private Encoders.Encoder GetEncoder(DbfFieldType type, Encoding encoding)
{
switch (type)
{
case DbfFieldType.Character: return(new Encoders.CharacterEncoder(encoding));
case DbfFieldType.Currency: return(new Encoders.CurrencyEncoder(encoding));
case DbfFieldType.Date: return(new Encoders.DateEncoder(encoding));
case DbfFieldType.DateTime: return(new Encoders.DateTimeEncoder(encoding));
case DbfFieldType.Integer: return(new Encoders.IntegerEncoder(encoding));
case DbfFieldType.Float: return(new Encoders.FloatEncoder(encoding));
case DbfFieldType.Double: return(new Encoders.DoubleEncoder(encoding));
case DbfFieldType.Numeric: return(new Encoders.NumericEncoder(encoding));
case DbfFieldType.Logical: return(new Encoders.LogicalEncoder(encoding));
case DbfFieldType.NullFlags: return(new Encoders.NullFlagsEncoder(encoding));
case DbfFieldType.Memo: return(new Encoders.MemoEncoder(encoding));
default:
throw new ArgumentException($"No encoder found for dBASE type '{type}'.");
}
}
internal DbfField(string name, DbfFieldType type, int length, Encoding encoding)
{
Name = name;
Type = type;
Length = (byte)length;
Encoder = GetEncoder(Type, encoding);
}
public DbfField(string name, DbfFieldType type, byte length)
{
this.Name = name;
this.Type = type;
this.Length = length;
this.Precision = 0;
this.WorkAreaID = 0;
this.Flags = 0;
}
public DbfField(string name, DbfFieldType type, int length = 0, int precision = 0)
{
Name = name;
Type = type;
Length = length;
Precision = precision;
switch (type)
{
case DbfFieldType.Float:
if (length == 0)
{
Length = 10;
}
break;
}
}
public static IEncoder GetEncoder(DbfFieldType type)
{
switch (type)
{
case DbfFieldType.Character:
return(CharacterEncoder.Instance);
case DbfFieldType.Currency:
return(CurrencyEncoder.Instance);
case DbfFieldType.Date:
return(DateEncoder.Instance);
case DbfFieldType.DateTime:
return(DateTimeEncoder.Instance);
case DbfFieldType.Float:
return(FloatEncoder.Instance);
case DbfFieldType.Integer:
return(IntegerEncoder.Instance);
case DbfFieldType.Logical:
return(LogicalEncoder.Instance);
case DbfFieldType.Memo:
return(MemoEncoder.Instance);
case DbfFieldType.NullFlags:
return(NullFlagsEncoder.Instance);
case DbfFieldType.Numeric:
return(NumericEncoder.Instance);
default:
throw new ArgumentException("No encoder found for dBASE type " + type);
}
}
public DbfField AddNewField(string name, DbfFieldType type, int length)
{
if (type == DbfFieldType.Memo)
{
if (Header.Version == DbfVersion.dBase4SQLSystemNoMemo ||
Header.Version == DbfVersion.dBase4SQLTableNoMemo ||
Header.Version == DbfVersion.FoxBaseDBase3NoMemo)
{
throw new InvalidOperationException("Memo fields are not supported for this database version.");
}
if (Memo == null)
{
Memo = CreateMemo();
}
}
var field = new DbfField(name, type, length, _encoding);
Fields.Add(field);
return(field);
}
