/// <summary>
/// Saves the specified <see cref="TPIPackageClass"/> into a <see cref="MemoryStream"/>.
/// </summary>
/// <param name="Dat">Instance of <see cref="TPIPackageClass"/> which will be saved.</param>
/// <returns>An instance of <see cref="MemoryStream"/> saved into Renegade-readable format.</returns>
public static MemoryStream Save(TPIPackageClass TPI)
{
try
{
using (MemoryStream ms = new MemoryStream())
{
ms.Write("DAEH"); //Starting with HEAD because why not.
ms.Write(BitConverter.GetBytes(8)); //Length of HEAD.
for (int i = 6; i >= 0; i -= 2)
{
ms.Write((byte)Convert.ToInt32(TPI.PackageID.Substring(i, 2), 16)); //Writing CRC.
}
ms.Write(BitConverter.GetBytes(TPI.FileCount));
ms.Write("ATAD"); //DATA now.
string Data = string.Empty;
Data += Expressions.Flatten(BitConverter.GetBytes((ushort)TPI.PackageName.Length)); //Write package name length + content.
Data += TPI.PackageName;
Data += Expressions.Flatten(BitConverter.GetBytes((ushort)TPI.PackageVer.Length)); //Write package version length + content.
Data += TPI.PackageVer;
Data += Expressions.Flatten(BitConverter.GetBytes((ushort)TPI.PackageOwner.Length)); //Write package owner length + content.
Data += TPI.PackageOwner;
Data += Expressions.Flatten(BitConverter.GetBytes((int)TPI.Type));
ms.Write(BitConverter.GetBytes(Data.Length));
ms.Write(Data);
foreach (TTFileClass TTFile in TPI.Files)
{
ms.Write("ELIF");
string File = string.Empty;
for (int i = 6; i >= 0; i -= 2)
{
File += (char)((byte)Convert.ToInt32(TTFile.CRC.Substring(i, 2), 16)); //Writing CRC.
}
File += Expressions.Flatten(BitConverter.GetBytes(TTFile.FileSize));
File += Expressions.Flatten(BitConverter.GetBytes(TTFile.OriginalNameLength));
File += TTFile.FileName;
ms.Write(BitConverter.GetBytes(File.Length));
ms.Write(File);
}
MemoryStream Str = new MemoryStream();
ms.WriteTo(Str);
return(Str);
}
}
catch (Exception ex)
{
throw new TPIParserException("Failed to save TPI.", ex); //Wrapping the exception to our TPIParserException class.
}
}
/// <summary> /// Saves the specified <see cref="TPIPackageClass"/> into a file. /// </summary> /// <param name="TPI">Instance of <see cref="TPIPackageClass"/> which will be saved.</param> /// <param name="FileLoc">Path to the target file.</param> public static void Save(TPIPackageClass TPI, string FileLoc) => File.WriteAllBytes(FileLoc, Save(TPI).ToArray());
/// <summary>
/// Parses the TPI from specified <see cref="MemoryStream"/>.
/// </summary>
/// <param name="Stream">Instance of <see cref="MemoryStream"/> containing the TPI file data.</param>
/// <returns>Parsed data of TPI as <see cref="TPIPackageClass"/>.</returns>
public static TPIPackageClass FromStream(MemoryStream Stream)
{
using (Stream Bytes = new MemoryStream(Stream.ToArray()))
{
try
{
TPIPackageClass Pack = Expressions.CreateTPIPackage();
while (ConditionsOK(Bytes))
{
uint Header = Expressions.GetUNumber(Expressions.GetBytes(Bytes, 0, 4));
if (Header == (uint)ChunkType.Head)
{
//Processing the HEAD. Reading first 4 bytes to find out length.
int Next = Expressions.GetNumber(Expressions.GetBytes(Bytes, 0, 4));
//Buaa getting all bytes now.
byte[] Data = Expressions.GetBytes(Bytes, 0, Next);
Pack.PackageID = Expressions.GetCRCID(Data.SubArray(0, 4));
//Next 4 bytes are indicating total files used by this TPI. But it is read-only because it uses the ones
//actually parsed by the parser.
//Now, we should have DATA. Ending this if else.
}
else if (Header == (uint)ChunkType.Data)
{
//Processing the DATA.
int Next = Expressions.GetNumber(Expressions.GetBytes(Bytes, 0, 4));
//Fun part ;)
int NameLen = Expressions.GetUNumber16(Expressions.GetBytes(Bytes, 0, 2));
Pack.PackageName = Expressions.GetText(Bytes, 0, NameLen);
int VerLen = Expressions.GetUNumber16(Expressions.GetBytes(Bytes, 0, 2));
Pack.PackageVer = Expressions.GetText(Bytes, 0, VerLen);
int OwnerLen = Expressions.GetUNumber16(Expressions.GetBytes(Bytes, 0, 2));
Pack.PackageOwner = Expressions.GetText(Bytes, 0, OwnerLen);
Pack.Type = (PackageType)Expressions.GetNumber(Expressions.GetBytes(Bytes, 0, 4));
//Now, we should have FILEs. Ending this if else and letting while continue it's work.
}
else if (Header == (uint)ChunkType.File)
{
TTFileClass File = Expressions.CreateTTFile();
int Next = Expressions.GetNumber(Expressions.GetBytes(Bytes, 0, 4));
File.CRC = Expressions.GetCRCID(Expressions.GetBytes(Bytes, 0, 4));
File.FileSize = Expressions.GetUNumber(Expressions.GetBytes(Bytes, 0, 4));
int namelen = Expressions.GetUNumber16(Expressions.GetBytes(Bytes, 0, 2));
File.FileName = Expressions.GetText(Bytes, 0, namelen);
//No NULs after file name, so let while loop read next header if Stream not ended.
//Let's add file to collection...
Pack.Files.Add(File);
}
else
{
//Hmm...
}
}
//Return when everything is good to go.
return(Pack);
}
catch (Exception ex)
{
throw new TPIParserException("Failed to parse TPI.", ex); //Wrapping the exception to our TPIParserException class.
}
}
}
