protected byte[][] ReadDataEntry(long startFirstEntryPosition, RpmStruct.RPMEntry entry)
{
Func <byte[]> func;
if (_dataEntryReaders.TryGetValue((RpmConstants.rpmTagType)entry.Type, out func))
{
_fileStream.Seek(startFirstEntryPosition + entry.Offset, SeekOrigin.Begin);
List <byte[]> data = new List <byte[]>();
for (int i = 0; i < entry.Count; ++i)
{
data.Add(func());
}
return(data.ToArray());
}
else
{
throw new Exception(string.Format("Для тега типа {0} не реализована функция чтения данных", entry.Type));
}
}
public bool FillHeaderEntry(byte[] data, int countEntry)
{
int len = Marshal.SizeOf(typeof(RpmStruct.RPMEntry));
_entries = new RpmStruct.RPMEntry[countEntry];
for (int i = 0; i < countEntry; ++i)
{
RpmStruct.RPMEntry entry = new RpmStruct.RPMEntry();
IntPtr @in = Marshal.AllocHGlobal(len);
Marshal.Copy(data, len * i, @in, len);
entry = (RpmStruct.RPMEntry)Marshal.PtrToStructure(@in, typeof(RpmStruct.RPMEntry));
Marshal.FreeHGlobal(@in);
entry.Count = entry.Count.ReverseBytes();
entry.Offset = entry.Offset.ReverseBytes();
entry.Tag = entry.Tag.ReverseBytes();
entry.Type = entry.Type.ReverseBytes();
_entries[i] = entry;
}
return(true);
}
public bool FillHeaderEntry(byte[] data, int countEntry)
{
int len = Marshal.SizeOf(typeof(RpmStruct.RPMEntry));
_entries = new RpmStruct.RPMEntry[countEntry];
for (int i = 0; i < countEntry; ++i)
{
RpmStruct.RPMEntry entry = new RpmStruct.RPMEntry();
IntPtr @in = Marshal.AllocHGlobal(len);
Marshal.Copy(data, len * i, @in, len);
entry = (RpmStruct.RPMEntry)Marshal.PtrToStructure(@in, typeof(RpmStruct.RPMEntry));
Marshal.FreeHGlobal(@in);
unchecked
{
entry.Count = entry.Count.ReverseBytes();
entry.Offset = entry.Offset.ReverseBytes();
entry.Tag = entry.Tag.ReverseBytes();
entry.Type = entry.Type.ReverseBytes();
}
_entries[i] = entry;
}
return true;
}
