protected override bool ReadFile(BinaryReader r)
{
var length = (int)r.BaseStream.Length;
if (length < FileHeader.ByteSize)
{
return(false);
}
byte[] h = r.ReadBytes(FileHeader.ByteSize);
var seg = new ArraySegment <byte>(h);
if (!Header.ReadFile(seg))
{
return(false);
}
var offset = FileHeader.ByteSize;
if (length < FileHeader.ByteSize + Header.Area * 4)
{
return(false);
}
offset += (int)Header.Area * 4;
UInt32[] Positions = new UInt32[Header.Area];
var TileSize = Header.BlockHeight * Header.BlockWidth / 2;
for (var i = 0; i < Header.Area; ++i)
{
var pos = r.ReadInt32();
if (pos + TileSize + TileHeader.ByteSize > length)
{
return(false);
}
if (pos == 0)
{
Tiles.Add(null);
continue;
}
var T = new TileHeader();
T.Position = pos;
Tiles.Add(T);
}
byte[] contents = r.ReadBytes((int)(length - offset));
foreach (var T in TilesReal)
{
seg = new ArraySegment <byte>(contents, T.Position - offset, 0);
T.ReadFile(seg);
}
return(true);
}
protected override bool ReadFile(BinaryReader r)
{
var length = (int)r.BaseStream.Length;
if (length < FileHeader.ByteSize) {
return false;
}
byte[] h = r.ReadBytes(FileHeader.ByteSize);
var seg = new ArraySegment<byte>(h);
if (!Header.ReadFile(seg)) {
return false;
}
var offset = FileHeader.ByteSize;
if (length < FileHeader.ByteSize + Header.Area * 4) {
return false;
}
offset += (int)Header.Area * 4;
UInt32[] Positions = new UInt32[Header.Area];
var TileSize = Header.BlockHeight * Header.BlockWidth / 2;
for (var i = 0; i < Header.Area; ++i) {
var pos = r.ReadInt32();
if (pos + TileSize + TileHeader.ByteSize > length) {
return false;
}
if (pos == 0) {
Tiles.Add(null);
continue;
}
var T = new TileHeader();
T.Position = pos;
Tiles.Add(T);
}
byte[] contents = r.ReadBytes((int)(length - offset));
foreach (var T in TilesReal) {
seg = new ArraySegment<byte>(contents, T.Position - offset, 0);
T.ReadFile(seg);
}
return true;
}
