private uint findPointerPosition(byte[] buffer, uint position)
{
var pointerBuffer = new byte[4]; // are the pointers 4 bytes?
BinaryHelper.WriteUInt32(pointerBuffer, position);
// assuming the pointer is behind the actual string
for (var b = 0; b < buffer.Length - pointerBuffer.Length; ++b)
{
var match = true;
for (var r = 0; r < pointerBuffer.Length; ++r)
{
if (buffer[b + r] != pointerBuffer[r])
{
match = false;
break;
}
}
if (match)
{
return((uint)b);
}
}
return(0);
}
public void WriteStream(FileStream stream)
{
BinaryHelper.WriteString(stream, filename, 32);
BinaryHelper.WriteUInt16(stream, year);
BinaryHelper.WriteUInt16(stream, month);
BinaryHelper.WriteUInt16(stream, day);
BinaryHelper.WriteUInt16(stream, hour);
BinaryHelper.WriteUInt16(stream, minute);
BinaryHelper.WriteUInt16(stream, second);
BinaryHelper.WriteUInt32(stream, fileLength);
}
public void WriteStream(FileStream stream)
{
BinaryHelper.WriteUInt32(stream, offset);
BinaryHelper.WriteUInt32(stream, length);
}
public void WriteStream(FileStream stream)
{
var padding_size = 2048;
// header
BinaryHelper.WriteString(stream, header, 4);
BinaryHelper.WriteUInt32(stream, numFiles);
// table of contents
for (var i = 0; i < numFiles; ++i)
{
var toc_entry = tableOfContents[i];
toc_entry.WriteStream(stream);
}
// padding (table of contents is 512 KB)
var tableOfContentsSize = padding_size * 256;
BinaryHelper.WriteAFSPadding(stream, stream.Position, tableOfContentsSize);
// directory information is at the very end of the table of contents block, past the padding
stream.Position -= 8;
BinaryHelper.WriteUInt32(stream, filenameDirectoryOffset);
BinaryHelper.WriteUInt32(stream, filenameDirectoryLength);
// data (will need to update ToC entry's from here)
for (var i = 0; i < numFiles; ++i)
{
var toc_entry = tableOfContents[i];
toc_entry.offset = (uint)stream.Position;
var afs_file = files[i];
afs_file.WriteStream(stream);
// padding
BinaryHelper.WriteAFSPadding(stream, stream.Position, padding_size);
}
filenameDirectoryOffset = (uint)stream.Position;
// directory
for (var i = 0; i < numFiles; ++i)
{
var dir_entry = directory[i];
dir_entry.WriteStream(stream);
}
filenameDirectoryLength = (uint)(stream.Position - filenameDirectoryOffset);
// padding
BinaryHelper.WriteAFSPadding(stream, stream.Position, padding_size);
// go back and re-write the table of contents, with the updated information
stream.Position = 8; // header = 4, numfiles = 4
// table of contents
for (var i = 0; i < numFiles; ++i)
{
var toc_entry = tableOfContents[i];
toc_entry.WriteStream(stream);
}
BinaryHelper.WriteUInt32(stream, filenameDirectoryOffset);
BinaryHelper.WriteUInt32(stream, filenameDirectoryLength);
}
