private ArchiveFileInfo CreateAfi(Stream file, string name, HpiFileEntry entry)
{
var magic = HpiHpbSupport.PeekString(file, 4);
if (magic != "ACMP")
{
return(new HpiHpbArchiveFileInfo(file, name, entry));
}
var compressedStream = new SubStream(file, 0x20, file.Length - 0x20);
return(new HpiHpbArchiveFileInfo(compressedStream, name, entry, Kompression.Implementations.Compressions.Nintendo.BackwardLz77, entry.decompSize));
}
public void Save(Stream hpiStream, Stream hpbStream, IList <IArchiveFileInfo> files)
{
var sjis = Encoding.GetEncoding("SJIS");
using var hpiBw = new BinaryWriterX(hpiStream);
// Calculate offsets
var fileOffset = 0;
var hashOffset = HeaderSize;
var entryOffset = hashOffset + HashSlotCount_ * HashEntrySize;
var stringOffset = entryOffset + files.Count * FileEntrySize;
// Group files
var fileLookup = files.ToLookup(x => HpiHpbSupport.CreateHash(x.FilePath.ToRelative().FullName) % HashSlotCount_);
// Write files and strings
hpiStream.Position = stringOffset;
hpbStream.Position = fileOffset;
foreach (var file in files.Cast <HpiHpbArchiveFileInfo>().OrderBy(x => x.FilePath, new SlashFirstStringComparer()))
{
fileOffset = (int)hpbStream.Position;
var nameOffset = (int)hpiStream.Position;
var writtenSize = file.SaveFileData(hpbStream);
hpiBw.WriteString(file.FilePath.ToRelative().FullName, sjis, false);
file.Entry.offset = fileOffset;
file.Entry.stringOffset = nameOffset - stringOffset;
file.Entry.compSize = (int)writtenSize;
file.Entry.decompSize = file.UsesCompression ? (int)file.FileSize : 0;
}
// Write entries
var hashes = new List <HpiHashEntry>();
hpiStream.Position = entryOffset;
for (uint i = 0, offset = 0; i < HashSlotCount_; i++)
{
var hashEntry = new HpiHashEntry
{
entryOffset = (short)offset,
entryCount = (short)fileLookup[i].Count()
};
hashes.Add(hashEntry);
offset += (uint)hashEntry.entryCount;
foreach (var file in fileLookup[i].Cast <HpiHpbArchiveFileInfo>())
{
hpiBw.WriteType(file.Entry);
}
}
// Write hash entries
hpiStream.Position = hashOffset;
hpiBw.WriteMultiple(hashes);
// Write header
hpiStream.Position = 0;
hpiBw.WriteType(new HpiHeader
{
hashCount = (short)hashes.Count,
entryCount = files.Count
});
}