public int packString(int offs, string s)
{
if (s == null)
{
extend(offs + 4);
Bytes.pack4(arr, offs, -1);
offs += 4;
}
else
{
int len = s.Length;
if (encoding == null)
{
extend(offs + 4 + len * 2);
Bytes.pack4(arr, offs, len);
offs += 4;
for (int i = 0; i < len; i++)
{
Bytes.pack2(arr, offs, (short)s[i]);
offs += 2;
}
}
else
{
byte[] bytes = encoding.GetBytes(s);
extend(offs + 4 + bytes.Length);
Bytes.pack4(arr, offs, -2 - bytes.Length);
Array.Copy(bytes, 0, arr, offs + 4, bytes.Length);
offs += 4 + bytes.Length;
}
}
return(offs);
}
internal void pack(Page pg, int i)
{
byte[] dst = pg.data;
switch (key.type)
{
case ClassDescriptor.FieldType.tpBoolean:
case ClassDescriptor.FieldType.tpSByte:
case ClassDescriptor.FieldType.tpByte:
dst[BtreePage.firstKeyOffs + i] = (byte)key.ival;
break;
case ClassDescriptor.FieldType.tpShort:
case ClassDescriptor.FieldType.tpUShort:
case ClassDescriptor.FieldType.tpChar:
Bytes.pack2(dst, BtreePage.firstKeyOffs + i * 2, (short)key.ival);
break;
case ClassDescriptor.FieldType.tpInt:
case ClassDescriptor.FieldType.tpUInt:
case ClassDescriptor.FieldType.tpEnum:
case ClassDescriptor.FieldType.tpObject:
case ClassDescriptor.FieldType.tpOid:
Bytes.pack4(dst, BtreePage.firstKeyOffs + i * 4, key.ival);
break;
case ClassDescriptor.FieldType.tpLong:
case ClassDescriptor.FieldType.tpULong:
case ClassDescriptor.FieldType.tpDate:
Bytes.pack8(dst, BtreePage.firstKeyOffs + i * 8, key.lval);
break;
case ClassDescriptor.FieldType.tpFloat:
Bytes.packF4(dst, BtreePage.firstKeyOffs + i * 4, (float)key.dval);
break;
case ClassDescriptor.FieldType.tpDouble:
Bytes.packF8(dst, BtreePage.firstKeyOffs + i * 8, key.dval);
break;
case ClassDescriptor.FieldType.tpDecimal:
Bytes.packDecimal(dst, BtreePage.firstKeyOffs + i * 16, key.dec);
break;
case ClassDescriptor.FieldType.tpGuid:
Bytes.packGuid(dst, BtreePage.firstKeyOffs + i * 16, key.guid);
break;
default:
Debug.Assert(false, "Invalid type");
break;
}
Bytes.pack4(dst, BtreePage.firstKeyOffs + (BtreePage.maxItems - i - 1) * 4, oid);
}
public int packI2(int offs, int val)
{
extend(offs + 2);
Bytes.pack2(arr, offs, (short)val);
return(offs + 2);
}