// сбросить настройки
protected void reset()
{
prefixIndex = 0;
suffixIndex = 0;
barcode = "";
status = BarcodeReadStatus.Wait;
}
/// <summary>
/// Посимвольный анализ
/// Поиск сочетаний суффикса и префикса, передача полученного кода
/// </summary>
/// <param name="data">Код символа</param>
protected void Read(Int32 data)
{
if (!connect)
{
reset();
return;
}
switch (status)
{
case BarcodeReadStatus.Wait:
if (prefix == null)
{
status = BarcodeReadStatus.ReadBarcode;
}
else
{
status = BarcodeReadStatus.ReadPrefix;
}
Read(data);
break;
case BarcodeReadStatus.ReadPrefix:
if (prefix == null)
{
status = BarcodeReadStatus.ReadBarcode;
Read(data);
break;
}
else if (prefix[prefixIndex] == data)
{
prefixIndex++;
if (prefixIndex == prefix.Length)
{
status = BarcodeReadStatus.ReadBarcode;
}
}
else
{
reset();
}
break;
case BarcodeReadStatus.ReadBarcode:
if (suffix[suffixIndex] == data)
{
status = BarcodeReadStatus.ReadSuffix;
Read(data);
}
else if (!ReadBarcode(data))
{
reset();
}
break;
case BarcodeReadStatus.ReadSuffix:
if (suffix[suffixIndex] == data)
{
if (suffixIndex == suffix.Length - 1)
{
SendBarcode();
reset();
}
else
{
suffixIndex++;
}
}
else
{
reset();
}
break;
}
}
