private void ReadHeaderInfo(EndiannessAwareBinaryReader reader)
{
MagicBytes = reader.ReadBytes(4, ByteOrder.LittleEndian);
if (!IsValidPAC)
{
return;
}
HeaderSize = reader.ReadUInt32();
FileLength = reader.ReadUInt32();
FileCount = reader.ReadUInt32();
Parameters = (PACParameters)reader.ReadInt32();
FileNameLength = reader.ReadInt32();
reader.BaseStream.Seek(8, SeekOrigin.Current);
}
private Color[] GetPalette()
{
using (var reader = new EndiannessAwareBinaryReader(GetReadStream(), Endianness))
{
MagicBytes = reader.ReadBytes(4, ByteOrder.LittleEndian);
if (!IsValidHPL)
{
return(null);
}
if (!endiannessChecked)
{
CheckEndianness(reader.ReadBytes(4));
reader.ChangeEndianness(Endianness);
}
else
{
reader.BaseStream.Seek(4, SeekOrigin.Current);
}
FileLength = reader.ReadUInt32();
ColorRange = reader.ReadUInt32();
reader.BaseStream.Seek(16, SeekOrigin.Current);
var colors = new Color[ColorRange];
for (var i = 0; i < colors.Length; i++)
{
var bytes = reader.ReadBytes(4);
colors[i] = Color.FromArgb(bytes[3], bytes[2], bytes[1], bytes[0]);
}
return(colors);
}
}
private void InitGetHeader(bool onlyHeader = false)
{
var stream = GetReadStream(onlyHeader);
if (stream == null)
{
return;
}
using (stream)
{
if (FileLength < 32)
{
return;
}
try
{
using (var reader = new EndiannessAwareBinaryReader(stream, Endianness))
{
MagicBytes = reader.ReadBytes(4, ByteOrder.LittleEndian);
if (MagicBytes.SequenceEqual(new byte[] { 0x42, 0x43, 0x53, 0x4D }))
{
reader.BaseStream.Seek(12, SeekOrigin.Current);
Offset += 16;
}
else
{
reader.BaseStream.Seek(-4, SeekOrigin.Current);
}
if (Endianness == ByteOrder.LittleEndian && !endiannessChecked)
{
reader.BaseStream.Seek(4, SeekOrigin.Current);
var headersize = reader.ReadUInt32();
reader.BaseStream.Seek(4, SeekOrigin.Current);
var filecount = reader.ReadUInt32();
reader.BaseStream.Seek(4, SeekOrigin.Current);
var fileentrysize = reader.ReadUInt32() + 12;
var remainder = fileentrysize % 16;
fileentrysize = fileentrysize + (remainder == 0 ? remainder : 16 - remainder);
var calcheadersize = fileentrysize * filecount + 0x20;
var calcheadersize2 = (fileentrysize + 16) * filecount + 0x20;
if (calcheadersize != headersize && calcheadersize2 != headersize)
{
Endianness = ByteOrder.BigEndian;
reader.ChangeEndianness(Endianness);
}
stream.Seek(-24, SeekOrigin.Current);
endiannessChecked = true;
}
ReadHeaderInfo(reader);
}
}
catch
{
}
}
}
public VirtualFileSystemInfo[] GetFiles(bool recheck = false)
{
if (!Initialized)
{
Initialize();
InitGetHeader();
}
try
{
if (FileCount <= 0)
{
return(new VirtualFileSystemInfo[0]);
}
if (Files != null && !recheck)
{
return(Files);
}
using (var reader = new EndiannessAwareBinaryReader(GetReadStream(), Endianness))
{
ReadHeaderInfo(reader);
var virtualFiles = new VirtualFileSystemInfo[FileCount];
for (var i = 0; i < FileCount; i++)
{
var fileName = Encoding.ASCII
.GetString(reader.ReadBytes(FileNameLength, ByteOrder.LittleEndian))
.Replace("\0", string.Empty);
var fileIndex = reader.ReadUInt32();
var fileOffset = reader.ReadUInt32();
var fileLength = reader.ReadUInt32();
var seeklength = (FileNameLength + 12) % 16;
reader.BaseStream.Seek(seeklength == 0 ? seeklength : 16 - seeklength, SeekOrigin.Current);
if (reader.ReadByte() == 0x0 && seeklength == 0)
{
reader.BaseStream.Seek(16, SeekOrigin.Current);
}
reader.BaseStream.Seek(-1, SeekOrigin.Current);
var ext = Path.GetExtension(fileName);
switch (ext)
{
case ".pac":
case ".paccs":
case ".pacgz":
case ".fontpac":
virtualFiles[i] = new PACFileInfo(
FullName + ':' + fileName,
fileLength,
fileOffset + HeaderSize,
this);
break;
case ".hip":
virtualFiles[i] = new HIPFileInfo(
FullName + ':' + fileName,
fileLength,
fileOffset + HeaderSize,
this);
break;
case ".hpl":
virtualFiles[i] = new HPLFileInfo(
FullName + ':' + fileName,
fileLength,
fileOffset + HeaderSize,
this);
break;
case ".dds":
virtualFiles[i] = new DDSFileInfo(
FullName + ':' + fileName,
fileLength,
fileOffset + HeaderSize,
this);
break;
default:
virtualFiles[i] = new VirtualFileSystemInfo(
FullName + ':' + fileName,
fileLength,
fileOffset + HeaderSize,
this);
break;
}
}
reader.Close();
Files = virtualFiles;
return(Files);
}
}
catch
{
Files = new VirtualFileSystemInfo[0];
return(Files);
}
}