/// <summary>
/// Creates a ONE archive from a set of files.
/// </summary>
/// <param name="files">The files to create an archive from.</param>
/// <param name="version">The version of the archive. Heroes' default is 3.5.0.0. Consider using 3.3.0.0 to support all available prototypes.</param>
/// <param name="bufferSize">Size of the search buffer used in compression between 0-8191.</param>
public static byte[] FromFiles(IList <ManagedOneFile> files, RwVersion version, int bufferSize = 255)
{
// Compress all files.
files = files.Select(x => new ManagedOneFile(x.Name, x.GetCompressedData(bufferSize), true)).ToArray();
// Calculate sizes.
var numberOfFiles = files.Count + 2; // Two dummy entries.
var sizeOfHeaders = sizeof(OneArchiveHeader) + sizeof(OneNameSectionHeader);
var sizeOfNameSection = sizeof(OneFileName) * numberOfFiles;
var sizeOfFileSection = files.Sum(x => x.GetCompressedData().Length + sizeof(OneFileEntry));
var totalSize = sizeOfHeaders + sizeOfNameSection + sizeOfFileSection;
// Make file.
using var memStream = new ExtendedMemoryStream(totalSize);
memStream.Append(new OneArchiveHeader(totalSize - sizeof(OneArchiveHeader), version));
memStream.Append(new OneNameSectionHeader(sizeOfNameSection, version));
memStream.Append(new OneFileName("")); // Dummy entries
memStream.Append(new OneFileName(""));
foreach (var file in files)
{
memStream.Append(new OneFileName(file.Name));
}
int nameSectionIndex = 2;
foreach (var file in files)
{
memStream.Append(new OneFileEntry(nameSectionIndex++, file.GetCompressedData().Length, file.RwVersion));
memStream.Append(file.GetCompressedData());
}
return(memStream.ToArray());
}
/// <summary>
/// Writes the contents of the archive to be generated to the stream.
/// </summary>
public void Write(Stream writeStream)
{
using var stream = new ExtendedMemoryStream();
// Number of items.
stream.Write <int>(Groups.Keys.Count);
// Number of items for each id.
foreach (var group in Groups)
{
stream.Write <byte>((byte)group.Value.Files.Count);
}
stream.AddPadding(0x00, 4);
// Write first item index for each group.
ushort totalItems = 0;
foreach (var group in Groups)
{
stream.Write <ushort>(totalItems);
totalItems += (ushort)group.Value.Files.Count;
}
// Write ID for each group.
foreach (var group in Groups)
{
stream.Write <ushort>(group.Value.Id);
}
// Write offsets for each file and pad.
int firstWriteOffset = Utilities.Utilities.RoundUp((int)stream.Position + (sizeof(int) * totalItems), 16);
int fileWriteOffset = firstWriteOffset;
foreach (var group in Groups)
{
foreach (var file in group.Value.Files)
{
stream.Write <int>(file.Data.Length <= 0 ? 0 : fileWriteOffset);
fileWriteOffset += file.Data.Length;
}
}
// Write files.
stream.Write(new byte[(int)(firstWriteOffset - stream.Position)]); // Alignment
foreach (var file in Groups.SelectMany(x => x.Value.Files))
{
stream.Write(file.Data);
}
writeStream.Write(stream.ToArray());
}
/// <summary>
/// Writes the contents of the archive to be generated to the stream.
/// </summary>
public void Write(Stream writeStream, bool bigEndian)
{
using var stream = new ExtendedMemoryStream();
using EndianMemoryStream endianStream = bigEndian ? (EndianMemoryStream) new BigEndianMemoryStream(stream) : new LittleEndianMemoryStream(stream);
// Precompute Offsets
var fileNameSize = Files.Sum(x => x.Name.Length) + (Files.Count);
Span <int> offsets = stackalloc int[Files.Count];
PrecomputeFileOffsets(offsets, fileNameSize);
// Texture Count
endianStream.Write <short>((short)Files.Count);
endianStream.Write((short)1);
// Texture Offsets
for (int x = 0; x < offsets.Length; x++)
{
endianStream.Write(offsets[x]);
}
// Texture Flags
for (int x = 0; x < Files.Count; x++)
{
endianStream.Write((byte)0x11);
}
// Texture Names
Span <byte> currentString = stackalloc byte[1024];
foreach (var file in Files)
{
int numEncoded = Encoding.ASCII.GetBytes(file.Name, currentString);
currentString[numEncoded] = 0x00;
stream.Write(currentString.Slice(0, numEncoded + 1));
}
// Texture Data
stream.AddPadding(FileDataAlignment);
for (int x = 0; x < Files.Count; x++)
{
stream.Write(Files[x].Data);
stream.AddPadding(FileDataAlignment);
}
writeStream.Write(stream.ToArray());
}
/// <summary>
/// Builds a virtual AFS based upon a supplied base AFS file.
/// </summary>
public VirtualAfs Build(string afsFilePath, int alignment = 2048)
{
// Get entries from original AFS file.
var entries = GetEntriesFromFile(afsFilePath);
var files = new Dictionary <int, VirtualFile>(entries.Length);
// Get Original File List and Copy to New Header.
var maxCustomFileId = _customFiles.Count > 0 ? _customFiles.Max(x => x.Key) + 1 : 0;
var numFiles = Math.Max(maxCustomFileId, entries.Length);
var newEntries = new AfsFileEntry[numFiles];
var headerLength = Utilities.RoundUp(sizeof(AfsHeader) + (sizeof(AfsFileEntry) * entries.Length), alignment);
// Create new Virtual AFS Header
for (int x = 0; x < entries.Length; x++)
{
var offset = x > 0 ? Utilities.RoundUp(newEntries[x - 1].Offset + newEntries[x - 1].Length, alignment) : entries[0].Offset;
int length = 0;
if (_customFiles.ContainsKey(x))
{
length = _customFiles[x].Length;
files[offset] = _customFiles[x];
}
else
{
length = entries[x].Length;
files[offset] = new VirtualFile(entries[x], afsFilePath);
}
newEntries[x] = new AfsFileEntry(offset, length);
}
var lastEntry = newEntries.Last();
var fileSize = Utilities.RoundUp(lastEntry.Offset + lastEntry.Length, alignment);
// Make Header
using var memStream = new ExtendedMemoryStream(headerLength);
memStream.Append(AfsHeader.FromNumberOfFiles(newEntries.Length));
memStream.Append(newEntries);
memStream.Append(new AfsFileEntry(0, 0));
memStream.AddPadding(alignment);
return(new VirtualAfs(memStream.ToArray(), files, alignment, fileSize));
}
/*
* Inspired by: https://gist.github.com/darkfall/1656050
* Originally licensed with CC-BY-SA.
*/
/// <summary>
/// Converts a PNG image to a icon (ico) with all supported Windows sizes.
/// </summary>
/// <param name="inputBitmap">The input image.</param>
/// <param name="output">The output stream.</param>
public static bool TryConvertToIcon(Bitmap inputBitmap, Stream output)
{
if (inputBitmap == null)
{
return(false);
}
int[] sizes = { 256, 64, 48, 32, 16 };
// Generate PNGs for all sizes and toss them in streams
var streams = new List <MemoryStream>();
foreach (int size in sizes)
{
var newBitmap = ResizeImage(inputBitmap, size, size);
if (newBitmap == null)
{
return(false);
}
var imageStream = new MemoryStream();
newBitmap.Save(imageStream, ImageFormat.Png);
streams.Add(imageStream);
}
using var iconWriter = new ExtendedMemoryStream();
// Write ICO header.
iconWriter.Write(new IcoHeader()
{
ImageType = 1,
NumberOfImages = (short)sizes.Length
});
// Make Image Headers
var imageDataOffset = Struct.GetSize <IcoHeader>() + (Struct.GetSize <IcoEntry>() * sizes.Length);
for (int x = 0; x < sizes.Length; x++)
{
iconWriter.Write(new IcoEntry()
{
Width = (byte)sizes[x],
Height = (byte)sizes[x],
BitsPerPixel = 32,
SizeOfImageData = (int)streams[x].Length,
OffsetOfImageData = imageDataOffset
});
imageDataOffset += (int)streams[x].Length;
}
// Write Image Data
for (int i = 0; i < sizes.Length; i++)
{
iconWriter.Write(streams[i].ToArray());
streams[i].Close();
}
iconWriter.Flush();
output.Write(iconWriter.ToArray());
return(true);
}