private int GetVersion(int length, EncodingMode encMode, EccLevel eccLevel)
{
var version = capacityTable
.Where(x => x.Details.Any(y => (y.ErrorCorrectionLevel == eccLevel && y.CapacityDict[encMode] >= Convert.ToInt32(length))))
.Select(x => new
{
version = x.Version,
capacity = x.Details.Single(y => y.ErrorCorrectionLevel == eccLevel).CapacityDict[encMode]
}).Min(x => x.version);
return version;
}
public QrCode CreateQrCode(string plainText, EccLevel eccLevel, bool utf8Bom = false)
{
var encoding = GetEncodingFromPlaintext(plainText);
var codedText = PlainTextToBinary(plainText, encoding, utf8Bom);
var dataInputLength = GetDataLength(encoding, plainText, codedText);
var version = GetVersion(dataInputLength, encoding, eccLevel);
var modeIndicator = DecToBin((int)encoding, 4);
var countIndicator = DecToBin(dataInputLength, GetCountIndicatorLength(version, encoding));
var bitString = modeIndicator + countIndicator;
bitString += codedText;
//Fill up data code word
var eccInfo = capacityEccTable.Single(x => x.Version == version && x.ErrorCorrectionLevel.Equals(eccLevel));
var dataLength = eccInfo.TotalDataCodewords * 8;
var lengthDiff = dataLength - bitString.Length;
if (lengthDiff > 0)
bitString += new string('0', Math.Min(lengthDiff, 4));
if ((bitString.Length % 8) != 0)
bitString += new string('0', 8 - (bitString.Length % 8));
while (bitString.Length < dataLength)
bitString += "1110110000010001";
if (bitString.Length > dataLength)
bitString = bitString.Substring(0, dataLength);
//Calculate error correction words
var codeWordWithEcc = new List<CodewordBlock>();
for (var i = 0; i < eccInfo.BlocksInGroup1; i++)
{
var bitStr = bitString.Substring(i * eccInfo.CodewordsInGroup1 * 8, eccInfo.CodewordsInGroup1 * 8);
codeWordWithEcc.Add(new CodewordBlock()
{
BitString = bitStr,
BlockNumber = i + 1,
GroupNumber = 1,
CodeWords = BinaryStringToBitBlockList(bitStr),
ECCWords = CalculateEccWords(bitStr, eccInfo)
});
}
bitString = bitString.Substring(eccInfo.BlocksInGroup1 * eccInfo.CodewordsInGroup1 * 8);
for (var i = 0; i < eccInfo.BlocksInGroup2; i++)
{
var bitStr = bitString.Substring(i * eccInfo.CodewordsInGroup2 * 8, eccInfo.CodewordsInGroup2 * 8);
codeWordWithEcc.Add(new CodewordBlock()
{
BitString = bitStr,
BlockNumber = i + 1,
GroupNumber = 2,
CodeWords = BinaryStringToBitBlockList(bitStr),
ECCWords = CalculateEccWords(bitStr, eccInfo)
});
}
//Interleave code words
var interleavedWordsSb = new StringBuilder();
for (var i = 0; i < Math.Max(eccInfo.CodewordsInGroup1, eccInfo.CodewordsInGroup2); i++)
{
var i1 = i;
foreach (var codeBlock in codeWordWithEcc.Where(codeBlock => codeBlock.CodeWords.Count > i1))
interleavedWordsSb.Append(codeBlock.CodeWords[i]);
}
for (var i = 0; i < eccInfo.ECCPerBlock; i++)
{
var i1 = i;
foreach (var codeBlock in codeWordWithEcc.Where(codeBlock => codeBlock.ECCWords.Count > i1))
interleavedWordsSb.Append(codeBlock.ECCWords[i]);
}
interleavedWordsSb.Append(new string('0', remainderBits[version - 1]));
var interleavedData = interleavedWordsSb.ToString();
//Place interleaved data on module matrix
var qr = new QrCode(version);
var blockedModules = new List<Rectangle>();
ModulePlacer.PlaceFinderPatterns(ref qr, ref blockedModules);
ModulePlacer.ReserveSeperatorAreas(qr.ModuleMatrix.Count, ref blockedModules);
ModulePlacer.PlaceAlignmentPatterns(ref qr, alignmentPatternTable.Where(x => x.Version == version).Select(x => x.PatternPositions).First(), ref blockedModules);
ModulePlacer.PlaceTimingPatterns(ref qr, ref blockedModules);
ModulePlacer.PlaceDarkModule(ref qr, version, ref blockedModules);
ModulePlacer.ReserveVersionAreas(qr.ModuleMatrix.Count, version, ref blockedModules);
ModulePlacer.PlaceDataWords(ref qr, interleavedData, ref blockedModules);
var maskVersion = ModulePlacer.MaskCode(ref qr, version, ref blockedModules);
var formatStr = GetFormatString(eccLevel, maskVersion);
ModulePlacer.PlaceFormat(ref qr, formatStr);
if (version >= 7)
{
var versionString = GetVersionString(version);
ModulePlacer.PlaceVersion(ref qr, versionString);
}
ModulePlacer.AddQuietZone(ref qr);
return qr;
}
private string GetFormatString(EccLevel level, int maskVersion)
{
var generator = "10100110111";
var fStrMask = "101010000010010";
var fStr = (level == EccLevel.L) ? "01" : (level == EccLevel.M) ? "00" : (level == EccLevel.Q) ? "11" : "10";
fStr += DecToBin(maskVersion, 3);
var fStrEcc = fStr.PadRight(15, '0').TrimStart('0');
while (fStrEcc.Length > 10)
{
var sb = new StringBuilder();
generator = generator.PadRight(fStrEcc.Length, '0');
for (var i = 0; i < fStrEcc.Length; i++)
sb.Append((Convert.ToInt32(fStrEcc[i]) ^ Convert.ToInt32(generator[i])).ToString());
fStrEcc = sb.ToString().TrimStart('0');
}
fStrEcc = fStrEcc.PadLeft(10, '0');
fStr += fStrEcc;
var sbMask = new StringBuilder();
for (var i = 0; i < fStr.Length; i++)
sbMask.Append((Convert.ToInt32(fStr[i]) ^ Convert.ToInt32(fStrMask[i])).ToString());
return sbMask.ToString();
}
