                                                }
                                        }
                                }
                                
                                // check normal extensions...
-                               string extension = Path.GetExtension( current_file_name );
+                               string extension = Path.GetExtension (current_file_name);
                                
-                               if ( extension.Length != 0 )
-                               {
-                                       string global_result_tmp = GlobalPatternsShort[ extension ];
+                               if (extension.Length != 0) {
+                                       string global_result_tmp = GlobalPatternsShort [extension];
                                        
-                                       if ( global_result_tmp != null )
-                                       {
+                                       if (global_result_tmp != null) {
                                                global_result = global_result_tmp;
-                                               CheckGlobalResult);
+                                               CheckGlobalResult ();
                                                return true;
                                        }
                                        
-                                       global_result_tmp = GlobalPatternsShort[ extension.ToLower( ) ];
+                                       global_result_tmp = GlobalPatternsShort [extension.ToLower ()];
                                        
-                                       if ( global_result_tmp != null )
-                                       {
+                                       if (global_result_tmp != null) {
                                                global_result = global_result_tmp;
-                                               CheckGlobalResult);
+                                               CheckGlobalResult ();
                                                return true;
                                        }
                                }
                        }
                        
                        // finally check if a prefix or suffix matches
-                       for ( int i = 0; i < GlobalSufPref.Count; i++ )
-                       {
-                               string key = GlobalSufPref.GetKey( i );
+                       for (int i = 0; i < GlobalSufPref.Count; i++) {
+                               string key = GlobalSufPref.GetKey (i);
                                
-                               if ( key[0] == '*' )
-                               {
-                                       if (FastEndsWidth(filename, key.Replace( "*", String.Empty )))
-                                       {
-                                               global_result = GlobalSufPref[ i ];
-                                               CheckGlobalResult( );
+                               if (key [0] == '*') {
+                                       if (FastEndsWidth (filename, key.Replace ("*", String.Empty))) {
+                                               global_result = GlobalSufPref [i];
+                                               CheckGlobalResult ();
                                                return true;
                                        }
-                               }
-                               else
-                               {
-                                       if ( FastStartsWith(filename, key.Replace( "*", String.Empty ) ) )
-                                       {
-                                               global_result = GlobalSufPref[ i ];
-                                               CheckGlobalResult( );
+                               } else {
+                                       if (FastStartsWith (filename, key.Replace ("*", String.Empty))) {
+                                               global_result = GlobalSufPref [i];
+                                               CheckGlobalResult ();
                                                return true;
                                        }
                                }
@@ -548,12 +451,10 @@ namespace System.Windows.Forms
                        return false;
                }
                
-               private bool CheckMatchBelow80)
+               private bool CheckMatchBelow80 ()
                {
-                       foreach ( Match match in MatchesBelow80 )
-                       {
-                               if ( TestMatch( match ) )
-                               {
+                       foreach (Match match in MatchesBelow80) {
+                               if (TestMatch (match)) {
                                        global_result = match.MimeType;
                                        
                                        return true;
@@ -563,16 +464,14 @@ namespace System.Windows.Forms
                        return false;
                }
                
-               private void CheckForBinaryOrText)
+               private void CheckForBinaryOrText ()
                {
                        // check the first 32 bytes
                        
-                       for ( int i = 0; i < 32; i++ )
-                       {
-                               char c = System.Convert.ToChar( buffer[ i ] );
+                       for (int i = 0; i < 32; i++) {
+                               char c = System.Convert.ToChar (buffer [i]);
                                
-                               if ( c != '\t' &&  c != '\n' && c != '\r' && c != 12 && c < 32 )
-                               {
+                               if (c != '\t' &&  c != '\n' && c != '\r' && c != 12 && c < 32) {
                                        global_result = octet_stream;
                                        return;
                                }
@@ -590,7 +489,7 @@ namespace System.Windows.Forms
                        return false;
                }
                
-               private bool TestMatchlet( Matchlet matchlet )
+               private bool TestMatchlet (Matchlet matchlet)
                {
                        //  using a simple brute force search algorithm
                        // compare each (masked) value from the buffer with the (masked) value from the matchlet
@@ -599,72 +498,54 @@ namespace System.Windows.Forms
                        if (matchlet.Offset + matchlet.ByteValue.Length > bytes_read)
                                return false;
                        
-                       for ( int offset_counter = 0; offset_counter < matchlet.OffsetLength; offset_counter++ )
-                       {
+                       for (int offset_counter = 0; offset_counter < matchlet.OffsetLength; offset_counter++) {
                                if (matchlet.Offset + offset_counter + matchlet.ByteValue.Length > bytes_read)
                                        return false;
                                
-                               if ( matchlet.Mask == null )
-                               {
-                                       if ( buffer[ matchlet.Offset + offset_counter ] == matchlet.ByteValue[ 0 ] )
-                                       {
-                                               if ( matchlet.ByteValue.Length == 1 )
-                                               {
-                                                       if ( matchlet.Matchlets.Count > 0 )
-                                                       {
-                                                               foreach ( Matchlet sub_matchlet in matchlet.Matchlets )
-                                                               {
-                                                                       if ( TestMatchlet( sub_matchlet ) )
+                               if (matchlet.Mask == null) {
+                                       if (buffer [matchlet.Offset + offset_counter] == matchlet.ByteValue [0]) {
+                                               if (matchlet.ByteValue.Length == 1) {
+                                                       if (matchlet.Matchlets.Count > 0) {
+                                                               foreach (Matchlet sub_matchlet in matchlet.Matchlets) {
+                                                                       if (TestMatchlet (sub_matchlet))
                                                                                return true;
                                                                }
-                                                       }
-                                                       else
+                                                       } else
                                                                return true;
                                                }
                                                
                                                int minus = 0;
                                                // check if the last matchlet byte value is the same as the byte value in the buffer...
                                                if (matchlet.ByteValue.Length > 2) {
-                                                       if (buffer[ matchlet.Offset + offset_counter + matchlet.ByteValue.Length - 1 ] != matchlet.ByteValue[ matchlet.ByteValue.Length - 1 ])
+                                                       if (buffer [matchlet.Offset + offset_counter + matchlet.ByteValue.Length - 1] != matchlet.ByteValue [matchlet.ByteValue.Length - 1])
                                                                return false;
                                                        
                                                        minus = 1;
                                                }
                                                
-                                               for ( int i = 1; i < matchlet.ByteValue.Length - minus; i++ )
-                                               {
-                                                       if ( buffer[ matchlet.Offset + offset_counter + i ] != matchlet.ByteValue[ i ] )
+                                               for (int i = 1; i < matchlet.ByteValue.Length - minus; i++) {
+                                                       if (buffer [matchlet.Offset + offset_counter + i] != matchlet.ByteValue [i])
                                                                return false;
                                                }
                                                
-                                               if ( matchlet.Matchlets.Count > 0 )
-                                               {
-                                                       foreach ( Matchlet sub_matchlets in matchlet.Matchlets )
-                                                       {
-                                                               if ( TestMatchlet( sub_matchlets ) )
+                                               if (matchlet.Matchlets.Count > 0) {
+                                                       foreach (Matchlet sub_matchlets in matchlet.Matchlets) {
+                                                               if (TestMatchlet (sub_matchlets))
                                                                        return true;
                                                        }
-                                               }
-                                               else
+                                               } else
                                                        return true;
                                        }
-                               }
-                               else // with mask ( it's the same as above, only AND the byte with the corresponding mask byte
-                               {
-                                       if ( ( buffer[ matchlet.Offset + offset_counter ] & matchlet.Mask[ 0 ] )  ==
-                                           ( matchlet.ByteValue[ 0 ] & matchlet.Mask[ 0 ] ) )
-                                       {
-                                               if ( matchlet.ByteValue.Length == 1 )
-                                               {
-                                                       if ( matchlet.Matchlets.Count > 0 )
-                                                       {
-                                                               foreach ( Matchlet sub_matchlets in matchlet.Matchlets )
-                                                               {
-                                                                       if ( TestMatchlet( sub_matchlets ) )
+                               } else {
+                                       if ((buffer [matchlet.Offset + offset_counter] & matchlet.Mask [0])  ==
+                                           (matchlet.ByteValue [0] & matchlet.Mask [0])) {
+                                               if (matchlet.ByteValue.Length == 1) {
+                                                       if (matchlet.Matchlets.Count > 0) {
+                                                               foreach (Matchlet sub_matchlets in matchlet.Matchlets) {
+                                                                       if (TestMatchlet (sub_matchlets))
                                                                                return true;
                                                                }
-                                                       }
-                                                       else
+                                                       } else
                                                                return true;
                                                }
                                                
@@ -672,29 +553,25 @@ namespace System.Windows.Forms
                                                // check if the last matchlet byte value is the same as the byte value in the buffer...
                                                if (matchlet.ByteValue.Length > 2) {
                                                        
-                                                       if ((buffer[ matchlet.Offset + offset_counter + matchlet.ByteValue.Length - 1 ] & matchlet.Mask[ matchlet.ByteValue.Length - 1 ])
-                                                           != (matchlet.ByteValue[ matchlet.ByteValue.Length - 1 ] & matchlet.Mask[ matchlet.ByteValue.Length - 1 ]))
+                                                       if ((buffer [matchlet.Offset + offset_counter + matchlet.ByteValue.Length - 1] & matchlet.Mask [matchlet.ByteValue.Length - 1])
+                                                           != (matchlet.ByteValue [matchlet.ByteValue.Length - 1] & matchlet.Mask [matchlet.ByteValue.Length - 1]))
                                                                return false;
                                                        
                                                        minus = 1;
                                                }
                                                
-                                               for ( int i = 1; i < matchlet.ByteValue.Length - minus; i++ )
-                                               {
-                                                       if ( ( buffer[ matchlet.Offset + offset_counter + i ]  & matchlet.Mask[ i ] ) !=
-                                                           ( matchlet.ByteValue[ i ] & matchlet.Mask[ i ] ) )
+                                               for (int i = 1; i < matchlet.ByteValue.Length - minus; i++) {
+                                                       if ((buffer [matchlet.Offset + offset_counter + i]  & matchlet.Mask [i]) !=
+                                                           (matchlet.ByteValue [i] & matchlet.Mask [i]))
                                                                return false;
                                                }
                                                
-                                               if ( matchlet.Matchlets.Count > 0 )
-                                               {
-                                                       foreach ( Matchlet sub_matchlets in matchlet.Matchlets )
-                                                       {
-                                                               if ( TestMatchlet( sub_matchlets ) )
+                                               if (matchlet.Matchlets.Count > 0) {
+                                                       foreach (Matchlet sub_matchlets in matchlet.Matchlets) {
+                                                               if (TestMatchlet (sub_matchlets))
                                                                        return true;
                                                        }
-                                               }
-                                               else
+                                               } else
                                                        return true;
                                        }
                                }
@@ -703,82 +580,72 @@ namespace System.Windows.Forms
                        return false;
                }
                
-               private bool OpenFile)
+               private bool OpenFile ()
                {
-                       try
-                       {
-                               file_stream = new FileStream( current_file_name, FileMode.Open, FileAccess.Read ); // FileShare ??? use BinaryReader ???
+                       try {
+                               file_stream = new FileStream (current_file_name, FileMode.Open, FileAccess.Read); // FileShare ??? use BinaryReader ???
                                
-                               if ( file_stream.Length == 0 )
-                               {
+                               if (file_stream.Length == 0) {
                                        global_result = zero_file;
                                        is_zero_file = true;
-                               }
-                               else
-                               {
-                                       bytes_read = file_stream.Read( buffer, 0, buffer.Length );
+                               } else {
+                                       bytes_read = file_stream.Read (buffer, 0, buffer.Length);
                                        
                                        // do not clear the whole buffer everytime; clear only what's needed
                                        if (bytes_read < buffer.Length) {
-                                               System.Array.Clear( buffer, bytes_read, buffer.Length - bytes_read );
+                                               System.Array.Clear (buffer, bytes_read, buffer.Length - bytes_read);
                                        }
                                }
                                
-                               file_stream.Close( );
-                       }
-                       catch (Exception)
-                       {
+                               file_stream.Close ();
+                       } catch (Exception) {
                                return false;
                        }
                        
                        return true;
                }
                
-               private bool CheckForContentTypeString)
+               private bool CheckForContentTypeString ()
                {
-                       int index = search_string.IndexOf( "Content-type:" );
+                       int index = search_string.IndexOf ("Content-type:");
                        
-                       if ( index != -1 )
-                       {
+                       if (index != -1) {
                                index += 13; // Length of string "Content-type:"
                                
                                global_result = String.Empty;
                                
-                               while ( search_string[ index ] != ';' )
-                               {
-                                       global_result += search_string[ index++ ];
+                               while (search_string [index] != ';') {
+                                       global_result += search_string [index++];
                                }
                                
-                               global_result.Trim);
+                               global_result.Trim ();
                                
                                return true;
                        }
                        
                        // convert string to byte array
-                       byte[] string_byte = ( new ASCIIEncoding( ) ).GetBytes( search_string );
+                       byte[] string_byte = (new ASCIIEncoding ()).GetBytes (search_string);
                        
-                       System.Array.Clear( buffer, 0, buffer.Length );
+                       System.Array.Clear (buffer, 0, buffer.Length);
                        
-                       if ( string_byte.Length > buffer.Length )
-                       {
-                               System.Array.Copy( string_byte, buffer, buffer.Length );
-                       }
-                       else
-                       {
-                               System.Array.Copy( string_byte, buffer, string_byte.Length );
+                       if (string_byte.Length > buffer.Length) {
+                               System.Array.Copy (string_byte, buffer, buffer.Length);
+                       } else {
+                               System.Array.Copy (string_byte, buffer, string_byte.Length);
                        }
                        
-                       if ( CheckMatch80Plus( ) )
+                       if (CheckMatch80Plus ())
                                return true;
                        
-                       if ( CheckMatchBelow80( ) )
+                       if (CheckMatchBelow80 ())
                                return true;
                        
                        return false;
                }
        }
        
-       internal class FDOMimeConfigReader {
+       internal class FDOMimeConfigReader
+       {
                bool fdo_mime_available = false;
                StringCollection shared_mime_paths = new StringCollection ();
                BinaryReader br;
@@ -862,15 +729,17 @@ namespace System.Windows.Forms
                                                // indent
                                                char c;
                                                if (br.PeekChar () != '>') {
-                                                       string indent_string = String.Empty;
+                                                       StringBuilder indent_string = new StringBuilder ();
+                                                       //string indent_string = String.Empty;
                                                        while (true) {
                                                                if (br.PeekChar () == '>')
                                                                        break;
                                                                
                                                                c = br.ReadChar ();
-                                                               indent_string += c;
+                                                               //indent_string += c;
+                                                               indent_string.Append (c);
                                                        }
-                                                       indent = Convert.ToInt32 (indent_string);
+                                                       indent = Convert.ToInt32 (indent_string.ToString ());
                                                }
                                                
                                                int offset = 0;
@@ -1030,10 +899,10 @@ namespace System.Windows.Forms
                                                        
                                                        if (split2.Length > 2) {
                                                                // more than one dot
-                                                               Mime.GlobalPatternsLong.Add (split [1].Remove(0, 1), split [0]);
+                                                               Mime.GlobalPatternsLong.Add (split [1].Remove (0, 1), split [0]);
                                                        } else {
                                                                // normal
-                                                               Mime.GlobalPatternsShort.Add (split [1].Remove(0, 1), split [0]);
+                                                               Mime.GlobalPatternsShort.Add (split [1].Remove (0, 1), split [0]);
                                                        }
                                                }
                                        }
@@ -1098,7 +967,7 @@ namespace System.Windows.Forms
                
                private int ReadValue ()
                {
-                       string result_string = String.Empty;
+                       StringBuilder result_string = new StringBuilder ();
                        int result = 0;
                        char c;
                        
@@ -1107,10 +976,10 @@ namespace System.Windows.Forms
                                        break;
                                
                                c = br.ReadChar ();
-                               result_string += c;
+                               result_string.Append (c);
                        }
                        
-                       result = Convert.ToInt32 (result_string);
+                       result = Convert.ToInt32 (result_string.ToString ());
                        
                        return result;
                }
@@ -1118,27 +987,27 @@ namespace System.Windows.Forms
                private string ReadPriorityAndMimeType (ref int priority)
                {
                        if (br.ReadChar () == '[') {
-                               string priority_string = String.Empty;
+                               StringBuilder priority_string = new StringBuilder ();
                                while (true) {
                                        char c = br.ReadChar ();
                                        if (c == ':')
                                                break;
-                                       priority_string += c;
+                                       priority_string.Append (c);
                                }
                                
-                               priority = System.Convert.ToInt32 (priority_string);
+                               priority = System.Convert.ToInt32 (priority_string.ToString ());
                                
-                               string mime_type_result = String.Empty;
+                               StringBuilder mime_type_result = new StringBuilder ();
                                while (true) {
                                        char c = br.ReadChar ();
                                        if (c == ']')
                                                break;
                                        
-                                       mime_type_result += c;
+                                       mime_type_result.Append (c);
                                }
                                
                                if (br.ReadChar () == '\n')
-                                       return mime_type_result;
+                                       return mime_type_result.ToString ();
                        }
                        return null;
                }
@@ -1160,7 +1029,8 @@ namespace System.Windows.Forms
                }
        }
        
-       internal class Match {
+       internal class Match
+       {
                string mimeType;
                int priority;
                ArrayList matchlets = new ArrayList();
@@ -1192,7 +1062,8 @@ namespace System.Windows.Forms
                }
        }
        
-       internal class Matchlet {
+       internal class Matchlet
+       {
                byte[] byteValue;
                byte[] mask = null;