2005-01-31 Zoltan Varga <vargaz@freemail.hu>
[mono.git] / mcs / class / corlib / System.Text / Latin1Encoding.cs
index 6bd426761c389b0150d77521ca2e37ffdd7e6e5c..dcf625dc2235624f6886840e85eacf8e9dfbb71c 100644 (file)
@@ -28,361 +28,280 @@ namespace System.Text
 
 using System;
 
+[Serializable]
 internal class Latin1Encoding : Encoding
 {
        // Magic number used by Windows for the ISO Latin1 code page.
        internal const int ISOLATIN_CODE_PAGE = 28591;
 
        // Constructor.
-       public Latin1Encoding()
-                       : base(ISOLATIN_CODE_PAGE)
-                       {
-                               // Nothing to do here.
-                       }
+       public Latin1Encoding () : base (ISOLATIN_CODE_PAGE)
+       {
+               // Nothing to do here.
+       }
 
        // Get the number of bytes needed to encode a character buffer.
-       public override int GetByteCount(char[] chars, int index, int count)
-                       {
-                               if(chars == null)
-                               {
-                                       throw new ArgumentNullException("chars");
-                               }
-                               if(index < 0 || index > chars.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("index", _("ArgRange_Array"));
-                               }
-                               if(count < 0 || count > (chars.Length - index))
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("count", _("ArgRange_Array"));
-                               }
-                               return count;
-                       }
+       public override int GetByteCount (char[] chars, int index, int count)
+       {
+               if (chars == null) {
+                       throw new ArgumentNullException ("chars");
+               }
+               if (index < 0 || index > chars.Length) {
+                       throw new ArgumentOutOfRangeException ("index", _("ArgRange_Array"));
+               }
+               if (count < 0 || count > (chars.Length - index)) {
+                       throw new ArgumentOutOfRangeException ("count", _("ArgRange_Array"));
+               }
+               return count;
+       }
 
        // Convenience wrappers for "GetByteCount".
-       public override int GetByteCount(String s)
-                       {
-                               if(s == null)
-                               {
-                                       throw new ArgumentNullException("s");
-                               }
-                               return s.Length;
-                       }
+       public override int GetByteCount (String s)
+       {
+               if (s == null) {
+                       throw new ArgumentNullException ("s");
+               }
+               return s.Length;
+       }
 
        // Get the bytes that result from encoding a character buffer.
-       public override int GetBytes(char[] chars, int charIndex, int charCount,
+       public override int GetBytes (char[] chars, int charIndex, int charCount,
                                                                 byte[] bytes, int byteIndex)
-                       {
-                               if(chars == null)
-                               {
-                                       throw new ArgumentNullException("chars");
-                               }
-                               if(bytes == null)
-                               {
-                                       throw new ArgumentNullException("bytes");
-                               }
-                               if(charIndex < 0 || charIndex > chars.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("charIndex", _("ArgRange_Array"));
-                               }
-                               if(charCount < 0 || charCount > (chars.Length - charIndex))
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("charCount", _("ArgRange_Array"));
-                               }
-                               if(byteIndex < 0 || byteIndex > bytes.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("byteIndex", _("ArgRange_Array"));
-                               }
-                               if((bytes.Length - byteIndex) < charCount)
-                               {
-                                       throw new ArgumentException
-                                               (_("Arg_InsufficientSpace"));
-                               }
-                               int count = charCount;
-                               char ch;
-                               while(count-- > 0)
-                               {
-                                       ch = chars[charIndex++];
-                                       if(ch < (char)0x0100)
-                                       {
-                                               bytes[byteIndex++] = (byte)ch;
-                                       }
-                                       else if(ch >= '\uFF01' && ch <= '\uFF5E')
-                                       {
-                                               bytes[byteIndex++] = (byte)(ch - 0xFEE0);
-                                       }
-                                       else
-                                       {
-                                               bytes[byteIndex++] = (byte)'?';
-                                       }
-                               }
-                               return charCount;
+       {
+               if (chars == null) {
+                       throw new ArgumentNullException ("chars");
+               }
+               if (bytes == null) {
+                       throw new ArgumentNullException ("bytes");
+               }
+               if (charIndex < 0 || charIndex > chars.Length) {
+                       throw new ArgumentOutOfRangeException ("charIndex", _("ArgRange_Array"));
+               }
+               if (charCount < 0 || charCount > (chars.Length - charIndex)) {
+                       throw new ArgumentOutOfRangeException ("charCount", _("ArgRange_Array"));
+               }
+               if (byteIndex < 0 || byteIndex > bytes.Length) {
+                       throw new ArgumentOutOfRangeException ("byteIndex", _("ArgRange_Array"));
+               }
+               if ((bytes.Length - byteIndex) < charCount) {
+                       throw new ArgumentException (_("Arg_InsufficientSpace"));
+               }
+               int count = charCount;
+               char ch;
+               while (count-- > 0) {
+                       ch = chars [charIndex++];
+                       if (ch < (char)0x0100) {
+                               bytes [byteIndex++] = (byte)ch;
+                       } else if (ch >= '\uFF01' && ch <= '\uFF5E') {
+                               bytes [byteIndex++] = (byte)(ch - 0xFEE0);
+                       } else {
+                               bytes [byteIndex++] = (byte)'?';
                        }
+               }
+               return charCount;
+       }
 
        // Convenience wrappers for "GetBytes".
-       public override int GetBytes(String s, int charIndex, int charCount,
+       public override int GetBytes (String s, int charIndex, int charCount,
                                                                 byte[] bytes, int byteIndex)
-                       {
-                               if(s == null)
-                               {
-                                       throw new ArgumentNullException("s");
-                               }
-                               if(bytes == null)
-                               {
-                                       throw new ArgumentNullException("bytes");
-                               }
-                               if(charIndex < 0 || charIndex > s.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("charIndex", _("ArgRange_StringIndex"));
-                               }
-                               if(charCount < 0 || charCount > (s.Length - charIndex))
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("charCount", _("ArgRange_StringRange"));
-                               }
-                               if(byteIndex < 0 || byteIndex > bytes.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("byteIndex", _("ArgRange_Array"));
-                               }
-                               if((bytes.Length - byteIndex) < charCount)
-                               {
-                                       throw new ArgumentException(_("Arg_InsufficientSpace"));
-                               }
-                               int count = charCount;
-                               char ch;
-                               while(count-- > 0)
-                               {
-                                       ch = s[charIndex++];
-                                       if(ch < (char)0x0100)
-                                       {
-                                               bytes[byteIndex++] = (byte)ch;
-                                       }
-                                       else if(ch >= '\uFF01' && ch <= '\uFF5E')
-                                       {
-                                               bytes[byteIndex++] = (byte)(ch - 0xFEE0);
-                                       }
-                                       else
-                                       {
-                                               bytes[byteIndex++] = (byte)'?';
-                                       }
-                               }
-                               return charCount;
+       {
+               if (s == null) {
+                       throw new ArgumentNullException ("s");
+               }
+               if (bytes == null) {
+                       throw new ArgumentNullException ("bytes");
+               }
+               if (charIndex < 0 || charIndex > s.Length) {
+                       throw new ArgumentOutOfRangeException ("charIndex", _("ArgRange_StringIndex"));
+               }
+               if (charCount < 0 || charCount > (s.Length - charIndex)) {
+                       throw new ArgumentOutOfRangeException ("charCount", _("ArgRange_StringRange"));
+               }
+               if (byteIndex < 0 || byteIndex > bytes.Length) {
+                       throw new ArgumentOutOfRangeException ("byteIndex", _("ArgRange_Array"));
+               }
+               if ((bytes.Length - byteIndex) < charCount) {
+                       throw new ArgumentException (_("Arg_InsufficientSpace"));
+               }
+               int count = charCount;
+               char ch;
+               while (count-- > 0) {
+                       ch = s [charIndex++];
+                       if (ch < (char)0x0100) {
+                               bytes [byteIndex++] = (byte)ch;
+                       } else if (ch >= '\uFF01' && ch <= '\uFF5E') {
+                               bytes [byteIndex++] = (byte)(ch - 0xFEE0);
+                       } else {
+                               bytes [byteIndex++] = (byte)'?';
                        }
+               }
+               return charCount;
+       }
 
        // Get the number of characters needed to decode a byte buffer.
-       public override int GetCharCount(byte[] bytes, int index, int count)
-                       {
-                               if(bytes == null)
-                               {
-                                       throw new ArgumentNullException("bytes");
-                               }
-                               if(index < 0 || index > bytes.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("index", _("ArgRange_Array"));
-                               }
-                               if(count < 0 || count > (bytes.Length - index))
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("count", _("ArgRange_Array"));
-                               }
-                               return count;
-                       }
+       public override int GetCharCount (byte[] bytes, int index, int count)
+       {
+               if (bytes == null) {
+                       throw new ArgumentNullException ("bytes");
+               }
+               if (index < 0 || index > bytes.Length) {
+                       throw new ArgumentOutOfRangeException ("index", _("ArgRange_Array"));
+               }
+               if (count < 0 || count > (bytes.Length - index)) {
+                       throw new ArgumentOutOfRangeException ("count", _("ArgRange_Array"));
+               }
+               return count;
+       }
 
        // Get the characters that result from decoding a byte buffer.
-       public override int GetChars(byte[] bytes, int byteIndex, int byteCount,
+       public override int GetChars (byte[] bytes, int byteIndex, int byteCount,
                                                                 char[] chars, int charIndex)
-                       {
-                               if(bytes == null)
-                               {
-                                       throw new ArgumentNullException("bytes");
-                               }
-                               if(chars == null)
-                               {
-                                       throw new ArgumentNullException("chars");
-                               }
-                               if(byteIndex < 0 || byteIndex > bytes.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("byteIndex", _("ArgRange_Array"));
-                               }
-                               if(byteCount < 0 || byteCount > (bytes.Length - byteIndex))
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("byteCount", _("ArgRange_Array"));
-                               }
-                               if(charIndex < 0 || charIndex > chars.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("charIndex", _("ArgRange_Array"));
-                               }
-                               if((chars.Length - charIndex) < byteCount)
-                               {
-                                       throw new ArgumentException(_("Arg_InsufficientSpace"));
-                               }
-                               int count = byteCount;
-                               while(count-- > 0)
-                               {
-                                       chars[charIndex++] = (char)(bytes[byteIndex++]);
-                               }
-                               return byteCount;
-                       }
+       {
+               if (bytes == null) {
+                       throw new ArgumentNullException ("bytes");
+               }
+               if (chars == null) {
+                       throw new ArgumentNullException ("chars");
+               }
+               if (byteIndex < 0 || byteIndex > bytes.Length) {
+                       throw new ArgumentOutOfRangeException ("byteIndex", _("ArgRange_Array"));
+               }
+               if (byteCount < 0 || byteCount > (bytes.Length - byteIndex)) {
+                       throw new ArgumentOutOfRangeException ("byteCount", _("ArgRange_Array"));
+               }
+               if (charIndex < 0 || charIndex > chars.Length) {
+                       throw new ArgumentOutOfRangeException ("charIndex", _("ArgRange_Array"));
+               }
+               if ((chars.Length - charIndex) < byteCount) {
+                       throw new ArgumentException (_("Arg_InsufficientSpace"));
+               }
+               int count = byteCount;
+               while (count-- > 0) {
+                       chars [charIndex++] = (char)(bytes [byteIndex++]);
+               }
+               return byteCount;
+       }
 
        // Get the maximum number of bytes needed to encode a
        // specified number of characters.
-       public override int GetMaxByteCount(int charCount)
-                       {
-                               if(charCount < 0)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("charCount", _("ArgRange_NonNegative"));
-                               }
-                               return charCount;
-                       }
+       public override int GetMaxByteCount (int charCount)
+       {
+               if (charCount < 0) {
+                       throw new ArgumentOutOfRangeException ("charCount", _("ArgRange_NonNegative"));
+               }
+               return charCount;
+       }
 
        // Get the maximum number of characters needed to decode a
        // specified number of bytes.
-       public override int GetMaxCharCount(int byteCount)
-                       {
-                               if(byteCount < 0)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("byteCount", _("ArgRange_NonNegative"));
-                               }
-                               return byteCount;
-                       }
+       public override int GetMaxCharCount (int byteCount)
+       {
+               if (byteCount < 0) {
+                       throw new ArgumentOutOfRangeException ("byteCount", _("ArgRange_NonNegative"));
+               }
+               return byteCount;
+       }
 
        // Decode a buffer of bytes into a string.
-       public override String GetString(byte[] bytes, int index, int count)
-                       {
-                               if(bytes == null)
-                               {
-                                       throw new ArgumentNullException("bytes");
-                               }
-                               if(index < 0 || index > bytes.Length)
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("index", _("ArgRange_Array"));
-                               }
-                               if(count < 0 || count > (bytes.Length - index))
-                               {
-                                       throw new ArgumentOutOfRangeException
-                                               ("count", _("ArgRange_Array"));
-                               }
-                               /*String s = String.NewString(count);
-                               int posn = 0;
-                               while(count-- > 0)
-                               {
-                                       s.SetChar(posn++, (char)(bytes[index++]));
-                               }
-                               return s;*/
-                               unsafe {
-                                       fixed (byte *ss = &bytes [0]) {
-                                               return new String ((sbyte*)ss, index, count);
-                                       }
-                               }
+       public override String GetString (byte[] bytes, int index, int count)
+       {
+               if (bytes == null) {
+                       throw new ArgumentNullException ("bytes");
+               }
+               if (index < 0 || index > bytes.Length) {
+                       throw new ArgumentOutOfRangeException ("index", _("ArgRange_Array"));
+               }
+               if (count < 0 || count > (bytes.Length - index)) {
+                       throw new ArgumentOutOfRangeException ("count", _("ArgRange_Array"));
+               }
+               if (count == 0)
+                   return String.Empty;
+               unsafe {
+                       fixed (byte *ss = &bytes [0]) {
+                               return new String ((sbyte*)ss, index, count);
                        }
-       public override String GetString(byte[] bytes)
-                       {
-                               if(bytes == null)
-                               {
-                                       throw new ArgumentNullException("bytes");
-                               }
-                               int count = bytes.Length;
-                               /*int posn = 0;
-                               String s = String.NewString(count);
-                               while(count-- > 0)
-                               {
-                                       s.SetChar(posn, (char)(bytes[posn]));
-                                       ++posn;
-                               }
-                               return s;*/
-                               unsafe {
-                                       fixed (byte *ss = &bytes [0]) {
-                                               return new String ((sbyte*)ss, 0, count);
-                                       }
-                               }
+               }
+       }
+       public override String GetString (byte[] bytes)
+       {
+               if (bytes == null) {
+                       throw new ArgumentNullException ("bytes");
+               }
+               int count = bytes.Length;
+               if (count == 0)
+                   return String.Empty;
+               unsafe {
+                       fixed (byte *ss = &bytes [0]) {
+                               return new String ((sbyte*)ss, 0, count);
                        }
+               }
+       }
 
 #if !ECMA_COMPAT
 
        // Get the mail body name for this encoding.
        public override String BodyName
-                       {
-                               get
-                               {
-                                       return "iso-8859-1";
-                               }
-                       }
+       {
+               get {
+                       return "iso-8859-1";
+               }
+       }
 
        // Get the human-readable name for this encoding.
        public override String EncodingName
-                       {
-                               get
-                               {
-                                       return "Western European (ISO)";
-                               }
-                       }
+       {
+               get {
+                       return "Western European (ISO)";
+               }
+       }
 
        // Get the mail agent header name for this encoding.
        public override String HeaderName
-                       {
-                               get
-                               {
-                                       return "iso-8859-1";
-                               }
-                       }
+       {
+               get {
+                       return "iso-8859-1";
+               }
+       }
 
        // Determine if this encoding can be displayed in a Web browser.
        public override bool IsBrowserDisplay
-                       {
-                               get
-                               {
-                                       return true;
-                               }
-                       }
+       {
+               get {
+                       return true;
+               }
+       }
 
        // Determine if this encoding can be saved from a Web browser.
        public override bool IsBrowserSave
-                       {
-                               get
-                               {
-                                       return true;
-                               }
-                       }
+       {
+               get {
+                       return true;
+               }
+       }
 
        // Determine if this encoding can be displayed in a mail/news agent.
        public override bool IsMailNewsDisplay
-                       {
-                               get
-                               {
-                                       return true;
-                               }
-                       }
+       {
+               get {
+                       return true;
+               }
+       }
 
        // Determine if this encoding can be saved from a mail/news agent.
        public override bool IsMailNewsSave
-                       {
-                               get
-                               {
-                                       return true;
-                               }
-                       }
+       {
+               get {
+                       return true;
+               }
+       }
 
        // Get the IANA-preferred Web name for this encoding.
        public override String WebName
-                       {
-                               get
-                               {
-                                       return "iso-8859-1";
-                               }
-                       }
+       {
+               get {
+                       return "iso-8859-1";
+               }
+       }
 
 #endif // !ECMA_COMPAT