/// <summary>
/// Returns implementation of "Code 128" barcode drawing.
/// Supported characters are all from 7-bit ASCII.
/// No start/end characters are supported.
/// </summary>
/// <param name="value">Value.</param>
public static BarcodeImage GetNewCode128(string value)
{
BarcodeImage barcode = new BarcodeImage();
barcode.InitCode128();
barcode.Value = value;
barcode.ValueEncoder = Code128ValueEncoder;
barcode.ValueEncoder.Invoke(barcode);
return(barcode);
}
/// <summary>
/// Returns implementation of "Codabar" barcode drawing.
/// Also known as "NW-7", "USD-4" and "Code 2 of 7".
/// Supported characters are: 0-9 - $ : / . +.
/// Supported start/end characters are: A-D.
/// </summary>
/// <param name="startCharacter">Starting character.</param>
/// <param name="value">Value.</param>
/// <param name="endCharacter">Ending character.</param>
public static BarcodeImage GetNewCodabar(char startCharacter, string value, char endCharacter)
{
BarcodeImage barcode = new BarcodeImage();
barcode.InitCodabar();
barcode.StartCharacter = startCharacter;
barcode.EndCharacter = endCharacter;
barcode.Value = value;
barcode.ValueEncoder = CodabarValueEncoder;
barcode.ValueEncoder.Invoke(barcode);
return(barcode);
}
}//GetCode128BestCodeSet
private static int GetCode128CharPos(BarcodeImage barcode, string value, int codeTableIndex)
{
System.Collections.Generic.Dictionary <int, string> .Enumerator iMapping = barcode._code128MappingLookup[codeTableIndex].GetEnumerator();
while (iMapping.MoveNext())
{
if (iMapping.Current.Value == value)
{
return(iMapping.Current.Key);
} //if
} //while
return(-1);
} //GetCode128CharPos
private static void Code128ValueEncoder(BarcodeImage barcode)
{
List <int> ev = new List <int>();
int startCodeSet = GetCode128BestCodeSet(barcode, barcode.Value, -1);
int checksum = A_STARTA + startCodeSet;
ev.AddRange(barcode._code128EncodingLookup[(byte)(A_STARTA + startCodeSet)]);
int codeSet = startCodeSet;
int j = 1;
for (int i = 0; i < barcode.Value.Length; i++)
{
int tmpCharIndex;
int tmpOldCodeSet = codeSet;
codeSet = GetCode128BestCodeSet(barcode, barcode.Value.Substring(i, barcode._value.Length - i), tmpOldCodeSet);
if (codeSet == 2)
{
tmpCharIndex = GetCode128CharPos(barcode, barcode.Value.Substring(i, 2), codeSet);
}
else
{
tmpCharIndex = GetCode128CharPos(barcode, barcode.Value.Substring(i, 1), codeSet);
}//if
if (codeSet != tmpOldCodeSet)
{
ev.AddRange(barcode._code128EncodingLookup[101 - codeSet]);
checksum += j * (101 - codeSet);
j += 1;
}//if
ev.AddRange(barcode._code128EncodingLookup[tmpCharIndex]);
checksum += j * tmpCharIndex;
if (codeSet == 2)
{
i++;
}
j += 1;
}//for(i)
ev.AddRange(barcode._code128EncodingLookup[checksum % 103]);
ev.AddRange(barcode._code128EncodingLookup[A_STOP]);
barcode.EncodedValue = ev.ToArray();
}
private static void CodabarValueEncoder(BarcodeImage barcode)
{
var ev = new List <int>();
ev.AddRange(barcode._codabarStartStopEncoding[barcode.StartCharacter]);
ev.Add(0);
for (int i = 0; i < barcode.Value.Length; i++)
{
ev.AddRange(barcode._codabarValueEncoding[barcode.Value[i]]);
ev.Add(0);
}
ev.AddRange(barcode._codabarStartStopEncoding[barcode.EndCharacter]);
barcode.EncodedValue = ev.ToArray();
}
private static int GetCode128BestCodeSet(BarcodeImage barcode, string value, int currentCodeSetIndex)
{
int[] tmpCount = { 0, 0, 0 };
int i;
for (i = 0; i < value.Length; i++)
{
if (GetCode128CharPos(barcode, value.Substring(i, 1), 0) == -1)
{
break;
}
}//for i
tmpCount[0] = i;
for (i = 0; i < value.Length; i++)
{
if (GetCode128CharPos(barcode, value.Substring(i, 1), 1) == -1)
{
break;
}
}//for i
tmpCount[1] = i;
for (i = 0; i < value.Length - 1; i++)
{
if (GetCode128CharPos(barcode, value.Substring(i, 2), 2) == -1)
{
break;
}
}//for i
tmpCount[2] = i * 2;
switch (currentCodeSetIndex)
{
case 0:
if (tmpCount[0] > 0)
{
tmpCount[0] += 1;
}
break;
case 1:
if (tmpCount[1] > 0)
{
tmpCount[1] += 1;
}
break;
case 2:
if (tmpCount[2] > 0)
{
tmpCount[2] += 2;
}
break;
}//switch
int tmpCountMax = tmpCount[0];
int tmpCountMaxIndex = 0;
if (tmpCount[1] > tmpCountMax)
{
tmpCountMax = tmpCount[1]; tmpCountMaxIndex = 1;
}
if (tmpCount[2] > tmpCountMax)
{
tmpCountMax = tmpCount[2]; tmpCountMaxIndex = 2;
}
return(tmpCountMaxIndex);
}//GetCode128BestCodeSet
