public void Write(Stream inputStream, bool encrypt)
{
// TODO: This produces perfect results for song archives (original vs repacked)
// there are slight differences in the binary of large archives (original vs repacked). WHY?
//
this.header.archiveFlags = encrypt ? 4U : 0U;
this.header.TOCEntrySize = 30;
this.WriteManifest();
//Pack entries
Dictionary <Entry, byte[]> zStreams; List <uint> zLengths;
DeflateEntries(out zStreams, out zLengths);
//Build zLengths
_writer = new BigEndianBinaryWriter(inputStream);
this.header.TotalTOCSize = (uint)(32 + this.TOC.Count * this.header.TOCEntrySize + zLengths.Count * bNum);
this.TOC[0].Offset = (ulong)this.header.TotalTOCSize;
for (int i = 1; i < this.TOC.Count; i++)
{
this.TOC[i].Offset = this.TOC[i - 1].Offset + (ulong)(zStreams[this.TOC[i - 1]].Length);
}
//Write Header
_writer.Write(this.header.MagicNumber);
_writer.Write(this.header.VersionNumber);
_writer.Write(this.header.CompressionMethod);
_writer.Write(this.header.TotalTOCSize);
_writer.Write(this.header.TOCEntrySize);
_writer.Write(this.TOC.Count);
_writer.Write(this.header.blockSizeAlloc);
_writer.Write(this.header.archiveFlags);
//Write Table of contents
foreach (Entry current in this.TOC)
{
current.UpdateNameMD5();
_writer.Write((current.Id == 0) ? new byte[16] : current.MD5);
_writer.Write(current.zIndexBegin);
_writer.WriteUInt40((ulong)current.Data.Length);
_writer.WriteUInt40(current.Offset);
}
foreach (uint zLen in zLengths)
{
switch (bNum)
{
case 2:
_writer.Write((ushort)zLen);
break;
case 3:
_writer.WriteUInt24(zLen);
break;
case 4:
_writer.Write(zLen);
break;
}
}
// Write zData
var ndx = 0; // for debugging
var step = Math.Round(1.0 / (this.TOC.Count + 2) * 100, 3);
double progress = 0;
GlobalExtension.ShowProgress("Writing Zipped Data ...");
foreach (Entry current in this.TOC)
{
_writer.Write(zStreams[current]);
progress += step;
GlobalExtension.UpdateProgress.Value = (int)progress;
Debug.WriteLine("Zipped: " + ndx++);
current.Data.Close();
}
if (encrypt) // Encrypt TOC
{
using (var outputStream = new MemoryStreamExtension())
{
var encStream = new MemoryStreamExtension();
inputStream.Seek(32, SeekOrigin.Begin);
RijndaelEncryptor.EncryptPSARC(inputStream, outputStream, this.header.TotalTOCSize);
inputStream.Seek(0, SeekOrigin.Begin);
int bytesRead;
var buffer = new byte[32];
bytesRead = inputStream.Read(buffer, 0, buffer.Length);
inputStream.Flush();
// quick copy header from input stream
encStream.Write(buffer, 0, bytesRead);
encStream.Seek(32, SeekOrigin.Begin);
int tocSize = (int)this.header.TotalTOCSize - 32;
int decSize = 0;
buffer = new byte[1024 * 16]; // more effecient use of memory
ndx = 0; // for debuging
step = Math.Round(1.0 / ((tocSize / buffer.Length) + 2) * 100, 3);
progress = 0;
GlobalExtension.ShowProgress("Writing Encrypted Data ...");
while ((bytesRead = outputStream.Read(buffer, 0, buffer.Length)) > 0)
{
decSize += bytesRead;
if (decSize > tocSize)
{
bytesRead = tocSize - (decSize - bytesRead);
}
encStream.Write(buffer, 0, bytesRead);
progress += step;
GlobalExtension.UpdateProgress.Value = (int)progress;
Debug.WriteLine("Encrypted: " + ndx++);
}
inputStream.Seek(0, SeekOrigin.Begin);
encStream.Seek(0, SeekOrigin.Begin);
encStream.CopyTo(inputStream, (int)this.header.blockSizeAlloc);
}
}
inputStream.Flush();
GlobalExtension.HideProgress();
}