/* Add a file to the PAK2 */
public override PAKReturnType AddFile(string PathToNewFile, int TrimFromPath = 0) //TrimFromPath is available to leave some directory trace in the filename
{
try
{
EntryPAK2 NewFile = new EntryPAK2();
if (TrimFromPath == 0)
{
NewFile.Filename = Path.GetFileName(PathToNewFile).ToUpper();
} //Virtual directory support here would be nice too
else
{
NewFile.Filename = PathToNewFile.Substring(TrimFromPath).ToUpper();
} //Easy to fail here, so be careful on function usage!
NewFile.Content = File.ReadAllBytes(PathToNewFile);
Pak2Files.Add(NewFile);
return(PAKReturnType.SUCCESS);
}
catch (IOException) { return(PAKReturnType.FAIL_COULD_NOT_ACCESS_FILE); }
catch (Exception) { return(PAKReturnType.FAIL_UNKNOWN); }
}
/* Load the contents of an existing PAK2 */
public override PAKReturnType Load()
{
if (!File.Exists(FilePathPAK))
{
return(PAKReturnType.FAIL_TRIED_TO_LOAD_VIRTUAL_ARCHIVE);
}
try
{
//Open PAK
BinaryReader ArchiveFile = new BinaryReader(File.OpenRead(FilePathPAK));
//Read the header info
string MagicValidation = "";
for (int i = 0; i < 4; i++)
{
MagicValidation += ArchiveFile.ReadChar();
}
if (MagicValidation != "PAK2")
{
ArchiveFile.Close(); return(PAKReturnType.FAIL_ARCHIVE_IS_NOT_EXCPETED_TYPE);
}
OffsetListBegin = ArchiveFile.ReadInt32() + 16;
NumberOfEntries = ArchiveFile.ReadInt32();
ArchiveFile.BaseStream.Position += 4; //Skip "4"
//Read all file names and create entries
for (int i = 0; i < NumberOfEntries; i++)
{
string ThisFileName = "";
for (byte b; (b = ArchiveFile.ReadByte()) != 0x00;)
{
ThisFileName += (char)b;
}
EntryPAK2 NewPakFile = new EntryPAK2();
NewPakFile.Filename = ThisFileName;
Pak2Files.Add(NewPakFile);
}
//Read all file offsets
ArchiveFile.BaseStream.Position = OffsetListBegin;
List <int> FileOffsets = new List <int>();
FileOffsets.Add(OffsetListBegin + (NumberOfEntries * 4));
for (int i = 0; i < NumberOfEntries; i++)
{
FileOffsets.Add(ArchiveFile.ReadInt32());
Pak2Files[i].Offset = FileOffsets[i];
}
//Read in the files to entries
ExtraBinaryUtils BinaryUtils = new ExtraBinaryUtils();
for (int i = 0; i < NumberOfEntries; i++)
{
//Must pass to RemoveLeadingNulls as each file starts with 0-3 null bytes to align files to a 4-byte block reader
Pak2Files[i].Content = BinaryUtils.RemoveLeadingNulls(ArchiveFile.ReadBytes(FileOffsets[i + 1] - FileOffsets[i]));
}
//Close PAK
ArchiveFile.Close();
return(PAKReturnType.SUCCESS);
}
catch (IOException) { return(PAKReturnType.FAIL_COULD_NOT_ACCESS_FILE); }
catch (Exception) { return(PAKReturnType.FAIL_UNKNOWN); }
}