public static async Task <MixIndexEntry[]> GetIndex(this Stream stream, Memory <byte> buffer, MixHeader head)
{
if (buffer.Length < 12)
{
throw new Exception("Buffer Too Short");
}
var index = new MixIndexEntry[head.Files];
for (int i = 0; i < head.Files; i++)
{
await stream.ReadAsync(buffer.Slice(0, 12)).ConfigureAwait(false);
index[i] = buffer.Slice(0, 12).ToArray().ToStruct <MixIndexEntry>();
}
return(index);
}
public static void Write(this BinaryWriter @this, MixIndexEntry head)
{
@this.Write(head.Id);
@this.Write(head.Offset);
@this.Write(head.Size);
}
public static async Task <Dictionary <uint, string>?> LoadLocalXccDatabase(this Stream stream, MixIndexEntry lxd, int body_offset)
{
Dictionary <uint, string> fileNameMap;
try
{
StringBuilder sb = new();
Func <string, uint> GetId;
byte ch;
stream.Seek(lxd.Offset + body_offset, SeekOrigin.Begin);
await using MemoryStream ms = new(lxd.Size);
await stream.CopyToAsync(ms, lxd.Size).ConfigureAwait(false);
ms.Seek(48, SeekOrigin.Begin);
using BinaryReader msbr = new(ms, Encoding.ASCII);
var count = msbr.ReadInt32();
fileNameMap = new(count);
GetId = lxd.Id is 0x366E051F
? IdUtils.GetIdASCII
: IdUtils.GetIdTs;
for (int i = 0; i < count; i++)
{
sb.Clear();
while ((ch = msbr.ReadByte()) > 0)
{
sb.Append((char)ch);
}
var name = sb.ToString();
fileNameMap.Add(GetId(name), name);
}
return(fileNameMap);
}
catch (Exception ex)
{
Console.Error.WriteLine(ex);
return(null);
}
}
