/*
* public static string ToGtin(string companyPrefixAndItemReferenceBinary, string partition)
* {
* Partitiion _partition;
* if (PartitionTable.TryGetValue(partition, out _partition))
* {
* var companyPrefixBinary = companyPrefixAndItemReferenceBinary.Substring(0, _partition.CompanyPrefixBits);
* var itemReferenceBinary = companyPrefixAndItemReferenceBinary.Substring(_partition.CompanyPrefixBits, _partition.ItemReferenceBits);
* var companyPrefix = Convert.ToInt32(companyPrefixBinary, 2).ToString().PadLeft(_partition.CompanyPrefixDigits, '0');
* var itemReference = Convert.ToInt32(itemReferenceBinary, 2).ToString().PadLeft(_partition.ItemReferenceDigits, '0');
* var gtin = itemReferenceBinary.First().ToString() + companyPrefix + itemReference.Substring(1);
* var checkNumber = GenerateCheckNumber(gtin);
*
* return gtin + checkNumber;
* }
*
* return string.Empty;
* }
* */
/// <summary>
/// 判断UPC对应的GTIN是否合法
/// </summary>
/// <param name="upc">带检测的UPC</param>
/// <returns></returns>
public static bool IsValid(string upc)
{
string gtin = upc.PadLeft(s_gtinDigits, '0');
string orignCheckNumber = gtin.Last().ToString();
string generatedheckNumber = GtinManager.GenerateCheckNumber(gtin.Substring(0, gtin.Length - 1));
return(string.Compare(orignCheckNumber, generatedheckNumber) == 0);
}
/// <summary>
/// 根据UPC及partition获得EPC对应的 CompanyPrefix 和 ItemReference
/// </summary>
/// <param name="upc"></param>
/// <param name="partition"></param>
public GtinManager(string upc, string partition)
{
this.Upc = upc;
this.Partition = partition;
this.Gtin = GtinManager.ToGtin(upc);
Identify();
}
public static string ToGtin(string upc)
{
if (!GtinManager.IsValid(upc))
{
throw new InvalidCastException("upc is not valid");
}
return(upc.PadLeft(s_gtinDigits, '0'));
}
/// <summary>
/// 转成24位十六进制EPC 二进制为96位
/// </summary>
/// <param name="header">96 bit GTIN</param>
/// <param name="filterValue">Selling Unit</param>
/// <param name="partition">7 digit Mfg Nbr including number system characters</param>
/// <param name="upc">UPC will convert to GTIN</param>
/// <param name="serialNumber">Serial Nbr assigned by EPC Mgr for item</param>
/// <returns></returns>
public static string UpcConvertEpc(string header, string filterValue, string partition, string upc, string serialNumber)
{
var gtin = new GtinManager(upc, partition);
var headerBinary = Convert.ToString(int.Parse(header), 2).PadLeft(s_headerBits, '0');
var filterValueBinary = Convert.ToString(int.Parse(filterValue), 2).PadLeft(s_filterValueBits, '0');
var partitionBinary = Convert.ToString(int.Parse(partition), 2).PadLeft(s_partitionBits, '0');
var gtinBinary = gtin.ToBinaryString();
var serialNumberBinary = Convert.ToString(long.Parse(serialNumber), 2).PadLeft(s_serialNbrBits, '0');
var epcBinary = string.Format("{0}{1}{2}{3}{4}", headerBinary, filterValueBinary, partitionBinary, gtinBinary, serialNumberBinary);
return(EpcManager.BinaryEpcToHex(epcBinary));
}
internal static GtinManager ToGtinManager(string companyPrefixAndItemReferenceBinary, string partition)
{
GtinManager gtinManager = new GtinManager(partition);
Partitiion _partition;
if (PartitionTable.TryGetValue(partition, out _partition))
{
var companyPrefixBinary = companyPrefixAndItemReferenceBinary.Substring(0, _partition.CompanyPrefixBits);
var itemReferenceBinary = companyPrefixAndItemReferenceBinary.Substring(_partition.CompanyPrefixBits, _partition.ItemReferenceBits);
var companyPrefix = Convert.ToInt32(companyPrefixBinary, 2).ToString().PadLeft(_partition.CompanyPrefixDigits, '0');
var itemReference = Convert.ToInt32(itemReferenceBinary, 2).ToString().PadLeft(_partition.ItemReferenceDigits, '0');
var gtin = itemReferenceBinary.First().ToString() + companyPrefix + itemReference.Substring(1);
var checkNumber = GenerateCheckNumber(gtin);
gtinManager.Gtin = gtin + checkNumber;
gtinManager.CompanyPrefix = companyPrefix;
gtinManager.ItemReference = itemReference;
}
return(gtinManager);
}
/// <summary>
/// 解析EPC
/// </summary>
/// <param name="epc">24位十六进制的EPC</param>
public static EpcManager Parse(string epc)
{
var epcBinary = Utils.HexToBinary(epc);
var headerBinary = epcBinary.Substring(0, s_headerBits);
var header = Convert.ToInt32(headerBinary, 2).ToString();
var filterValueBinary = epcBinary.Substring(s_headerBits, s_filterValueBits);
var filterValue = Convert.ToInt32(filterValueBinary, 2).ToString();
var partitionBinary = epcBinary.Substring(s_headerBits + s_filterValueBits, s_partitionBits);
var partition = Convert.ToInt32(partitionBinary, 2).ToString();
var companyPrefixAndItemReferenceBinary = epcBinary.Substring(s_headerBits + s_filterValueBits + s_partitionBits, s_gtinBits);
var serialNumberBinary = epcBinary.Substring(s_headerBits + s_filterValueBits + s_partitionBits + s_gtinBits, s_serialNbrBits);
var serialNumber = Convert.ToInt64(serialNumberBinary, 2).ToString();
EpcManager epcManager = new EpcManager(header, filterValue, partition);
epcManager.GTIN = GtinManager.ToGtinManager(companyPrefixAndItemReferenceBinary, partition);
epcManager.SerialNumber = serialNumber;
return(epcManager);
}
