/// <summary> 使用外部的的<see cref="WzFileStream"/>儲存資料 </summary>
public bool Write(WzFileStream zs)
{
this.Hash = HashTools.GenerateArchiveVersionHash(this.Version.ToString());
// header
zs.Write(new byte[] { (byte)'P', (byte)'K', (byte)'G', (byte)'1' }, 4);
zs.Write8(0); //Reserve
zs.Write4u(0); //Reserve
zs.WriteString(this.Description);
// data
long off = zs.Tell();
this.DataOffset = (uint)off;
zs.BaseOffset = this.DataOffset;
zs.Write2u((ushort)HashTools.EncryptArchiveVersionHash(this.Hash));
this.RootDirectory.Update();
this.RootDirectory.Write(zs);
long endoff = zs.Tell();
// rewrite size, offset
zs.Seek(4);
zs.Write8(endoff - off);
zs.Write4u((uint)off);
// end write
zs.Flush();
return(true);
}
/// <summary> 使用外部的<see cref="WzFileStream"/>讀取資料 </summary>
public bool Read(WzFileStream zs)
{
string identifier = zs.ReadString(4);
if (!identifier.Equals("PKG1"))
{
return(false);
}
this.DataSize = zs.Read8();
this.DataOffset = zs.Read4u();
this.Description = zs.ReadString((int)(this.DataOffset - zs.Tell()));
zs.BaseOffset = this.DataOffset;
ushort cryptedHash = zs.Read2u();
this.RootDirectory.Offset = (uint)zs.Tell();
for (int j = 0; j < 0xFFFF; j++)
{
this.Hash = HashTools.GenerateArchiveVersionHash(j.ToString());
if (HashTools.EncryptArchiveVersionHash(this.Hash) == cryptedHash)
{
zs.StringPool.Clear();
if (this.RootDirectory.Read(zs))
{
this.Version = j;
return(true);
}
}
}
return(false);
}
