public AbstractEntity Parse(Gtin.Gtin gtin)
{
AbstractEntity entity = null;
string code = gtin.Code;
if (gtin is Gtin13)
{
int mode = int.Parse(code[0].ToString());
switch (mode)
{
case 2:
// Weight or price
int mode2 = int.Parse(code[1].ToString());
if (mode2 >= 0 && mode2 <= 2)
{
int divider = price_dividers[mode2];
float price = int.Parse(code.Substring(8, 4));
entity = new PriceProduct(code.Substring(2, 6), (divider == 0 ? price : price / divider));
}
else if (mode2 >= 3 && mode2 <= 5)
{
int divider = weight_dividers[mode2];
float weight = int.Parse(code.Substring(8, 4));
entity = new WeightProduct(code.Substring(2, 6), weight / divider);
}
break;
case 7:
if (code.Substring(0, 4) == "7388")
{
// Publication
entity = new Publication(code.Substring(4, 4), float.Parse(code.Substring(8, 4)) / 10);
}
break;
case 9:
// Coupon
entity = new Coupon(code.Substring(2, 6), float.Parse(code.Substring(8, 4)) / 10);
break;
default:
entity = new Product(code.Substring(6, 6), code.Substring(0, 6));
break;
}
}
else
{
entity = new Product(code.Substring(6, 1), code.Substring(0, 6));
}
return(entity);
}
public Gtin.Gtin Generate(AbstractEntity entity)
{
Gtin.Gtin gtin = null;
IFormatProvider numberFormat = CultureInfo.InvariantCulture;
if (entity is Product)
{
Product product = (Product)entity;
try
{
gtin = new Gtin8();
gtin.SetPart(6, product.CompanyPrefix);
gtin.SetPart(1, product.Sku);
}
catch (ArgumentException)
{
gtin = new Gtin13();
gtin.SetPart(9, product.CompanyPrefix);
gtin.SetPart(3, product.Sku);
}
}
else if (entity is WeightProduct)
{
gtin = new Gtin13();
WeightProduct product = (WeightProduct)entity;
decimal weight = (decimal)product.Weight;
int decimals = GetDecimalsCount(weight);
int modulator;
string weight_str = SubstringMax(weight.ToString(numberFormat).Replace(".", ""), 0, 4);
if (decimals == 0)
{
decimals = 3;
weight_str += "000";
}
else
{
decimals = Math.Max(1, Math.Min(3, decimals));
}
modulator = weight_modulators[decimals];
gtin.SetPart(2, "2" + modulator);
gtin.SetPart(6, product.Sku);
gtin.SetPart(4, weight_str);
}
else if (entity is PriceProduct)
{
gtin = new Gtin13();
PriceProduct product = (PriceProduct)entity;
decimal price = (decimal)product.Price;
int decimals = GetDecimalsCount(price);
int modulator;
string price_str = SubstringMax(price.ToString(numberFormat).Replace(".", ""), 0, 4);
decimals = Math.Max(0, Math.Min(2, decimals));
modulator = price_modulators[decimals];
gtin.SetPart(2, "2" + modulator);
gtin.SetPart(6, product.Sku);
gtin.SetPart(4, price_str);
}
else if (entity is Publication)
{
gtin = new Gtin13();
Publication product = (Publication)entity;
decimal price = (decimal)product.Price;
int decimals = GetDecimalsCount(price);
string price_str = price.ToString(numberFormat).Replace(".", "");
if (decimals == 0)
{
price_str = SubstringMax(price_str, 0, 3) + "0";
}
else
{
price_str = SubstringMax(price_str, 0, 4);
}
gtin.SetPart(4, "7388");
gtin.SetPart(4, product.Sku);
gtin.SetPart(4, price_str);
}
else if (entity is Coupon)
{
gtin = new Gtin13();
Coupon coupon = (Coupon)entity;
decimal value = (decimal)coupon.Value;
int decimals = GetDecimalsCount(value);
string value_str = value.ToString(numberFormat).Replace(".", "");
if (decimals == 0)
{
value_str = SubstringMax(value_str, 0, 3) + "0";
}
else
{
value_str = SubstringMax(value_str, 0, 4);
}
gtin.SetPart(2, "99");
gtin.SetPart(6, coupon.Id);
gtin.SetPart(4, value_str);
}
return(gtin);
}
