private string GetNextChar(string code, ref int index, ref HCCode128Encoding encoding)
{
int vLen = code.Length - 1;
if (index > vLen)
{
return("");
}
string vResult = "", vC = "";
if ((code[index] == '&') && (index + 2 <= vLen) && (code[index + 2] == ';'))
{
vC = code[index + 1].ToString().ToUpper();
if ((vC == "A") || (vC == "B") || (vC == "C") ||
(vC == "S") || (vC == "1") || (vC == "2") ||
(vC == "3") || (vC == "4"))
{
index += 3;
vResult = "&" + vC + ";";
return(vResult);
}
}
if ((encoding == HCCode128Encoding.encC) && (index + 1 <= vLen))
{
vResult = code.Substring(index, 2);
index += 2;
return(vResult);
}
vResult = code.Substring(index, 1);
index++;
return(vResult);
}
private string Encode(string code)
{
code = this.StripControlCodes(code, false);
string vResult = "";
int vIndex = 0;
HCCode128Encoding vEncoding = HCCode128Encoding.encNone;
int vLen = code.Length;
while (vIndex < vLen)
{
vResult = vResult + this.GetNextPortion(code, ref vIndex, ref vEncoding);
}
return(vResult);
}
private string StripControlCodes(string code, bool stripFNCodes)
{
string vResult = "";
int vIndex = 0, vLen = code.Length;
HCCode128Encoding vEncoding = HCCode128Encoding.encNone;
string vNextChar = "";
while (vIndex < vLen)
{
vNextChar = this.GetNextChar(code, ref vIndex, ref vEncoding);
if ((vNextChar != "&A;") && (vNextChar != "&B;") && (vNextChar != "&C;") && (vNextChar != "&S;"))
{
if ((!stripFNCodes) || ((vNextChar != "&1;") && (vNextChar != "&2;") && (vNextChar != "&3;") && (vNextChar != "&4;")))
{
vResult = vResult + vNextChar;
}
}
}
return(vResult);
}
private string GetNextPortion(string code, ref int aindex, ref HCCode128Encoding aencoding)
{
int vLen = code.Length;
if (aindex > vLen - 1)
{
return("");
}
int vIndexa, vIndexb, numDigits, numChars;
HCCode128Encoding firstCharEncoding, nextCharEncoding;
string prefix, vC = "", vResult = "";
if ((code[aindex] == '&') && (aindex + 2 < vLen) && (code[aindex + 2] == ';'))
{
vC = code[aindex + 1].ToString().ToUpper();
if ((vC == "A") || (vC == "B") || (vC == "C") || (vC == "S") || (vC == "1") || (vC == "2") || (vC == "3") || (vC == "4"))
{
vC = code.Substring(aindex, 3);
aindex += 3;
}
else
{
vC = "";
}
}
vIndexa = this.FindCodeA(code[aindex].ToString());
vIndexb = this.FindCodeB(code[aindex].ToString());
firstCharEncoding = HCCode128Encoding.encA;
if ((vIndexa == -1) && (vIndexb != -1))
{
firstCharEncoding = HCCode128Encoding.encB;
}
else
if ((vIndexa != -1) && (vIndexb != -1))
{
firstCharEncoding = HCCode128Encoding.encAorB;
}
numDigits = 0;
if (this.IsFourOrMoreDigits(code, aindex, ref numDigits))
{
firstCharEncoding = HCCode128Encoding.encC;
}
if (firstCharEncoding == HCCode128Encoding.encC)
{
numDigits = (numDigits / 2) * 2;
vResult = code.Substring(aindex, numDigits);
aindex += numDigits;
if (aencoding != HCCode128Encoding.encC)
{
vResult = "&C;" + vC + vResult;
}
else
{
vResult = vC + vResult;
}
aencoding = HCCode128Encoding.encC;
return(vResult);
}
numChars = 1;
while (aindex + numChars < vLen)
{
vIndexa = this.FindCodeA(code[aindex + numChars].ToString());
vIndexb = this.FindCodeB(code[aindex + numChars].ToString());
nextCharEncoding = HCCode128Encoding.encA;
if ((vIndexa == -1) && (vIndexb != -1))
{
nextCharEncoding = HCCode128Encoding.encB;
}
else
if ((vIndexa != -1) && (vIndexb != -1))
{
nextCharEncoding = HCCode128Encoding.encAorB;
}
if (this.IsFourOrMoreDigits(code, aindex + numChars, ref numDigits))
{
nextCharEncoding = HCCode128Encoding.encC;
}
if ((nextCharEncoding != HCCode128Encoding.encC) && (nextCharEncoding != firstCharEncoding))
{
if (firstCharEncoding == HCCode128Encoding.encAorB)
{
firstCharEncoding = nextCharEncoding;
}
else
if (nextCharEncoding == HCCode128Encoding.encAorB)
{
nextCharEncoding = firstCharEncoding;
}
}
if (firstCharEncoding != nextCharEncoding)
{
break;
}
numChars++;
}
if (firstCharEncoding == HCCode128Encoding.encAorB)
{
firstCharEncoding = HCCode128Encoding.encB;
}
if (firstCharEncoding == HCCode128Encoding.encA)
{
prefix = "&A;";
}
else
{
prefix = "&B;";
}
if ((aencoding != firstCharEncoding) && (numChars == 1) &&
((aencoding == HCCode128Encoding.encA) || (aencoding == HCCode128Encoding.encB)) &&
((firstCharEncoding == HCCode128Encoding.encA) || (firstCharEncoding == HCCode128Encoding.encB)))
{
prefix = "&S;";
}
else
{
aencoding = firstCharEncoding;
}
vResult = prefix + vC + code.Substring(aindex, numChars);
aindex += numChars;
return(vResult);
}
private string GetCode(string text)
{
text = text.Replace("&FNC1;", "&1;");
text = this.Encode(text);
HCCode128Encoding vEncoding = HCCode128Encoding.encNone;
int vIndex = 0, vChecksum, vCodewordPos, vIdx;
string nextChar = this.GetNextChar(text, ref vIndex, ref vEncoding);
string startCode = "";
if (nextChar == "&A;")
{
vEncoding = HCCode128Encoding.encA;
vChecksum = 103;
startCode = Table128[103, 3];
}
else if (nextChar == "&B;")
{
vEncoding = HCCode128Encoding.encB;
vChecksum = 104;
startCode = Table128[104, 3];
}
else if (nextChar == "&C;")
{
vEncoding = HCCode128Encoding.encC;
vChecksum = 105;
startCode = Table128[105, 3];
}
else
{
throw new Exception("无效的条码内容！");
}
string vResult = startCode;
vCodewordPos = 1;
int vLen = text.Length;
while (vIndex < vLen)
{
nextChar = this.GetNextChar(text, ref vIndex, ref vEncoding);
if (nextChar == "&A;")
{
vEncoding = HCCode128Encoding.encA;
vIdx = 101;
}
else
if (nextChar == "&B;")
{
vEncoding = HCCode128Encoding.encB;
vIdx = 100;
}
else
if (nextChar == "&C;")
{
vEncoding = HCCode128Encoding.encC;
vIdx = 99;
}
else
if (nextChar == "&S;")
{
if (vEncoding == HCCode128Encoding.encA)
{
vEncoding = HCCode128Encoding.encB;
}
else
{
vEncoding = HCCode128Encoding.encA;
}
vIdx = 98;
}
else if (nextChar == "&1;")
{
vIdx = 102;
}
else if (nextChar == "&2;")
{
vIdx = 97;
}
else if (nextChar == "&3;")
{
vIdx = 96;
}
else if (nextChar == "&4;")
{
if (vEncoding == HCCode128Encoding.encA)
{
vIdx = 101;
}
else
{
vIdx = 100;
}
}
else
{
if (vEncoding == HCCode128Encoding.encA)
{
vIdx = this.FindCodeA(nextChar[0].ToString());
}
else if (vEncoding == HCCode128Encoding.encB)
{
vIdx = this.FindCodeB(nextChar[0].ToString());
}
else
{
vIdx = this.FindCodeC(nextChar);
}
}
if (vIdx < 0)
{
throw new Exception("无效的条码内容！");
}
vResult = vResult + Table128[vIdx, 3];
vChecksum += vIdx * vCodewordPos;
vCodewordPos++;
if (nextChar == "&S;")
{
if (vEncoding == HCCode128Encoding.encA)
{
vEncoding = HCCode128Encoding.encB;
}
else
{
vEncoding = HCCode128Encoding.encA;
}
}
}
vChecksum = vChecksum % 103;
vResult = vResult + Table128[vChecksum, 3];
vResult = vResult + "2331112";
vResult = this.Convert(vResult);
return(vResult);
}
