public bool Unpack(string DirName, string PackageName)
{
FileInfo pakFile = new FileInfo(PackageName);
FileStream stmori = pakFile.Open(FileMode.Open, FileAccess.Read);
BinaryReader brori = new BinaryReader(stmori);
ScwHeader scwHdr = (ScwHeader)StructConverter.BytesToStruct(brori.ReadBytes(
Marshal.SizeOf(typeof(ScwHeader))), typeof(ScwHeader));
if (scwHdr.Magic != "DataPack5" || scwHdr.MajorVer != 5)
{
throw new FormatException("File");
}
stmori.Seek(scwHdr.IndexOffset, SeekOrigin.Begin);
byte[] comprIdx = brori.ReadBytes((int)scwHdr.IndexLen);
byte[] uncomprIdx = new byte[scwHdr.IndexEntries * Marshal.SizeOf(typeof(ScwIndexEntry))];
DecryptBlock(comprIdx);
LzssUncompress(uncomprIdx, (int)scwHdr.IndexEntries * Marshal.SizeOf(typeof(ScwIndexEntry)),
comprIdx, (int)scwHdr.IndexLen);
MemoryStream stmidx = new MemoryStream(uncomprIdx);
BinaryReader bridx = new BinaryReader(stmidx);
List <ScwIndexEntry> entries = new List <ScwIndexEntry>((int)scwHdr.IndexEntries);
//ArrayList entries2 = new ArrayList((int)scwHdr.IndexEntries);
for (int i = 0; i < scwHdr.IndexEntries; i++)
{
entries.Add((ScwIndexEntry)StructConverter.BytesToStruct(
bridx.ReadBytes(Marshal.SizeOf(typeof(ScwIndexEntry))), typeof(ScwIndexEntry)));
}
Directory.SetCurrentDirectory(DirName);
if (Path.GetFileName(PackageName).StartsWith("Graphic", StringComparison.CurrentCultureIgnoreCase))
{
for (int i = 0; i < scwHdr.IndexEntries; i++)
{
ScwIndexEntry entry = entries[i];
FileInfo newf = new FileInfo(entry.Name + ".png");
Stream stmnew = newf.Open(FileMode.Create, FileAccess.Write);
stmori.Seek(entry.Offset + scwHdr.DataOffset, SeekOrigin.Begin);
byte[] newbuff = brori.ReadBytes((int)entry.Length);
DecryptBlock2(newbuff, CalcKey(entry.Name));
stmnew.Write(newbuff, 0, (int)entry.Length);
stmnew.Close();
}
}
else if (Path.GetFileName(PackageName).StartsWith("Scr", StringComparison.CurrentCultureIgnoreCase))
{
for (int i = 0; i < scwHdr.IndexEntries; i++)
{
ScwIndexEntry entry = entries[i];
FileInfo newf = new FileInfo(entry.Name);
Stream stmnew = newf.Open(FileMode.Create, FileAccess.Write);
stmori.Seek(entry.Offset + scwHdr.DataOffset, SeekOrigin.Begin);
stmnew.Write(brori.ReadBytes((int)entry.Length), 0, (int)entry.Length);
stmnew.Close();
}
}
else
{
throw new FormatException("Not supported prefix!");
}
stmori.Close();
return(true);
}
public bool Pack(string DirName, string PackageName, string NewPakName = null)
{
//if (NewPakName == null)
// NewPakName = PackageName.Replace(".pak", "2.pak");
FileInfo pakFile = new FileInfo(PackageName);
FileStream stmori = pakFile.Open(FileMode.Open, FileAccess.ReadWrite);
BinaryReader brori = new BinaryReader(stmori);
BinaryWriter bwori = new BinaryWriter(stmori);
ScwHeader scwHdr = (ScwHeader)StructConverter.BytesToStruct(brori.ReadBytes(
Marshal.SizeOf(typeof(ScwHeader))), typeof(ScwHeader));
if (scwHdr.Magic != "DataPack5" || scwHdr.MajorVer != 5)
{
throw new FormatException("File");
}
stmori.Seek(scwHdr.IndexOffset, SeekOrigin.Begin);
byte[] comprIdx = brori.ReadBytes((int)scwHdr.IndexLen);
byte[] uncomprIdx = new byte[scwHdr.IndexEntries * Marshal.SizeOf(typeof(ScwIndexEntry))];
DecryptBlock(comprIdx);
LzssUncompress(uncomprIdx, (int)scwHdr.IndexEntries * Marshal.SizeOf(typeof(ScwIndexEntry)),
comprIdx, (int)scwHdr.IndexLen);
MemoryStream stmidx = new MemoryStream(uncomprIdx);
BinaryReader bridx = new BinaryReader(stmidx);
List <ScwIndexEntry> entries = new List <ScwIndexEntry>((int)scwHdr.IndexEntries);
//ArrayList entries2 = new ArrayList((int)scwHdr.IndexEntries);
for (int i = 0; i < scwHdr.IndexEntries; i++)
{
entries.Add((ScwIndexEntry)StructConverter.BytesToStruct(
bridx.ReadBytes(Marshal.SizeOf(typeof(ScwIndexEntry))), typeof(ScwIndexEntry)));
}
Directory.SetCurrentDirectory(DirName);
long dataend = scwHdr.IndexOffset - scwHdr.DataOffset;
for (int i = 0; i < scwHdr.IndexEntries; i++)
{
ScwIndexEntry entry = entries[i];
if (Path.GetFileName(PackageName).StartsWith("Graphic", StringComparison.CurrentCultureIgnoreCase))
{
if (File.Exists(entry.Name + ".png"))
{
FileInfo newf = new FileInfo(entry.Name + ".png");
byte[] stmnew = File.ReadAllBytes(entry.Name + ".png");
DecryptBlock2(stmnew, CalcKey(entry.Name));
if (newf.Length <= entry.Length)
{
stmori.Seek(entry.Offset + scwHdr.DataOffset, SeekOrigin.Begin);
bwori.Write(stmnew);
entry.Length = (uint)newf.Length;
}
else
{
stmori.Seek(dataend + scwHdr.DataOffset, SeekOrigin.Begin);
bwori.Write(stmnew);
entry.Offset = (uint)dataend;
dataend += newf.Length;
dataend = dataend % 4 == 0 ? dataend : dataend + (4 - dataend % 4);
entry.Length = (uint)newf.Length;
}
entries[i] = entry;
}
}
else if (Path.GetFileName(PackageName).StartsWith("Scr", StringComparison.CurrentCultureIgnoreCase))
{
if (File.Exists(entry.Name))
{
FileInfo newf = new FileInfo(entry.Name);
if (newf.Length <= entry.Length)
{
stmori.Seek(entry.Offset + scwHdr.DataOffset, SeekOrigin.Begin);
bwori.Write(File.ReadAllBytes(entry.Name));
entry.Length = (uint)newf.Length;
}
else
{
stmori.Seek(dataend + scwHdr.DataOffset, SeekOrigin.Begin);
bwori.Write(File.ReadAllBytes(entry.Name));
entry.Offset = (uint)dataend;
dataend += newf.Length;
dataend = dataend % 4 == 0 ? dataend : dataend + (4 - dataend % 4);
entry.Length = (uint)newf.Length;
}
entries[i] = entry;
}
}
}
stmidx.Seek(0, SeekOrigin.Begin);
for (int i = 0; i < scwHdr.IndexEntries; i++)
{
byte[] bentry = StructConverter.StructToBytes(entries[i]);
stmidx.Write(bentry, 0, Marshal.SizeOf(typeof(ScwIndexEntry)));
}
uint newlen = 0;
comprIdx = LzssPack(uncomprIdx, (uint)uncomprIdx.Length, ref newlen);
DecryptBlock(comprIdx, (int)newlen);
stmori.Seek(dataend + scwHdr.DataOffset, SeekOrigin.Begin);
bwori.Write(comprIdx, 0, (int)newlen);
long endpos = stmori.Position;
scwHdr.IndexOffset = (uint)dataend + scwHdr.DataOffset;
scwHdr.IndexLen = (uint)newlen;
stmori.Seek(0, SeekOrigin.Begin);
bwori.Write(StructConverter.StructToBytes(scwHdr));
stmori.SetLength(endpos);
stmori.Close();
return(true);
}
