ClassLibraryWeiBao/QR二维码/DataEncodation/EightBitByteEncoder.cs

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using System;
using System.Collections;

namespace Gma.QrCodeNet.Encoding.DataEncodation
{
	/// <summary>
	/// EightBitByte is a bit complicate compare to other encoding.
	/// It can accept several different encoding table from global ECI table.
	/// For different country, default encoding is different. JP use shift_jis, International spec use iso-8859-1
	/// China use ASCII which is first part of normal char table. Between 00 to 7E
	/// Korean and Thai should have their own default encoding as well. But so far I can not find their specification freely online.
	/// QrCode.Net will use international standard which is iso-8859-1 as default encoding. 
	/// And use UTF8 as suboption for any string that not belong to any char table or other encoder. 
	/// </summary>
	/// <remarks>ISO/IEC 18004:2000 Chapter 8.4.4 Page 22</remarks>
	internal class EightBitByteEncoder : EncoderBase
	{
		private const string _defaultEncoding = QRCodeConstantVariable.DefaultEncoding;
		
		internal string Encoding {get; private set;}
		/// <summary>
		/// EightBitByte encoder's encoding will change according to different region
		/// </summary>
		/// <param name="encoding">Default encoding is "iso-8859-1"</param>
		internal EightBitByteEncoder(string encoding)
			:base()
        {
			Encoding = encoding ?? _defaultEncoding;
        }
		
		internal EightBitByteEncoder()
			:base()
		{
			Encoding = _defaultEncoding;
		}
		
		internal override Mode Mode
        {
            get { return Mode.EightBitByte; }
        }

        protected byte[] EncodeContent(string content, string encoding)
        {
        	byte[] contentBytes;
        	try 
        	{
				contentBytes = System.Text.Encoding.GetEncoding(encoding).GetBytes(content);
			} catch (ArgumentException ex) {
				
				throw ex;
			}
        	return contentBytes;
        }
		
        /// <summary>
        /// Bitcount, Chapter 8.4.4, P.24
        /// </summary>
		private const int EIGHT_BIT_BYTE_BITCOUNT = 8;
		
		internal override BitList GetDataBits(string content)