/*
* Reads pack header from the given reader.
*/
public static PFHeader ReadHeader(BinaryReader reader)
{
PFHeader header;
string packIdentifier = new string (reader.ReadChars(4));
header = new PFHeader(packIdentifier);
int packType = reader.ReadInt32();
header.PrecedenceByte = (byte)packType;
// header.Type = (PackType)packType;
header.Version = reader.ReadInt32();
int replacedPackFilenameLength = reader.ReadInt32();
reader.BaseStream.Seek(0x10L, SeekOrigin.Begin);
header.FileCount = reader.ReadUInt32();
UInt32 indexSize = reader.ReadUInt32();
header.DataStart = header.Length + indexSize;
if (header.PackIdentifier == "PFH4")
{
header.Unknown = reader.ReadUInt32();
}
// go to correct position
reader.BaseStream.Seek(header.Length, SeekOrigin.Begin);
for (int i = 0; i < header.Version; i++)
{
header.ReplacedPackFileNames.Add(IOFunctions.ReadZeroTerminatedAscii(reader));
}
header.DataStart += replacedPackFilenameLength;
return(header);
}
/*
* Decode pack file at the given path.
*/
public PackFile Open(string packFullPath)
{
PackFile file;
long sizes = 0;
using (var reader = new BinaryReader(new FileStream(packFullPath, FileMode.Open), Encoding.ASCII))
{
PFHeader header = ReadHeader(reader);
file = new PackFile(packFullPath, header);
OnHeaderLoaded(header);
long offset = file.Header.DataStart;
for (int i = 0; i < file.Header.FileCount; i++)
{
uint size = reader.ReadUInt32();
sizes += size;
if (file.Header.HasAdditionalInfo)
{
header.AdditionalInfo = reader.ReadInt64();
}
string packedFileName = IOFunctions.ReadZeroTerminatedAscii(reader);
// this is easier because we can use the Path methods
// under both Windows and Unix
packedFileName = packedFileName.Replace('\\', Path.DirectorySeparatorChar);
PackedFile packed = new PackedFile(file.Filepath, packedFileName, offset, size);
file.Add(packed);
offset += size;
this.OnPackedFileLoaded(packed);
}
}
this.OnFinishedLoading(file);
file.IsModified = false;
return(file);
}
public override void Encode(BinaryWriter writer)
{
writer.Write(Value.Length > 0);
if (Value.Length > 0)
{
IOFunctions.WriteCAString(writer, Value.Trim(), stringEncoding);
}
}
public static void WriteHeader(BinaryWriter writer, DBFileHeader header)
{
if (header.GUID != "")
{
writer.Write(GUID_MARKER);
IOFunctions.WriteCAString(writer, header.GUID, Encoding.Unicode);
}
if (header.Version != 0)
{
writer.Write(VERSION_MARKER);
writer.Write(header.Version);
}
writer.Write((byte)1);
writer.Write(header.EntryCount);
}
public override void Decode(BinaryReader reader)
{
string result = "";
byte b = reader.ReadByte();
if (b == 1)
{
result = IOFunctions.ReadCAString(reader, stringEncoding);
readLengthZero = result.Length == 0;
}
else if (b != 0)
{
throw new InvalidDataException(string.Format("- invalid - ({0:x2})", b));
}
Value = result;
}
public static DBFileHeader readHeader(BinaryReader reader)
{
byte index = reader.ReadByte();
int version = 0;
string guid = "";
bool hasMarker = false;
uint entryCount = 0;
try
{
if (index != 1)
{
// I don't think those can actually occur more than once per file
while (index == 0xFC || index == 0xFD)
{
var bytes = new List <byte>(4);
bytes.Add(index);
bytes.AddRange(reader.ReadBytes(3));
UInt32 marker = BitConverter.ToUInt32(bytes.ToArray(), 0);
if (marker == GUID_MARKER)
{
guid = IOFunctions.ReadCAString(reader, Encoding.Unicode);
index = reader.ReadByte();
}
else if (marker == VERSION_MARKER)
{
hasMarker = true;
version = reader.ReadInt32();
index = reader.ReadByte();
// break;
}
else
{
throw new DBFileNotSupportedException(string.Format("could not interpret {0}", marker));
}
}
}
entryCount = reader.ReadUInt32();
}
catch
{
}
DBFileHeader header = new DBFileHeader(guid, version, entryCount, hasMarker);
return(header);
}
public override void Encode(BinaryWriter writer)
{
IOFunctions.WriteCAString(writer, Value.Trim(), stringEncoding);
}
public override void Decode(BinaryReader reader)
{
Value = IOFunctions.ReadCAString(reader, stringEncoding);
}
