public void WriteRecord(DBFRecord record)
{
if (!record.IsDirty())
{
return;
}
//if (writeStream == null)
//{
// throw new DBFException(
// "Not initialized with file for WriteRecord use, use AddRecord instead");
//}
//AddRecord(values, true);
//AddRecord(record.ValueArray);
Validate(record.ValueArray);
//if (!writeImediately)
//{
// v_records.Add(values);
//}
//else
//{
try
{
//WriteRecord(new BinaryWriter(writeStream), values);
WriteRecord(_BinaryWriter, record);
//recordCount++;
}
catch (IOException e)
{
throw new DBFException(
"Error occured while writing record. ", e);
}
//}
}
public IEnumerable <DBFRecord> AsEnumerable(Func <DBFRecord, bool> filter)
{
var lookupFieldName = GetSelectFields()
.Select((f, i) => new { f.Name, Index = i })
.ToDictionary(f => f.Name, f => f.Index);
var(objects, position) = NextRecord();
while (objects != null)
{
var record = new DBFRecord(lookupFieldName, objects, position);
if (record != null || filter(record) == true)
{
yield return(record);
}
(objects, position) = NextRecord();
}
}
private void WriteRecord(BinaryWriter dataOutput, DBFRecord record)
{
if (!record.IsDirty())
{
return;
}
//var originalPosition = _BaseStream.Position;
_BaseStream.Seek(record.Position, SeekOrigin.Begin);
dataOutput.Write((byte)' ');
for (var j = 0; j < _Header.FieldArray.Length; j++)
{
/* iterate throught fields */
if (!record.IsDirty(j))
{
_BaseStream.Seek(_Header.FieldArray[j].FieldLength, SeekOrigin.Current);
continue;
}
var objectArray = record.ValueArray;
switch (_Header.FieldArray[j].DataType)
{
case NativeDbType.UnicodeChar:
var str_valueU = (objectArray[j] != null && objectArray[j] != DBNull.Value) ? objectArray[j].ToString() : "";
var bufferU = Utils.textPadding(str_valueU,
_UCharEncoding,
_Header.FieldArray[j].FieldLength,
Utils.ALIGN_LEFT,
(byte)0x00
);
dataOutput.Write(bufferU);
break;
case NativeDbType.Char:
var str_value = (objectArray[j] != null && objectArray[j] != DBNull.Value) ? objectArray[j].ToString() : "";
var buffer = Utils.textPadding(str_value,
CharEncoding,
_Header.FieldArray[j].FieldLength
);
dataOutput.Write(buffer);
break;
case NativeDbType.Date:
if (objectArray[j] != null && objectArray[j] != DBNull.Value)
{
var tDate = (DateTime)objectArray[j];
dataOutput.Write(
CharEncoding.GetBytes(tDate.ToString("yyyyMMdd")));
}
else
{
dataOutput.Write(
Utils.FillArray(new byte[8], DBFFieldType.Space));
}
break;
case NativeDbType.Float:
if (objectArray[j] != null && objectArray[j] != DBNull.Value)
{
var tDouble = Convert.ToDouble(objectArray[j]);
dataOutput.Write(
Utils.NumericFormating(
tDouble,
CharEncoding,
_Header.FieldArray[j].FieldLength,
_Header.FieldArray[j].DecimalCount
)
);
}
else
{
dataOutput.Write(
Utils.textPadding(
NullSymbol,
CharEncoding,
_Header.FieldArray[j].FieldLength,
Utils.ALIGN_RIGHT
)
);
}
break;
case NativeDbType.Numeric:
if (objectArray[j] != null && objectArray[j] != DBNull.Value)
{
var tDecimal = Convert.ToDecimal(objectArray[j]);
dataOutput.Write(
Utils.NumericFormating(
tDecimal,
CharEncoding,
_Header.FieldArray[j].FieldLength,
_Header.FieldArray[j].DecimalCount
)
);
}
else
{
dataOutput.Write(
Utils.textPadding(
NullSymbol,
CharEncoding,
_Header.FieldArray[j].FieldLength,
Utils.ALIGN_RIGHT
)
);
}
break;
case NativeDbType.Logical:
if (objectArray[j] != null && objectArray[j] != DBNull.Value)
{
if ((bool)objectArray[j])
{
dataOutput.Write(DBFFieldType.True);
}
else
{
dataOutput.Write(DBFFieldType.False);
}
}
else
{
dataOutput.Write(DBFFieldType.UnknownByte);
}
break;
case NativeDbType.Memo:
if (objectArray[j] != null && objectArray[j] != DBNull.Value)
{
var tMemoValue = ((MemoValue)objectArray[j]);
tMemoValue.Write(this);
dataOutput.Write(Utils.NumericFormating(tMemoValue.Block, CharEncoding, 10, 0));
}
else
{
dataOutput.Write(
Utils.textPadding("",
CharEncoding,
10
)
);
}
break;
default:
throw new DBFException("Unknown field type "
+ _Header.FieldArray[j].DataType);
}
} /* iterating through the fields */
_BinaryWriter.Flush();
//_BaseStream.Seek(originalPosition, SeekOrigin.Begin);
}