public static Cmpt Read(Stream stream)
{
using (var reader = new BinaryReader(stream))
{
var cmpt = new Cmpt();
var cmptHeader = new CmptHeader(reader);
cmpt.CmptHeader = cmptHeader;
var tiles = new List <byte[]>();
var magics = new List <string>();
for (var i = 0; i < cmptHeader.TilesLength; i++)
{
var currentPosition = reader.BaseStream.Position;
var magic = Encoding.UTF8.GetString(reader.ReadBytes(4));
magics.Add(magic);
var version = (int)reader.ReadUInt32();
var byteLength = (int)reader.ReadUInt32();
reader.BaseStream.Position = currentPosition;
var bytesInnertile = reader.ReadBytes(byteLength);
tiles.Add(bytesInnertile);
}
cmpt.Tiles = tiles;
cmpt.Magics = magics;
return(cmpt);
}
}
public static byte[] Write(IEnumerable <byte[]> tiles)
{
if (!tiles.Any())
{
throw new ArgumentException("Inner tiles must be defined");
}
var stream = new MemoryStream();
var binaryWriter = new BinaryWriter(stream);
var header = new CmptHeader();
header.TilesLength = tiles.Count();
var paddedTiles = new List <byte[]>();
foreach (var tile in tiles)
{
// optional: we can do other checks here to validate inner tile
if (tile.Length % 8 != 0)
{
throw new ArgumentException("Inner tile must be 8 byte aligned");
}
var tilePadded = tile;
paddedTiles.Add(tilePadded);
}
header.ByteLength = 16 + paddedTiles.Sum(i => i.Length);
var headerBytes = header.AsBinary();
var headerBytesPadded = headerBytes;
binaryWriter.Write(headerBytesPadded);
foreach (var paddedTile in paddedTiles)
{
binaryWriter.Write(paddedTile);
}
binaryWriter.Flush();
binaryWriter.Close();
return(stream.ToArray());
}
public static byte[] Write(IEnumerable <byte[]> tiles)
{
var stream = new MemoryStream();
var binaryWriter = new BinaryWriter(stream);
var header = new CmptHeader();
header.TilesLength = tiles.Count();
header.ByteLength = 16 + tiles.Sum(i => i.Length);
var headerBytes = header.AsBinary();
binaryWriter.Write(headerBytes);
foreach (var tile in tiles)
{
binaryWriter.Write(tile);
}
binaryWriter.Flush();
binaryWriter.Close();
return(stream.ToArray());
}
