public static VersionCheckStatus VersionCheck(int versionNum, int numDataBits, Mode mode, ErrorCorrectionLevel level, string encodingName)
{
int TotalDataBits = numDataBits;
ECISet eciSet = new ECISet(ECISet.AppendOption.NameToValue);
if (mode == Mode.EightBitByte)
{
if (encodingName != DEFAULT_ENCODING)
{
int eciValue = eciSet.GetECIValueByName(encodingName);
TotalDataBits += ECISet.NumOfECIHeaderBits(eciValue);
}
}
int bitCharCountIndicator = CharCountIndicatorTable.GetBitCountInCharCountIndicator(mode, versionNum);
TotalDataBits += (4 + bitCharCountIndicator);
int expectContainer = DataBits(versionNum, level);
int lowerContainer = versionNum == 1 ? 0 : DataBits(versionNum - 1, level);
if (expectContainer < TotalDataBits)
{
return(VersionCheckStatus.SmallerThanExpect);
}
else if (lowerContainer >= TotalDataBits)
{
return(VersionCheckStatus.LargerThanExpect);
}
else
{
return(VersionCheckStatus.Efficient);
}
}
private static string EightBitByteRecognision(string content, int startPos, int contentLength)
{
if(string.IsNullOrEmpty(content))
throw new ArgumentNullException("content", "Input content is null or empty");
ECISet eciSets = new ECISet(ECISet.AppendOption.NameToValue);
Dictionary<string, int> eciSet = eciSets.GetECITable();
//we will not check for utf8 encoding.
eciSet.Remove(QRCodeConstantVariable.UTF8Encoding);
eciSet.Remove(QRCodeConstantVariable.DefaultEncoding);
int scanPos = startPos;
//default encoding as priority
scanPos = ModeEncodeCheck.TryEncodeEightBitByte(content, QRCodeConstantVariable.DefaultEncoding, scanPos, contentLength);
if(scanPos == -1)
return QRCodeConstantVariable.DefaultEncoding;
foreach(KeyValuePair<string, int> kvp in eciSet)
{
scanPos = ModeEncodeCheck.TryEncodeEightBitByte(content, kvp.Key, scanPos, contentLength);
if(scanPos == -1)
{
return kvp.Key;
}
}
if(scanPos == -1)
throw new ArgumentException("foreach Loop check give wrong result.");
else
return QRCodeConstantVariable.UTF8Encoding;
}
internal override BitList GetDataBits(string content)
{
var eciSet = new ECISet(ECISet.AppendOption.NameToValue);
if (!eciSet.ContainsECIName(Encoding))
{
throw new ArgumentOutOfRangeException(
nameof(Encoding),
$"Current ECI table does not support this encoding. Please check {nameof(ECISet)} class for more info.");
}
byte[] contentBytes = EncodeContent(content, Encoding);
return(GetDataBitsByByteArray(contentBytes, Encoding));
}
/// <summary>
/// Eights the bit byte recognision.
/// </summary>
/// <param name="content">The content.</param>
/// <param name="startPos">The start pos.</param>
/// <param name="contentLength">Length of the content.</param>
/// <returns></returns>
/// <remarks></remarks>
private static string EightBitByteRecognision(string content, int startPos, int contentLength)
{
if (string.IsNullOrEmpty(content))
{
throw new ArgumentNullException("content", "Input content is null or empty");
}
var eciSets = new ECISet(ECISet.AppendOption.NameToValue);
Dictionary <string, int> eciSet = eciSets.GetECITable();
//we will not check for utf8 encoding.
eciSet.Remove(QRCodeConstantVariable.UTF8Encoding);
eciSet.Remove(QRCodeConstantVariable.DefaultEncoding);
int scanPos = startPos;
//default encoding as priority
scanPos = ModeEncodeCheck.TryEncodeEightBitByte(content, QRCodeConstantVariable.DefaultEncoding, scanPos,
contentLength);
if (scanPos == -1)
{
return(QRCodeConstantVariable.DefaultEncoding);
}
foreach (var kvp in eciSet)
{
scanPos = ModeEncodeCheck.TryEncodeEightBitByte(content, kvp.Key, scanPos, contentLength);
if (scanPos == -1)
{
return(kvp.Key);
}
}
if (scanPos == -1)
{
throw new ArgumentException("foreach Loop check give wrong result.");
}
else
{
return(QRCodeConstantVariable.UTF8Encoding);
}
}
/// <summary>
/// Determine which version to use
/// </summary>
/// <param name="dataBitsLength">Number of bits for encoded content</param>
/// <param name="mode">The mode.</param>
/// <param name="level">The level.</param>
/// <param name="encodingName">Encoding name for EightBitByte</param>
/// <returns>VersionDetail and ECI</returns>
/// <remarks></remarks>
internal static VersionControlStruct InitialSetup(int dataBitsLength, Mode mode, ErrorCorrectionLevel level,
string encodingName)
{
int totalDataBits = dataBitsLength;
bool containECI = false;
var eciHeader = new BitList();
//Check ECI header
if (mode == Mode.EightBitByte)
{
if (encodingName != DEFAULT_ENCODING && encodingName != QRCodeConstantVariable.UTF8Encoding)
{
var eciSet = new ECISet(ECISet.AppendOption.NameToValue);
int eciValue = eciSet.GetECIValueByName(encodingName);
totalDataBits += ECISet.NumOfECIHeaderBits(eciValue);
eciHeader = eciSet.GetECIHeader(encodingName);
containECI = true;
}
}
//Determine which version group it belong to
int searchGroup = DynamicSearchIndicator(totalDataBits, level, mode);
int[] charCountIndicator = CharCountIndicatorTable.GetCharCountIndicatorSet(mode);
totalDataBits += (NUM_BITS_MODE_INDICATOR + charCountIndicator[searchGroup]);
int lowerSearchBoundary = searchGroup == 0 ? 1 : (VERSION_GROUP[searchGroup - 1] + 1);
int higherSearchBoundary = VERSION_GROUP[searchGroup];
//Binary search to find proper version
int versionNum = BinarySearch(totalDataBits, level, lowerSearchBoundary, higherSearchBoundary);
VersionControlStruct vcStruct = FillVCStruct(versionNum, level, encodingName);
vcStruct.isContainECI = containECI;
vcStruct.ECIHeader = eciHeader;
return(vcStruct);
}
/// <summary>
/// Determine which version to use
/// </summary>
/// <param name="dataBitsLength">Number of bits for encoded content</param>
/// <param name="encodingName">Encoding name for EightBitByte</param>
/// <returns>VersionDetail and ECI</returns>
internal static VersionControlStruct InitialSetup(int dataBitsLength, ErrorCorrectionLevel level, string encodingName)
{
int totalDataBits = dataBitsLength;
bool containECI = false;
BitList eciHeader = new();
if (encodingName is not DefaultEncoding and not QRCodeConstantVariable.UTF8Encoding)
{
ECISet eciSet = new(ECISet.AppendOption.NameToValue);
int eciValue = eciSet.GetECIValueByName(encodingName);
totalDataBits += ECISet.NumOfECIHeaderBits(eciValue);
eciHeader = eciSet.GetECIHeader(encodingName);
containECI = true;
}
// Determine which version group it belong to
int searchGroup = DynamicSearchIndicator(totalDataBits, level);
int[] charCountIndicator = CharCountIndicatorTable.GetCharCountIndicatorSet();
totalDataBits += (NumBitsModeIndicator + charCountIndicator[searchGroup]);
int lowerSearchBoundary = searchGroup == 0 ? 1 : (VERSION_GROUP[searchGroup - 1] + 1);
int higherSearchBoundary = VERSION_GROUP[searchGroup];
// Binary search to find proper version
int versionNum = BinarySearch(totalDataBits, level, lowerSearchBoundary, higherSearchBoundary);
VersionControlStruct vcStruct = FillVCStruct(versionNum, level);
vcStruct.IsContainECI = containECI;
vcStruct.ECIHeader = eciHeader;
return(vcStruct);
}
