/// <summary>
/// Compiles the specified addon into the specified stream.
/// </summary>
/// <param name="addon">The addon to compile.</param>
/// <param name="stream">The stream which the result should be written to.</param>
/// <exception cref="IOExecption">Happens if there is a problem with the specified stream.</exception>
public static void Create(Addon addon, Stream stream)
{
var writer = new BinaryWriter(stream);
writer.BaseStream.Seek(0, SeekOrigin.Begin);
writer.BaseStream.SetLength(0);
// Header (5)
writer.Write(Addon.Magic.ToCharArray()); // Ident (4)
writer.Write(Addon.Version); // Version (1)
// SteamID (8) [unused]
writer.Write((ulong)0);
// TimeStamp (8)
writer.Write((ulong)
(DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0).ToLocalTime()).TotalSeconds);
// Required content (a list of strings)
writer.Write((char)0); // signifies nothing
// Addon Name (n)
writer.WriteNullTerminatedString(addon.Title);
// Addon Description (n)
writer.WriteNullTerminatedString(addon.DescriptionJson);
// Addon Author (n) [unused]
writer.WriteNullTerminatedString("Author Name");
// Addon version (4) [unused]
writer.Write(1);
// File list
uint fileNum = 0;
foreach (var f in addon.Files)
{
// Remove prefix / from filename
var file = f.Path.TrimStart('/');
fileNum++;
writer.Write(fileNum); // File number (4)
writer.WriteNullTerminatedString(file.ToLowerInvariant()); // File name (all lower case!) (n)
writer.Write(f.Size); // File size (8) unsigned long
writer.Write(f.Crc); // File CRC (4) long long
}
writer.Flush();
// Zero to signify the end of files
fileNum = 0;
writer.Write(fileNum);
// The files
foreach (var f in addon.Files)
{
writer.Write(f.Content);
writer.Flush();
}
// CRC what we've written (to verify that the download isn't s*****d) (4)
writer.Seek(0, SeekOrigin.Begin);
var buffer_whole = new byte[writer.BaseStream.Length];
writer.BaseStream.Read(buffer_whole, 0, (int)writer.BaseStream.Length);
ulong addonCRC = CRC32.ComputeChecksum(buffer_whole);
writer.Write(addonCRC);
writer.Flush();
writer.BaseStream.Seek(0, SeekOrigin.Begin);
}
