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Optimize breaking up data for encoding method in Code128 dynamic mode #127

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Optimize breaking up data for encoding method in Code128 dynamic mode #127

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ef5aad6
Optimize breaking up data for encoding method in Code128 dynamic mode
Badkoubehei Apr 16, 2021
8f49b10
Fix typo in comment
Badkoubehei Apr 16, 2021
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57 changes: 40 additions & 17 deletions BarcodeStandard/Symbologies/Code128.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -271,7 +271,7 @@ private string CalculateCheckDigit()
}
private void BreakUpDataForEncoding()
{
var temp = "";
var numericSequence = "";
var tempRawData = Raw_Data;

//breaking the raw data up for code A and code B will mess up the encoding
Expand Down Expand Up @@ -316,35 +316,58 @@ private void BreakUpDataForEncoding()
{
if (Char.IsNumber(c))
{
if (temp == "")
{
temp += c;
}//if
else
{
temp += c;
_FormattedData.Add(temp);
temp = "";
}//else
numericSequence += c;
}//if
else
{
if (temp != "")
if (numericSequence != "")
{
_FormattedData.Add(temp);
temp = "";
AddNumericSequenceToFormattedData(numericSequence);
numericSequence = "";
}//if
_FormattedData.Add(c.ToString());
}//else
}//foreach

//if something is still in temp go ahead and push it onto the queue
if (temp != "")
if (numericSequence != "")
{
_FormattedData.Add(temp);
temp = "";
AddNumericSequenceToFormattedData(numericSequence);
}//if
}

private void AddNumericSequenceToFormattedData(string sequence)
{
//In order to optimize the encoded data length, only numeric sequences with length 3 or more must be encoded in mode C. Shorter sequences must be encoded in mode A or B.
if (sequence.Length < 3)
{
foreach (var charcter in sequence)
{
_FormattedData.Add(charcter.ToString());
}
}
else
{
int i;

//If the sequence length is odd, it is more optimize to encode the first number in mode A or B (not the last number. Because encoding the last number will need another mode switching)
if (sequence.Length % 2 == 0)
{
i = 0;
}
else
{
_FormattedData.Add(sequence[0].ToString());
i = 1;
}

for (; i < sequence.Length; i += 2)
{
_FormattedData.Add(sequence.Substring(i, 2));
}
}
}

private void InsertStartandCodeCharacters()
{
DataRow CurrentCodeSet = null;
Expand Down