ClassLibraryWeiBao/QR二维码/DataEncodation/DataEncode.cs

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using System;
using Gma.QrCodeNet.Encoding.DataEncodation.InputRecognition;
using Gma.QrCodeNet.Encoding.Versions;
using Gma.QrCodeNet.Encoding.Terminate;
using System.Collections.Generic;

namespace Gma.QrCodeNet.Encoding.DataEncodation
{
	/// <remarks>ISO/IEC 18004:2000 Chapter 8.1 Page 14
	/// DataEncode is combination of Data analysis and Data encodation step.
	/// Which uses sub functions under several different namespaces</remarks>
	internal static class DataEncode
	{
		internal static EncodationStruct Encode(string content, ErrorCorrectionLevel ecLevel)
		{
			RecognitionStruct recognitionResult = InputRecognise.Recognise(content);
			EncoderBase encoderBase = CreateEncoder(recognitionResult.Mode, recognitionResult.EncodingName);
			
			BitList encodeContent = encoderBase.GetDataBits(content);
			
			int encodeContentLength = encodeContent.Count;
			
			VersionControlStruct vcStruct = 
				VersionControl.InitialSetup(encodeContentLength, recognitionResult.Mode, ecLevel, recognitionResult.EncodingName);
			
			BitList dataCodewords = new BitList();
			//Eci header
			if(vcStruct.isContainECI && vcStruct.ECIHeader != null)
				dataCodewords.Add(vcStruct.ECIHeader);
			//Header
			dataCodewords.Add(encoderBase.GetModeIndicator());
			int numLetter = recognitionResult.Mode == Mode.EightBitByte ? encodeContentLength >> 3 : content.Length;
			dataCodewords.Add(encoderBase.GetCharCountIndicator(numLetter, vcStruct.VersionDetail.Version));
			//Data
			dataCodewords.Add(encodeContent);
			//Terminator Padding
			dataCodewords.TerminateBites(dataCodewords.Count, vcStruct.VersionDetail.NumDataBytes);
			
			int dataCodewordsCount = dataCodewords.Count;
			if((dataCodewordsCount & 0x7) != 0)
				throw new ArgumentException("data codewords is not byte sized.");
			else if(dataCodewordsCount >> 3 != vcStruct.VersionDetail.NumDataBytes)
			{
				throw new ArgumentException("datacodewords num of bytes not equal to NumDataBytes for current version");
			}
			
			EncodationStruct encStruct = new EncodationStruct(vcStruct);
			encStruct.Mode = recognitionResult.Mode;
			encStruct.DataCodewords = dataCodewords;
			return encStruct;
		}


        internal static EncodationStruct Encode(IEnumerable<byte> content, ErrorCorrectionLevel eclevel)
        {
            EncoderBase encoderBase = CreateEncoder(Mode.EightBitByte, QRCodeConstantVariable.DefaultEncoding);

            BitList encodeContent = new BitList(content);

            int encodeContentLength = encodeContent.Count;