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);
}
}
/// <summary>
/// Decide which version group it belong to
/// </summary>
/// <param name="numBits">number of bits for bitlist where it contain DataBits encode from input content and ECI header</param>
/// <param name="level">Error correction level</param>
/// <param name="mode">Mode</param>
/// <returns>Version group index for VERSION_GROUP</returns>
/// <remarks></remarks>
private static int DynamicSearchIndicator(int numBits, ErrorCorrectionLevel level, Mode mode)
{
int[] charCountIndicator = CharCountIndicatorTable.GetCharCountIndicatorSet(mode);
int totalBits = 0;
int loopLength = VERSION_GROUP.Length;
for (int i = 0; i < loopLength; i++)
{
totalBits = numBits + NUM_BITS_MODE_INDICATOR + charCountIndicator[i];
QRCodeVersion version = VersionTable.GetVersionByNum(VERSION_GROUP[i]);
int numECCodewords = version.GetECBlocksByLevel(level).NumErrorCorrectionCodewards;
int dataCodewords = version.TotalCodewords - numECCodewords;
if (totalBits <= dataCodewords * 8)
{
return(i);
}
}
throw new InputOutOfBoundaryException(string.Format("QRCode do not have enough space for {0} bits",
(numBits + NUM_BITS_MODE_INDICATOR +
charCountIndicator[2])));
}
/// <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>
/// Decide which version group it belong to
/// </summary>
/// <param name="numBits">Number of bits for bitlist where it contain DataBits encode from input content and ECI header</param>
/// <param name="level">Error correction level</param>
/// <returns>Version group index for VERSION_GROUP</returns>
private static int DynamicSearchIndicator(int numBits, ErrorCorrectionLevel level)
{
int[] charCountIndicator = CharCountIndicatorTable.GetCharCountIndicatorSet();
int loopLength = VERSION_GROUP.Length;
for (int i = 0; i < loopLength; i++)
{
int totalBits = numBits + NumBitsModeIndicator + charCountIndicator[i];
QRCodeVersion version = VersionTable.GetVersionByNum(VERSION_GROUP[i]);
int numECCodewords = version.GetECBlocksByLevel(level).NumErrorCorrectionCodewards;
int dataCodewords = version.TotalCodewords - numECCodewords;
if (totalBits <= dataCodewords * 8)
{
return i;
}
}
throw new InputOutOfBoundaryException($"QRCode do not have enough space for {(numBits + NumBitsModeIndicator + charCountIndicator[2])} bits");
}
/// <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);
}
protected override int GetBitCountInCharCountIndicator(int version) => CharCountIndicatorTable.GetBitCountInCharCountIndicator(version);
