public void Load(Stream stream, bool ownsStream)
{
mBaseStream = stream;
mOwnsStream = ownsStream;
using (var reader = new EndianBinaryReader(stream, Encoding.Default, true, Endianness.LittleEndian))
{
while (reader.Position < reader.BaseStreamLength)
{
var type = reader.ReadByte();
if (type == 0xFF) // end
{
break;
}
var isCompressed = reader.ReadBoolean();
var userId = reader.ReadInt16();
var length = reader.ReadInt32() - 16;
var extension = reader.ReadString(StringBinaryFormat.FixedLength, 4);
var decompressedLength = reader.ReadInt32();
var offset = ( int )reader.Position;
var entry = new StoredEntry(AllocateHandle(), mBaseStream, offset, type, isCompressed, userId, length, extension, decompressedLength);
mEntryMap[entry.Handle] = entry;
reader.SeekCurrent(length);
reader.Position = AlignmentUtils.Align(reader.Position, 64);
}
}
}
private void ReadEntries()
{
mEntryMap = new Dictionary <string, IEntry>(StringComparer.InvariantCultureIgnoreCase);
using (var reader = new EndianBinaryReader(mBaseStream, Encoding.Default, true, IsBigEndian ? Endianness.BigEndian : Endianness.LittleEndian))
{
var stringBuilder = new StringBuilder();
if (Version == FormatVersion.Version1)
{
while (true)
{
long entryStartPosition = reader.BaseStream.Position;
if (entryStartPosition == reader.BaseStream.Length)
{
break;
}
// read entry name
while (true)
{
byte b = reader.ReadByte();
if (b == 0)
{
break;
}
stringBuilder.Append(( char )b);
// just to be safe
if (stringBuilder.Length == 252)
{
break;
}
}
string fileName = stringBuilder.ToString();
// set position to length field
reader.BaseStream.Position = entryStartPosition + 252;
// read entry length
int length = reader.ReadInt32();
if (fileName.Length == 0 || length <= 0 || length > 1024 * 1024 * 100)
{
break;
}
// make an entry
var entry = new StoredEntry(mBaseStream, fileName, length, ( int )reader.BaseStream.Position);
// clear string builder for next iteration
stringBuilder.Clear();
reader.BaseStream.Position = AlignmentUtils.Align(reader.BaseStream.Position + entry.Length, 64);
mEntryMap[entry.FileName] = entry;
}
}
else if (Version == FormatVersion.Version2 || Version == FormatVersion.Version2BE || Version == FormatVersion.Version3 || Version == FormatVersion.Version3BE)
{
int entryCount = reader.ReadInt32();
int nameLength = 32;
if (Version == FormatVersion.Version3)
{
nameLength = 24;
}
for (int i = 0; i < entryCount; i++)
{
long entryStartPosition = reader.BaseStream.Position;
if (entryStartPosition == reader.BaseStream.Length)
{
break;
}
// read entry name
for (int j = 0; j < nameLength; j++)
{
byte b = reader.ReadByte();
if (b != 0)
{
stringBuilder.Append(( char )b);
}
}
string fileName = stringBuilder.ToString();
// read entry length
int length = reader.ReadInt32();
if (fileName.Length == 0 || length <= 0 || length > 1024 * 1024 * 100)
{
break;
}
// make an entry
var entry = new StoredEntry(mBaseStream, fileName, length, ( int )reader.BaseStream.Position);
// clear string builder for next iteration
stringBuilder.Clear();
reader.BaseStream.Position += entry.Length;
mEntryMap[entry.FileName] = entry;
}
}
}
}