private string getEncodedValueByChar(string data, Code128Subset subset)
{
DataRow[] rows = null;
if (subset == Code128Subset.SubsetA)
{
rows = C128_Code.Select("A = '" + data + "'");
if (rows.Length > 0)
{
return(rows[0]["Encoding"].ToString());
}
}
if (subset == Code128Subset.SubsetB)
{
rows = C128_Code.Select("B = '" + data + "'");
if (rows.Length > 0)
{
return(rows[0]["Encoding"].ToString());
}
}
if (subset == Code128Subset.SubsetC)
{
rows = C128_Code.Select("C = '" + data + "'");
if (rows.Length > 0)
{
return(rows[0]["Encoding"].ToString());
}
}
return(null);
return(null);
}
/// <summary>
/// Adds the supplied section and control characters to the encode.
/// </summary>
/// <param name="lastSubset"></param>
/// <param name="sectionSubset"></param>
/// <param name="sectionValue"></param>
public void EncodeSection(Code128Subset lastSubset, Code128Subset sectionSubset, string sectionValue)
{
// Add the subset select or change control symbol to the encode
string character = GetSubsetAsString(sectionSubset);
int symbol = _symbologyCharEncode[GetSubsetAsString(lastSubset) + GetSubsetAsString(sectionSubset)];
LinearPattern symbolPattern = _patternDictionary[symbol];
AddSymbolToEncode(character, 1, symbol, symbolPattern);
ZplEncode += GetZplFunction(GetSubsetAsString(lastSubset) + GetSubsetAsString(sectionSubset));
// Add FNC1 symbol if GS1-128 Barcode
if (lastSubset == Code128Subset.Null && _isGs1)
{
symbol = _symbologyCharEncode["FNC1"];
symbolPattern = _patternDictionary[symbol];
AddSymbolToEncode("F1", 1, symbol, symbolPattern);
ZplEncode += GetZplFunction("FNC1");
}
if (sectionSubset == Code128Subset.C) //Subset C encoder
{
for (int encodePosition = 0; encodePosition <= sectionValue.Length - 1; encodePosition += 2)
{
// Encode the current numeric pair symbol
character = sectionValue.Substring(encodePosition, 2);
symbol = Convert.ToInt32(character);
symbolPattern = _patternDictionary[symbol];
AddSymbolToEncode(character, 0, symbol, symbolPattern);
ZplEncode += character;
}
}
else
{
for (int encodePosition = 0; encodePosition <= sectionValue.Length - 1; encodePosition++)
{
character = sectionValue.Substring(encodePosition, 1);
symbol = _symbologyCharEncode[((int)sectionValue[encodePosition]).ToString()];
symbolPattern = _patternDictionary[symbol];
AddSymbolToEncode(character, 0, symbol, symbolPattern);
if (sectionSubset == Code128Subset.A)
{
string subsetACode = "0" + symbol.ToString();
ZplEncode += subsetACode.Substring(subsetACode.Length - 2, 2);
}
else
{
ZplEncode += character;
}
}
}
}
/// <summary>
/// Get the Code 128 subset as a string
/// </summary>
/// <param name="subset"></param>
/// <returns>Single character subset string</returns>
private string GetSubsetAsString(Code128Subset subset)
{
switch (subset)
{
case Code128Subset.A:
return("A");
case Code128Subset.B:
return("B");
case Code128Subset.C:
return("C");
case Code128Subset.Null:
return("");
}
throw new ArgumentException(subset + " is not a recognised Code128 subset", nameof(subset));
}
public Code128Encoder(Symbology symbology) : base(symbology)
{
switch (Symbology)
{
case Symbology.Code128ABC:
_suppressSubsetC = false;
StartSubset = Code128Subset.A;
Description = "Code 128 - Subset A Prioritised & Auto Subset C Selected";
break;
case Symbology.Code128BAC:
_suppressSubsetC = false;
StartSubset = Code128Subset.B;
Description = "Code 128 - Subset B Prioritised & Auto Subset C Selected";
break;
case Symbology.Code128AB:
_suppressSubsetC = true;
StartSubset = Code128Subset.A;
Description = "Code 128 - Subset A Prioritised & Subset C Suppressed";
break;
case Symbology.Code128BA:
_suppressSubsetC = true;
StartSubset = Code128Subset.B;
Description = "Code 128 - Subset B Prioritised & Subset C Suppressed";
break;
case Symbology.GS1128:
_suppressSubsetC = false;
_isGs1 = true;
StartSubset = Code128Subset.B;
Description = "GS1-128 - Subset B Prioritised & Auto Subset C Selected";
break;
default:
_suppressSubsetC = false;
StartSubset = Code128Subset.B;
Description = "Code 128 - Subset B Prioritised & Auto Subset C Selected";
break;
}
}
/// <summary>
/// Analyse the supplied section and determine the appropriate encoding.
/// </summary>
/// <param name="barcodeValue"></param>
/// <param name="startPosition"></param>
/// <param name="lastSubset"></param>
private void AnalyseSection(string barcodeValue, int startPosition, Code128Subset lastSubset)
{
Code128Subset currentSubset = Code128Subset.Null;
bool isNewSection = false;
for (int position = startPosition; position <= barcodeValue.Length - 1; position++)
{
isNewSection = true;
int asciiCode = barcodeValue[position];
switch (asciiCode)
{
case var code when code <= 31: // Control characters that are only supported by subset A.
if (currentSubset == Code128Subset.Null | currentSubset == Code128Subset.A)
{
currentSubset = Code128Subset.A;
}
else
{
EncodeSection(lastSubset, currentSubset, barcodeValue.Substring(startPosition, position - startPosition));
AnalyseSection(barcodeValue, position, currentSubset);
return;
}
break;
case var code when code >= 96: // Lower case characters that are only supported by subset C
if (currentSubset == Code128Subset.Null | currentSubset == Code128Subset.B)
{
currentSubset = Code128Subset.B;
}
else
{
EncodeSection(lastSubset, currentSubset, barcodeValue.Substring(startPosition, position - startPosition));
AnalyseSection(barcodeValue, position, currentSubset);
return;
}
break;
case var code when code >= 48 && code <= 57: // Numeric characters, that may benefit from using subset C.
if (_suppressSubsetC)
{
break;
}
int subsetCSequence = GetSubsetCSequenceCount(barcodeValue, position);
if (subsetCSequence >= 1)
{
if (position >= 1)
{
if (currentSubset == Code128Subset.Null)
{
currentSubset = StartSubset;
}
EncodeSection(lastSubset, currentSubset, barcodeValue.Substring(startPosition, position - startPosition));
lastSubset = currentSubset;
}
currentSubset = Code128Subset.C;
EncodeSection(lastSubset, currentSubset, barcodeValue.Substring(position, subsetCSequence));
AnalyseSection(barcodeValue, position + subsetCSequence, currentSubset);
return;
}
break;
}
}
if (isNewSection)
{
if (currentSubset == Code128Subset.Null)
{
currentSubset = StartSubset;
}
EncodeSection(lastSubset, currentSubset, barcodeValue.Substring(startPosition, barcodeValue.Length - startPosition));
}
AddCheckDigit();
AddStopSymbol();
SetMinXDimension();
SetMinBarcodeHeight();
}
