/// <summary>
///
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public List <IArchiveFileInfo> Load(Stream input)
{
using var br = new BinaryReaderX(input, true, ByteOrder.BigEndian);
Header = br.ReadType <Header>();
// Determine BlockLength
uint blockIterator = 256;
do
{
blockIterator *= 256;
BlockLength = (ushort)(BlockLength + 1);
} while (blockIterator < Header.BlockSize);
// Manifest
//var manifestEntry = br.ReadType<Entry>();
var manifestEntry = ReadEntry(br);
// Entries
//var fileEntries = br.ReadMultiple<Entry>(Header.TocEntryCount - 1);
var fileEntries = new List <Entry>();
for (var i = 1; i < Header.TocEntryCount; i++)
{
fileEntries.Add(ReadEntry(br));
}
// Blocks
var numBlocks = (Header.TocSize - (int)br.BaseStream.Position) / BlockLength;
for (var i = 0; i < numBlocks; i++)
{
CompressedBlockSizes.Add(br.ReadBytes(BlockLength).Reverse().Select((x, j) => x << 8 * j).Sum());
}
// Check for SDAT Encryption
if (Header.TocEntryCount > 0)
{
br.BaseStream.Position = manifestEntry.Offset;
var compression = br.ReadUInt16();
br.BaseStream.Position -= 2;
AllStarsEncryptedArchive = compression == AllStarsEncryptionA || compression == AllStarsEncryptionB;
}
// Load Filenames
var filenames = new List <string>();
if (!AllStarsEncryptedArchive)
{
var manifestStream = new PsarcBlockStream(input, manifestEntry, Header.BlockSize, CompressedBlockSizes);
using var brNames = new BinaryReaderX(manifestStream, Encoding.UTF8);
for (var i = 1; i < Header.TocEntryCount; i++)
{
filenames.Add(Encoding.UTF8.GetString(brNames.ReadBytesUntil(0x0, (byte)'\n')));
}
}
else
{
// Temporary until we can decrypt AllStars PSARCs.
for (var i = 1; i < Header.TocEntryCount; i++)
{
filenames.Add($"/{i:00000000}.bin");
}
}
// Files
var _files = new List <IArchiveFileInfo>();
if (!AllStarsEncryptedArchive)
{
for (int i = 0; i < fileEntries.Count; i++)
{
_files.Add(new PsarcFileInfo(new PsarcBlockStream(input, fileEntries[i], Header.BlockSize, CompressedBlockSizes), filenames[i]));
}
}
else
{
for (int i = 0; i < fileEntries.Count; i++)
{
var entry = fileEntries[i];
var compressedSize = 0L;
for (var j = entry.FirstBlockIndex; j < entry.FirstBlockIndex + Math.Ceiling((double)entry.UncompressedSize / Header.BlockSize); j++)
{
compressedSize += CompressedBlockSizes[j] == 0 ? Header.BlockSize : CompressedBlockSizes[j];
}
_files.Add(new ArchiveFileInfo(new SubStream(input, entry.Offset, compressedSize), filenames[i]));
}
}
return(_files);
}
/// <summary>
///
/// </summary>
/// <param name="fileData"></param>
/// <param name="filePath"></param>
public PsarcFileInfo(PsarcBlockStream fileData, string filePath) : base(fileData, filePath)
{
}