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/*
* Firebird ADO.NET Data provider for .NET and Mono
*
* The contents of this file are subject to the Initial
* Developer's Public License Version 1.0 (the "License");
* you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
* http://www.firebirdsql.org/index.php?op=doc&id=idpl
*
* Software distributed under the License is distributed on
* an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either
* express or implied. See the License for the specific
* language governing rights and limitations under the License.
*
* Copyright (c) 2002, 2005 Carlos Guzman Alvarez
* All Rights Reserved.
*/
using System;
using System.Text;
namespace FirebirdSql.Data.Common
{
internal sealed class Charset
{
#region Static Fields
private readonly static CharsetCollection supportedCharsets = Charset.InitializeSupportedCharsets();
#endregion
#region Static Properties
public static CharsetCollection SupportedCharsets
{
get { return Charset.supportedCharsets; }
}
public static Charset DefaultCharset
{
get { return Charset.SupportedCharsets[0]; }
}
#endregion
#region Fields
private int id;
private int bytesPerCharacter;
private string name;
private string systemName;
#endregion
#region Properties
public int ID
{
get { return this.id; }
}
public string Name
{
get { return this.name; }
}
public int BytesPerCharacter
{
get { return this.bytesPerCharacter; }
}
#endregion
#region Constructors
public Charset(
int id, string name, int bytesPerCharacter, string systemName)
{
this.id = id;
this.name = name;
this.bytesPerCharacter = bytesPerCharacter;
this.systemName = systemName;
}
#endregion
#region Methods
public byte[] GetBytes(string s)
{
return this.GetEncoding().GetBytes(s);
}
public int GetBytes(string s, int charIndex, int charCount, byte[] bytes, int byteIndex)
{
return this.GetEncoding().GetBytes(s, charIndex, charCount, bytes, byteIndex);
}
public string GetString(byte[] buffer)
{
return this.GetString(buffer, 0, buffer.Length);
}
public string GetString(byte[] buffer, int index, int count)
{
return this.GetEncoding().GetString(buffer, index, count);
}
#endregion
#region Private Methods
private Encoding GetEncoding()
{
switch (this.systemName)
{
case "NONE":
return Encoding.Default;
case "OCTETS":
return new BinaryEncoding();
default:
return Encoding.GetEncoding(this.systemName);
}
}
#endregion
#region Static Methods
public static CharsetCollection InitializeSupportedCharsets()
{
CharsetCollection charsets = new CharsetCollection();
// NONE
Charset.Add(charsets, 0, "NONE", 1, "NONE");
// OCTETS
Charset.Add(charsets, 1, "OCTETS", 1, "OCTETS");
// American Standard Code for Information Interchange
Charset.Add(charsets, 2, "ASCII", 1, "ascii");
// Eight-bit Unicode Transformation Format
Charset.Add(charsets, 3, "UNICODE_FSS", 3, "UTF-8");
// Shift-JIS, Japanese
Charset.Add(charsets, 5, "SJIS_0208", 2, "shift_jis");
// JIS X 0201, 0208, 0212, EUC encoding, Japanese
Charset.Add(charsets, 6, "EUCJ_0208", 2, "euc-jp");
// Windows Japanese
Charset.Add(charsets, 7, "ISO2022-JP", 2, "iso-2022-jp");
// MS-DOS United States, Australia, New Zealand, South Africa
Charset.Add(charsets, 10, "DOS437", 1, "IBM437");
// MS-DOS Latin-1
Charset.Add(charsets, 11, "DOS850", 1, "ibm850");
// MS-DOS Nordic
Charset.Add(charsets, 12, "DOS865", 1, "IBM865");
// MS-DOS Portuguese
Charset.Add(charsets, 13, "DOS860", 1, "IBM860");
// MS-DOS Canadian French
Charset.Add(charsets, 14, "DOS863", 1, "IBM863");
// ISO 8859-1, Latin alphabet No. 1
Charset.Add(charsets, 21, "ISO8859_1", 1, "iso-8859-1");
// ISO 8859-2, Latin alphabet No. 2
Charset.Add(charsets, 22, "ISO8859_2", 1, "iso-8859-2");
// Windows Korean
Charset.Add(charsets, 44, "KSC_5601", 2, "ks_c_5601-1987");
// MS-DOS Icelandic
Charset.Add(charsets, 47, "DOS861", 1, "ibm861");
// Windows Eastern European
Charset.Add(charsets, 51, "WIN1250", 1, "windows-1250");
// Windows Cyrillic
Charset.Add(charsets, 52, "WIN1251", 1, "windows-1251");
// Windows Latin-1
Charset.Add(charsets, 53, "WIN1252", 1, "windows-1252");
// Windows Greek
Charset.Add(charsets, 54, "WIN1253", 1, "windows-1253");
// Windows Turkish
Charset.Add(charsets, 55, "WIN1254", 1, "windows-1254");
// Big5, Traditional Chinese
Charset.Add(charsets, 56, "BIG_5", 2, "big5");
// GB2312, EUC encoding, Simplified Chinese
Charset.Add(charsets, 57, "GB_2312", 2, "gb2312");
// Windows Hebrew
Charset.Add(charsets, 58, "WIN1255", 1, "windows-1255");
// Windows Arabic
Charset.Add(charsets, 59, "WIN1256", 1, "windows-1256");
// Windows Baltic
Charset.Add(charsets, 60, "WIN1257", 1, "windows-1257");
return charsets;
}
private static void Add(
CharsetCollection charsets, int id, string charset, int bytesPerCharacter, string systemName)
{
charsets.Add(
id,
charset,
bytesPerCharacter,
systemName);
}
#endregion
}
}
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