public async Task <FastcgiPacket> WriteToAsync(Stream ClientStream)
{
if (Content.Count > ushort.MaxValue)
{
throw(new InvalidDataException("Data too long"));
}
var ContentLength = (ushort)Content.Count;
var PaddingLength = (byte)(MathUtils.Align(ContentLength, 8) - ContentLength);
var Header = new byte[8];
Header[0] = Version;
Header[1] = (byte)Type;
Header[2] = (byte)((RequestId >> 8) & 0xFF);
Header[3] = (byte)((RequestId >> 0) & 0xFF);
Header[4] = (byte)((ContentLength >> 8) & 0xFF);
Header[5] = (byte)((ContentLength >> 0) & 0xFF);
Header[6] = PaddingLength;
Header[7] = 0;
await ClientStream.WriteAsync(Header, 0, Header.Length);
if (ContentLength > 0)
{
await ClientStream.WriteAsync(Content.Array, Content.Offset, Content.Count);
}
if (PaddingLength > 0)
{
await ClientStream.WriteAsync(PaddingWrite, 0, PaddingLength);
}
//await Console.Out.WriteLineAsync(String.Format("WRITE: Packet({0}): {1}({2}:{3})", RequestId, Type, ContentLength, PaddingLength));
return(this);
}
public override void SaveTo(Stream Stream, bool DoAlign = true)
{
var EntryListWithLinks = EntryList.Union(new Entry[] { new Entry(FPS4: this, Stream: new MemoryStream(), Name: "") }).ToArray();
var EntryListWithoutLinks = EntryListWithLinks.Where(Entry => !Entry.IsLinked).ToArray();
var SectorPadding = DoAlign ? 0x800 : 0x10;
var BinaryWriter = new BinaryWriter(Stream);
var OriginalFilePathBytes = Encoding.GetEncoding("Shift-JIS").GetBytes(OriginalFilePath);
long NamesStartOffset = Header.ListStart + Header.EntrySizeof * EntryListWithLinks.Length + OriginalFilePathBytes.Length;
long DataStartOffset = NamesStartOffset;
// Strings at the end of the entry list.
if ((int)Header.EntryFormat == 0x47)
{
foreach (var Entry in EntryListWithLinks)
{
DataStartOffset += Encoding.UTF8.GetByteCount(Entry.Name) + 1;
}
}
DataStartOffset = MathUtils.Align(DataStartOffset, SectorPadding);
Header.Magic = Encoding.ASCII.GetBytes("FPS4");
Header.ListCount = (uint)EntryListWithLinks.Length;
Header.ListStart = (uint)Marshal.SizeOf(typeof(HeaderStruct));
Header.ListEnd = (uint)(DataStartOffset);
var ExtraEntrySizeof = Header.EntrySizeof - 0x0C;
Stream.WriteStruct(Header);
long CurrentOffset = DataStartOffset;
// PASS1. First we calculate all the pointers for non-linked entries.
foreach (var Entry in EntryListWithoutLinks)
{
var LengthReal = Entry.Length;
var LengthSectorAligned = (uint)MathUtils.NextAligned((long)LengthReal, (long)SectorPadding);
Entry.EntryStruct = new EntryStruct()
{
Offset = (uint)CurrentOffset,
LengthSectorAligned = (uint)LengthSectorAligned,
LengthReal = (uint)LengthReal,
};
CurrentOffset += LengthSectorAligned;
}
var EndStringNames = new MemoryStream();
// PASS2. We then write all the EntryListWithLinks.
foreach (var Entry in EntryListWithLinks)
{
Stream.WriteStruct(Entry.LinkedEntryStruct);
switch (ExtraEntrySizeof)
{
case 0:
break;
case 4:
// Pointer to string name.
/*
* if (Offset != 0)
* {
* throw (new NotImplementedException());
* }
* //var Offset = BinaryReader.ReadUInt32();
*/
int NameIndex = -1;
if (!int.TryParse(Entry.Name, out NameIndex))
{
NameIndex = -1;
}
if ((Entry.Name == "") || (Entry.Index == NameIndex))
{
Stream.WriteStruct((uint_be)(uint)(0));
//Console.Error.WriteLine("Zero '{0}' : {1} : {2}", Entry.Name, Entry.Index, NameIndex);
}
else
{
Stream.WriteStruct((uint_be)(uint)(NamesStartOffset + EndStringNames.Length));
EndStringNames.WriteStringz(Entry.Name);
//Console.Error.WriteLine("Problem?");
//throw (new NotImplementedException());
}
break;
default:
Console.WriteLine("{0}", Entry.Name);
Stream.WriteStringz(Entry.Name, ExtraEntrySizeof);
break;
}
}
Stream.WriteBytes(OriginalFilePathBytes);
Stream.WriteZeroToOffset(DataStartOffset);
// PASS3: Write Names
if ((int)Header.EntryFormat == 0x47)
{
//Console.WriteLine("PASS3: Write Names");
Stream.SliceWithBounds(NamesStartOffset, DataStartOffset).WriteStream(EndStringNames.Slice());
}
foreach (var Entry in EntryListWithoutLinks)
{
Entry.Open().CopyToFast(Stream);
Stream.WriteZeroToAlign(SectorPadding);
}
Stream.Flush();
//throw new NotImplementedException();
}
public static Stream Align(this Stream Stream, int Align)
{
Stream.Position = MathUtils.Align(Stream.Position, Align);
return(Stream);
}
static public Stream WriteZeroToAlign(this Stream Stream, int Align)
{
Stream.WriteZeroBytes((int)(MathUtils.Align(Stream.Position, Align) - Stream.Position));
return(Stream);
}
/// <summary>
///
/// </summary>
/// <param name="stream"></param>
/// <param name="align"></param>
/// <returns></returns>
public static Stream Align(this Stream stream, int align)
{
stream.Position = MathUtils.Align(stream.Position, align);
return(stream);
}
/// <summary>
///
/// </summary>
/// <param name="stream"></param>
/// <param name="align"></param>
/// <returns></returns>
public static Stream WriteZeroToAlign(this Stream stream, int align)
{
stream.WriteZeroBytes((int)(MathUtils.Align(stream.Position, align) - stream.Position));
return(stream);
}