public static IEnumerable <TableUpdate> LoadTablesUpdate(string filePath, IDatumFactory dataFactory)
{
using (FileStream fs = File.OpenRead(filePath))
{
var reader = new RawDataReader(fs, Encoding.UTF8);
byte[] sign = Encoding.UTF8.GetBytes(TABLES_UPDATE_SIGNATURE);
for (int i = 0; i < sign.Length; ++i)
{
if (reader.ReadByte() != sign[i])
{
throw new CorruptedFileException(filePath);
}
}
int tableCount = reader.ReadInt();
var lst = new List <TableUpdate>(tableCount);
for (int i = 0; i < tableCount; ++i)
{
lst.Add(LoadTableUpdate(reader, dataFactory));
}
return(lst);
}
}
//private:
static TableUpdate LoadTableUpdate(IReader reader, IDatumFactory dataFactory)
{
uint idTable = reader.ReadUInt();
uint preGen = reader.ReadUInt();
uint postGen = reader.ReadUInt();
int szDatum = reader.ReadInt();
int actionCount = reader.ReadInt();
var lst = new List <IUpdateAction>(actionCount);
for (int i = 0; i < actionCount; ++i)
{
var code = (ActionCode_t)reader.ReadByte();
switch (code)
{
case ActionCode_t.ResetTable:
lst.Add(new ResetTable());
break;
case ActionCode_t.DeleteRow:
{
var delAction = new DeleteRow(0);
delAction.Read(reader);
lst.Add(delAction);
}
break;
case ActionCode_t.ReplaceRow:
{
var repAction = new ReplaceRow(dataFactory.CreateDatum(idTable));
repAction.Read(reader);
lst.Add(repAction);
}
break;
case ActionCode_t.AddRow:
{
var addAction = new AddRow(dataFactory.CreateDatum(idTable));
addAction.Read(reader);
lst.Add(addAction);
}
break;
default:
Assert(false);
break;
}
}
return(new TableUpdate(idTable, lst, szDatum, preGen, postGen));
}
