public Database(string dbName)
{
name = dbName;
version = Global.Version.VERSION_LATEST;
}
public Database()
{
name = "";
version = Global.Version.VERSION_INVALID;
}
public Database(string dbName, Global.Version ver)
{
name = dbName;
version = ver;
}
public void Read(ref Buffer buffer)
{
version = (Global.Version)buffer.ReadBytesShort();
if (version == Global.Version.VERSION_INVALID)
{
throw new ArgumentOutOfRangeException("version", "Invalid database version!");
}
if (version > Global.Version.VERSION_LATEST)
{
throw new ArgumentOutOfRangeException("version", "Unsupported version!");
}
switch (version)
{
case Global.Version.VERSION_1_0:
name = buffer.ReadBytesString();
buffer.AddOffset(sizeof(uint)); //we skip the size (don't need it)
ushort objectCount = (ushort)buffer.ReadBytesShort();
for (ushort i = 0; i < objectCount; i++)
{
Object obj = new Object();
obj.Read(ref buffer);
AddObject(obj);
}
break;
case Global.Version.VERSION_2_0:
name = buffer.ReadBytesString();
uint checksum = (uint)buffer.ReadBytesInt32();
uint p = buffer.Position;
uint size = (uint)buffer.ReadBytesInt32() - sizeof(short) - sizeof(short) - (uint)name.Length - sizeof(uint);
if (crc32(buffer.Data, p, size) != checksum)
{
throw new ArgumentOutOfRangeException("crc32", "Checksum mismatch!");
}
// objectCount already defined in case VERSION_1_0
objectCount = (ushort)buffer.ReadBytesShort();
for (ushort i = 0; i < objectCount; i++)
{
Object obj = new Object();
obj.Read(ref buffer);
AddObject(obj);
}
break;
default:
throw new ArgumentOutOfRangeException("version", "Invalid database version!");
}
}
